I decided to compare this unit to the 38cfm 60m delta originally
on the CAK38 and also run the unit at 7v to see how that affects things. I
didn't run at 5v as I was worried about the horror stories I hear of fires
starting due to the extra heat they produce due to more resistance e.t.c.
I also did one test at 7v sucking air OUT instead of blowing in as I noticed
quite a lot of back pressure.
For the testing I used an Athlon (thunderbird) 1.4ghz unit at
1.75v (1.80 in bios). So thats 76.2watts according to Radiate. Testing is
performed on an Abit KT7a using a Senfu Thermal probe to take temperatures.
Air temperatures where taken about 2inches above the fan intake except in
the case of the fan sucking out where the temperature was taken about an inch
to the side of the heatsink. The heatsinks used was the Globalwin CAK38.
To obtain 100% load I used folding@home for around 20 minutes
until it stabilised.
Test
Air Temp
Cpu Temp
Delta T
Delta 38cfm 60mm
26c
44c
18c
80mm Sunon @12v
25c
47c
22c
80mm Sunon @7v
25c
48c
23c
80mm Sunon @7v SUCK
26c
48c
22c
I'm not quite sure why my CPU temperatures are so high but we
can still see a good trend here. The Delta fan is by far the best performer
but makes an awful noise. We lost 4c going to the 80mm but for the difference
in noise for me, this was well worth it. It was intresting to see that turning
the fan round did infact give back the 1c we gained after going from 12 to
7v.
I think I'm definitely going to keep this in my machine becuase
the noise level is now exactly how I've always wanted it. I think the price
is very reasonable for what you get. Something could be made with cardboard
and gaffa (duct) tape but the problems arise here with detatchment dust build
up e.t.c. This certainly is a clean cut solution. I can't say I've used any
other fan adapters but this one is certainly well made so I recommend it.
