Quote:
Originally Posted by Deanzo
Jody, of the 8 - 10 260's I've gone cold on, none have been happy with both high gpu and mem at the same time.
ie: same card will do 1022/1191 or 850/1300
Another thing I've found, the mem can bug with the cold, the gpu may well do -100, but the mem may not like -20, it will make the screen look all funny like you posted.
I have well tested this with even stock clocks. But not all of them do this, or it kicks in at another temp.
Only use the temp you have to for X gpu speed, you may well have better luck getting a bit more out of the mem.
And don't let it sit idle for long.
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the memory on this card won't run over 1152 on air, so when i went cold i just left it there as i wanted to get a decent score that i thought could win. tonight i will go for a little bit more on memory and see how it does with low temps.
the screen going all funny has nothing to do with memory, i am pretty sure of that. like i said, memory was set to 1152 the whole 6 hours or so i was cold, the screen only pucked when going over 1.25v and as soon as load was applied...definitely OCP/OVP or whatever you want to call it. 100% repeatable, no exceptions. i have done the OCP mod for this card and had it tuned to 25K but will go lower tonight now that i have read wires so i can monitor it and see what it does.
i will definitely keep the temps in mind though when trying to push memory...find out what i need for the core/shader at 1080/2160 and stay there instead of going any colder...but i think i needed -130C for 1080/2160 @ 1.25v thinking back. i normally bench as warm as i can but once i worked my way down to -100C on the card and it was still fine, i got curious as to how cold it could bench. Vince has always said the Tek9 slims hold load extremely well once they are loaded up, and i can atest to that now. i could hold temps within a couple degrees at -140C right through Nature with that big load...such good little pots. thanks for the info, you are the 260 master
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sounds juicy >_<
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