GPU Chip->Water delta

[esbentoke]

Its my first time watercooling, so just wanted the advice of someone more experienced. This is my system:

• Ryzen 5 2600x with EK Supremacy Evo block (not OC'ed)
• Strix 2060 OC with Bitspower Brizo full cover block (OC'ed sustaining 2070MHz under full load, no voltage increase)
• EK Coolstream PE360 with three Vardar fans in push
• EK D5 pump/res combo.
• Loop order: Res -> Pump -> Rad -> CPU -> GPU

I measure water temperature after the radiator with an inline temp sensor fitting.

 

I know, i know: "Why would You watercool a 2060... etc etc". Because I thoroughly enjoy it and because i like a silent computer.

 

Anyways... The GPU block is the latest addition. And while my chip temperatures are great compared with the aircooler, i'm afraid the block might not be mounted as well as it could be. Several places I can read that the delta between the GPU and the water should really be less than 10C, and for a decent block probably more like 5C. And given that this is for higher powered GPUs than my measly 2060 I would expect my delta to be probably more like the latter. But I am typically seeing my GPU temperature at around 50C with a water temperature of 36C or so under load.

 

My question is this: My temps are just fine for all practical purposes, but it annoys me to know that I might be missing out on 5-10C lower temps. Are the 5C deltas I read about online just bragging or is this really what i SHOULD be seeing? I don't want to reseat the block for no reason.

[Constantin]

2060 with an  2070MHz wont get you very far if you do not increase the core voltage.

I spend hours testing that! 

[Jurrunio]

21 minutes ago, esbentoke said:

Several places I can read that the delta between the GPU and the water should really be less than 10C, and for a decent block probably more like 5C. And given that this is for higher powered GPUs than my measly 2060 I would expect my delta to be probably more like the latter. But I am typically seeing my GPU temperature at around 50C with a water temperature of 36C or so under load. 

For larger node GPUs? Because smaller nodes are almost always more thermally dense, giving a larger temperature delta.

 

10 minutes ago, Constantin said:

2060 with an  2070MHz wont get you very far if you do not increase the core voltage.

I spend hours testing that! 

It's not like dragging the voltage slider does anything to the max core voltage on Nvidia's sub 20nm cards

[esbentoke]

12 minutes ago, Constantin said:

2060 with an  2070MHz wont get you very far if you do not increase the core voltage.

I spend hours testing that! 

It runs completely stable like that. I have gamed for hours and hours in multiple games without any crashes. Memory is running at +900MHz. Every chip is different, so my results won't be like yours.

[Constantin]

1 hour ago, esbentoke said:

It runs completely stable like that. I have gamed for hours and hours in multiple games without any crashes. Memory is running at +900MHz. Every chip is different, so my results won't be like yours.

I didnt say it would not be stable, just not the full potential of the card could reach!

Have a look

https://www.msi.com/blog/get-a-free-performance-boost-with-afterburner-oc-scanner

 

[Madgemade]

14 minutes ago, Jurrunio said:

Because smaller nodes are almost always more thermally dense, giving a larger temperature delta.

Seems like the most likely cause to me. The Radeon VII is nothing like 10C over water, it's more like 20C minimum so 15C sounds about right for a 2060.

 

For the big old GPUs I expect this 10C rule holds true for the most part. I have an old GTX Titan Black in a loop and at stock it gets to 29C or 30C with ambient temps of 18-20C, overclocked (300W-350W gpu core power) it got to 33C. Watercooling doesn't work as well (delta temps wise) with newer GPUs as they are too small now!

[Ttnuagmada]

I get about an 8-10c delta on my 1080ti's, but I used Conductonaut. 14C is not unrealistic. I don't think there's anybody out there getting a 5C delta.

[LmnSour]

360 for CPU and GPU is a little light.  Not terrible but rule of thumb is 120mm per GPU and 240mm per CPU is minimum.  Some even go as far as recommend a 240mm Radiator per GPU/CPU.  If you can fit another radiator, you can gain a small drop in temps but the rule of diminishing returns in watercooling is always an issue. 

 

Push/pull fans on your 360 will also help if you can't fit another radiator but then you start running into noise issues.

 

In my effort to get the maximum cooling with a near silent PC I'm running a 360mm, 240mm, 120mm and 280mm radiator for a 5GHz 8700k and 1080ti.  GPU temps stay about 10-15*C over ambient and CPU peaks about 30*C over ambient.  If I turn up the fans, I can drop that by about 5* on the GPU and almost 10* on the CPU.

[esbentoke]

Thanks for the answers. That put me at ease. I hadn't even thought about the die size! If Ttnuagmada gets 8-10 with liquid metal and a slightly larger die i feel better about my 14C delta :)

 

Thanks for the help!

[Quadriplegic]

9 minutes ago, LmnSour said:

360 for CPU and GPU is a little light.  Not terrible but rule of thumb is 120mm per GPU and 240mm per CPU is minimum.  Some even go as far as recommend a 240mm Radiator per GPU/CPU.  If you can fit another radiator, you can gain a small drop in temps but the rule of diminishing returns in watercooling is always an issue. 

 

Push/pull fans on your 360 will also help if you can't fit another radiator but then you start running into noise issues.

 

In my effort to get the maximum cooling with a near silent PC I'm running a 360mm, 240mm, 120mm and 280mm radiator for a 5GHz 8700k and 1080ti.  GPU temps stay about 10-15*C over ambient and CPU peaks about 30*C over ambient.  If I turn up the fans, I can drop that by about 5* on the GPU and almost 10* on the CPU.

Thumb of rule is 120 per component. Especially considering he is using low power CPU at stock settings and moderately power hungry GPU.
Still, I'd say that rule is pretty much dead.

[LmnSour]

It depends on what you are trying to do I guess but I can pretty much assure you that a high end air cooler is better than a 120mm radiator for the CPU (and cheaper).  I wouldnt recommend anything less than a 240 for the CPU.  And no AIO's.

[esbentoke]

I want another rad at some point. But no room in current case. Probably getting the O11 dynamic soon which will have plenty of room. But not in a rush. When gaming, CPU is sitting at around 60-65 and GPU around 50-55 so it is absolutely fine. The system is not as silent as I want it to be, but it is SO much quieter than it was with air cooling