Welcome to my pressure drop testing of the XSPC X2O Delta V2 for a wide range of processors.
This page will focus on the pressure drop and flow
characteristics only for this waterblock only.
The base has a very nice mirror
finish as you can see. You might be wondering...were are the
screws? The copper base and brass top are finished to zero
tolerances and press fitted together. Fortunately this is a
simple two layer block, so cleaning should be relatively easy by
removing the barbs and accessing the barb entrys. This does
however mean, it would be very difficult to dissassemble the block for a
detailed cleaning, but I think in general most users will be fine with flushing
the block from the entry points as that's likely where any system
debris would stop as well.
But before we finally proceed to testing, how about a macro of those
pins...The following is a look down one of the G1/4 barb holes for
scale. Now that's what I call "Micro Machining" very nice!
Delta V1 vs Delta V2
The block revision between delata 1 and 2 is a fairly simple one.
V1 had a relatively simple cirulcar barb entrance and V2 added in
a channenl cut into the barbs that spreads the flow over a great area
of the pins. First here are some internal pictures provided to me
by XSPC of the V1 opened up. You can see the relieve cut into the
top was cirlces that were just slightly larger than the barb openings.
Delta V2 added another set of cuts that run up and down and distribute
the flow over the base. Here is a drawing that XSPC provided to
me that helps explain that.
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 477 Mark IV - Accuracy .5% of Full Scale. Range 0-20.00 PSI range, Resolution .01 PSI
Instruments 7520 Series 0-5GPM, 250mm scale - Accuracy 2% of Full Scale.
Range 0-5GPM, Resolution .1 GPM (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 my results are as follows, the pressure drop was very very low (VERY GOOD!):
And if you're not familiar with
what this means, I'm providing a relative chart below with several CPU
waterblocks. It is particularly important to have low pressure
drop when installing multiple block loops because every block in that
loop creates restriction and too much on any one block can potentially
reduce flow rates enough to influence performance on the rest of the
system. So too much restriction can mean less performance on
other blocks and the radiator dissipating the heat.
The XSPC X2O Delta V2 has excellent flow rate characteristics. It
nearly ties the Danger Den MC-TDX for being the least restrictive
micropin style CPU block, very impressive! It appears the very large
and tall pins are providing a very
large array to distribute flows and reduce resistance.
The XSPC Delta CPU V2 block is an extremely free flowing block with minimal pressure drop!
flow rate characteristic for the XSPC X20 Delta CPU V2 is exceptionally
good and nearly the best I've tested to date for a micropin CPU block. This will enable
users to utilize the block in multiple block loops with very little impact to flow rate.