Zalman 9500 AM2

Bobendren · Post by **Bobendren** » Fri May 26, 2006 7:41 am

Sorry if this has already been posted, but i searched and couldn't find anything.

http://www.frostytech.com/articleview.c ... cleID=1958

Man this thing looks awesome. I'm curious to find out how the chrome affects its performance.

rpsgc · Post by **rpsgc** » Fri May 26, 2006 9:22 am

It looks neat. Too bad about the green LED though

*wonders if Zalman will ever do a 120mm version*

Bobendren · Post by **Bobendren** » Fri May 26, 2006 9:28 am

rpsgc wrote:It looks neat. Too bad about the green LED though

*wonders if Zalman will ever do a 120mm version*

Yeah well it's nVidia's colours so they sort of have to use green.

They're supposed to be releasing a 110mm version soon, dubbed the CNPS9700.

rpsgc · Post by **rpsgc** » Fri May 26, 2006 9:33 am

Bobendren wrote:Yeah well it's nVidia's colours so they sort of have to use green.

I know, I just don't like green

Bobendren wrote:They're supposed to be releasing a 110mm version soon, dubbed the CNPS9700.

Oh yeah, that's right. I almost forgot about that one

Howard · Post by **Howard** » Fri May 26, 2006 11:55 am

rpsgc wrote:
Bobendren wrote:Yeah well it's nVidia's colours so they sort of have to use green.
I know, I just don't like green

Bobendren wrote:They're supposed to be releasing a 110mm version soon, dubbed the CNPS9700.
Oh yeah, that's right. I almost forgot about that one

Why not 120mm?

Bobendren · Post by **Bobendren** » Fri May 26, 2006 12:13 pm

I think it would make the heatsink too tall, and would interfere with the side panels of smaller cases.

edit: So does any know the thermal conductivity of chrome and how it compares to copper?

rpsgc · Post by **rpsgc** » Fri May 26, 2006 12:19 pm

Bobendren wrote:edit: So does any know the thermal conductivity of chrome and how it compares to copper?

That's not chrome! It's still copper.

The Zalman CNPS9500 AM2 is a full copper heatsink, except its surface has been brightly chrome plated (...)

http://www.frostytech.com/articleview.c ... cleID=1958

Goldmember · Post by **Goldmember** » Fri May 26, 2006 2:49 pm

QuietPC says it's Nickel plated. I went to the 9500 AM2 product page on Zalman's website and I couldn't find chrome or nickel. I doubt I would buy this anyway due to price/performance and noise.

Since when are GPU and Mobo Chipset companies approving CPU HSFs?? Maybe Zalman just needs the money.

ATI and Nvidia are getting annoying with their marketing antics.

green · Post by **green** » Fri May 26, 2006 4:02 pm

rpsgc wrote:
Bobendren wrote:Yeah well it's nVidia's colours so they sort of have to use green.
I know, I just don't like green

i don't like you either

generally i don't like these big beefy coolers
yes they cool better for the sound level they produce
but i'm starting to think they're getting a little too big

Bobendren · Post by **Bobendren** » Sat May 27, 2006 3:25 am

rpsgc wrote:
Bobendren wrote:edit: So does any know the thermal conductivity of chrome and how it compares to copper?
That's not chrome! It's still copper.

The Zalman CNPS9500 AM2 is a full copper heatsink, except its surface has been brightly chrome plated (...)
http://www.frostytech.com/articleview.c ... cleID=1958

Yes i realize that. But if chrome's thermal conductivity, if that's the right term, is less than copper's then it would decrease its performance, unless the chrome, or nickel plating don't form oxides.

Al · Post by Al » Sat May 27, 2006 3:47 am

Seems odd that the -AM2 version would not come with a 4-pin PWM fan like the -AT version for LGA775... I thought AM2 mobos were all getting 4-pin PWM headers (backwards compatible with 3-pin fans of course)?

FrostyTech wrote: The socket AM2 standard also introduces Pulse Width Modulation (PWM) fan speed control

rpsgc · Post by **rpsgc** » Sat May 27, 2006 4:20 am

Bobendren wrote:Yes i realize that. But if chrome's thermal conductivity, if that's the right term, is less than copper's then it would decrease its performance, unless the chrome, or nickel plating don't form oxides.

http://www.frostytech.com/articleview.c ... 958&page=5

Bobendren · Post by **Bobendren** » Sat May 27, 2006 5:36 am

mmm....I looked at that when i read the review, but they merely have the fan speed on "high". There is no indication of rpm. And the considering the AM2 version put out 3dB more than the standard one, it may well be spinning faster. Anyway a 0.8'C decrease is nothing to shout about.

jmke · Post by **jmke** » Mon May 29, 2006 2:31 am

Al wrote:Seems odd that the -AM2 version would not come with a 4-pin PWM fan like the -AT version for LGA775... I thought AM2 mobos were all getting 4-pin PWM headers (backwards compatible with 3-pin fans of course)?

FrostyTech wrote: The socket AM2 standard also introduces Pulse Width Modulation (PWM) fan speed control

that's a very good point you make there, the nForce5 does support 4-pin connectors and Zalman should have used the same connector as on the -AT (S775) version.

Al · Post by Al » Mon May 29, 2006 1:22 pm

jmke wrote:
Al wrote:Seems odd that the -AM2 version would not come with a 4-pin PWM fan like the -AT version for LGA775... I thought AM2 mobos were all getting 4-pin PWM headers (backwards compatible with 3-pin fans of course)?

FrostyTech wrote: The socket AM2 standard also introduces Pulse Width Modulation (PWM) fan speed control
that's a very good point you make there, the nForce5 does support 4-pin connectors and Zalman should have used the same connector as on the -AT (S775) version.

I suppose they're retaining backwards compatibility so that people with s939 boards will be tempted to part with a few extra squids for the bling...

=assassin= · Post by **=assassin=** » Wed May 31, 2006 5:59 am

I'm actually quite impressed with the fixing method the 9500 AM2 cooler has for AM2 motherboards - unlike the old version, it simply uses the existing retention brackets so much easier to install.

lm · Post by lm » Fri Jun 02, 2006 9:23 am

Bobendren wrote: Yes i realize that. But if chrome's thermal conductivity, if that's the right term, is less than copper's then it would decrease its performance, unless the chrome, or nickel plating don't form oxides.

You're not quite exact.

For example aluminium forms a very thin oxide layer on it's surface immediately when in contact with air. It's so thin you can't really see it, but it protects the underlying aluminium from further corrosion.

Copper on the other hand, just like iron, can "rust" through.

There's this liquid metal (of which name I can't remember), which makes holes in aluminium plates, because it effectively removes the protective layer of aluminium oxide, and thus exposes the fresh layer of aluminium metal, which forms oxide immediately. This happens as long as there is metal left, making a hole.