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Two 290x's scoring different?

post #1 of 13
Thread Starter 
I have an MSI R9 290X gaming and a PowerColor PCS+ 290X, but weirdly the MSI card won't overclock nearly as high - but consistently scores more when benched, even when the clocks are the same.

This is so strange I even took my PCS+ out and checked it real close to make sure I wasn't accidentally sent a regular 290.

Here's a little sample, my PC PCS+ 290X against my MSI 290X gaming ( both 1120/1420 stock volts).



I've uninstalled/re-installed my drivers now and switched the bios too, but its exactly the same.

Any ideas?
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post #2 of 13
Quote:
Originally Posted by JunoNH View Post

I have an MSI R9 290X gaming and a PowerColor PCS+ 290X, but weirdly the MSI card won't overclock nearly as high - but consistently scores more when benched, even when the clocks are the same.

This is so strange I even took my PCS+ out and checked it real close to make sure I wasn't accidentally sent a regular 290.

Here's a little sample, my PC PCS+ 290X against my MSI 290X gaming ( both 1120/1420 stock volts).



I've uninstalled/re-installed my drivers now and switched the bios too, but its exactly the same.

Any ideas?

Did you check the temps on each during the run, my guess is that the lower one may have throttled due to temp.
 
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post #3 of 13
Thread Starter 
Quote:
Originally Posted by The Storm View Post

Did you check the temps on each during the run, my guess is that the lower one may have throttled due to temp.

thanks for the quick reply buddy, but I can confirm both were below 80 on the core for the runs and after checking both after burner and GPU-Z I can so only slight clock drops on the cores or mem in between scenes, apart from that looks consistent thru-out.
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post #4 of 13
Ok, yeah man that's a good question then. The only other thing that I can think is maybe one is slightly unstable and the volts need to be bumped up? I've seen unstable clocks due to low volts cause low scores.
 
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post #5 of 13
i don't know man they're pretty close? different brands... even cards of the same brand will score a bit different. could just be one card is slightly better than the other. what happens if you switch slots?
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post #6 of 13
Thread Starter 
Quote:
Originally Posted by The Storm View Post

Ok, yeah man that's a good question then. The only other thing that I can think is maybe one is slightly unstable and the volts need to be bumped up? I've seen unstable clocks due to low volts cause low scores.

I've seen different runs vary 10-20 points here or there, but this is nearly a 100 point difference.

To make it worse, the PCS+ on paper seems to be overclocking incredibly, I can comfortably get a stable 1150 on core 1580 on mem that will run thru the benchmarks and stress tests without issue.

I was even a little disappointed the best the MSI 290x could do was 1120/1420 as at the time is seemed incredibly low, but now looking at the real score difference on 3dmark and heaven I'm starting to think it is actually the better card.
Quote:
Originally Posted by nasmith2000 View Post

i don't know man they're pretty close? different brands... even cards of the same brand will score a bit different. could just be one card is slightly better than the other. what happens if you switch slots?

right now i'm doing one at a time in my machine, so using the same slot. Is there any conclusive way to find out of this is a 290 that was bios flashed?

Thanks for the input!
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post #7 of 13
Quote:
Originally Posted by JunoNH View Post

Is there any conclusive way to find out of this is a 290 that was bios flashed?

Thanks for the input!

Most people when they flash a card they just flash 1 bios onto it, maybe flip the switch to the other bios and see if it comes up as the same card, ie shader count. There still should be a sticker on the pcb that states if it is a 290 or 290x, its a long sticker in white or green.
 
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post #8 of 13
One has hynix the other elpida that's probably the difference in memory timings. Haha phone had put it as Hybrid with auto complete smile.gif
Edited by nyxagamemnon - 4/11/14 at 2:55am
post #9 of 13
your pcs might be one of those affected and powercolor is working on a bios fix . . .

http://www.overclock.net/t/1462592/powercolor-pcs-r9-290/440
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post #10 of 13
Quote:
Originally Posted by nyxagamemnon View Post

One has hybrid the other elpida that's probably the difference in memory timings.

This, except Hynix instead of hybrid.
    
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