OCing my 7850..safe voltage ?

[Shakabutt]

Hy, i have a MSI Radeon 7850 Power Edition, and i wonder if i can keep it at 1.2 v for 24/7 use?

The card doesnt go past 70 celsius at 1200 core and seems stable, played metro for about 4 hours at the settings, and the OC gave me about 9 more fps.

Is there any danger to keep it at this voltage ?

 

[24601]

AMD goes up to 1.260v on its chips.

As long as you never go above 75C you will probably be fine.

 

[buklau]

I have mine running at 1.228v (max voltage asus tweak allows) 1166mhz (max stable core, tried trixx @ 1.25v, won't do 1200mhz) for 2 months already, no issues and the previous 11 months, I ran it at 1.178v 1125mhz. My load temperature with furmark is about 63C max and I have an after market cooler arctic cooling mono plus.

 

[Shmee]

if it is anything like a 7950, under 1.25v is a good limit, max 1.3v.

 

[Erenhardt]

As long as you never go above 75C you will probably be fine.

Not even close 😉

http://forums.anandtech.com/showthread.php?t=2320139

 

[Shakabutt]

Thanks for the help guys, i gave it some thought and i decided to postpone it, maybe in the future when more games give me trouble, and even metro on VHQ is acceptable for me at 30-40 fps, its good to know that il have some juice for the future....or is there some kind of component degradation that accumulates over time and limits OC's ?

I did score 7800+ graphics score on 3DM 11 so i find that awesome 🙂

 

[Mad Lion]

I just got a used 7850 (HIS standard, not IceQ) for 140 off of the [H] forums. It's ASIC quality is 85% and it has a very low stock voltage of 1.075. I set it to 1000 core and 1250 memory at stock voltage and it never gets above 65 C in the Heaven bench 4.0. For me, that's a perfect overclock. My advice is just go as high as you can at stock before messing around. A high ASIC score isn't a guarantee of better overclocks, but it usually means a lower stock voltage (and therefore more room to increase). GPU-Z's newest version lets you check the ASIC score by right-clicking the title bar and selecting it from the menu. Basically, the ASIC score measures electrical leak or something and the closer to 100%, the closer you are to having a "perfect chip". Some of them are even higher than 100%, but that's extremely rare.

Almost forgot, but I'm relatively sure that all the 7850's use Hynix memory chips that are actually rated from the manufacturer for 5ghz operation. So setting your memory clock to 1250 (5ghz) should not be a problem.