Zalman 7700cu not so good?

[aatf510]

Ok, I just got a Zalman 7700cu for ZZF. It's fairly quiet and nice looking, but it sucks at cooling for it's size and weight???
I was using Thermaltake Venus 12 @ 5,300 before which would allow a 1.6v Clawhammer 3500+ load @ 54C, but the Zalman @ maximum keeps it 60C+.
I really want to replace the Thermaltake because it's way too loud, but the Zalman doesn't do the job. (with 62C I start to get errors in Prime95)
What about a xp-90 or xp-120? Are there any comparisions of the xp-120 to the Zalman out there?

 

[TankGuys]

Originally posted by: toattett
Ok, I just got a Zalman 7700cu for ZZF. It's fairly quiet and nice looking, but it sucks at cooling for it's size and weight???
I was using Thermaltake Venus 12 @ 5,300 before which would allow a 1.6v Clawhammer 3500+ load @ 54C, but the Zalman @ maximum keeps it 60C+.
I really want to replace the Thermaltake because it's way too loud, but the Zalman doesn't do the job. (with 62C I start to get errors in Prime95)
What about a xp-90 or xp-120? Are there any comparisions of the xp-120 to the Zalman out there?

Are you sure you installed it correctly? I have the 7700Cu and love it. Everyone else who has it seems to love it as well, so I suspect you either got a strange one, or there might be an installation issue.

 

[peleejosh]

Did you use AS5?

 

[Vegitto]

Originally posted by: TankGuys

Originally posted by: toattett
Ok, I just got a Zalman 7700cu for ZZF. It's fairly quiet and nice looking, but it sucks at cooling for it's size and weight???
I was using Thermaltake Venus 12 @ 5,300 before which would allow a 1.6v Clawhammer 3500+ load @ 54C, but the Zalman @ maximum keeps it 60C+.
I really want to replace the Thermaltake because it's way too loud, but the Zalman doesn't do the job. (with 62C I start to get errors in Prime95)
What about a xp-90 or xp-120? Are there any comparisions of the xp-120 to the Zalman out there?

Are you sure you installed it correctly? I hate the 7700Cu and love it. Everyone else who has it seems to love it as well, so I suspect you either got a strange one, or there might be an installation issue.

You hate it and love it at the same time? I'm assuming typo. Anyway, the 7700CU cools real good, must be an installation error.

 

[greennoob]

FWIW i'll offer this. xp90 got me 3-4c less than a zalman 7000alcu. xp90 now has a avc fan that i never could get the specs on but it runs about the same speeds and is slightly louder.

 

[furballi]

If you're running a 120 mm fan at 5300 rpm, then it will move a lot more air across the heat sink. The Zalman's 120 mm tops out at 2600 rpm. The 7700Cu is a more efficient cooler given the SAME amount of air flow across the heat sink. You can't cut the air flow in 1/2 and expect the same level of performance.

That said, the performance of the stock 7700Cu should come to within 3C of the best air CPU cooler.

 

[aatf510]

The TT venice 12 I ran has a 80mm fan. I think it cools much better than other cooler I have used, but it does sound like a vaccum cleaner (I am not exagerrating)
My Zalman seems to stay at 1800rpm only?? Am I doing something wrong?
and, yes I am using AS5.

 

[TankGuys]

Originally posted by: Vegitto


You hate it and love it at the same time? I'm assuming typo. Anyway, the 7700CU cools real good, must be an installation error.

Hmmm apparently my finger decided to hit the "T" key instead of the "V" haha. I meant, of course, that I HAVE the 7700Cu.

I have to stop trying to multi-task so much!

 

[furballi]

You probably need to adjust the potentiometer on the Fanmate controller. You could connect the fan directly to the motherboard. If the motherboard is putting out 12V, then you should see at least 2500 rpm on that 120 mm Zalman case fan.

You need to go into the BIOS and disable the fan temperature control if you're not getting 12V out at the motherboard. Other option is to set max 12V above 50C CPU temperature.

 

[aatf510]

CNPS7700-Cu Spec
- Dimensions : 136(L) x 136(W) x 67(H)mm
- Weight : 918g
- Base Material : Pure Copper
- Dissipation Area : 3,268 cm2
- Bearing Type : 2-Ball
- Speed : 1,000 ~ 2,000rpm ± 10%
- Thermal
Resistance : 0.19 ~ 0.24°C/W
- Noise Level : 20 ~ 32dB ± 10%

Well, that explains why it's only 1800rpm on mine, and it's not pushing as much as a normla 120mm fan.

 

[Merovingian]

I'm running the 7700cu at 2.6Ghz on a winnie 3000+ and I'm getting 52C under heavy load over extended periods of time.