110°C junction temps on rx 5700xt after watercooling.. please help!

[Josh1551]

I just recently installed a custom loop in my system (Ek a240 and Ek rx 5700 xt waterblock) and after stress testing just my gpu in furmark im getting junction temps that are at 110 °C, the weird part, however, is that my edge temps are at around 55 °C. I tried reseating the waterblock but to no avail (tightened screws opposite from each other by half a turn until about a quarter turn past snug). in benchmarks like superposition and heaven in getting junction temps at about 92 °C. I honestly don't know what to do at this point seeing as I remounted the waterblock, and yes when I took off the waterblock the first time, thermal paste was covering the whole die, and then I made sure there was a thin layer of paste the second time. my case is the phanteks p400a, i have 3 fans in the front of the case and then 2 in the back, and the front panel was off for these tests.

[Damascus]

This may be a strange question  but is your pump plugged in?

[Ebony Falcon]

Does your loop flow the right way through the card ? 
I know cpus it tends not to matter but I think gpus have to flow in certain direction 

 

[Damascus]

Just now, Ebony Falcon said:

Does your loop flow the right way through the card ? 
I know cpus it tends not to matter but I think gpus have to flow in certain direction 

 

About a 0-2.5-5c difference depending on the block 

[Zando_]

9 minutes ago, Damascus said:

This may be a strange question  but is your pump plugged in?

^^^ This. 
 

Also, what voltage are you running? And is the 240mm rad for just the GPU or both GPU and CPU? 

110C hotspot temps should be normal for air, on water that’s fishy unless you’re running really high voltages. AFAIK the Navi hotspots are similar to Vega ones in their temp behavior, meaning up to 110C is safe, anything past there and it starts throttling hard. On water you shouldn’t be seeing over 90C on the hotspot unless you’re running max voltages. 
 

Just now, Ebony Falcon said:

Does your loop flow the right way through the card ? 
I know cpus it tends not to matter but I think gpus have to flow in certain direction 

 

Opposite AFAIK, but does depend on block. Normally the CPU blocks need a specific directional flow, GPUs blocks often don’t care. 

[Ebony Falcon]

42 minutes ago, Zando Bob said:

^^^ This. 
 

Also, what voltage are you running? And is the 240mm rad for just the GPU or both GPU and CPU? 

110C hotspot temps should be normal for air, on water that’s fishy unless you’re running really high voltages. AFAIK the Navi hotspots are similar to Vega ones in their temp behavior, meaning up to 110C is safe, anything past there and it starts throttling hard. On water you shouldn’t be seeing over 90C on the hotspot unless you’re running max voltages. 
 

Opposite AFAIK, but does depend on block. Normally the CPU blocks need a specific directional flow, GPUs blocks often don’t care. 

A ok thanks for clarification

[Josh1551]

 I’m pretty sure I have the gpu in the right direction even if it doesn’t matter, I have it going in where it flows on both sides for the fins and the the out on the part the goes to the middle of the fins

[Josh1551]

1 hour ago, Zando Bob said:

^^^ This. 
 

Also, what voltage are you running? And is the 240mm rad for just the GPU or both GPU and CPU? 

110C hotspot temps should be normal for air, on water that’s fishy unless you’re running really high voltages. AFAIK the Navi hotspots are similar to Vega ones in their temp behavior, meaning up to 110C is safe, anything past there and it starts throttling hard. On water you shouldn’t be seeing over 90C on the hotspot unless you’re running max voltages. 
 

Opposite AFAIK, but does depend on block. Normally the CPU blocks need a specific directional flow, GPUs blocks often don’t care. 

The minimum pwm percent my pump runs at is 50 at a cpu temp of 40. I have the card running at stock voltages and frequencies, but even on my reference cooler I wasn’t getting temps this high for the junction temp. I do have a 240mm rad for both the cpu and gpu but in these tests I’m only stressing the gpu, not the cpu, so I doubt the 240mm rad is the problem

[Zando_]

26 minutes ago, Josh1551 said:

The minimum pwm percent my pump runs at is 50 at a cpu temp of 40. I have the card running at stock voltages and frequencies, but even on my reference cooler I wasn’t getting temps this high for the junction temp. I do have a 240mm rad for both the cpu and gpu but in these tests I’m only stressing the gpu, not the cpu, so I doubt the 240mm rad is the problem

What CPU are you running? Also any reason to run the pump at a lower rpm? If you have a D5 pump they're built to run silent at 100% speed, if you have a DDC then mebbe look at turning that up a bit. 

[Josh1551]

25 minutes ago, Zando Bob said:

What CPU are you running? Also any reason to run the pump at a lower rpm? If you have a D5 pump they're built to run silent at 100% speed, if you have a DDC then mebbe look at turning that up a bit. 

i have a ryzen 5 3600 overclocked to 4.2 ghz at 1.35v. i had heard that the pump speed doesn't really matter but i guess i could try setting it to 100. Also, i do actually have the flow backwards but after looking it up it looks like it only had a few degrees difference, not 20 or 30.

[BTGbullseye]

6 minutes ago, Josh1551 said:

i have a ryzen 5 3600 overclocked to 4.2 ghz at 1.35v.

That's a stock air cooler level of heat dissipation requirement. Shouldn't affect much at all on the GPU end. (however you may end up running the CPU a little warm if it's after the GPU in the loop)

[Josh1551]

1 minute ago, BTGbullseye said:

That's a stock air cooler level of heat dissipation requirement. Shouldn't affect much at all on the GPU end. (however you may end up running the CPU a little warm if it's after the GPU in the loop)

nah its first, gpu is second. cpu only gets to 63

[BTGbullseye]

5 minutes ago, Josh1551 said:

nah its first, gpu is second. cpu only gets to 63

Ok, good. That's about what I get for mine at the same clocks and voltage with a GAMMAXX 400. (air cooler)

[RadiatingLight]

1 hour ago, BTGbullseye said:

(however you may end up running the CPU a little warm if it's after the GPU in the loop)

AFAIK this is proven to be false. The water temperature matters most, which is determined by the amount of radiators you have.

 

"The tests don't really lie: the order of the components, like I've been saying all along, make absolutely no difference to the temperature" -JayzTwoCents

 

[Josh1551]

Ok, well I broke down and took apart my loop and reseated the waterblock on my card and "fixed" the flow direction through the block and now my temps are better. in furmark my junction temp gets to 90-91°C and in superposition and heaven my temps get to about 80°C. Thanks for all the help!

[BTGbullseye]

2 hours ago, RadiatingLight said:

AFAIK this is proven to be false. The water temperature matters most, which is determined by the amount of radiators you have.

 

"The tests don't really lie: the order of the components, like I've been saying all along, make absolutely no difference to the temperature" -JayzTwoCents

 

*frantically searches for a technicality* Well... Considering that "a little" is about 5% at most, that's only a 3° difference, and well within the margin of error...