Originally Posted by B NEGATIVE
Flow rate is not massively important,1 GPM is a solid figure to go for,easily achievable and most blocks are designed around that figure.
Pumps dont get changed until they die.
I know in the past (post '10s) flow rate was more important with the massively wide channels in blocks.
It's not that the pump shows signs of dying... no excessive noise (bearing) or anything.
More like I have no clue on how the flow rate is. I can't see it.
Then again. I will find out soon enough when my temps skyrocket.
Originally Posted by Nichismo
I have always believed that the OEM watercooling pumps (specifically the DDC and D5 variations) have always been "overkill" for typical loops, however thats obviously all relative.
That being said, I really have a hard time picturing a pump failing out of pure longevity. Now I dont necessarily want to encourage you to simply wait until your pump randomly stops working.... but then again, if you aren't really keen on the idea of buying a new pump and doing the work to replace it, id say wait.
As far as flow goes, refer to my first statement. I personally believe pressure is more important, but only by a little. They obviously have close relativity in regards to how they effect one another.
I hate the term "overkill." Hate using it even more.
I don't really see the word like others do, I guess. To me overkill is enough. I like a little extra... because I can.
What do you mean on your first sentence? Regarding OEM pumps.
Why wouldn't a pump die from longevity, what do you think it would die from then? It's not like I would drop it while using.
I guess first and foremost reason are worn out bearings. Making it spin slim to zero.
I posted this because I have parts laying in the house waiting for me to redo the build (new case, rigid tubing + fittings, extra rad).
That's why I thought about: how long will it last?
If I do the build now with the intended layout in mind and then have to change the pump (thinking on getting the mcp50x) because of failure, that would force me to sell the d5 x-res top/combo and buy new tubing (and re-bend), the pump and a reservoir.Comparison:
Looking at 1GPM (3.875 LPM) the D5 achieves around 3.2 mH2O (4.3-4.4 psi) and the 50x above 4.5 mH2O (6.4 psi).
Calculations for my loop came out at ~2.94 psi (~2.2 mH2O) @ 1GPM. Showing the D5 reaches that around setting 4 while the 50x only has to spin around 45-50%.
Normally DDC pumps are louder but with the 50x around 50% I think it should be quieter than the D5.Edited by Chopper1591 - 7/23/16 at 4:44am