3080 water cooling performance

[LJAC95]

With it being summer I recently decided to upgrade to a custom water cooling loop from EK, I am using a 360mm radiator with 3 fans at 1500rpm. An EK classic SPF 160 Pump Res at 2300rpm. It is cooling an Aorus 3080 Xtreme and a 9900k all at stock. Under full gaming load the GPU will still hit the mid 60s and CPU will hit 70c. Before I start draining the loop and repasting the blocks are these temps in line with what I should be getting and is it perhaps a case of I had unrealistic expectations? Or is it worth draining the loop and reseating the blocks?

[DoctorNick]

Sounds within expected range with a single 360 rad

[Stahlmann]

Generally the temps are fine. As another reference you can check the temps in my signature. The higher GPU temps for you could be because you have the Aorus extreme with a much higher power limit than my PNY 3080 reference model. Even with watercooling the temps can vary a lot depending on the exact setup.

[Hairless Monkey Boy]

Sounds about right to me.

 

What are your ambient temps?

 

Do you have a temperature sensor in your loop?

 

I'd guess your fluid temp is around 40C+.

[LJAC95]

Thanks for clarifying, ambient is around 18-20 C and idle temps for reference are around 22 on the GPU and 28 on the CPU. Do you think adding a 2nd 360mm Radiator would make a significant difference?

[jaslion]

8 minutes ago, LJAC95 said:

Thanks for clarifying, ambient is around 18-20 C and idle temps for reference are around 22 on the GPU and 28 on the CPU. Do you think adding a 2nd 360mm Radiator would make a significant difference?

Totally depends on your case and where it will go.

 

But I don't really get why you are worrying about temps? The 3080 will boost to it's max as long as it stays under 83c. The 9900k is a hot running cpu and won't stop boosting till it hits 100c.

 

The points of a custom loop are usually:

 

1. Looks

2. Silence

3. Max performance

4. Bragging rights

 

Sounds like you went for number 3 but didn't oc or anything. If you are not planning to do so (don't see a need here anyway). You can aim for nr2 and just lower the fan speed a bit these components are totally fine running a bit hotter.

[DoctorNick]

13 minutes ago, jaslion said:

Totally depends on your case and where it will go.

 

But I don't really get why you are worrying about temps? The 3080 will boost to it's max as long as it stays under 83c. The 9900k is a hot running cpu and won't stop boosting till it hits 100c.

 

The points of a custom loop are usually:

 

1. Looks

2. Silence

3. Max performance

4. Bragging rights

 

Sounds like you went for number 3 but didn't oc or anything. If you are not planning to do so (don't see a need here anyway). You can aim for nr2 and just lower the fan speed a bit these components are totally fine running a bit hotter.

This and this and this!

[LJAC95]

Cheers, I think my problem is this is my first time using a custom loop but was probably expecting lower numbers than were realistic. The last time I watercooled a GPU I was mounting an AIO using a Kraken G12 to my 1080ti and that would only ever hit 50C at the most. But obviously that card drew less power and wasn't sharing the loop with a CPU.

Mainly just want to make sure it's not a case of incorrectly mounting anything.

[Stahlmann]

58 minutes ago, LJAC95 said:

Cheers, I think my problem is this is my first time using a custom loop but was probably expecting lower numbers than were realistic. The last time I watercooled a GPU I was mounting an AIO using a Kraken G12 to my 1080ti and that would only ever hit 50C at the most. But obviously that card drew less power and wasn't sharing the loop with a CPU.

Mainly just want to make sure it's not a case of incorrectly mounting anything.

Nope, don't worry about it. Your temps are reasonable, even for water cooling.

[AnonymousGuy]

You need to tell us what the immediate short term GPU temperature is.  That's the real gauge of whether you have a mounting issue with the block.  Long term temperatures are radiator size dependent which is harder to judge because placement, fans, fan speed, etc.

 

You should ideally be seeing only about a 11-15C delta between your water temperature and your die temperature on full load.   When my card is drawing like 650W in Furmark the delta is about 15C.  60C seems pretty warm unless your water is getting hot to the touch.  However it's also sort of a "known" thing that EK blocks on the 3000 series don't have as good of delta's as other blocks.  Loads of people on OCN being like "what the hell is going on?!"

[LJAC95]

Unfortunately I don't have any sensors to measure the water temperature, I felt on of the tubes though while under load and it felt noticeably warm and so did the reservoir. I probably should have clarified at the start for the GPU I am using a Phanteks Glacier block and the radiator is placed at the front.

[LJAC95]

To clarify also the radiator is an EK slim 360.

[LJAC95]

Just to check when you say immediate short term temperature what does that refer to, like what it reads at as soon as it's under load?

[fonzz1e]

On 6/25/2021 at 5:54 PM, LJAC95 said:

To clarify also the radiator is an EK slim 360.

add another rad, corsair xr5 is decent

get a 280mm or 360mm rad, and your fans won't be at such high rpm

 

my fans only spin up to 800rpm max on 2 rads

[LJAC95]

Weirdly enough I did add a Corsair XR5, except I had to go with a 240mm rather than 280mm due to space restrictions in my case. 

[LJAC95]

On a separate note, is 30 litres per minute good in terms of flow rate?

[fonzz1e]

On 7/6/2021 at 1:56 AM, LJAC95 said:

On a separate note, is 30 litres per minute good in terms of flow rate?

what sensors are u using to measure flow rate?

AFAIK 3.8 LPM / 1 GPM is good enough for the loop

 

if your case can fit it, get a D5

[LJAC95]

So to summarize, I have made the following changes:

I have added and extra 240mm radiator, changed to a EK D5 Pump/Res and in the process of this have repasted the GPU just as precaution.

As far as I can tell it's made no difference to the CPU which still hits the mid to high 60s in gaming loads and the GPU will now hit the mid 50s.

At this point I am tempted to say this is as good as it will get?