Best r9 280x

[PhattyBanks]

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

[PrintMule]

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.

[Silvano]

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

[epicjim]

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.

[Gazza1]

Stay away from Sapphire until the get the overheating VRMs under control, if they bother to do it at all.

[Wipeout2097]

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
 

[Sophokles]

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.

[Shenrox]

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

[epicjim]

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

[G K G]

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.

[SimonG]

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.

[peterlustig]

Don't get the Club3d Queen card, as it's voltage is locked.  

[zneww]

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

[Real1Guy]

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?

[nrvkush]

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

[G K G]

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

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

[Shenrox]

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

[zneww]

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.

[G K G]

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?

[co42]

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.