High Temps Custom Loop

[TomH]

Hi,

 

I just built my first full custom loop and am getting very high temps. It’s an SFF build so I expected temps to be higher than a regular loop, but I am getting 90C on my GPU when running heaven (60 on the CPU) with the pump and fans on full. The water temperature is about 40C. Is my pump just not strong enough? I saw Optimum Tech use a smaller pump in a faster system with a full loop so I thought it would be fine.

 

I tried running it upside down etc to let any bubbles go into the radiator and not the blocks but it didn’t change.

 

My specs are:

 

CPU: Ryzen 5 3600

GPU: RTX 3070 TUF

CPU block/pump: Alphacool Eisbar LT solo

GPU block: EK Quantum Vector

 

I am using EK coolant with a 240 Alphacool rad.

 

Any advice greatly appreciated. 

[PDifolco]

The 240 rad is for the whole system CPU+GPU ? 

Too small to cool the 300W power needed imo, I had both 280+360 to cool 400W (5900X + 3080), that's like 3 times more surface and airflow and temps were good...

 

[Alinz]

Check if the waterblock on the 3070 makes contact with the GPU die. Could be that you have used a slightly too thick thermalpad somewhere.

[TomH]

26 minutes ago, PDifolco said:

The 240 rad is for the whole system CPU+GPU ? 

Too small to cool the 300W power needed imo, I had both 280+360 to cool 400W (5900X + 3080), that's like 3 times more surface and airflow and temps were good...

 

Might need to invest in a bigger case then

 

Thank you

[TomH]

20 minutes ago, Alinz said:

Check if the waterblock on the 3070 makes contact with the GPU die. Could be that you have used a slightly too thick thermalpad somewhere.

I’ll check this, but I’m also getting almost 100C on the CPU on start up so there’s definitely something else (possibly as well)

[NeverNotExhausted]

Yeah, 240mm for that kind of load is optimistic at best. You could maybe try put some Noctua 3000rpm fans on it if you don't mind the added noise. But you're kind of pushing shit uphill trying to cool all that with a 240mm rad.

 

Maybe also look at running an undervolt on the CPU/GPU and see if that helps?

[Somerandomtechyboi]

Why not just leave the stock cooler on the gpu? Temps wont be trash on the gpu and the cpu will be cooled pretty well when there isnt a crapton of extra gou heat in the loop

[TomH]

8 minutes ago, NeverNotExhausted said:

Yeah, 240mm for that kind of load is optimistic at best. You could maybe try put some Noctua 3000rpm fans on it if you don't mind the added noise. But you're kind of pushing shit uphill trying to cool all that with a 240mm rad.

 

Maybe also look at running an undervolt on the CPU/GPU and see if that helps?

Already got Noctuas but will try an undervolt. Thanks

[TomH]

5 minutes ago, Somerandomtechyboi said:

Why not just leave the stock cooler on the gpu? Temps wont be trash on the gpu and the cpu will be cooled pretty well when there isnt a crapton of extra gou heat in the loop

That’s what I had before. I did it purely for the looks to be honest haha

[PDifolco]

41 minutes ago, TomH said:

Might need to invest in a bigger case then

 

Thank you

Or only keep the CPU on watercooling and put the GPU back to aircooling 

This will make the rad good enough for the task and SFF cases are usually mesh allowing the GPU to breathe 

[TomH]

Update: I just double checked and the pump has died on the LT Solo which might explain a lot of the issue.

 

Unfortunately it’s JUST out of warranty. Anyone know if Alphacool happen to be lenient?