does faster pump speed mean cooler temps

bigjimmyauk

bigjimmyauk

bigjimmyauk

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i can't get my head around it

slower pump speed should mean the water spends more time in the rad so it cools more, but my other side of my brain is saying faster pump speed equals more cycles per minute.


someone enlighten me please
 
If the pump is going too slow then the warm water inst being cooled down quick enough leading to higher temps, once your loop is over 0.8GPM you're very unlikely to see a change in temps if you go any higher.
 
Flow rate makes next to no difference (~1C) as long as the flow rate is over something like 1gpm. There is always water in the radiator being cooled is about the simplest way to put it.
 
mjones1 said:
If the pump is going too slow then the warm water inst being cooled down quick enough leading to higher temps, once your loop is over 0.8GPM you're very unlikely to see a change in temps if you go any higher.
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i have my d5 vario set on speed 4 what does that equate too?
 
Jokester said:
Depends on how restrictive your loop is, a good way to test is to run something like OCCT at different pump settings and see what peak temperatures you get.
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i'm testing something similar later metro 2033 bench hammers both my cpu and gpu

on setting 4 it peaked at 40 gpu and 43 cpu that was 30 consecutive runs in a loop.

i might start at setting 1 and work to 5 and see what happens, would you recommend fastest fan speeds for this sort of testing ???
 
Yeah, I would make everything else consistent so you know it's the pump speed that's affecting temperatures rather than anything else. Even room temperature changes will have an effect.
 
Jokester said:
Yeah, I would make everything else consistent so you know it's the pump speed that's affecting temperatures rather than anything else. Even room temperature changes will have an effect.
Click to expand...

so if i do 10-15 loops note temps etc etc adjust pump and wait 2 minutes for everything to settle then do another 10-15 on setting 2, rinse and repeat etc ect
 
bigjimmyauk said:
so if i do 10-15 loops note temps etc etc adjust pump and wait 2 minutes for everything to settle then do another 10-15 on setting 2, rinse and repeat etc ect
Click to expand...
To be honest, just do it on 1, then 5 and see just how big a difference there is between the two. Probably won't be much.
 
ALL RAD FANS AT 600RPM
AMBIENT IS 19.5c

speed setting 1
CPU IDLE 31
CPU MAX 40

GPU IDLE 31
GPU MAX 38

speed setting 5
CPU IDLE 31
CPU MAX 40

GPU IDLE 31
GPU MAX 38

Results are the same for both speeds wth the cpu at 3.8Ghz and GPU at stock

now for some fun

speed setting 1
CPU IDLE 31
CPU MAX 40

GPU IDLE 31
GPU MAX 42 @ 1.1Ghz core and 1500Mhz [email protected] volts


speed setting 5
CPU IDLE 31
CPU MAX 40

GPU IDLE 31
GPU MAX 42 @ 1.1Ghz core and 1500Mhz [email protected] volts

So basically the speed setting on my D5 vario makes bob all difference now if i repeat the last test using the full 1300RPM of my fans i can get the GPU temp down to 38 and the CPU to 38

What all the above data means, i have no idea lol
 
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