Do I need a better pump?

diogenese

diogenese

diogenese

Soldato
Joined
18 Oct 2002
Posts
3,023
Location
Temuka, New Zealand
I have a water cooling setup that has evolved over the last few years, but I have gust upgraded to an 8800 GTS with an Alphacool NVXP-G8 and I don't seem to have much flow now.
The rest of the setup is in order of connection is Black Zalman reserator V2 with no pump, Maxijet 1200 pump in it's own tank, 120mm rad with akasa amber fan on the rear of tha case, Swiftech Apogee GT on a Q6600 at 3Ghz, Alphacool mosfet block, Zalman northbridge, and then the Alphacool NVXP-G8.
Quite a heap of bits really :o Should I try a batter pump?
Temps are at 80c for the CPU and 62c for the GPU, Both are running at 100% doing folding@home and boinc.
Cpu is clocked to 3Ghz and the 8800 is at 675/900/1782.
 
The maxijet 1200 is not the best pump in terms of pumping head.

I would recommend a Laing DDC + top for your setup.
 
After reading a few reviews I didn't realise how much the full cover blocks really restrict flow and some head presure, (even the EK ones) not what you want with a multi block semi passive loop.

Best advise I can give is use a high flow universal gpu core block (Maze 4's, silverprop) or use a AC Accelero S1. Both will give you a better return for your money and increase your flow rate.

If you do have money to burn then a new pump and EK NB block would also be an option.
And swap the zalman quick release values for high flow barbs (or use the cpc versions) if you haven't already.
 
I have no quick disconnects in the system, it aint going anywhere!
I do have another NB block here, not sure of the make but it's probably better than the zalman one.
I'm not too keen on changing the GPU block as I just bought it!

Are the DDC pumps quiet? and what's the score with the many varients and different tops?
 
The basic DDC pump has not got the greatest specs and is heavily restricted by its poor inlet and small outlet. Replacing the top with one which allows true 1/2" barbs makes a big difference and a top that then allows the inlet to be vertical instead of horizontal makes an enormous difference. Some of the best tops now contain the reservoir so make bleeding and filling extremely easy.

The pumps are very quiet but will likely cause more vibration unless you continue to use one in your current reservoir.
 
DDC 18W good little pumps (with the aftermarket top) and quiet but I get a bit of a vibration issue with mine which I'm in the middle of trying to solve (foam or cradle). Might be cause I've got the older version with the red impeller (?)
 
Well I bit the bullet and bought a fresh DCC+ 18w with an XSPC top and resevoir. I also changed the rad to a 120 TFC xchanger as they were on special.My old rad was a WACC unit and had fixed 8mm push fit connectors that I had adaptors on.
The result is my temps are down to 69 on the cpu with intel's TAT and 50 in speedfan :D
GPU temps are down too, to 56c.
I've got the fan down to 40% so I can't hear it at all, the only noise now is the PSU fan and the odd click from the HDD. Sorted :)
It isn't going to win any prizes in the pretty department but it works well:o
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Old pump and rad....
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