Zalman CNPS20X

Minstadave said:
Zalman have been dead in the water for years then suddenly come back with a Noctua-killer. Weird.
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And they were already just riding on old repuration for years before going silent.

While heatsinks themselves look well made, that installation would be bad even for entry level and fans look like overload of marketing BS.
Frameless fans are lousy at producing any pressure to push air, even in almost free air situation:
https://www.silentpcreview.com/node/739/3#ac
Then there's that major marketing BS obstacle on intake side of the fan...
Also SPCR found most Zalman fans to be acoustically mediocre when Zalman was still active.
 
Are you quoting from 12 years ago on fan data?
Did you read the actual review with the various temp they demonstrated?

The temp this cooler produces look to be very impressive, but installation seems to be the main issues, especially if building within a case, granted I feel that is unlikely, as you have to replaced the backboard as with many other coolers, so i would expect people to be building out of case and on the flat.

I am looking forward to other reviews of these fans.
 
EsaT said:
Physics hasn't changed any and such fan is substandard compared to normal fans.
If you disagree with physics, try walking over roof's edge to see if gravity doesn't exist.
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So why does this fan configuration seem to be performing better than other versions, is it the small miniblades angled between the blades, or the intake for the central region not being pulled through from the other?
Physics may not change but its application in specific areas certainly can and does change.
 
peahead said:
https://www.overclockers.co.uk/zalm...ler-with-dual-140mm-fans-black-hs-09b-za.html

Anybody using one of these ? i see its been getting some positive reviews.

https://www.kitguru.net/components/leo-waldock/zalman-cnps20x-and-cnps17x-noctua-look-out/
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Look at other reviews. It's not all that great being louder with similar temps. And keep in mind these reviews want readers and often have little to no idea how to accurately test coolers. They openly say room temp is within 2-3c. This means room is like 20-23c, so CPu temps of 70c on one cooler in session room is 20c would be 73c if room was 23c .. 4c different, yet both tests are same delta temp between air temp into cool and CPU. ;)

In video review below at about 4:20 minutes results show both cooling about the same, and I suspect similar room temperature variables are at play. ;)
https://www.youtube.com/watch?v=WkN0vTSPTcw
 
Destination said:
Which other reviews?
The kitguru one was v controlled.
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Very controlled? Really? Not monitoring and recording actual air temp entering cooler when recording CPU temp but instead using room temp of 18-19c leave me wondering what the actual air temp into coolers they test really is. Using room temp within 18-19c means there is at least 1c of error, possibly more depending on how much warmer air entering cool actually is .. an I would be extremely surprised if it was not warmer. ;)
 
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