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[Official] AMD Radeon HD 6850/6870 Owners Thread - Page 386

post #3851 of 6939
I have reference coolers on my 6870's currently, but I'm planning to water cool them both with GPU blocks only.. I'm mainly doing this to cut down on noise since I have my 1090t under water already, but I'm curious about the OC potential of these cards..

I've been able to run 940/1140 on both GPU's without any noticeable problems, but I would like to push more if possible.
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post #3852 of 6939
Quote:
Originally Posted by Annex;13938158 
I have reference coolers on my 6870's currently, but I'm planning to water cool them both with GPU blocks only.. I'm mainly doing this to cut down on noise since I have my 1090t under water already, but I'm curious about the OC potential of these cards..

I've been able to run 940/1140 on both GPU's without any noticeable problems, but I would like to push more if possible.

May wanna check out the 68xx series overclockers club in my sig
    
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post #3853 of 6939
I have an XFX 6850 Black Edition which I overclocked to 875MHz Core Clock and 1230MHz Memory Clock.

And for the Pics:

XFX-HD685XZNBC.jpg

gpuzpicture.png
Edited by Tman5293 - 6/21/11 at 1:19pm
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post #3854 of 6939
Damn! Nice memory clock there... I'm sure you would be able to bump that core clock by at least 75mhz on 1.2V... at least for my two cards >biggrin.gif

Just curious, how much do used 6850s sell by these days? Wondering if it's worth it to sell my setup on craigslist or ebay...
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post #3855 of 6939
Planning to upgrade from the 5770 in anticipation of Battlefield 3 later this year. The 6850/6870 looks to offer a good upgrade within a price point that suits my budget.

The 6850 im look at is:
[ame="http://www.amazon.com/HIS-PCI-Express-Video-Card-H685F1GD/dp/B0047N0XBM/ref=sr_1_3?s=pc&ie=UTF8&qid=1308610291&sr=1-3"]Amazon.com: HIS PCI-Express Video Card (H685F1GD): Computer & Accessories[/ame]

Or i can get this 6870 for $25 more.
[ame="http://www.amazon.com/HIS-PCI-Express-Video-Card-H687F1G2M/dp/B0047N0XBW/ref=sr_1_2?s=electronics&ie=UTF8&qid=1308668097&sr=1-2"]Amazon.com: HIS PCI-Express Video Card (H687F1G2M): Electronics[/ame]

Would anyone say that it would be worthwhile to spend the extra and go for the 6870?

note...I have to buy from Amazon since I have a giftcard.
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post #3856 of 6939
My Sapphire 6870
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post #3857 of 6939
Both cards are the standerd cooling system, so you not going to do great OC's on either one, so go with the strongest in the 6870, which is only $15 more after rebate.
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post #3858 of 6939
Hey guys -

Just checkin in to ask a few questions. I have had my CFX setup for a few months now, works great. Love the scaling of the 68XX series. As it turns out however, the PCIe lanes are so close on my Sabertooth X58 that the top card really suffocates...
IMG_1617.jpg
I tried adding the extra 120mm blowing at them, didn't really help much. I can't afford to get a watercooling loop right now either.

With summer ambients in home 23-25C, I am seeing idle/web browsing temps around 52-60C on the top card. The bottom card remains OK around 40-44C. I do have fan profiles on, and the top card is still hitting those temps with ~45% fan speed.

Do these temps seem a bit high for idle/normal usage? I don't want to risk degrading the GPU(s). Corsair is releasing a new window for my 650D within the next 5-6 weeks with some 120mm slots (likely 4) and I could see how that helps the temps, and maybe take out the bottom card for now.

Any suggestions/input? Are these temps dangerous? While gaming (Rift, BFBC2, TW:Shogun2, etc) the top doesn't go above 75-80C, while bottom never goes above 70C.
post #3859 of 6939
Those temps are to be expected and are safe. I wouldn't go much higher though. With my 6850s, the top card idled at 50C with 50% fan and I had a slot between the coolers. I went with some aftermarket heatsinks just because of noise.
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post #3860 of 6939
I would try and move the bottom card down a slot so the top one can bet some better airflow.... and you may be able to mount a 80mm between the two quite easily.... but am not sure
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