Danger in mounting a CNPS7000A-Cu?

moving shadow · Post by **moving shadow** » Sat Nov 22, 2003 9:46 am

Well i really want this HSF, but after seeing it weighs a monstrous 773g, and bearing in mind AMD recommends 300g for a HSF, i am worried its not going to be safe attached to my Asus A7V8X (with 2000XP) mobo. Has anyone had any probs with this fans weight on a this or a similar board? I wont be moving my PC around, but damn thats one heavy sucker

GamingGod · Post by **GamingGod** » Sat Nov 22, 2003 10:23 am

get the alcu version, it works just as good and weighs about half as much

Post by **Ralf Hutter** » Sat Nov 22, 2003 11:00 am

GamingGod wrote:get the alcu version, it works just as good and weighs about half as much

What he^^ said. All the specifics are in MikeC's thorough review.

Post by **Rusty075** » Sat Nov 22, 2003 3:15 pm

Yeah what they^^^ said.

But also realise that there has never been a report of a properly installed HSF coming loose due to its weight while in normal operation.

The 300g "limit" is a recommendation to OEM's and SI's, mainly due to the shipping risks.

Ana · Post by **Ana** » Sun Nov 23, 2003 9:56 am

I think using a too big a heatsink effectively ends your warranty right
there. Or does switching the heatsink do that already? I'm not sure about
the technicalities, but I'm sure that if you suspend 770 grams from your
CPU and it breaks, you won't get a new one from the shop..

Post by **Rusty075** » Sun Nov 23, 2003 10:46 am

The heatsink doesn't hang form the CPU, it hangs from the motherboard.

The only effect a heatsink failure could have on a CPU is overheating. But since any modern Socket A motherboard (including the Asus A7V8X ) has overheat protection, that's a non-issue.

Liquidated · Post by **Liquidated** » Sun Nov 23, 2003 4:38 pm

hmm ralf, with the 2 setups you list the 2.4c and the 3.0c, all to do over again would you stick with what you have or go with the 7000 (alu or Cu)

just curious.

Cheers!
-Liq

Sledge · Post by **Sledge** » Sun Nov 23, 2003 5:55 pm

They set a limit at 300g because if it weighed more, transporting your computer via car or shipping could cause the HSF to damage the CPU. If you're going to move your computer like that, just remove the HSF temporarily.

I have the all-copper version and it works great.

Ana · Post by **Ana** » Mon Nov 24, 2003 5:26 am

Rusty075 wrote:The heatsink doesn't hang form the CPU, it hangs from the motherboard.

The only effect a heatsink failure could have on a CPU is overheating. But since any modern Socket A motherboard (including the Asus A7V8X ) has overheat protection, that's a non-issue.

I know, I installed one a week ago, but I still think that vibrations or
shocks to the case might dent or chip the CPU, since it is directly under
and in contact with the CPU. The motherboard bends and flexes aroud
in if the HS moves, the CPU does not.. But yeah, that's probably just
an issue if you move the PC around. Still, I don't think warranty covers
it anymore if you use a heavier heatsink than recommended. The Al-Cu
performs just as well

Post by **Ralf Hutter** » Mon Nov 24, 2003 5:46 am

Liquidated wrote:hmm ralf, with the 2 setups you list the 2.4c and the 3.0c, all to do over again would you stick with what you have or go with the 7000 (alu or Cu)

just curious.

Cheers!
-Liq

I'd go with the 7000AlCu (and actually already have on one of my rigs). They cool better than either the SLK900 or the MCX478V, especially at very the low fan speeds we like to run. Did you see my comparison/review of P4 heatsinks? Lots of interesting info in there.

moving shadow · Post by **moving shadow** » Mon Nov 24, 2003 7:44 am

hey ralf, would you say the CPNS7000ALCU is quieter at low speeds than sy the zalman flower with the 92mm fan?

Post by **Ralf Hutter** » Mon Nov 24, 2003 12:39 pm

moving shadow wrote:hey ralf, would you say the CPNS7000ALCU is quieter at low speeds than sy the zalman flower with the 92mm fan?

It all depends what 92mm fan you're using with the flower. If you're using the stock Zalman 92mm fan that comes with the flower then the 7000 fan will be waaay quieter.

From my testing I'd say that the Zalman 7000 fan is a quiet or quieter than a 5V Panaflo L1A and I've never heard a 92mm Papst so I can't comment on it. Off the top of my head I can't think of any other 92mm fans that are as quiet as the Zalman 7000 or the L1A either.

JVM · Post by **JVM** » Mon Nov 24, 2003 12:40 pm

Ralf Hutter wrote:
Liquidated wrote:hmm ralf, with the 2 setups you list the 2.4c and the 3.0c, all to do over again would you stick with what you have or go with the 7000 (alu or Cu)

just curious.

Cheers!
-Liq
I'd go with the 7000AlCu (and actually already have on one of my rigs). They cool better than either the SLK900 or the MCX478V, especially at very the low fan speeds we like to run. Did you see my comparison/review of P4 heatsinks? Lots of interesting info in there.

I wonder how an SLK 800 or 900 with the Nexus Real Silent Case Fan running at 12 volts would compare. According to what I've read here, the Nexus 80mm fan is quieter than the Panaflo 80mm L1A.

Sledge · Post by **Sledge** » Tue Nov 25, 2003 5:19 am

JVM wrote:I wonder how an SLK 800 or 900 with the Nexus Real Silent Case Fan running at 12 volts would compare. According to what I've read here, the Nexus 80mm fan is quieter than the Panaflo 80mm L1A.

If it's quieter than an L1A, the chances are good that it doesn't move as much air as an L1A (regardless of what Nexus' marketing department lists on the spec sheet).

JVM · Post by **JVM** » Tue Nov 25, 2003 5:47 am

Sledge wrote:
JVM wrote:I wonder how an SLK 800 or 900 with the Nexus Real Silent Case Fan running at 12 volts would compare. According to what I've read here, the Nexus 80mm fan is quieter than the Panaflo 80mm L1A.
If it's quieter than an L1A, the chances are good that it doesn't move as much air as an L1A (regardless of what Nexus' marketing department lists on the spec sheet).

A test comparing the Nexus running at 12 volts against the Panaflo at 9 volts would be interesting.

Supposedly, the Nexus has no bearing noise or annoying clicks that have been reported by users of undervolted Panaflos.

Post by **Ralf Hutter** » Tue Nov 25, 2003 5:47 am

Sledge wrote:
JVM wrote:I wonder how an SLK 800 or 900 with the Nexus Real Silent Case Fan running at 12 volts would compare. According to what I've read here, the Nexus 80mm fan is quieter than the Panaflo 80mm L1A.
If it's quieter than an L1A, the chances are good that it doesn't move as much air as an L1A (regardless of what Nexus' marketing department lists on the spec sheet).

My thoughts exactly.

The only way to know for sure would be to try it. If someone wnats to loan me a Nexus Real Silent fan I'll try it on an SLK900 in my test setup and post the numbers and sent your fan back to you.

Danger in mounting a CNPS7000A-Cu?

Danger in mounting a CNPS7000A-Cu?

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