Zalman CNPS9500 review

Cooling Processors quietly

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cotdt
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Post by cotdt » Thu Aug 25, 2005 8:57 pm

Well CVD production of small diamonds is really cheap. I have diamond knife sharpeners having a decent layer of small diamonds on top of metal, and those are pretty cheap $15. If this is indeed cheaper than CVD process of making diamonds, then it should be pretty cheap.

Here are some very rough estimates of a hypothetical DiaCu heatsink based on the Thermalright XP-90 heatsink. Under low RPM fan, the XP-90C has 10% smaller deltaT compared to XP-90 according to tests. Since copper has roughly twice the thermal conductivity as aluminum, and DiaCu is three times more effective than copper, it probably has a 15% smaller deltaT compared to copper XP-90C. So maybe 20-30% smaller deltaT compared to aluminum. However, DiaCu is lighter than copper therefore it can be made bigger similar to the XP-120 in size, but much more effective under low-RPM fans and passive cooling. Difference is expected to be much smaller under high RPM fans, but SPCR people aren't interested in high RPM stuff.

I apologize for going off topic. To get back on topic, what about a DiaCu/DiaAl version of Zalman 9500? Heh heh heh.

PCMonkey
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Post by PCMonkey » Thu Aug 25, 2005 9:59 pm

Hopefully they will announce an AlCu version of the CNPS9500 at a lower pricepoint!

Cooler Master
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Post by Cooler Master » Thu Aug 25, 2005 10:39 pm

Me too! I have the 7700AlCU and by all reports the difference between this and the all-copper 7700Cu is minimal, maybe 1 or 2C. For the money the Cu is not very good value, especially with a mod that keeps the AlCU cool and quiet.

ushac
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Post by ushac » Fri Aug 26, 2005 1:48 am

Hmm. Seems they are gearing Heathru at heat spreaders. I can see amd fx or intel ee cpu's with this stuff in the spreader. Perhaps even with thin film thermoelectrics in them. 20% higher performance! 20 times the price! :wink:

Sorry for going way off topic. Maybe we should start a separate thread about this...

/ushac

ryboto
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Post by ryboto » Fri Aug 26, 2005 11:34 am

http://www.atacom.com/program/print_htm ... SER_ID=www

$199??? why are they the only reseller reporting this as the price?

earthfall
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Post by earthfall » Sun Aug 28, 2005 9:40 pm

ryboto wrote: $199??? why are they the only reseller reporting this as the price?
Zalman tech announced the local price of this cooler as $75 in korea.

SebRad
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Post by SebRad » Mon Aug 29, 2005 6:00 am

Overclockers.co.uk are listing (OoS) the Zalman 9500 with a price here.
Summary: 9500cu~£45, 7700Cu~£35 and 7000Cu~£27, I remember when the 7000 first came out it was £40+ so I don't think the 9500 is unreasonable although for comparison the Scythe Ninja is available here for £41.43.
Seb

notareal
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Post by notareal » Mon Aug 29, 2005 10:54 am


cotdt
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Post by cotdt » Mon Aug 29, 2005 11:54 am

If you live in the USA (especially California), you can get much better prices than that! You guys should come to the USA to vacation and buy your CPU coolers here.

tonyw
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Post by tonyw » Mon Aug 29, 2005 7:37 pm

Hello all, I found a cheaper price at Sharka Computers in the U.S.: http://sharkacomputers.com/zacn95ledcpu.html

ryboto
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Post by ryboto » Thu Sep 01, 2005 4:54 am

found another review in french.. it seems that the 9500 is a competitor at 12v. What's interesting is how little it's performance is reduced when set at 5v. I just wish there were more reviews like this..and in english.
43 foot long URL edited by moderator

Mats
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Post by Mats » Mon Sep 05, 2005 1:01 pm

Zalman have updated their site with more info.

Code: Select all

Model                     7000B Cu   7700 Cu    9500
Size, LxWxH (mm)          109x109x62 136x136x67 85x112x125
Weight (g)                755        918        530
Dissipation area (cm²)    3,154      3,268      3,698  
Thermal resistance (°C/W) 0.20-0.27  0.19-0.24  0.12-0.16

Fan diameter (mm)         92         120        92
Fan speed (rpm)           1350-2600  1000-2000  1350-2600 
Noise level (dB)          18-27.5    20-32      18-27.5 
Looks good! :D

Atragon
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Post by Atragon » Wed Sep 14, 2005 3:56 pm

Just a thought about modding this, but why not yank the stock 92mm fan, block the central hole with a plug of some sort and mount a 120mm fan in front of the heatsink?

I'd imagine that this would dramatically improve airflow across the fins and/or decrease noise level since it would allow for use of a Nexus 120mm fan or similar. It would be nice if whichever SPCR staff member or anyone else who has access to said heatsink to take a look at this mod from a feasability standpoint, I suspect the results would be of great interest.

cotdt
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Post by cotdt » Wed Sep 14, 2005 6:34 pm

Atragon wrote:Just a thought about modding this, but why not yank the stock 92mm fan, block the central hole with a plug of some sort and mount a 120mm fan in front of the heatsink?

I'd imagine that this would dramatically improve airflow across the fins and/or decrease noise level since it would allow for use of a Nexus 120mm fan or similar. It would be nice if whichever SPCR staff member or anyone else who has access to said heatsink to take a look at this mod from a feasability standpoint, I suspect the results would be of great interest.
i agree =)

Barred
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Post by Barred » Mon Sep 19, 2005 7:08 am

First post here but I thought you might like some info on real world experience with the CPNS9500 LED.

My system is a P4 3.2 on a P4C800-E-Delux in a Coolermaster Praetorian (http://www.coolermaster.com/index.php?L ... Praetorian) with an Arctic Cooling cooled BFG6800U OC along with a couple of WD250gig SATA drives and 4gig of 3200 RAM.

I have been running the 9500 for just over a week now since QuietPC started sending them out. For the noise side of things the figures for the fan have been posted above and my findings are purley subjective. Before putting the 9500 in I was running a Coolermaster Aero4(ISB-V73). On full fan speed I can not hear the fan over those in the case (and they are not that loud), with the PSU fan being the loudest.

No for tempretures. There is no comparison on cooling as the Aero came in at 45degC idle, 65degC under load and system 45-55degC. The CPSN9500 LED comes in at 30degC idle, 40degC under load, 33-36degC for the system.

I do not know if the Ninja is any taller thant the 9500 but in my case I have about 10mm between case side and cooler top.

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