Gigabyte 5870 on Liquid Nitrogen 8:30PM 5/1/2011

[I.M.O.G.]

Got the Gigabyte 5870 covered in vaseline and its ready to rock. I'm eating dinner, and getting a couple items downloaded to get ready.

I don't have any voltage control other than OC Guru. Its a non-reference vreg, so if anyone has a lead on a modded bios that yields more voltage for a Gigabyte 5870, I am interested. Otherwise, I'll just be seeing how far it scales with cold.

Livestream will be embedded in this thread once I'm live, and you can also watch it at www.livestream.com/overclockers

Rig: 2600K, MIVE, 4GB Gskill Trident, Gigabyte 5870

[lstream]overclockers[/lstream]

 

[Bobnova]

Have you tried opening the bios file in RadeonBiosEditor?
If not you could give it a shot, or send me the bios and I'll poke it. Odds are it won't work, but you never know.

I'll stop in if possible!

 

[xsuperbgx]

would the msi afterburner for the 5870 lightning work on it?

 

[Bobnova]

He's live, btw!

 

[I.M.O.G.]

Gigabyte OC Guru is flaky. Not sure what voltage I set, but I had it at its max setting all night... It gave a reading of 1.07V on the core. GPUZ read 1.125V on the core, no matter what I set in OC Guru.

Once I got things frozen, I realized the main probe in the base of the pot was broken, so I didn't have accurate temp readings all night. This 5870 has a cold bug, which I think might be around -70C, but I can't be sure. I had a secondary probe stuck below the insulation near the core, and it would read about -50C when I would start to get artifacting and poor performance from the card.

Anyways, pulled in around 30 points from the card in 3dm03, 3dm05, and 3dm06. The system stopped running when I was trying to get aquamark to run - not sure if that was the board getting soggy, or the card giving out. We'll see later this week once things dry out and I get a chance to try them again... I'll get the probe fixed first though. Any way you cut it though, this 5870 is no where near as good as the 4890, and I would need better voltage control to get much better scores.

3dm06 13 boints: http://hwbot.org/community/submission/2163505_i.m.o.g._3dmark06_radeon_hd_5870_31850_marks
3dm05 14.1 boints:
http://hwbot.org/community/submission/2163502_i.m.o.g._3dmark05_radeon_hd_5870_43049_marks
3dm03 13.2 boints:
http://hwbot.org/community/submission/2163499_i.m.o.g._3dmark03_radeon_hd_5870_102252_marks

I'll beat all those scores once I get the temp probe replaced.