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I just bought the new 7870 LE Tahiti card, it will be my first time overclocking. Any tips? - Page 6

post #51 of 113
Quote:
Originally Posted by cooler2442 View Post

Here is the score at 1200.

http://www.3dmark.com/3dm11/5932858

as i said check the above user's scores . his graphics score is 9800 at 1200 mhz

also here is a stock Sapphire HD 7870 XT (Tahiti LE). scores around 8000 in 3d Mark 11.

http://www.kitguru.net/components/graphic-cards/zardon/sapphire-hd7870-w-boost-tahiti-le-review/7/
http://www.hardwareheaven.com/reviews/1651/pg4/sapphire-hd-7870-xt-with-boost-tahiti-le-graphics-card-review-3dmark-2011.html

is power control maxed to +20%. your card might be throttling and so the low scores. also that still does not explain why the physics score on the core i5 760 at 4 ghz is so low.
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post #52 of 113
Thread Starter 
Quote:
Originally Posted by raghu78 View Post

as i said check the above user's scores . his graphics score is 9800 at 1200 mhz

also here is a stock Sapphire HD 7870 XT (Tahiti LE). scores around 8000 in 3d Mark 11.

http://www.kitguru.net/components/graphic-cards/zardon/sapphire-hd7870-w-boost-tahiti-le-review/7/
http://www.hardwareheaven.com/reviews/1651/pg4/sapphire-hd-7870-xt-with-boost-tahiti-le-graphics-card-review-3dmark-2011.html

is power control maxed to +20%. your card might be throttling and so the low scores. also that still does not explain why the physics score on the core i5 760 at 4 ghz is so low.

Yeah that seems really weird. I have CCC at +20% and manual fan control 50%. Any thing else I should check? I do have a ton of stuff open while running 3Dmark not sure if that makes any difference.

Do you think my system needs a clean install? I switched from Nvidia to AMD but I followed the guide on how to delete all the Nvidia registry stuff and all that jazz.
post #53 of 113
before doing a fresh os install try this. uninstall your graphics card in device manager. reboot pc and install 13.2 beta or 13.1 whql drivers. run with AMD overdrive enabled. power control at +20%. check at stock speeds, 1.1 ghz, 1.2 ghz. if the scores don't match with expected scores between 8000 and 9800 then there is some problem. monitor core and vrm temps using gpu-z or hwinfo32. try heaven 3.0 benchmarks too and compare with other HD 7870 XT users.
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post #54 of 113
Thread Starter 
Quote:
Originally Posted by raghu78 View Post

before doing a fresh os install try this. uninstall your graphics card in device manager. reboot pc and install 13.2 beta or 13.1 whql drivers. run with AMD overdrive enabled. power control at +20%. check at stock speeds, 1.1 ghz, 1.2 ghz. if the scores don't match with expected scores between 8000 and 9800 then there is some problem. monitor core and vrm temps using gpu-z or hwinfo32. try heaven 3.0 benchmarks too and compare with other HD 7870 XT users.

Yeah has to be something wrong just tried at 1.1 and its about the same:

http://www.3dmark.com/3dm11/5933143

Wonder if its my processor bottlenecking or something. I just OCed the processor before getting the video card. I'll try uninstalling the drivers and reinstalling right now.
post #55 of 113
Quote:
Originally Posted by cooler2442 View Post

Well I'm pretty disappointed.


I got the card to 1200/1500 only. Clocks itself went fine and 1200 is the limit before I see artifacts. But at 1200 clock the memory does not want to go anywhere from 1500. Even 1505 makes artifacts. I can tone down the clocks from 1200 to say 1140 and then memory goes to 1580 but that would be the limit.


1140/1580 = Graphics Score 8932 on 3Dmark 2011
1200/1500 = Graphics Score 9236 on 3Dmark 2011.


So I guess I'm staying at 1200/1500.

Temps aren't an issue. GPU Z says Max GPU Temp is 68c, Max VRM temp is 64c.

Well the memory is probably heating up as the core heats up. Or is it the same even with high fan speed?
post #56 of 113
Thread Starter 
Quote:
Originally Posted by raghu78 View Post

before doing a fresh os install try this. uninstall your graphics card in device manager. reboot pc and install 13.2 beta or 13.1 whql drivers. run with AMD overdrive enabled. power control at +20%. check at stock speeds, 1.1 ghz, 1.2 ghz. if the scores don't match with expected scores between 8000 and 9800 then there is some problem. monitor core and vrm temps using gpu-z or hwinfo32. try heaven 3.0 benchmarks too and compare with other HD 7870 XT users.

Quote:
Originally Posted by Derpinheimer View Post

Well the memory is probably heating up as the core heats up. Or is it the same even with high fan speed?

9136 graphics.

http://www.3dmark.com/3dm11/5933523

I did a reinstall and ran it at 1175/1500. I tried 1200 but 3Dmark crashed.
post #57 of 113
that is about what i imagine it should look like here is a 7870 crossfire setup look at my specs and compare all my stuff is stock speeds just for a start and i will post a OC setup and show you the performance change

http://www.3dmark.com/3dm11/5941231
post #58 of 113
here is the performace change on mine OC there is a difference but not that huge but in some games it would help a little but not a huge performance increase also notice i have my cpu only at 3.6 at the moment aswell i will do one more bench and change the cpu speed up

http://www.3dmark.com/3dm11/5941326
post #59 of 113
here is the 3d marks score when i have every thing OC and stable but my heat was up 10c on the cpu and the gpu increase was 5-8c higher as well just an fyi

http://www.3dmark.com/3dm11/5941460
post #60 of 113
so as you can see from the scores there is a change but your Cpu speed is what really makes the difference the gpu only changes a little but the cpu adds alot of performance but heat is the trade off higher clock speeds and alot more heat lol. i dont run my hardware at higher clocks just because you do gain some performance but you add alot of heat and in gaming you will burn out your hardware much faster by running higher heats just from experience i have noticed if you want beter performance you need better hardware at stock speeds and mild OC settings so you are not degrading the hardware so fast if i ran my computer at the highest settings for a year i could loose 1 year of hardware life even with water cooling it will degrade the cpu and gpu but if you dont care about resale then go hard and just expect some issues later on down the road and no warrenty most important OC voids all warrenty lol but info is always good to have and you can make your choice from there
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