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Topic Title: Zalman 7000B-AlCu and Cool ‘n’ Quiet
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Created On: 01/14/2005 10:44 PM
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 01/14/2005 10:44 PM
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Lepy
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"If an AMD Athlon 64 Processor-In-A-Box package is not used, an appropriate 3rd party heatsink with a thermally controlled fan must be used."

Does Zalman 7000B-AlCu have thermally controlled fan?? Will Cool ‘n’ Quiet work fine with it??
 01/15/2005 06:29 AM
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pcy
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QUOTE (Lepy @ Jan 14 2005, 07:44 PM)
Does Zalman 7000B-AlCu have thermally controlled fan?? Will Cool ‘n’ Quiet work fine with it??

No, but it will work just fine.

QUOTE
"If an AMD Athlon 64 Processor-In-A-Box package is not used, an appropriate 3rd party heatsink with a thermally controlled fan must be used."
I think this statement (though technically correct) can easily be mis-understood.

The Fan has to be "thermally controlled" to get the Quiet bit. Many A64 Mobos do the thermal controlling, so the Fan itself rerquires no extra features.

Let me explain:

CnQ is actually just C - Cool. When the CPU is idle CnQ drops the CPU speed and Voltage, so less heat is produced.

You get less noise because you can then allow the CPU fan to run more slowly, while maintaining the same CPU temperature.

But for this to work you need the fan to be thermally controlled.

On my MSI Kn8 Neo there are bios setting to do this and it works well. You specify the target CPU temp and it adjusts the fan speed to try to keep the CPU at that temp.

Actually, this also works fine with CnQ disabled, which emphasizes the fact that CnQ is actually just the C bit.

I have built several machines which idle with the CPU at c. 45C and CPU fan speeds of 800 rpm. That's without CnQ.

I don't use CnQ because I have found that it does not always revert to full performace mode when a CPU intensive task fires up. Indeed, it always fails to revert to full performance mode when I start up Prime95. I think this problem exists with apps that immediately use all 100% of the CPU.


Peter
 01/15/2005 07:19 AM
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Lepy
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Thanks Peter!

Does Asus A8V board have that bios setting for adjusting the cpu fan speed too??
And one more question...which cooler will do a better job on A64 3200+ (Winchester) - stock (boxed) cooler or Zalman 7000B-AlCu??
 01/15/2005 08:26 AM
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nameinuse
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Look in the uguru utility part in the bios,there you have something called Abit EQ.
 01/15/2005 08:36 AM
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sens
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QUOTE Does Asus A8V board have that bios setting for adjusting the cpu fan speed too??


Yes. It has two features which are bios enabled called Q-fan (I guess that stands for Quiet fan) that control the speed of the CPU fan and the Chassis fans.

Used in concert with CnQ, it control the speed of the cpu and chassis fans.

sens
 01/15/2005 01:53 PM
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pcy
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The Zalman will provide better cooling, and quieter, than any stock cooler from AMD or Intel that I have ever seen.

Apparently the A64 FX series come with a good cooler though.


Peter
 01/15/2005 02:19 PM
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vdub73
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I have the zalman 7000b cu and I can't hear it at all even at full speed. It is quieter than most graphics card fans so chances are you'll never hear it .(I have to open the case and get within a foot of it to hear it)

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A64 3400+@2.808ghz /1 gig Samsung tn-cb3 ddr333@442mhz /Abit KV8Pro rev. 1.1 bios 17/Powercolor X800XL VIVO @ 455/1120 Hiper Type-r 580
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