Zalman CNPS 8000

[poup23]

Hi,

I would like to have feedback on the Zalman CNPS 8000 CPU Cooler if anyone has one installed on his CPU or know where I can get a good review or comparison, especially with the TT Big Typhoon. I find my big typhoon too much noisy when my computer is running while i'm sleeping. I would like to know if it could be a great replacement to get a more silent computer.

 

[asgallant]

The CNPS 8000 is a small form factor cpu HSF, so it probably will not perform as well as, say, the CNPS 7700 or CNPS 9500 (unless you happen to have a SFF rig, in which case it may just be right for you). Google the CNPS 8000, I'm sure there are reviews out there if you need them.

 

[Crashman]

It's a great cooler, I just finished testing one. But it's not quieter than the Big Typhoon.

 

[poup23]

That's what I wanted to know, thanks. But does someone know a CPU cooler that will be quieter and at least as efficient as the TT Big Typhoon??

 

[allred]

I've got a Zalman CNPS9500-LED that I have running about 2000 RPM on the supplied fanmate, and it's whisper quite and keeps my Northwood P4 cooler than 50°C on full load with no case fans on. I really recommend it, my boxed cooler kept my P4 at 62°C on full load at 2800 RPM, and was loud as hell.

 

[poup23]

my big typhoon actually runs at 1300 RPM and keep my athlon 64 3200+ under 35°C that was about 47°C with the stock fan, so I'm not sure the efficiency of your zalman would beat off my big typhoon one's.

 

[DrBlofeld]

your zalman would beat off my big typhoon.

OK, that would be interesting, I guess? 😳

 

[asgallant]

your zalman would beat off my big typhoon.

OK, that would be interesting, I guess? 😳

Interesting? Maybe, but Zalman isn't hot, so I wouldn't want to watch. >;o)

 

[allred]

my big typhoon actually runs at 1300 RPM and keep my athlon 64 3200+ under 35°C that was about 47°C with the stock fan, so I'm not sure the efficiency of your zalman would beat off my big typhoon one's.

Bare in mind your AMD will run far cooler than my Intel. It's a netburst, so gives off a hell of a heat.

 

[poup23]

You got a point!! AMD Rules!!

 

[iambored]

how about the vapochill micro. gets good reviews, but never see it mentioned.

 

[poup23]

Maybe,

But I'm not confident in CPU coolers that do not blow right to the CPU, and just blow hot air above away. It cools the system around the CPU but not really the CPU itself, even if it has heatpipes. I don't trust that to be enough efficient.

 

[teldar]

Maybe,

But I'm not confident in CPU coolers that do not blow right to the CPU, and just blow hot air above away. It cools the system around the CPU but not really the CPU itself, even if it has heatpipes. I don't trust that to be enough efficient.

I take it you don't really know how a heatsink works? A heatsink where the fan blows across the fins is intrinsically more efficient than one that blows down on the heatsing beacuse all the fins/prongs are subjected to the same flow rather than the hottest ones not getting any airflow because they are in the middle of the heatsink. Basic thermodynamics and fluiddynamics tells us that the cnps 9500 is going to be better than any standard finned heatsink. Why do you think manufacters have started making heatsinks that are v-shaped? It's to have airflow past the fins uninterrupted. If the CNPS weren't $60, I'd own two of them. Anyway, the reviews show it's one of the best coolers around. Why use your mistrust as a reason not to buy it instead of its effectiveness to buy it.

This review seems a little questionable at times, but it shows the 9500 to be better than watercooling for rapidity of heat dissipation.
http://www.techpowerup.com/reviews/Zalman/CNPS-9500LED/5

Teldar

 

[Multiplectic]

I was going to buy a 7700Cu, but it doesn't fit in my case. :lol:
So, I switched to a 7000Cu, arriving in a few days. 😀

Zalman is the way to go if you want efficient and "silent" cooling. Those guys are superb!

 

[poup23]

I know about heatsink and I'm confident on them, but I also think that if you blow through a heatsink and in addition you blow directly on the CPU it is more efficient than just the heatsink alone.

 

[teldar]

... but I also think that if you blow through a heatsink and in addition you blow directly on the CPU it is more efficient than just the heatsink alone.

Um, no?
It is less efficient to blow down than across. You don't get good airflow blowing down. What hapens when you tip a fan over and it blows on the floor? No airflow... It's not that hard to imagine. The important thing is the efficiency of the heat pipes. If they are good, it is going to intrinsically be better to flow across vs down due to improved air flow. MUCH better airflow with much lower RPM. You don't need a fan with higher pressure that way because there is not really any resistance to the flow.

IF you had a fan that was a point mass and blew 60CFM straight down, it would be a good cooler, but the wider the fan, the less efficient blowing down because its own flow interferes with itself. It's not like the air goes away once it reaches the base of the heatsink, it goes sideways, decreasing airflow to the base.
That's why you want one that is made to blow sideways. I have always thought that maybe the way to build them would be to just have a cutout and mount the fan vertically rather than horizontally. But the heat pipes take care of that.

Teldar

Teldar

 

[poup23]

ok,

I'm probably mistaken, thanks to correct my thought.

 

[poup23]

Also,

with that answer, you seem to say that I would rather build something like the Zalman CNPS 9500??

 

[teldar]

Also,

with that answer, you seem to say that I would rather build something like the Zalman CNPS 9500??

It seems to me that it's the coolest heatsink on the market for how quiet it is. I don't know that much about the tornado, but I bet the 9500 is quite a bit quieter....
The only problem is you need a full atx case for it. It's huge....and heavy. But very nice...