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New to forums and 2 week old mining veteran of alt coins... hoping to get into scrypt ASIC when available...

Anyways, I've been able to get my R9 280x toxics upto 800 Kh/s (running 3 in a rig I built atm) for a total of 2400Kh/s with no errors.

from what I've been reading that's pretty good, its taken some tinkering to get em that high... I have 2 other XFX R9 280's but they don't play nice with the Sapphire Toxics so they are in their own rig... a bit flakey only around 740kh/s

I'll post configs and rig pics if people are interested.

-Flasheart

http://i206.photobucket.com/albums/bb251/flashrt/800Khs_zps030540e0.jpg


http://i206.photobucket.com/albums/bb251/flashrt/miningrig_zps2c485044.jpg

I'm interested in the pics of the rigs.
How much money did you spend on those?

800Kh/s is very good.  Can I ask is this WU, or if now what's your WU figure looking like?

740Kh/s is also still good.  I get about 720Kh/s reported locally with about 660Kh/s WU; although I've only clocked my cards up to 1060 core and 6000 mem.

BTW, what coins are you mining?

800 Kh/s is very sweet.

I have two Asus R9 280x DirectCU II Top cards which will go up to 740 but that's pretty dicey. I've clocked them down to around 680 so as to keep noise to a minimum. They are almost inaudible at that rate except for the occasional fan burst.

When DataCoin mining using 3 cores of a 4 core i7 CPU, the hash rate on the cards then drops down to around 630 kh/s.

In case anyone is still interested, my desktop is just about usable with the two cards running, although video is jumpy so often switch to mining with a single card.

800kh/s is too nice. I just got a 7950 vom PowerColor and it can only get to 580kh/s maximal. No idea why. How much costs your 280x?

I'm not getting close to 800Kh/s - around 700 on average - will have to have a play around!

Yeah me too. I'm getting this 7950 because it said the best GPU for mining but I never get it to work. Maybe I will try to install Linux and let's see.

I am also ne to bitcoin and really confuse what does R9 280x toxics up to 800 Kh/s (running 3 in a rig I built atm) for a total of 2400Kh/s means or about XFX R9 280. I would really appreciate if you tell me about it in plain English instead of technical words. Or you may even give me the link of some reliable site so I may attain basic knowledge regarding its functionality

i am mining on a 280x too, with 730kh/s. Could u post ur 800kh/s settings? I am useing cgminer

When he says 800kH/s, I'm assuming he is talking about script mining, else we will be talking in MH/s.
the kH/s, MH/s is the number of hash per second, the higher it is, the better.


The R9 280x or XFX R9 280 are graphic card, which are good for mining.

Here are the comparison for differents hardware.
https://litecoin.info/Mining_hardware_comparison
https://en.bitcoin.it/wiki/Mining_hardware_comparison

Mining are for people who want to invest into rig for mining, then selling afterward.
You can also invest into bitcoin/litecoin or any other currency, but it's like trading, you may win fast, you may loose fast. Mining is slower, but "safer". Take into account the electricity bill, and the hardware cost.

Updated 1st post with pics per your requests... +1 if you like   ;D

Nice rig ! How much you spend for that ?

Configs would be nice!! Those are some really good hash rates you are getting! Really interested how you achieved that!

In due time... I spent weeks reading posts and tweaking to get where I'm at... and hint, no one handed it to me it was trying bits that were successful for others and tweaking it... I had to work for it, I think others should to... but I'll give you 1 hint.  Change your thread concurrency to 8193 and see what happens.  ;D


The rig pictured will be converted to my main gaming system once I get ahold of an ASIC scrypt miner, so I went a bit big... it has 16GB ram, high end I7 processor, and a 2nd PSU so I can fit in up to 3 more graphics cards...  That said what you see is about $2500.  Figure another $1200 will get me to 4.8Mh/s

amazing ! its better than my 2X R9 290 lol
with them i get only 1630kh
anyone can help me in finding the sweet spot please?

Sweet rig man!!

Just be careful about power requirements if considering 3 more GPUs+ 2nd CPU. Each 280x uses about 250watts and your typical home outlet supplies 15amps which means you should load no more than 1440watts or realistically about 5 280xs + cpu/psu overhead. See here for more info: https://bitcointalk.org/index.php?topic=355305.0

Is that non powered 1x-16x risers?

I'm extremely impressed that you were able to pull 800 KH/s out of those cards.

My Gigabyte and ASUS 280x cards get only 730 KH/s flat on both, though I haven't overclocked either. I actually had to downclock both because they were unstable at their factory clocks. If you could post your config, that would be awesome. Changing the thread-concurrency to anything higher than 8192 throws an error saying it's out of memory.

Also, what type of metal rig do you have? I need something more than the table my mining rig is sitting on right now.

Non powered 1x-16x risers, but motherboard has a total of 3x 12v connections on it (1 for CPU, 1 for GPU's, 3rd one I'm not positive on).  I'm running the rig in my garage, taking advantage of the cool weather and its on a 20A circuit atm, but thanks for the power tip.. I may only go 5 GPU's but we'll see.


The metal rig I have is just something I put together after looking at other people's rig designs... its 1" square tube aluminum and some smaller angled and straight aluminum for bracing, all held together with rivets.

I've found that different cards behave differently with configs... PM me your config file and I'll give you some suggestions, but I'm no expert... yet.

Can't get my over 710kHps...
--thread-concurrency 8192 -g 2 -i 13 --gpu-memclock 1500 --gpu-engine 1027.

Anyone with a Powercolor R9 280 that has gotten it higher that can post your settings? :)

i never come over 720kH with my 280x :(

setx GPU_MAX_ALLOC_PERCENT 100
cgminer.exe --scrypt -o stratum+tcp://nl.anoncoinpool.net:5555 -u xxxxx -p xxxx --lookup-gap 2 --thread-concurrency 11200 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 30-75,30-75 --temp-cutoff 90,90 --temp-overheat 85.85 --temp-target 72,72 --gpu-memclock 1500,1500 --gpu-engine 1080,1080 --gpu-powertune -20,-20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

i'm getting 745kh/s first secound 755kh/s

What brand do you have? :)

R9 280x,you can try 7950 or7970

Very nice setup and rates.

 800 Kh/s ,that is nice,i also want to buy a card

Wow ... nice hashrate for a r9 280x!

I've got some r9 290x's and run about 880kh/s per card...

What coin are you mining be the way?

dont buy powercolor r9 280x. These cards are ni e for gameing but notthe best miner cards. A friend of mine is useing 2of them for mining.. The cards are very loud, useing much power. The might be a littlbit cheaper than other cards, but well... If u like tiny plane turbins next too you, then you should buy them.
I have a sapphire r9 280x. Running on 65% cooling power with never more than 71•c. i have 71 celcius for heat treshhold.

Hope thats helpfull for someone :-)

Very nice hashrate for the 280x. 800kh/s is just about what a stock r9 290 does. I have an r9 290 (HIS brand) and I'm able to get ~870kh/s with a little overclocking. Although its not as well known as cgminer, I use Reaper to mine. Works well for me.

I really dont have these heat problems, my VDDC is never higher than 1.1 and my temp is around 73C.

Nice performance! I have six 280x cards (ASUS) and all of them give only ~700KH/s.

additional tuning, each r9 280x must 750kh

Nice config! Optimal for r9 280x !!!

What settings are you using?

I'm getting 700 Kh/s with the MSI R9 280X.  These are the setting I am using:

-I 13 -g 2 -w 256 --lookup-gap 2 --thread-concurrency 8192 --temp-target 75 --auto-fan

For some reason if try with higher core/memory clock settings using "--gpu-engine --gpu-memclock " I get worse hashrates.

I am using these settings for my Sapphire R9 280x Vapor-X.

--scrypt -o yourpoolhere:port -u XXX -p YYY --thread-concurrency 11200 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 40-65,45-65 --temp-overheat 85.85 --temp-target 71,71 --gpu-memclock 1500,1500 --gpu-engine 1080,1080  --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

For automatic restarts i would use CG-Watcher. I set it up for restarting cgminer every 2 full hours for letting them reconnect (sometimes they just stopped working (no work) without getting to work again automatically).


*edit*
in the beginning of my xyz.bat file i have:

color 02
setx GPU_MAX_ALLOC_PERCENT 100

U dont have to use color 02 but i rly like that green color :)

this is seriously impressive..

Nice rig, how much did you get those cards for? Also what power supplies are you using? Why would you mine earthcoin with 2.4MH/s though, why not coin like Litecoin?

Wow, very nice.  I can only get up to about 700ish, but my case is more of a gaming case and not open so my temps get really high :(.

Good question.  I mined DOGE for a few days solo and got a few million coins... when they started trading on cryptsy I cashed in for about 2BTC and converted to LTC (which was undervalued IMHO)... so my 2.4Mh system earned me about 60 litecoins in 3 days.

what can your 2.4Mh system do?

mine can fry an egg.

Im running Asus 280x and getting 775~ at 73C, for Florida (the only state not participating in winter) that's not bad temps.

Currently have mined 2000 MMC on my spare computers, and working earthcoins at the moment.

Pissed that I have 2 video cards doing nothing atm, cause my risers haven't come in yet.

Sapphire Dual X

woooooow

800 Kh/s is very sweet

setx GPU_MAX_ALLOC_PERCENT 100
cgminer.exe --scrypt -o stratum+tcp://nl.anoncoinpool.net:5555 -u xxxxx -p xxxx --thread-concurrency 11200 -g 2 -I 13 -w 256 --gpu-fan 30-75,30-75 --temp-cutoff 90,90 --temp-overheat 85,85 --temp-target 72,72 --gpu-memclock 1500,1500 --gpu-engine 1080,1080 --gpu-powertune -20,-20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale --lookup-gap 2

Sapphire Dual X 280x R9


Here is a proof:

https://anoncoinpool.net/images/proof.png

I have 280x and 7950 in crossfire now. Or without the bridge, tried with bridge before, but you catch my drift. What I'm wondering is, how can you hold your temperatures so low?
I'll post some pics of my computer. (I will fix all the cables tonight, this is just temporary to see how it works)  :P

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-prn2/v/1496170_762805643732945_866993719_o.jpg?oh=9cf1d2a87f9642bb3e2d46c79b27a8f1&oe=52BA3A47&__gda__=1387990891_99d63d2859e9f9016d64d8025f889a2d (https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-prn2/v/1496170_762805643732945_866993719_o.jpg?oh=9cf1d2a87f9642bb3e2d46c79b27a8f1&oe=52BA3A47&__gda__=1387990891_99d63d2859e9f9016d64d8025f889a2d)
https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-prn2/v/1415255_762803563733153_571049276_o.jpg?oh=4341f2050e820992a515afa2fcbe2cc9&oe=52BA91D6&__gda__=1388010554_80a3d3f4efd19f37076efed1ffab174a (https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-prn2/v/1415255_762803563733153_571049276_o.jpg?oh=4341f2050e820992a515afa2fcbe2cc9&oe=52BA91D6&__gda__=1388010554_80a3d3f4efd19f37076efed1ffab174a)

You see the hanging fan? I have another fan on the side of the chassi too. 2 fans top.

http://gyazo.com/0019c1f6a8b2c553f51b8e955bbff53d (http://gyazo.com/0019c1f6a8b2c553f51b8e955bbff53d)
http://gyazo.com/7896aa536110a6b74714c3edcdfd17db (http://gyazo.com/7896aa536110a6b74714c3edcdfd17db)

 >:( I'm only running an R9 270X and getting 400-445ksh on average. They were all out of the R9 280's when I was looking to get one. Does anyone have a link to a guide to tweak the settings. I'm running bare bones right now on xubuntu and would like to pimp it out as much as possible.
thanks

Best, try to craft / buy an open aluminum setup (similar to my photo on page 1).  Alternatively use the milk crate trick.  You want a minimum of a double card width between each card... to do this you will probably need PCI-e risers 1x-16x should work.  Depending on your MB and cards you may need cables that have a molex power connection.

after that, find a cool room (garage or basement will work if you don't have mice) and hook up a fan.

hope this helps.

Hello,
I'm new to altcoins and I want to mine some of them. Should I buy this AMD R9 280X? Is it still a good graphic card to mine scrypt altcoins?
Thanks

the best

Thanks for the help :D
I'm going to buy heatsinks whenever the store is open, I guess in 2 days. As you can see I've put a cap between the GPU's which have given the 280x a bit more air atleast. Going to get PCI-e risers and another 280x when I've sold some lottocoin then I will also buy a new PSU which I hope will support 3 PCI-e 12v connectors :)

I live in Sweden so that shouldn't be such a problem this time of the year, even if it's pretty warm outside (5-6C) :)

..with these settings i only got around 660 kh/s with my XFX R9 280X TDFD.

this works best for me (~740 kh/s):


i am running cgminer-3.7.2-x86_64 on xubuntu 13.10 with catalyst 13.101. does anyone get better results for the same card on linux?

cheers

Hi,

I´m getting stable 750KH/s with using "shaders 2048" and "thread-concurrency 0". Slight GPU over clock to 1088MHz and temp is 75c with 44% fan. Card is Asus R9 280X. Would like to get closer to 800KH/s but lets see is it possible :D

My settings:http://bittinikkari.blogspot.fi/2014/01/radeon-r9-280x-tositoimissa.html (http://bittinikkari.blogspot.fi/2014/01/radeon-r9-280x-tositoimissa.html)

really nice, i happen to have to r9 280x vapor x and i get about 765 khz.

Hi,

I setup my 2x Asus R9 280x (default clocks are 1070/1600) and I have have tried to adjust the cgminer settings today (--thread-concurrency, -g, --gpu-memclock and --gpu-engine). Numbers seems to be fine (GPU#0 743Kh/s and GPU#1 761 Kh/s), when compared to others results.

http://aijaa.com/img/b/00865/12942281.jpg

Cmd:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
"C:\cgminer\cgminer.exe" --scrypt -o stratum+tcp://stratum.dogehouse.org:3333 -u x -p x --thread-concurrency 11200 -g 2 -I 13 -w 256 --gpu-fan 30-80,30-80 --temp-cutoff 90,90 --temp-overheat 85,85 --temp-target 72,72 --gpu-memclock 1500,1500 --gpu-engine 1080,1100 --gpu-powertune -20,-20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale --lookup-gap 2

I am adding the two missing similar GPU's to the system as soon as I get the damn riser cables :) I am pretty happy with the results now :)

can you share your command line you run to get 800 kh/s

This is awesome  :o

What takes the Toxics to 800 Kh/s? Low latency VRAM.

280x's are sweet but they've been very rare to find the last month and are priced over MSRP by about $100 right now. It is much more efficient right now to buy standard R9 270's (non-x versions) then overclock them.

I have 8x standard 270's going right now running at 425-440k each. Standard 270's also only take 1x PCIE 6pin power plug as well. Cost was 179.99 per card and all of them included BF4 key tokens which were able to be sold for about $25-30 each.

What brand and settings allow 440 kh/s ?

800 kh/s on a R9 280?

I'm getting 880 kh/s on a R9 290x.  Should I be getting more?

Mining is just a hobby for me - I don't have any rigs anymore.

Not bad.  I got a gigabyte 280x and do about 740.

Funny, because back in November XFX was one of the underdogs people didn't want.

Nice performance.  Post your config please.

Finished updating my rig... new pics, specs, config, etc can be found here...

https://bitcointalk.org/index.php?topic=395199.0

My rig with 2xSapphire R9 280X Vapor-X runs at 2 * 650Kh/s :(
And the rig with 2xSapphire R9 290 runs at 2*700Kh/s :(
OS: Kubuntu 13.10
Driver: 13.11 Beta v9.4
cgminer 3.7.2

sapphire 280x dual-x getting about 730-740 per card temps are at 68-70

These are basicly oced 7970 cards, so 740 is a must for them.

sapphire 280x vapor x getting 700khash and temp hovering around 68-72

Sapphire 280x, 640 KH/s, but only 150W ;D

Very nice setup.  Toxics are great cards.   8)

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 :(

Try to play with the settings, what is your clocks?

1020

Most important for scrypt is memory overclock.
You have to find right core/mem clocks to achieve best results. What is your voltage? Can you change it?

voltage is 1200, i can change it using sapphire trixx

That's incorrect when it comes to both 7950 and 280x.
Sweet spot for 280x and high core clock for 7950, atleast for mine :)

i wanted to config mines so post your config Flunder707 8)

he pushed his card to 1150 at least, with I 13 -g 2 and thread-concurrency 8192

UPDATE: with some more tweaking and a little OC, managed to squeeze 800KH/s from my Asus 280x DC2 TOP

600khs for MSI 280x using only 70watt of power

Vapor-x r9 280x, easy 730-740 kH/s

Setup Sapphire trixx vdd voltage to: 1181 (GPU-z shows VDDC voltage: 1.115 V, going lower, system will become probably unstable).
cgminer (put temp. settings as you wish...): --shaders 2048 -g 2 -I 13 -w 256 --auto-fan --gpu-memclock 1485 --gpu-engine 1080 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

try it, and report ;)

So would you guys recommend an R9 280x over a Sapphire HD 7950 card?