ok. here's my view of all this.
on the issue of negative pressure:
I dont think this is too much of an issue. consider that during "normal" usage, the 8887's fans
only come on periodically as needed. it seems to me that having the negative pressure between
the cooler and the laptop sucks air in from any direction, Including through the side vent and
out through the laptops fan intake ports, therefore providing at least some active cooling of
the CPU's heatsink. unfortunatly I dont have a tempurature guage to test this with.
However, I have noticed that when I have the 8887 off of the coolerpad, the fans come on more
often. So I know that it does make a difference.
and I understand where Rado is coming from when he talks about the fans competing with each other.
one of the fans on the coolerpad is located directly below the 8887's intake ports. I think that
in a contest the 8887's fans would win hands down when competing for air, but they would still be
competing. so yes, their is a slight disadvantage their. but I think this would only be a problem
under heavy usage. if this is a concern, one can simply disconnect or turn off the added fans when
they expect heavy usage. I also beleive it would be very easy to reverse the in airflow in one of
these devices if one had such a desire.
one could also argue that having the added fans running will pull more air from around the laptop
underneath and faster, therefore providing cooler air as it has less time to gain heat from the
underside of the laptop before moving across the heatsinks.
the Cyber Cooler:
overclocked cafe did a review of the nk-360, located here
the specs as printed on the label are as follows:
Air Flow: 30 CFM
Speed: 3000 rpm
Noise: 21 dba
Voltage: DC 5 V
Power: 1.3 W
Current: 0.26 A
Fan: x3 60x60x10 mm
Dimension 270x 300x 13.8 mm (10.6x 11.8x 0.55 in)
power cord adds 25g
be aware that the model they reviewed seems to be an older version. the newer one that I have has blue
lights, a USB power scource, and different specs. Also it seems this is their first review of a product
of this nature, and therefore possibly biased.
it is plastic, so I wouldn't recomend suspending it between two chairs and standing on it.
It feels like it can take a good bit of twisting force, but the fan-grills are plastic and Inherently
somewhat flimsy. If you push down in the ceter of each grill it doesnt take much to touch it to the fan.
But there is only a little less than a millimeter of clearance anyways. I think I will need to add some
more little rubber feet to it, cuz I'm not very happy with it's traction. like I said, the bottom pads
suck. It slides around like an optical mouse on my llinolium (SP?) floor.
Over-all it's small, has little traction, has cool blue lights, and an on/off switch. But I wouldn't stand
on it. Due to those somewhat flimsy grills, I would be carefull what you put up against it in a backpack.
my thoughts on the Zerus PS2/USB
these are the specs I was able to find.
Aluminum housing: 300x 230x 2mm (11.8x 9x 0.1 inches)
Fan dimension: 60x 60x 15mm
Fan speed: 3200~3500
Air flow: 40 CFM
Noise: 25 dba
PS2/USB power: 5V
As far as sturdiness is concerned, it looks great. I am curious about how many fans it REALLY has.
From what I can see, I would Hate to have to use it on my lap. I dont like the idea of having only
those two metal edges to disperse the 8887's 12+ pounds across my fragile, nerdy legs. that would
get uncomfortable REALLY fast. It also seems like it would be a pain to pack with that huge flap
on the back.
As far as cooling is concerned, I think it would do well, having a metal structure to help
dissapate heat. But again, does anyone know how many fans it REALLY has, or its CFM perhaps?
my thoughts on the nexus tdd-3000:
review located here
This device seems to be a laptop owners dream. it requires absolutly no power, produces no noise, and
has no moving parts to break when you drop/crush it!
These are the Dimensions according to the nexustek
website: 31,3 cm x 30,6 cm. This translates to about 12.3 x 12 in, which makes it just big enough to
have all four of the 8887's feet resting on it.
My question is: how much cooling can this device actually provide for the 8887?
It seems to me that this technology will work much better with direct contact to the heat scource.
which in the 8887's case can only be acheived through odd angles or removal of the laptops feet. only
then, without some very off-center placement, it would be blocking the fan intake ports.
BlueMeanie say he loves his, and I would love to see how he has his setup. Pros and Cons also?
here are some pics of the Cyber Cooler under my 8887: