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[Official] AMD Radeon HD 6850/6870 Owners Thread - Page 485

post #4841 of 6939
Quote:
Originally Posted by conzilla View Post

I thought max temp for the 6850/6870 is 105c. I do understand keeping it cooler is better but where are you getting your 80c number from?

You said it your self cooler is better.Although its said 100c won't kill the cards ,there not going to last too long at those temps.A card running at those temps is also going to heat up your room and other components in your pc.But most importantly here is the fact that you won't get a good stable overclock at those temps.
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post #4842 of 6939
Quote:
Originally Posted by conzilla View Post

I thought max temp for the 6850/6870 is 105c. I do understand keeping it cooler is better but where are you getting your 80c number from?

mine starts getting unstable above 75. if yours can go higher and not crash i don't see a problem until 95C+ tbh. graphics card will probably be replaced before the extra heat causes any problems. imo.
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post #4843 of 6939
Quote:
Originally Posted by ihatelolcats View Post

Quote:
Originally Posted by arrow0309 View Post

I knew it! It's a gpu temp also (the gpu's memory controller or MemIO). smile.gif
20°C difference is too much. Try to change tim (amount) reapplying a better one and assure you mount your gpu cooler correctly. wink.gif

that's what i meant, anyway you were right about the tim. i replaced the AS5 with zalman "stg2" and it's 10C better. also all the temp registers are within 2C. i think i didn't use enough AS5 even though it was fully coated thumb.gif

That's good. I still wouldn't recommend the AS5 (a 100% silver grease) for naked gpu's like ours, the Zalman stg2 is an excellent choice cool.gif
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post #4844 of 6939
I would like to join the club and start learning about this killer card.

338

I have the gigabyte Radeon HD 6870 GV-R687OC-1GD
post #4845 of 6939
Any one got a good guide for volt modding a 6850. Have been trying everything to get my newer 2nd one over 1.49V with the bios but nothing will work so going physical is the only option.
post #4846 of 6939
Hi i thought i might say Hello and ask if i can join the club tongue.gif lol I have just got my XFX HD 6850 through and what a bit of kit it is! ( still very xcited due to upgrade from a 8600 gt lol)
has crisped everything up n playing games like MW3 and Oblivion on max so very happy lol

Cheers Scariaar
post #4847 of 6939
Quote:
Originally Posted by smoke420 
Thats a first. I never herd of raising voltage first.That would only save time if you have an idea of where your gonna end up.I would suggest the other way around especially if temps are a problem.raising core clock until added voltage is required (no longer stable) and keeping an eye on temps.You can go over 1.26v if temps allow but try to keep it in the low 70's if possible.Another thing you dont want to overclock core and mem at the same time because when you run into instability you wont know where its coming from..Slowly find your max core clock and make sure its stable before overclocking your mem..mem on the other hand is a little more tricky because you may run into ecc (error correction codes) before you see any instability so you will have to run benchmarks to make sure you still getting performance increases as once ecc starts it hurts performance.

Yeah the problem with this is that raising things 10 mhz at a time and testing is slower than setting it to a decent overclock and then backing off. My card does 1000/1200 @ 1.26v no problem (though I have it at 1050/1250 1.3v right now). I think I read somewhere that 95% of 6870s can do 1000 core easily and the voltage is just to ensure the card won't fail under load. It's simply a matter of getting him a decent overclock based on my knowledge and him keying in settings as opposed to stress testing it bit by bit and raising it. Yes, he could get a cooler overclock with less voltage that way.
Quote:
Originally Posted by oldcompgeek 
okay, sorry, I'm slow lol. I kept gpu-z on screen and set it to auto update and noticed when I turned the "memory clock" up,it turned the memory up at different intervals though. finally got it to 1200 by setting the memory clock to 4800. thanks again, I'm about to run vantage (3d mark version 110). I'll update with the results.

Yeah Sapphire Trixx has something in the options tab that says "Show Effective Memory Clocks". Uncheck it and you can see the base memory clock. I guess the RAM speed actually runs at 4X the base clock in some scientific way we probably can't understand, similar to Hypertransport on an AMD system (your HT Ref Clock/FSB may be 200mhz but it's actually 2000mhz to the CPU and RAM).
post #4848 of 6939
now,when I try to start shogun 2, the whole computer restarts. I'm wondering if I have a power supply issue...?
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post #4849 of 6939
looking for benchmark or review of 6870+6850 in crossfire
bonus: with comparison to 6870+6870 CF
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zen dream
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the old nag
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OCZ 30 GB SSD Samsung 2TB WD Black 2TB  WD Green 2TB 
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post #4850 of 6939
6870+6850 in crossfire = 6850+6850 crossfire.
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