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Alternate cryptocurrencies => Mining (Altcoins) => Topic started by: mrmork666 on January 08, 2014, 04:04:55 PM



Title: Best r9 280x
Post by: mrmork666 on January 08, 2014, 04:04:55 PM
So i want buy some more mining power and i am not sure what exact card is the best
my options and prices are
ASUS HD7970-DC2T-3GD5 TOP 3072MB GDDR5 289€
MSI R9 280X GAMING 3G AMD 3GB GDDR5 VGA 284€
CLUB3D R9 280X 3GB DDR5 RQueen 287€
ASUS R9280X-DC2-3GD5 3GB GDDR5 DVI-I DVI 293€
3072MB Sapphire Radeon R9 280X Dual-X Aktiv PCIe 3.0 x16 (Lite Retail) 278€
3072MB HIS Radeon R9 280X IceQ Boost Clock Aktiv PCIe 3.0 x16 (Retail) 265€
3072MB Sapphire Radeon R9 280X Toxic Aktiv PCIe 3.0 x16 (Full Retail) 315€

Will buy 2* cards and a 750w psu
my mobo is  asus M5A97 r2.0
my case is cm elite 334u mid (have to run in case 1 side open cos i have no spare room for a rig)
Amd phenom II x4 965 Black edition 125W
cm hyper tx3 evo
Kingston Hyper X 16gb ddr3 1600mhz
win 7

lmk your opinions


Title: Re: Best r9 280x
Post by: zefo on January 08, 2014, 04:36:54 PM
Go with the Sapphire Toxic.  It's about 50 KH/s faster than the MSI.


Title: Re: Best r9 280x
Post by: Prelektro on January 08, 2014, 05:09:23 PM
i would go for asus 280x. toxic is hard to cool and getting really hot and noisy


Title: Re: Best r9 280x
Post by: mrmork666 on January 08, 2014, 05:18:17 PM
i would go for asus 280x. toxic is hard to cool and getting really hot and noisy

yea the heat might be issue since the case isnt that big
the cpu cooler gives some dirrect air but only to the gpu 1 thou
currently i can run my asus r9 270x 465kh/s on 64c


Title: Re: Best r9 280x
Post by: claygraffix on January 08, 2014, 05:35:07 PM
I have 4x ASUS R9280X-DC2-3GD5 3GB GDDR5 DVI-I DVI 

All at 750kh/s on stock settings, 69-71 deg.  Going to buy 4 more soon.


Title: Re: Best r9 280x
Post by: kalus on January 08, 2014, 07:41:45 PM
the best 280x is the one you can find for retail price.

good luck. 


Title: Re: Best r9 280x
Post by: epicjim on January 08, 2014, 08:24:55 PM
Gigabyte R9 280x Rev2 is best. It produces 730k/s while its undervolted to 1.075V at 64C . Sapphires and other makes are power hungry. No other make can come close to Gigabyte version.


Title: Re: Best r9 280x
Post by: mmininginc on January 08, 2014, 10:36:37 PM
I have the ASUS R9 280x DC2 and 100% happy with it.
Like claygraffix I get 750kH/s with it. (undervoltaged + increased the engine clock with 80MHz)
But what I really like about this card is its superb and silent cooling system.


Title: Re: Best r9 280x
Post by: psybase64 on January 09, 2014, 04:57:41 AM
mmininginc - I have the ASUS R9 280x DC2 and 100% happy with it.
Like claygraffix I get 750kH/s with it. (undervoltaged + increased the engine clock with 80MHz)
But what I really like about this card is its superb and silent cooling system.

claygraffix - I have 4x ASUS R9280X-DC2-3GD5 3GB GDDR5 DVI-I DVI
All at 750kh/s on stock settings, 69-71 deg.  Going to buy 4 more soon.

Prelektro - i would go for asus 280x. toxic is hard to cool and getting really hot and noisy

I agree with these guys.

Running 6 x Asus R9 280x with two more arriving any day now.

745khs out of the box on stock. Voltage is unlocked so you Undervolt to save power and heat which lowers fan noise as well.

Don't recommend the Sapphire Radeon R9 280X Dual-X as they throttle at 72c or something silly.

Go with the ASUS, you wont regret it. I haven't


Title: Re: Best r9 280x
Post by: rwessels on January 09, 2014, 05:40:25 PM
Gigabyte R9 280x Rev2 is best. It produces 730k/s while its undervolted to 1.075V at 64C . Sapphires and other makes are power hungry. No other make can come close to Gigabyte version.

Did you flash the bios to unlock this card?  I have like 8 of these and have no control over the voltage in Afterburner.  Many of the newegg reviews also say the card is locked.


Title: Re: Best r9 280x
Post by: cozk on January 09, 2014, 06:13:51 PM
Gigabyte R9 280x Rev2 is best. It produces 730k/s while its undervolted to 1.075V at 64C . Sapphires and other makes are power hungry. No other make can come close to Gigabyte version.

Did you flash the bios to unlock this card?  I have like 8 of these and have no control over the voltage in Afterburner.  Many of the newegg reviews also say the card is locked.

You need to bios mod it.

Easy, follow crypto badge's guide. (google it)


Title: Re: Best r9 280x
Post by: Gazza1 on January 10, 2014, 07:14:53 AM
The Toxic 280x can run 800kh/s.  voltage is locked though, have to tweak the bios with vbe7


Title: Re: Best r9 280x
Post by: G K G on January 16, 2014, 02:02:56 AM
I think MSI's Gaming3G is good. My buddy has 1 giving a stable 750+kh/s
I use 2 sapphire-VaporX R9 280x, each give only about 720kh/s


Title: Re: Best r9 280x
Post by: Freekje on January 16, 2014, 04:46:28 AM
my 4 vapor-x's run at 1.1v resulting in 720-735KH/s pulling 1060W from 2 mobo's: so including 2*mobo/cpu it's at 2.72kh/w


Title: Re: Best r9 280x
Post by: Amph on January 16, 2014, 02:34:26 PM
The Toxic 280x can run 800kh/s.  voltage is locked though, have to tweak the bios with vbe7

setting for 800?

i'm at 750 with 1000mv core


Title: Re: Best r9 280x
Post by: goldbars on January 16, 2014, 02:37:24 PM
my 4 vapor-x's run at 1.1v resulting in 720-735KH/s pulling 1060W from 2 mobo's: so including 2*mobo/cpu it's at 2.72kh/w

I get about the same for 4 asus oc r9 280x pulling about 1000w-1025w and about 10.2 amps total


Title: Re: Best r9 280x
Post by: cozk on January 16, 2014, 02:54:36 PM
i would go for asus 280x. toxic is hard to cool and getting really hot and noisy

lol @ people considering noise to be a factor when choosing a mining graphic card.


Title: Re: Best r9 280x
Post by: epicjim on January 16, 2014, 08:31:58 PM
Sapphire Radeon R9 280X Dual-X been better than my gigabyte
saphire 750khs 1.025v much cooler than Gigabyte R9 280x Rev2
gigabyte cant get voltage below 1.07, hash only 735khs

and my sapphire finds somehow 25% more shares than GIgabyte

Is your Sapphire Dual X stable on that 1.025 voltage with 750kh? I doubt it is. If you flash Gigabyte R9 280x Rev 2 it can get below voltage 1.07 but its not stable. (or i havent find right settings to make it so)


Title: Re: Best r9 280x
Post by: suchnoob on January 16, 2014, 10:09:06 PM


Will buy 2* cards and a 750w psu


lmk your opinions

I highly advise you to buy at least a 850W PSU. If you want your PSU to last more than 1 month.

How to choose a (<1000W) PSU for mining:
PC power consumption * 1.6 = PSU W


Title: Re: Best r9 280x
Post by: G K G on January 17, 2014, 12:21:00 AM
Any one using sapphire vaporX doing 730+ stable? mine does only 720-730


Title: Re: Best r9 280x
Post by: PhattyBanks on January 17, 2014, 02:35:23 AM
Any one using sapphire vaporX doing 730+ stable? mine does only 720-730
   

what firmware is yours on?  mine does 755k but it has the 39 firmware


Title: Re: Best r9 280x
Post by: PrintMule on January 17, 2014, 02:41:07 AM
I've had best experiences with MSI and Gigabyte so far. Tri-fan solutions manage to get better temps, if the card size is not of concern to you.


Title: Re: Best r9 280x
Post by: Silvano on January 17, 2014, 03:05:27 AM
Any one using sapphire vaporX doing 730+ stable? mine does only 720-730
 

what firmware is yours on?  mine does 755k but it has the 39 firmware

actually you can find only fw41, and for what i know, this fw is worse than older


Title: Re: Best r9 280x
Post by: epicjim on January 17, 2014, 11:03:03 PM
Sapphire Radeon R9 280X Dual-X been better than my gigabyte
saphire 750khs 1.025v much cooler than Gigabyte R9 280x Rev2
gigabyte cant get voltage below 1.07, hash only 735khs

and my sapphire finds somehow 25% more shares than GIgabyte

Is your Sapphire Dual X stable on that 1.025 voltage with 750kh? I doubt it is. If you flash Gigabyte R9 280x Rev 2 it can get below voltage 1.07 but its not stable. (or i havent find right settings to make it so)

gigabyte is flashed, it carshes while under 1.07v

sapphire is stable at 754khs 1.024V 1080/1500 weeks online with those settings,
 if lover anything below 1.024 it crashes once or twice aday
it can go even to 0.950 but there is no sense, it crashes about after 30minutes
sapphires power usage is 30w less than gigabyte

and best thing, it finds  allways more blocks than gigabyte

See I was kinda impressed with your results until your last sentence which jeopardized your entire post.
Finding blocks are direct relationship with your khash rate. And you said "Sapphire finds 25% more shares then Gigabyte". wtf? How is 750 kh is 25% more then 730kh? Are you fail at math?

You might get higher khash setting with some settings but your comments on trashing other r9 280x's are simply BS.


Title: Re: Best r9 280x
Post by: Gazza1 on January 18, 2014, 01:01:45 AM
Stay away from Sapphire until the get the overheating VRMs under control, if they bother to do it at all.


Title: Re: Best r9 280x
Post by: Wipeout2097 on January 18, 2014, 05:57:16 AM
Sapphire Radeon R9 280X Dual-X been better than my gigabyte
saphire 750khs 1.025v much cooler than Gigabyte R9 280x Rev2
gigabyte cant get voltage below 1.07, hash only 735khs

and my sapphire finds somehow 25% more shares than GIgabyte

Is your Sapphire Dual X stable on that 1.025 voltage with 750kh? I doubt it is. If you flash Gigabyte R9 280x Rev 2 it can get below voltage 1.07 but its not stable. (or i havent find right settings to make it so)
He's not claiming high core clock speed. If the voltage regulators are robust, vDrop is not too steep, ASIC quality is high and the ram is low latency, one can get 750 at such low voltage, yes. Even I managed 750 Kh/s on my shitty VTX3d for a few minutes at core 1050 - 1080 (?), vram 1800, 1.03v
 


Title: Re: Best r9 280x
Post by: Sophokles on January 18, 2014, 01:21:42 PM
Sapphire Radeon R9 280X Dual-X been better than my gigabyte
saphire 750khs 1.025v much cooler than Gigabyte R9 280x Rev2
gigabyte cant get voltage below 1.07, hash only 735khs

and my sapphire finds somehow 25% more shares than GIgabyte

Is your Sapphire Dual X stable on that 1.025 voltage with 750kh? I doubt it is. If you flash Gigabyte R9 280x Rev 2 it can get below voltage 1.07 but its not stable. (or i havent find right settings to make it so)

gigabyte is flashed, it carshes while under 1.07v

sapphire is stable at 754khs 1.024V 1080/1500 weeks online with those settings,
 if lover anything below 1.024 it crashes once or twice aday
it can go even to 0.950 but there is no sense, it crashes about after 30minutes
sapphires power usage is 30w less than gigabyte

and best thing, it finds  allways more blocks than gigabyte

See I was kinda impressed with your results until your last sentence which jeopardized your entire post.
Finding blocks are direct relationship with your khash rate. And you said "Sapphire finds 25% more shares then Gigabyte". wtf? How is 750 kh is 25% more then 730kh? Are you fail at math?

You might get higher khash setting with some settings but your comments on trashing other r9 280x's are simply BS.

Finding blocks is in direct relationship with work utility, not hashrate. Plus, there is statistical variation. So it would be interesting over which timespan the one card had 25% more accepted shares than the other.


Title: Re: Best r9 280x
Post by: Shenrox on January 19, 2014, 03:07:03 PM
Gigabyte R9 280x Rev2 is best. It produces 730k/s while its undervolted to 1.075V at 64C . Sapphires and other makes are power hungry. No other make can come close to Gigabyte version.

LOL, what settings are you using at 1.075V?
Iv'e only managed to get 680Kh/s max, but mine is on 1.131V. When i had it stock 1.2V it barely reached 600Kh/s
Thanks


Title: Re: Best r9 280x
Post by: epicjim on January 19, 2014, 05:42:47 PM
Gigabyte R9 280x Rev2 is best. It produces 730k/s while its undervolted to 1.075V at 64C . Sapphires and other makes are power hungry. No other make can come close to Gigabyte version.

LOL, what settings are you using at 1.075V?
Iv'e only managed to get 680Kh/s max, but mine is on 1.131V. When i had it stock 1.2V it barely reached 600Kh/s
Thanks

--thread-concurrency 8921 --lookup-gap 2 --gpu-engine 1049,1049 --gpu-memclock 1500 --gpu-powertune -20,-20 --gpu-fan 75 -w 256 -I 13 -g 2


Title: Re: Best r9 280x
Post by: G K G on January 19, 2014, 08:03:53 PM
with all the configs i could find over here and google my vapourX doesn't give above 730kh/s. i also got a new asus dc2t R9-280x, wich is $50 cheaper than the VaporX.
i had my new asus dc2t for 24h and i'll confirm it gives a steady 750-753kh/s stable.


Title: Re: Best r9 280x
Post by: SimonG on January 19, 2014, 08:51:37 PM
My ASUS 280X-DC2T is running at 800 KH/s each while undervolted to 1100 mV (stock is 1200 mV). I paid extra for the "top edition" model. Would be interesting to see what others get with standard model.


Title: Re: Best r9 280x
Post by: peterlustig on January 19, 2014, 09:16:35 PM
Don't get the Club3d Queen card, as it's voltage is locked.  :-\


Title: Re: Best r9 280x
Post by: zneww on January 20, 2014, 01:16:53 AM
Gigabyte R9 280x Rev2 is best. It produces 730k/s while its undervolted to 1.075V at 64C . Sapphires and other makes are power hungry. No other make can come close to Gigabyte version.

LOL, what settings are you using at 1.075V?
Iv'e only managed to get 680Kh/s max, but mine is on 1.131V. When i had it stock 1.2V it barely reached 600Kh/s
Thanks

--thread-concurrency 8921 --lookup-gap 2 --gpu-engine 1049,1049 --gpu-memclock 1500 --gpu-powertune -20,-20 --gpu-fan 75 -w 256 -I 13 -g 2


I will have to concur with epicjim. Any Gigabyte owner should be using these settings. Started using them last night. I only have one, but if I keep only CGminer running it will stay at 730 Kh/s.

Thanks again jim :)


Title: Re: Best r9 280x
Post by: Real1Guy on January 20, 2014, 01:22:01 AM
So i want buy some more mining power and i am not sure what exact card is the best
my options and prices are
ASUS HD7970-DC2T-3GD5 TOP 3072MB GDDR5 289€
MSI R9 280X GAMING 3G AMD 3GB GDDR5 VGA 284€
CLUB3D R9 280X 3GB DDR5 RQueen 287€
ASUS R9280X-DC2-3GD5 3GB GDDR5 DVI-I DVI 293€
3072MB Sapphire Radeon R9 280X Dual-X Aktiv PCIe 3.0 x16 (Lite Retail) 278€
3072MB HIS Radeon R9 280X IceQ Boost Clock Aktiv PCIe 3.0 x16 (Retail) 265€
3072MB Sapphire Radeon R9 280X Toxic Aktiv PCIe 3.0 x16 (Full Retail) 315€

Will buy 2* cards and a 750w psu
my mobo is  asus M5A97 r2.0
my case is cm elite 334u mid (have to run in case 1 side open cos i have no spare room for a rig)
Amd phenom II x4 965 Black edition 125W
cm hyper tx3 evo
Kingston Hyper X 16gb ddr3 1600mhz
win 7

lmk your opinions

where are those price? in wich country?


Title: Re: Best r9 280x
Post by: nrvkush on January 20, 2014, 01:29:28 AM

Running 6 x Asus R9 280x with two more arriving any day now.

745khs out of the box on stock. Voltage is unlocked so you Undervolt to save power and heat which lowers fan noise as well.

Don't recommend the Sapphire Radeon R9 280X Dual-X as they throttle at 72c or something silly.

Go with the ASUS, you wont regret it. I haven't

I'm running Gigabyte and Sapphire 280x @ 730 and 750 Kh/s.

Sapphire doing the right job.

http://oi40.tinypic.com/ws7plx.jpg (http://oi40.tinypic.com/ws7plx.jpg)




Title: Re: Best r9 280x
Post by: G K G on January 20, 2014, 02:03:48 AM

Running 6 x Asus R9 280x with two more arriving any day now.

745khs out of the box on stock. Voltage is unlocked so you Undervolt to save power and heat which lowers fan noise as well.

Don't recommend the Sapphire Radeon R9 280X Dual-X as they throttle at 72c or something silly.

Go with the ASUS, you wont regret it. I haven't

I'm running Gigabyte and Sapphire 280x @ 730 and 750 Kh/s.

Sapphire doing the right job.

http://oi40.tinypic.com/ws7plx.jpg (http://oi40.tinypic.com/ws7plx.jpg)




I think you have plugged both the cards in the motherboard...
maybe you should use riser cables and keeps the cards a little apart to maintain the temperature issues, then you'll have good performance on both


Title: Re: Best r9 280x
Post by: Shenrox on January 20, 2014, 08:46:45 PM
Gigabyte R9 280x Rev2 is best. It produces 730k/s while its undervolted to 1.075V at 64C . Sapphires and other makes are power hungry. No other make can come close to Gigabyte version.

LOL, what settings are you using at 1.075V?
Iv'e only managed to get 680Kh/s max, but mine is on 1.131V. When i had it stock 1.2V it barely reached 600Kh/s
Thanks

--thread-concurrency 8921 --lookup-gap 2 --gpu-engine 1049,1049 --gpu-memclock 1500 --gpu-powertune -20,-20 --gpu-fan 75 -w 256 -I 13 -g 2


omg, the settings worked, lol, though i only get 715Kh/s thanks


Title: Re: Best r9 280x
Post by: zneww on January 20, 2014, 08:51:33 PM
Gigabyte R9 280x Rev2 is best. It produces 730k/s while its undervolted to 1.075V at 64C . Sapphires and other makes are power hungry. No other make can come close to Gigabyte version.

LOL, what settings are you using at 1.075V?
Iv'e only managed to get 680Kh/s max, but mine is on 1.131V. When i had it stock 1.2V it barely reached 600Kh/s
Thanks

--thread-concurrency 8921 --lookup-gap 2 --gpu-engine 1049,1049 --gpu-memclock 1500 --gpu-powertune -20,-20 --gpu-fan 75 -w 256 -I 13 -g 2


omg, the settings worked, lol, though i only get 715Kh/s thanks


That is about max for our card my man.


Title: Re: Best r9 280x
Post by: G K G on January 21, 2014, 12:49:23 AM
My ASUS 280X-DC2T is running at 800 KH/s each while undervolted to 1100 mV (stock is 1200 mV). I paid extra for the "top edition" model. Would be interesting to see what others get with standard model.
what configs you use?


Title: Re: Best r9 280x
Post by: co42 on January 21, 2014, 04:41:04 AM
mmininginc - I have the ASUS R9 280x DC2 and 100% happy with it.
Like claygraffix I get 750kH/s with it. (undervoltaged + increased the engine clock with 80MHz)
But what I really like about this card is its superb and silent cooling system.

745khs out of the box on stock. Voltage is unlocked so you Undervolt to save power and heat which lowers fan noise as well.
My ASUS 280X-DC2T is running at 800 KH/s each while undervolted to 1100 mV (stock is 1200 mV). I paid extra for the "top edition" model. Would be interesting to see what others get with standard model.
How did you undervolt these cards? I can't get the voltage to change. Running BAMT. Tried AMDOverdriveCtrl and atitweak. Atitweak says the card is supposedly at 1.1V as does cgminer's debug_oc when starting the miner but they are always at stock when mining.

Additionally I had to change both via terminal, because for some reason AMDOverdriveCtrl says "Unable to initialize AMD ADL Library" when trying to start it. Catalyst Control Center cries initialization error as well. I even updated the ATI drivers but they still don't open.

Also to note these cards don't seem to have a switch so I'm not going to flash them.


Title: Re: Best r9 280x
Post by: G K G on January 21, 2014, 07:50:06 AM
mmininginc - I have the ASUS R9 280x DC2 and 100% happy with it.
Like claygraffix I get 750kH/s with it. (undervoltaged + increased the engine clock with 80MHz)
But what I really like about this card is its superb and silent cooling system.

745khs out of the box on stock. Voltage is unlocked so you Undervolt to save power and heat which lowers fan noise as well.
My ASUS 280X-DC2T is running at 800 KH/s each while undervolted to 1100 mV (stock is 1200 mV). I paid extra for the "top edition" model. Would be interesting to see what others get with standard model.
How did you undervolt these cards? I can't get the voltage to change. Running BAMT. Tried AMDOverdriveCtrl and atitweak. Atitweak says the card is supposedly at 1.1V as does cgminer's debug_oc when starting the miner but they are always at stock when mining.


+1
I'm having the same issue....


Title: Re: Best r9 280x
Post by: barabashko on January 21, 2014, 08:44:20 AM
reflash their bios to undervolt, no other way


Title: Re: Best r9 280x
Post by: G K G on January 21, 2014, 05:50:16 PM
reflash their bios to undervolt, no other way
reflash to which version of bios? it has the 39 firmware already


Title: Re: Best r9 280x
Post by: Edvin512 on January 21, 2014, 08:46:45 PM
sapphire trixx can do volt control for asus 280x


Title: Re: Best r9 280x
Post by: crazyates on January 22, 2014, 02:12:45 AM
reflash their bios to undervolt, no other way
reflash to which version of bios? it has the 39 firmware already
You use VBE7 to modify your BIOS. I used ATIFlash to copy the BIOS directly from the card, lowered the voltage, and then reflashed my custom BIOS.


Title: Re: Best r9 280x
Post by: alphacenturion on January 26, 2014, 12:11:56 AM
Sorry to hijack your thread but I am about to order 3 x Asus AMD Radeon R9 280X 3GB PCI-Express 3.0 HDMI  as recommended in this thread.

I am wondering which motherboard and PSU you recommend?

I am considering:

motherboards:

Gigabyte Z87X-OC S1150 Intel Z87 DDR3 ATX
or Asus M5A97 EVO R2.0 AM3+ AMD 970 + SB950 DDR3 ATX

PSU:

Corsair AX1200i 1200W Digital ATX Power Supply 80 PLUS® Platinum

Is the 1200w too excessive? It's a pricey unit but I've heard good things.

Any opinions would be greatly appreciated.


Title: Re: Best r9 280x
Post by: Wipeout2097 on January 26, 2014, 12:13:47 AM
See if the EVGA Supernova 1300W or Seasonic X 1250W is more affordable. Either way, check for 1 point reviews on Newegg and Amazon


Title: Re: Best r9 280x
Post by: alphacenturion on January 26, 2014, 12:46:27 AM
See if the EVGA Supernova 1300W or Seasonic X 1250W is more affordable. Either way, check for 1 point reviews on Newegg and Amazon

1 point reviews for the corsair? I can't find them?

Thanks for the tips on the others I'll see what prices I can find.


Title: Re: Best r9 280x
Post by: Wipeout2097 on January 26, 2014, 12:55:53 AM
See if the EVGA Supernova 1300W or Seasonic X 1250W is more affordable. Either way, check for 1 point reviews on Newegg and Amazon

1 point reviews for the corsair? I can't find them?

Thanks for the tips on the others I'll see what prices I can find.
The Corsair seems even worse. Lots of defective units


Title: Re: Best r9 280x
Post by: crive on January 26, 2014, 01:18:22 AM
I have a mixture of Sapphire Dual X, Gigabyte and MSI gaming 280x's. 
Overall in terms of performance, power usage and price the Dual X comes out on top, especially power usage


Title: Re: Best r9 280x
Post by: Gazza1 on January 26, 2014, 06:20:40 PM
How are the MSI and Gigabyte warranty departments?  Good, bad?


Title: Re: Best r9 280x
Post by: atp1916 on January 26, 2014, 06:51:19 PM
My MSI 280xs are all ~820-830khs.  (https://bitcointalk.org/index.php?topic=433426.0)


Title: Re: Best r9 280x
Post by: Quelle on January 26, 2014, 08:27:21 PM
Got one 280x Sapphire vapor-x and Asus 280x DCII TOP. I would say the hashrates are pretty much the same (no custom bios just 1050/1080 and 1500)

But when it comes to heat and noise... the difference is day and night  :-\ Asus blows sapphire out of the water so bad it aint funny. ++85c core and +110c VRM's on the vapor-x! Fan noise is also terrible. Mind you i kept them on my normal Fractal R3 case with 5 fans but still. I can run the Asus at 50% fan while staying at 75c full load (VRM max 75). I would get the Asus for rigs without cases and pretty much anywhere if it were in stock. Sapphire Vapor-X if its the only thing you can get your hands on with mandatory undervolting and good overall cooling.


Title: Re: Best r9 280x
Post by: G K G on January 26, 2014, 09:03:52 PM
Got one 280x Sapphire vapor-x and Asus 280x DCII TOP. I would say the hashrates are pretty much the same (no custom bios just 1050/1080 and 1500)

But when it comes to heat and noise... the difference is day and night  :-\ Asus blows sapphire out of the water so bad it aint funny. ++85c core and +110c VRM's on the vapor-x! Fan noise is also terrible. Mind you i kept them on my normal Fractal R3 case with 5 fans but still. I can run the Asus at 50% fan while staying at 75c full load (VRM max 75). I would get the Asus for rigs without cases and pretty much anywhere if it were in stock. Sapphire Vapor-X if its the only thing you can get your hands on with mandatory undervolting and good overall cooling.

I've two vapor-x and 1 Asus and had been working inside the same room with these.

Finally i placed these rigs inside garage yesterday. the noise was making me crazy. asus was silent as a cat. but the vapor-x screamed the hell outta me


Title: Re: Best r9 280x
Post by: humorme201 on January 27, 2014, 03:47:09 AM
i have 4 r9 280x Sapphire Dual-X OC version and my hashrates are appauling...what should be the proper cgminer settings...I can't get them above 580 or so...using risers and temperatures on all cards are well below 70.  Using latest Catalyst drivers and SDK from ATI all under Windows 8.1.  Really struggling here...any all help would be greatly appreciated.  Using a Corsair 1200ai PSU and Asrock H81 Pro BTC mobo.

Thank you 


Title: Re: Best r9 280x
Post by: Billyboy402 on February 05, 2014, 11:22:04 AM
i have  the Asus R9280X-DC2-3GD5 but say , i quite like them  cheap but powerful quite and cool

24/7 mine is only running at 62c on stock setting

for for some reason i can get it to get off 700 hash some time 707 to 699 but avg 700

how are you manage to push it pass 700 ,.  when i change any stock setting it get worst ,


Title: Re: Best r9 280x
Post by: alphacenturion on February 05, 2014, 12:44:14 PM
the best 280x is the one you can find for retail price.

good luck. 

This. I've got the MSI - wanted the ASUS but its still decent.


Title: Re: Best r9 280x
Post by: tyfeonas on March 02, 2014, 09:03:54 AM
i have  the Asus R9280X-DC2-3GD5 but say , i quite like them  cheap but powerful quite and cool

24/7 mine is only running at 62c on stock setting

for for some reason i can get it to get off 700 hash some time 707 to 699 but avg 700

how are you manage to push it pass 700 ,.  when i change any stock setting it get worst ,


try this settings.

mine makes 765khs

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
.\cgminer-3.7.2-windows\cgminer.exe --scrypt -o stratum+tcp://*******com:3333 -u user**** -p pass* --intensity 13 -w 256 -g 2 --shaders 2048 --thread-concurrency 8191 --gpu-engine 1100 --gpu-memclock 1500 --gpu-powertune 20 --gpu-fan 68


Title: Re: Best r9 280x
Post by: paul09 on March 02, 2014, 11:07:13 AM
My favorite is Asus TOP edition

Get 800-810kh/s on all of them at 1150/1800.

Cost ~$410AUD(~$365USD) each to buy at local computer shops in Melbourne :)


Title: Re: Best r9 280x
Post by: infojunkiePHD on March 02, 2014, 03:18:21 PM


I have two HIS 280x, they're solid cards. They've got huge coolers on them, and both average 745-750 clocked to  1080/1500.  I did have one that was bad out of the box - ran hot and flaked out, but tbh that's common enough - just RMA it.



Title: Re: Best r9 280x
Post by: Billyboy402 on March 11, 2014, 10:48:19 PM
btw , if your thinking of getting asus cards , make sure there on riser ,

i dont like the layout of the bottom heat pip . it sit on top of the Z87 chip , or sata plugs .....also the big 8 mm pip get hot and is soo close to the bother board


Title: Re: Best r9 280x
Post by: dogecoin168 on March 16, 2014, 03:41:23 PM
Hi from Australia.
This is my setup. I have 2 rigs, each with 4 Gigabyte 280X underclocked to 0.950v.
Each rig averages 840watts and has an average WU rate of 2350/m. Gpu engine 910. Mem clock 1500 TC 8192
Getting 2.8WU per watt. I think its set up correctly for efficient mining. Would appreciate any opinions, as im
new to mining, only started 3 weeks ago.


Title: Re: Best r9 280x
Post by: MinerP on March 18, 2014, 07:23:23 AM
Hi from Australia.
This is my setup. I have 2 rigs, each with 4 Gigabyte 280X underclocked to 0.950v.
Each rig averages 840watts and has an average WU rate of 2350/m. Gpu engine 910. Mem clock 1500 TC 8192
Getting 2.8WU per watt. I think its set up correctly for efficient mining. Would appreciate any opinions, as im
new to mining, only started 3 weeks ago.

what is WU? and what is your hash rate per card? what os are you using?


Title: Re: Best r9 280x
Post by: fra55 on March 26, 2014, 09:11:04 AM
btw , if your thinking of getting asus cards , make sure there on riser ,

i dont like the layout of the bottom heat pip . it sit on top of the Z87 chip , or sata plugs .....also the big 8 mm pip get hot and is soo close to the bother board

Are you talking about V1 or V2 of Asus cards?


Title: Re: Best r9 280x
Post by: 1976 on March 26, 2014, 12:18:27 PM
ASUS R9280X-DC2-3GD5 3GB GDDR5 DVI-I DVI
This is my choice.


Title: Re: Best r9 280x
Post by: tr0ubles0me on March 27, 2014, 02:52:27 PM
https://i.imgur.com/HnN8QBQ.jpg?1

2 x MSI R9 280x GAMING 3G OC Edition with karloth's latest cgminer (20140324):

Code:
{
"pools" : [
{
"url" : "stratum+tcp://eu.clevermining.com:3333",
"user" : "",
"pass" : ""
},
{
"url" : "stratum+tcp://eu.wafflepool.com:3333",
"user" : "",
"pass" : ""
}
]
,
"xintensity" : "4,4",
"vectors" : "1,1",
"worksize" : "256,256",
"lookup-gap" : "2,2",
"gpu-threads" : "2,2",
"thread-concurrency" : "8193,8193",
"gpu-engine" : "1110-1110,1110-1110",
"gpu-fan" : "0-90,0-90",
"gpu-memclock" : "1500,1500",
"gpu-memdiff" : "0,0",
"gpu-powertune" : "20,20",
"gpu-vddc" : "0.000,0.000",
"temp-cutoff" : "95,95",
"temp-overheat" : "85,85",
"temp-target" : "75,75",
"api-mcast-port" : "4028",
"api-port" : "4028",
"auto-fan" : true,
"auto-gpu" : true,
"expiry" : "1",
"failover-only" : true,
"failover-switch-delay" : "60",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"log" : "4",
"log-dateformat" : "0",
"no-pool-disable" : true,
"no-client-reconnect" : true,
"queue" : "0",
"scan-time" : "1",
"scrypt" : true,
"temp-hysteresis" : "4",
"worktime" : true,
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}


Title: Re: Best r9 280x
Post by: fra55 on March 28, 2014, 12:57:12 PM
A good website where to purchase VGA, risers, extension cables...? I already checked on Amazon and ebay but they look a bit too expensive


Title: Re: Best r9 280x
Post by: Billyboy402 on April 18, 2014, 11:41:23 PM
btw , if your thinking of getting asus cards , make sure there on riser ,

i dont like the layout of the bottom heat pip . it sit on top of the Z87 chip , or sata plugs .....also the big 8 mm pip get hot and is soo close to the bother board

Are you talking about V1 or V2 of Asus cards?

All of them . Any card with heatpipe that up and around

I found gigabytes of the best cards . There hear pipe travel along the Pcb .