Allow 1-2% for margin of error. The remaining 3%+ will be the fact that the PCS generally uses Elpida memory where as the DCII uses Hynix AFAIK. Elpida if a few percent slower than Hynix. I see it on my 290P cards as well.
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**WARNING: DO NOT BUY POWERCOLOR 290 PCS+ CARDS FOR MINING (NOW RESOLVED THESE CARDS ARE FINE)!!**
- Thread starter Gibbo
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I'm not so easily convinced, the difference is only 5%.
My 290p: http://www.3dmark.com/fs/2131749
His 290X: http://www.3dmark.com/fs/2540249
A 290p shouldn't be 8% faster than a 290X. The 290X is even clocked 10Mhz higher.
Though I'm not on Windows 8 like he is.
But you're also faster than his 290X DCII. Therein lies the problem. It's a combination of his system and the slower memory I'd wager, not to mention a different OS.
but the DCII uses Elpida memory
http://www.overclock.net/t/1468025/review-asus-r9-290x-directcu-ii-oc-performance-test
both cards use the same memory. so thats not the reason.
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Yep, my DCUII is Elpida as well.
DCII also have Hynix according to a google search. Unless your specific DCII had Elpida, then fair enough. Did you check?
yes it had Elpida memory
so theres no real reason for the different on performance tbh.
yeah something isn't right.
i know about different setups give different results. but the Asus Radeon R9 290X DirectCU II OC and the powercolor 290x pcs+ was done in the same system.
so theres no real reason for the different on performance tbh.
Yes, you can try that. Make sure the bios you flash support Elpida. Don't use a Tri-X/Vapour-X bios as they only use Hynix. Asus reference 290X might be a good one to try, though you will have lower clock speeds of course.
do they use the same vrms, ect, e.g Asus reference 290X?
I believe it's a reference pcb so it should be fine. Might be worth asking a PCS user just to get confirmation.
it says here http://wccftech.com/powercolor-previews-radeon-r9-290x-pcs-triple-fan-cooling-solution/ most are reference pcb but there are some that are custom designed PCB
gareth, it might be worth trying a few different bios, the good thing with the 290 is the dual bios so if it all goes wrong you can just flick the switch, i think if i was looking to do this then i would look at the reference asus 290x, it was used to unlock my vtx3d 290 to a x and that had elpida mem and worked fine and had unlocked voltage
i received the bios and tbh it seems to of improve/fixed it....
now im getting 55.6 fps in Heaven Benchmark 4.0.. before it was 51.2 fps..
in Valley Benchmark 1.0 im getting 62.8 fps, before it was 58.0 fps.
in Fire Strike im getting http://www.3dmark.com/compare/fs/2549381/fs/2544789 , before and after. so its just about the same has the asus card i had before, http://www.3dmark.com/compare/fs/2549381/fs/2535181
now im getting 55.6 fps in Heaven Benchmark 4.0.. before it was 51.2 fps..
in Valley Benchmark 1.0 im getting 62.8 fps, before it was 58.0 fps.
in Fire Strike im getting http://www.3dmark.com/compare/fs/2549381/fs/2544789 , before and after. so its just about the same has the asus card i had before, http://www.3dmark.com/compare/fs/2549381/fs/2535181