Getting a little too toasty for my liking

[agnes]

@agnes my 2080ti actually clocked higher with a lower power setting and less heat out put not having had the chance to try the 3000 series yet ( in the evga step up Que for 3090) do they do the same thing or are they just different beast regardless of power settings?

The bigger rad should make a big difference to your temps and can be used with low speed fans.

all this has got me thinking I might add a slim to my side so making it whisper quite but will have to use motherboard stand offs because of the front distro plate.

https://ibb.co/D8D56LP

Yea, my 2080 ti was the same. I'm not seeing the same with this GPU thus far. Once I get the new rad in place, I'll dive back into OC'ing it, no point going through the trees now with the higher temps.

I've actually gone to default clocks and power target etc.

Additionally, I read a review earlier regarding the XE, I agree, I think I'm going to see a big difference with it. I'll also switch over the rear fan as with push/pull I'll not need the additional intake for positive pressure.

 

[Disco_P]

Just to clarify, how much power is your 3090 actually using? I have found that the efficiency of the 30 series cards drops off like a cliff at higher power settings. You can be pushing 50% more power for about 10% more performance.

These temps are way higher than what I'd expect from your setup.

For reference I use a 4.3Ghz 5820K (~120W), 2Ghz 3080 (350W) on a push pull 360mm + push 240mm rad in a H440 which is an actual oven case and never seen the GPU exceed 50C using Silverstone FQ121 fans at <1000rpm.

 

[agnes]

Just to clarify, how much power is your 3090 actually using? I have found that the efficiency of the 30 series cards drops off like a cliff at higher power settings. You can be pushing 50% more power for about 10% more performance.

These temps are way higher than what I'd expect from your setup.

For reference I use a 4.3Ghz 5820K (~120W), 2Ghz 3080 (350W) on a push pull 360mm + push 240mm rad in a H440 which is an actual oven case and never seen the GPU exceed 50C using Silverstone FQ121 fans at <1000rpm.

From a real quick Furmark with my normal OC, within 30 seconds it peaked at 480w.

 

[D1craig]

I definitely think thicker rads are the way to go. You might not need to change anything else even adding the 3 extra fans for push pull might be unnecessary.

Is push pull even worth anything? I'm sure I watched a video that showed it only reduced temps by like 2 to 3 degrees.

 

[agnes]

I definitely think thicker rads are the way to go. You might not need to change anything else even adding the 3 extra fans for push pull might be unnecessary.

Is push pull even worth anything? I'm sure I watched a video that showed it only reduced temps by like 2 to 3 degrees.

According to https://www.xtremerigs.net/2015/05/31/ek-coolstream-xe-360mm-radiator-review/, it can make a difference. However, I'm hoping to increase air flow with push pull. At the moment, I'm leaning on the bottom radiator to do too much cooling as it's warm air going through the top radiator. So, with the bottom doing all the leg work once I install the XE, the push pull will just aid the top radiator even further with as much clean air as possible.

And honestly, it was naïve of me to think 2x PE 360's would be sufficient with 6x fans for cooling. I don't think 3 additional fans for push pull will hurt.

 

[MikeTimbers]

I haven't yet seen any details of the loop order. I'm guessing that the top radiator is getting the hottest fluid? Putting more airflow on the hotter radiator will achieve the maximum cooling.

 

[Jay85]

This is exactly why i added more radiators to my system. With 1 single 360 rad my 3090 would hit around 48-51c depending on the thickness of the rad and would need rather fast fan speeds (80%) to keep it at those temps. Albeit i have the gpu and gpu in separate loops so i can isolate them. The water temps for the gpu loop never hit above 31c though now and im running 1080 in radiator space.

GPU temps sit around 38-41c at gaming loads with this configuration with room temp of 21c and fan speeds of around 1000rpm which is really quiet using Arctic cooling P12's. Idle temps are near room temp with 3-4c delta.

 

[agnes]

I haven't yet seen any details of the loop order. I'm guessing that the top radiator is getting the hottest fluid? Putting more airflow on the hotter radiator will achieve the maximum cooling.

Correct, I posted the loop order above. Sadly, the top rad can only fit a PE 360 and 3x fans.

This is exactly why i added more radiators to my system. With 1 single 360 rad my 3090 would hit around 48-51c depending on the thickness of the rad and would need rather fast fan speeds (80%) to keep it at those temps. Albeit i have the gpu and gpu in separate loops so i can isolate them. The water temps for the gpu loop never hit above 31c though now and im running 1080 in radiator space.

GPU temps sit around 38-41c at gaming loads with this configuration with room temp of 21c and fan speeds of around 1000rpm which is really quiet using Arctic cooling P12's. Idle temps are near room temp with 3-4c delta.

Welp, I got my first order today, 3 Noctua NF-A12x25 fans, I've thrown them on top of the bottom radiator for push pull and noticed several celcius cooler. Now I just need to wait for the XE radiator to come. And if thats STILL not enough, I'll repurpose the spare PE as a 3rd radiator and get a new tube res to mount on the front of it.

Also, when I fit the XE rad, I'm going to reapply the GPU block, just to be 100% sure it's good in terms of thermal compound.

 

[Jay85]

Correct, I posted the loop order above. Sadly, the top rad can only fit a PE 360 and 3x fans.



Welp, I got my first order today, 3 Noctua NF-A12x25 fans, I've thrown them on top of the bottom radiator for push pull and noticed several celcius cooler. Now I just need to wait for the XE radiator to come. And if thats STILL not enough, I'll repurpose the spare PE as a 3rd radiator and get a new tube res to mount on the front of it.

Also, when I fit the XE rad, I'm going to reapply the GPU block, just to be 100% sure it's good in terms of thermal compound.

I ended up doing 2 x 360 external and 1 x 360 internal rads on QD's to give me those temps though tbh 2 x 360 thick rads would have been enough to give me those low temps. The extra 360 only gave me an additional 3-4c drop.

My external rads are running push/pull where as my internal is running Pull only.

 

[agnes]

Welp, XE 360 in place where the bottom PE 360 was, in push pull and adjusted the fan curves slightly.

Getting a little better temps, need to have a longer gaming session. But I think seeing how much space there is, it can't hurt to use the spare PE 360 as a third rad... Might be a bit overkill.

 

[Drumroll]

I would.go with 3 rads. In fact will start puttig together my custom loop tomorrow. Kind of struggling to keep on air after using water for some time. O11 XL, XE bottom, PE side and top. Top and rear exhaust, bottom and side intake.
Using the same order, as mentioned before, just would like to make clear that I may have failed explaining better what I meant by loop order.
A radiator between blocks, or which block comes before, irrelevant.
What I meant is the radiator order. The one getting the hottest coolant, exhaust, so the warmer air is expelled away from the case and other components and radiators. The second radiator, in my case, the side one, even if the coolant is slightly warmer than ideally, the worst has been handled by the top rad.
The slightly warmer air from the side intake may affect the top radiator, but then the bottom radiator, as intake, would reduce the coolant temperature as low as your loop can, and the blocks will get coolant as cool as possible with your loop.
Before the air, with the XL, which in going back to now, ice tried every imaginable setup, believe me.
Using the same radiator and fab setup, but going from side radiator, tip radiator, blocks, bottom radiator to pump, the hottest radiator, the bottom one, was dumping all the heat inside the case and crippling the cooling capacity of the top radiator.
Push/pull I've tried before, but now, even with the XE, I'm going just pull.
Push/pull may help if your fans are struggling with a thick and very restrictive radiator. But at slower rpm, at least my perception was that 2 fans at 40% were louder than 1 fan at 45-50%.

 

[cammmy]

If you have air coming in the bottom rad and going out the top rad. Try flipping the top rad to a pull config and see what happens. It's a quick test and it might be that both having access to fresh air outweighs any negatives. Air is pretty crap at absorbing heat compared to water, so preheating it with one rad and sending it through another could be fairly detrimental, especially if that first rad as restricted by the surface under the case. I know Linus (I think) did a video on this but you may as well see for yourself. It's easy to flip a few fans and re-test

I run a 5600x and 3090 with a 280mm and 120mm (60mm thick), both pulling air externally. I see about 45 degrees on the GPU with a reasonable fan curve.

 

[Drumroll]

Just an update, yesterday was unable to install the CPU block (faulty, created a thread about it). Just the 3090, 2 x PE, 1 x XE. 4 hours hammering with heaven bench. GPU never went over 45C. Coolant stayed at 32-35C. Slightly OC on the card, just for tests. Ambient temperature about 23C.
I don't expect my 3900x to add much heat to the loop.
At the moment, fans (Pure Wings 2) at 40%,900ish rpm.
One thing I noticed is that vertical mounting, the NVME, M.2 and Chipset suffer a with the heat from the backplate, that is not as hot as the original backplate, but still hot.
Memory Junction maxed out at 72C.

I tried to keep the same as before, top rad just after blocks, exhausting, them side and bottom intake, pump/reservoir between them. The air exhausted from the top rad is hot. I wouldn't want that inside the case. But seems like the PE at the top is hold it's ground. The air from the second PE on the side, isn't much warmer than ambient. The bottom XE only brings coolant temperature closer to ambient, but more importantly, side and bottom rad don't exhaust significantly hot air inside the case.