Hi,
I recently installed waterblock on 4080 Strix. I followed instructions but made one difference. On memories instead of supplied pads I used Thermal Grizzly Minus pad Advance, however they are same thickness - 1mm. All other pads on the PCB are the one supplied. What I noticed is that TG pads are pretty stiff and maybe not very compressible like the pads supplied with block.
My flowrate was about 100l/h with 25% pwm on VPP Apex pump
Water temperature did not raise over 27C
So the behavior with temperatures I've observed, higher wattage draw makes GPU's core temperature grow exponentially. For example if my GPU pulls 250-300W the temperature is around 58-65c what is slightly worse than Strix air cooled. However once my GPU gets to 350W I was seeing 70-75C (core not hotspot!) what I think is really high. What is interesting is that my memory peaked at around 45C what I think is really cool. Do you think my memory pads could cause issue with die pressure even though they are same thickness? Are here any specific pads you recommend, or should I try order some putty for memories?
I'm dumb I didn't take photo, because I tried to remount the block because I thought something was wrong with paste application or screw pressure but got same result. Couldn't evaluate paste contact on die, however on pads I could see memory chips imprinted on surface really well.
I recently installed waterblock on 4080 Strix. I followed instructions but made one difference. On memories instead of supplied pads I used Thermal Grizzly Minus pad Advance, however they are same thickness - 1mm. All other pads on the PCB are the one supplied. What I noticed is that TG pads are pretty stiff and maybe not very compressible like the pads supplied with block.
My flowrate was about 100l/h with 25% pwm on VPP Apex pump
Water temperature did not raise over 27C
So the behavior with temperatures I've observed, higher wattage draw makes GPU's core temperature grow exponentially. For example if my GPU pulls 250-300W the temperature is around 58-65c what is slightly worse than Strix air cooled. However once my GPU gets to 350W I was seeing 70-75C (core not hotspot!) what I think is really high. What is interesting is that my memory peaked at around 45C what I think is really cool. Do you think my memory pads could cause issue with die pressure even though they are same thickness? Are here any specific pads you recommend, or should I try order some putty for memories?
I'm dumb I didn't take photo, because I tried to remount the block because I thought something was wrong with paste application or screw pressure but got same result. Couldn't evaluate paste contact on die, however on pads I could see memory chips imprinted on surface really well.
Last edited:
not the one that goes through jetplate but the second one that should've been an outlet. Not sure how much that one could affect temps though.. I put PTM7950 and putty, hopefully the contact will be good this time
used PTM7950 with putty on memories/vrm, reassembled the loop with correct in/out orientation and the magic happened, during the same benchmark (Timespy Graphics test 2) now I hover around 55c max, while before I was peaking at low/mid 70's under same benchmark.. GPU has no problem sustaining 350W now, I tried to run Furmark, that one pulled around 420W (thats the strix power limit) and temps stayed in high 50's, that's crazy wattage for 4080, so I assume I have very good cooler contact now, hotspot delta is around 10c too, thanks!
