Welcome to my pressure drop testing of the Aqua Computers Double Impact CPU water block.
This page will focus on the pressure drop and flow
characteristics for this waterblock.
The block is a finely CNC machined block. It consists of a
machined copper pin matrix CPU base, a plated copper middle/top block,
and a blue acrylic top. The block is very dense and the hardware
and fitment quality is very good.
Hydraulics and Pressure Drop Testing
most scientific way to determine a blocks hydraulic resistance is to test
pressure drop. Pressure drop is a measurement of pressure loss across a block
that varies with flow rate. This is basically a measurement of energy loss, and
directly influences how much flow rate you will have.
Digital Manometer 475 Mark III - Accuracy .5% of Full Scale. Range 0-200"
W.C., Resolution .1" W.C.
Instruments 7520 Series 0-5GPM, 250mm scale - Accuracy 2% of Full Scale.
Range 0-5GPM, Resolution .1GPM (can be interpolated to .02GPM)
- Water Source - Household water pressure - 50PSI at >5GPM - Because flow
rate readings are instantaneous, household tap water and water pressure are a
good and powerful source for pressure drop testing.
And if you're not familiar with
what this means, I'm providing a relative chart below with several CPU
waterblocks. For increased flow rates, the lower pressure drop
results will net the best flow rate results. This is important
for users with multiple block loops, as you need to keep an eye on flow
rate and make sure you don't install too many high restriction blocks
in the same loop. Too much restriction could lower flow rate to the point
where your other blocks or radiators in the same loop begin to loose
some thermal efficiency.
The Aqua Computers Double Impact
CPU water block is amongst the "High Restriction" grouping of water
blocks. In a CPU only loop, this higher restriction has little
influence on the net temperature result, but it may create too much
restriction for multiple block loops. In general I would suggest
a stronger pump to take full advantage of this higher restriction
block. Recent information is indicating that some of the high
restriction/nozzle type blocks seem to benefit from additional pumping
power and flow rate than we originally thought. I would also
suggest that you are very careful about
multiple block loops and ensure you still have adequate flow rates.
Less restrictive than a Fuzion with 3.5 or 4.4mm nozzle and washer, slightly more restrictive than an EK supreme.