is anyone using a R9 290 non-x and R9 290x together?
What is the difference in hasing power between them at roughly same GPU and mem clocks?
Thanxx.
What is the difference in hasing power between them at roughly same GPU and mem clocks?
Thanxx.
Not much difference....
GPU0 and GPU2 on risers = 290s, GPU1 in PCI slot = 290x. All 3 x GPUs are modded with Stilt ROM.
Claymore v8, -i 6, W10, Celeron 1840 on ASrock H81 Pro BTC, 8GB RAM, 24-34GB Windows Virtual Memory.
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ZEC: 11/28/16-03:13:49 - SHARE FOUND - (GPU 1)
ZEC: Share accepted (78 ms)!
GPU0 t=78C fan=99%, GPU1 t=80C fan=99%, GPU2 t=77C fan=99%
ZEC: 11/28/16-03:13:53 - SHARE FOUND - (GPU 2)
ZEC: Share accepted (78 ms)!
ZEC: 11/28/16-03:14:02 - New job from cn1-zcash.flypool.org:3333
ZEC - Total Speed: 810.672 H/s, Total Shares: 78457, Rejected: 32, Time: 73:43
ZEC: GPU0 267.759 H/s, GPU1 280.460 H/s, GPU2 262.452 H/s
ZEC: 11/28/16-03:14:07 - SHARE FOUND - (GPU 0)
ZEC: Share accepted (78 ms)!
ZEC: 11/28/16-03:14:10 - SHARE FOUND - (GPU 1)
ZEC: Share accepted (79 ms)!
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The 290X speed is 280 while the 290 speed is 264. So that is about 6% differece. If the frequency is the same, that is still some increase.
I have way more rejected shares
Why fans all 99% ?
I bought them used for a test rig. The 290s are notorious for being loud and hot.
So -fanmax 99 is better than an overheated GPU, you can always replace fans....
I have seven 280x, I take down the originals fans and put on fans that I buy on the web, I think the price was about 1.3 eur for one fan, I put 3 fans per card. Supply for that fans I take directly 12V so they are always on 100%. When they starts slowing down, I just take some silicon oil in spray and they run like new. Beacuse they always run on 100%, my cards run cooler.
