More results with ASUS GTX580 DirectCU II

[Splave]

Def, going to to try on 8800GTX with IHS...Then if it works well I will try with it off :X

[KanGaXx]

lol
the final sacrifice hihi

[G.Foyle]

I popped the lid on our sample and found air bubbles The paste was also hard as a rock, it was very hard to remove it.
Sadly it didn't help me one bit with the clocks, BUT at least I can now bench full pot at known stable clocks without colored screens every now and then - just driver resets when I go too high.

[SF3D]

I had small drop of ln2 left. Decided to try vantage GT 2 and 1500MHz was easy. 1530MHz run was fine until ln2 ended during the large explosion in GT2. Pot heated up very quickly so that run did not pass.

I think 1550MHz will be possible in 3Dmark Vantage.
Now I will try to get one more bench session, before my short break. Timing is so annoying

[Splave]

great GPU what volts and temps does she like? Over 1.58 in dx10ordx11 is not happy

[oanvoanc]

made the cbb mod yesterday on my gtx580 directcu ii which allowed me to boot lower than -60 degree celsius withou any issues.

i still cant go lower than -115 as the display turned black, no matter during idle/load, stock voltage up to 1,5v.

any solution for that or does my card have a coldbug under -115 degree?

thanks for your suggestions

as the card scales well with volt (1,38v for 1300mhz 3dmark03 and 1,45v for 1300mhz heaven stable) i would love to check, if it scales with more cold as well.

[Dualist]

^^^^ stock bios.? or did you try this one...

http://www.xtremesystems.org/forums/...1&postcount=64

[oanvoanc]

hey dualist.
i think, i used exactly this bios. bios version in gpuz is 70.10.17.00.00

edit:
just figured out, that my mod got loose... just 2 points were connected.... will test again and report back.

edit2:
resoldered the cbb mod and i still have the same issues... black screen below -115 degree
is it possible, my card just has a coldbug?

[rsannino]

If Temp < -100° C i have artifact, seems a memory problem and the same thing about two CU II and a EVGA 580. Someone else has ever had similar problems? I have to warm up to -80, start doing bench and bring the temperature gradually over the -100 ° C . If it crashes I have to do it all again by heating the pot.

BR

Roberto

[matose]

You must set over 1.75v VMEM in order to bench under -100

[rsannino]

i set 1.80 or 1.86 ... same problem , i use this meme vmod http://www.xtremeshack.com/immagine/i80254_13790929.jpg

[Splave]

1627/1325 card all of a sudden wont even pull through 03 at 1175/1100 anymore :X good mount too, kinda sux guess its time for lightning?

[quake6]

Maybe SOC? Elmor put some nice scores

[Phil The Greek]

1627/1325 card all of a sudden wont even pull through 03 at 1175/1100 anymore :X good mount too, kinda sux guess its time for lightning?

Same thing happened to junior-21 card.Last time was running unigine @1490Mhz and now only 1300.Removed the heatspreader and changed the crappy paste but didn't help.
The most strange thing is that it used to have CB at -170 and now it doesn't have any(plays full pot).
I guess you will keep that WR for a little longer

[rbuass]

Hi guys a question...
Does anybody haves issues like a big Vdrop in the middle of benchmark.
System crashes lots and lots of times, and i think is cause a higger vdrop.
For exemple...
Did set 1.52V at 3D mode, but when system in full load (Vantage), voltage was changed and changed (1.45...1.46...1.41...1.45... and all time changing).
All mods done (VID, PLL, RAM, GPU, OCP Overall and Per Phase, CBB and did try 3 BIOS ).
I am almost give up this card...

System crashes green screen, red screen, black screen with only mouse pointer, and many times system crash less than 10 seconds to the end...
Can't go 1300/1200 +
Used ... 1.35 ~ 1.6V GPU (always vdrop)
RAM 1.98V - fixed to 1200 ~1250 is ok
PLL - 1.33V but system works better PLL at stock

If anybody haves some idea to fix this Vdrop issue, a will apreciatte so much....
I saw lots of times...for exemple...system running ok at 1.45V (exemple - full load)...then system crash imediatly when voltage jumped to 1.52V (exemple).

regards and sorry the awful english

[emertX]

How have you been able to give the card more juice than 1.21v???