[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.

[3oh6]

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.

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

[Vivi]

i love your 260 knowlege deanzo !

this comp makes me sad :(.

11 hours..

[Mean Machine]

Originally Posted by Vivi

this comp makes me sad :(.

Me too. I spent the last 13 hours trying to squeeze out one decent run out of a GX2, but all I managed was a 92.5k, and on that there's no screen. I couldn't even get 960MHz 6-5-5-15 working for some odd reason, nothing worked like it did once.

[Vivi]

jody i want some pics of that setup sounds juicy >_<

[3oh6]

Originally Posted by Vivi

jody i want some pics of that setup sounds juicy >_<

missed em by a page

http://www.overclockaholics.com/foru...&postcount=730

here is one more from last night...ice started encapsulating the NB heat sink, that thing is too damn big.

[Kal-EL]

By all means buddy, I lub the frostys and pronware shots

[punx223]

damn jody!!! quick question on the rear of the GPU where the blue shop towel is at? what is under the blue shop towel?? vaseline?

[3oh6]

Originally Posted by punx223

damn jody!!! quick question on the rear of the GPU where the blue shop towel is at? what is under the blue shop towel?? vaseline?

not a spot of vaseline on the board or the GPU...i hate that shyt. kneaded rubber eraser all around. you can see in the one photo that i use eraser on the board, then once i mount the card, i simply connect the board's eraser to the cards...all around the slot. completely air tight, completely sealed, and never get condensation anywhere except on the out side of the eraser. which is why i put shop towels around everything, then the frost just forms on the towels and not even on the eraser.

here is a shot of the front of the card without the towels...



and a shot of the back without towels...



i will basically stick this back in the slot, re form the complete seal of eraser around the PCI-E socket, then wrap the setup in a shop towel or two like in the previous photos and it is ready to go. 6 hours as cold as -140C last night an is easy as pie to remove (just 'rip' it out of the socket), and just as easy to re-insulate after drying off.

Originally Posted by Kal-EL

oh6, whats the specs on the phase machine? SS-Cascade-temps-maker?

old Chilly1 SS tuned for E6600
never goes below -40C on the evap with an i7 and usually around -30C ~ -35C for all the work in the 01 challenge. definitely needs to be 'upgraded' for i7 but it does it's job of keep the CPU cold so i can run high uncore for memory testing.

Originally Posted by Deanzo

Don't get me wrong, I'm sure you are hitting ocp/ovp as well, I get the same thing myself.
But have also found on some cards, you can get the same kind of looking screen with the mem to cold.

I almost never run them under -60 or soo, but have done -120, but that just makes other issues.

The Teks are a pice of art, if you are using a 5.0, wait till you try the older 3.0, it's even better at holding a load.

Oh man, 1152 on air, that sucks, never had one that bad before.

cool, will keep that in mind for moving up memory clocks, definitely no issues at 1152 with the pot at -120C ~ -140C though, so hopefully that is a good thing. maybe they just clock like crap at ambient but will be a bit better with some cold...fingers crossed.

[dinos22]

you are playing with fire
you should at least use vaseline on the gold contacts and the slot