NON-REFERENCE XFX HD5850 OC

mattgal · 17 Jan 2011 at 22:35

Hey guys,

I'm overclocking my HD5850 AVP and managed to find a program for voltage control (Sapphire Trixx) but i'm hitting a wall quite early.

Testing with kombastor benchmark

Stock 725/1000 @ 1.088v 6278 points
OC to 850/1100 @ 1.180v 6623 points
OC to 850/1150 @ 1.280v 7094 points (voltage is too high but can't manage at lower)
OC to 1000/1125 @ 1.275v 6816 points

Memory: anything over 1150 gets unstable and crashes. why?
many here suggested 1.275v for 1000/1250 and i can't even get 1200 (for 5870 clocks) because it will crash after some 25sec of kombastor.

Thanks for your help

Helios1234 · 17 Jan 2011 at 22:38

I wouldn't worry too much about what others can achieve. Different cards will have different headrooms and the XFX cards are generally not as good as the reference cards.

mattgal · 17 Jan 2011 at 23:05

so what voltage should i try for 1050/1150 ?

mattgal · 18 Jan 2011 at 21:59

anyone?

Helios1234 · 18 Jan 2011 at 22:42

Only you can test what voltage will work (all cards will vary). The ASUS I had only managed 950MHz on the core at 1.3V so try that voltage and test how stable it is and how hot.

pastymuncher · 19 Jan 2011 at 09:49

Voltage is going to vary. Mine for example only needs 1.165v for 900/1200 and 1.2v for 1000/1250. It's just a case of trial and error. Keep an eye on temps as well.