Pump Speed Corsair Hydro H150i Pro

[acid1011]

I recently got myself a Corasair h150i Pro RGB. Installing the Corsair Link software i saw that there are 3 options for Pump speed. Quite, Balanced, Performance.
I'm running an overclocked i7 8700k @4.8 GHz.
I currently have the pump speed at Balanced (2100 rpm)
Will bumping it up to Performance (2800rpm) have any meaningful impact on thermals?
p.s: noise is not an issue.

[Fasauceome]

Increasing the RPM will make the CPU run cooler, probably. You might as well just do it and find out though, should be simple enough to experiment with.

[acid1011]

i forgot to add if running high performance will cut life span short significantly

[Mick Naughty]

Doubt you will gain anything by running the pump faster. Unless it has a real slow flow rate to begin with.  

 

I dont kno w who supplied the pumps for that series but you can hope for a few years out of it assuming the cooleris sufficient for the cpu.  

[AngryBeaver]

On 11/15/2018 at 11:46 AM, fasauceome said:

Increasing the RPM will make the CPU run cooler, probably. You might as well just do it and find out though, should be simple enough to experiment with.

This isn't exactly true. Unless the flow rate is really slow it doesn't make a huge difference. Cause even if the water is moving faster it still spends the same total time in block and radiator over a period of time. Faster flow means it is in the rad/block for less time each pass, but makes more passes. If slower then it is in them longer, but makes less passes.

 

The exception to this is when the water is slow enough it isn't carring the heat away faster than it is being added.. so this raises the temp of the components.

So to sum it all up

The improvement you see with higher pump flow is due to increased turbulence within the blocks and rads which improves heat transfer between them. The speed range for most pumps in most loops shouldn't be enough for there to ever be significant temperature deltas within the loop, The problem with having too little flow is something called laminar flow, which creates a boundary layer between the surface and fluid which inhibits the transfer of thermal energy.

[ewitte]

I aim for just a bit over 1gpm.  The estimate on loop configurator puts me at 1.5gpm at full speed I reduced the rpm on the pump 20% (90% PWM drops the pump 20%) which should be at least 1.2gpm.  Gave it a bit extra just to be sure.