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Just purchased a Sapphire 6870 wish to clock

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July 27, 2011 7:08:14 PM

SAPPHIRE 100314-3L Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Sapphire HD 6870 1024 MB BIOS http://www.techpowerup.com/vgabios/96352/Sapphire.HD687...
Is this something I really need (it sounds like a dos based bios to me) or should I just use afterburner to clock the card? Sapphire has produced a beta version ofSAPPHIRE_TriXX_Installer_beta_v3_634354049433901656.05 to adjust GPU settings. I haven't tried it yet because the video card won't be arriving till noon tomorrow.
I understand also after settings of GPU run a stress tester (which is best to use?) and do I run a 3d game while running the stress tester or what? :hello: 
Thanks the noob.
a b U Graphics card
a b K Overclocking
July 27, 2011 10:10:17 PM

AfterBurner usually comes highly recommended by many overclockers, myself included. However i have no experience of using it with ATI cards, only Nvidia
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a b U Graphics card
a c 78 K Overclocking
July 27, 2011 10:36:36 PM

Afterburner is a freeware program from MSI that is highly appreciated by the OC'ing community - you can use it on both nvidia and AMD/ATi cards
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July 28, 2011 5:08:20 PM

I'm using the latest Beta version of Trixx (download it from Sapphire website) to overclock my Sapphire HD5850 Xtreme and I was able to overclock it from 725/1000 to 850/1150 (without voltage increase) and 1000/1250 (with voltage increase). However I stays at 850/1150 for longevity of my card since it is much colder (with my room temp of 29C, my card stays at 78C average after 8 hours of Furmark stability test).
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a b K Overclocking
July 28, 2011 5:30:39 PM

You need an A/C hasappra....29c ambient seems uncomfortable and not very conducive to OCing anything....Thats rather warm for the GPU...My old 4870 OCed and quite dirty used to get to 82c before the fan started to some funny stuff...it would ramp up and down...and gameplay suffered as a result of the overheat. I suspect at those ambient temps your OC will be limited on any component unless you have some seriously good watercooling...BTW..OP best stress test is furmark and the best bench program is unigine's heaven 2.5
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a b U Graphics card
July 28, 2011 5:33:09 PM

I have a pair of 6870s by XFX, stock clocked at 900/1050. They both do 950/1150 quite easily on afterburner, running 24/7 with no issues. The ones I have use the reference cooler and don't get too hot. Your card should be able to do the same on afterburner without hassle.

As for stress testing, there is a tool called furmark that does a good job at that. You can almost hear the transistors on your GPU crying.
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July 29, 2011 9:39:12 PM

lowjack989 said:
You need an A/C hasappra....29c ambient seems uncomfortable and not very conducive to OCing anything....Thats rather warm for the GPU...My old 4870 OCed and quite dirty used to get to 82c before the fan started to some funny stuff...it would ramp up and down...and gameplay suffered as a result of the overheat. I suspect at those ambient temps your OC will be limited on any component unless you have some seriously good watercooling...BTW..OP best stress test is furmark and the best bench program is unigine's heaven 2.5


Thanks for your suggestions, but I think I'm fine with 29C and I like it :-). I can't stand cold actually and I live in a tropical country. About GPU temp, I read so many articles about GPU overclocking, as long as it stays under 90C, my GPU will be perfectly fine. My previous build was using HD4850 and because of its poor cooling design I'm only able to OC 5% and its average temp using Furmark is 84C, but it runs perfectly fine after 2 and a half year until now and I'm using it right now. BTW, my HD5850's max temp on Crysis 2 is 68C and HD4850's max temp on Crysis Warhead is 76C.


About dirtiness, I always clean my CPU every 6 months (every part of it including inside my PSU). :-)
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a b K Overclocking
July 29, 2011 9:53:05 PM

Right on thats cool....My 4870 HD ran 75c with the fan at 75% while playing Crysis DX 10--> Very High Settings@1366x768 vsync off 8xAA avg. FPS gaming was around 35 fps....the ending is where it got taxed avg. fps dropped to 12 fps and overheated the card....temps hit 91c before crashing out
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August 5, 2011 12:14:43 PM

Best answer selected by irvinparrett.
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a b U Graphics card
a c 78 K Overclocking
August 5, 2011 6:52:11 PM

and thank YOU for the vote! Enjoy OC'ing on that beast :) 
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a c 705 U Graphics card
a c 294 K Overclocking
August 5, 2011 6:59:34 PM

This topic has been closed by Area51reopened
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