Thermalright SP-94 or Zalman CNPS7000A-Cu??

[Vince604]

I currently am using an SLK-900U but may be going for a new heatsink.

I'm trying to decide which heatsink out of the two I should buy.

Thermalright has heatpipes but Zalman I believe may have a more copper.

If both were to use the exact same fans, which heatsink would stay cooler?

What would you guys prefer?

 

[LtBlue14]

the SLK-900U is better, by about 5C at 100W

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this signature area is too dern short, no space to put your system specs

 

[Vince604]

thanks. Where did you get that info?

 

[scottchen]

check overclockers.com's heatsink ranking. SP94 comes on top then SLK900U, the Zalman series are pretty behind since they use weak fans. With strong fans I don't think it makes that much difference on their heatsink. Because you can never really install it properly since you'll have to saw up a 92mm and just won't fit properly back into the original fan slot.

-Intel PIV 2.4C @ 3.84G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800pro @ 490/780 -SB audigy -80G Maxtor Diamond Plus9 Ultra ATA-133 hdd -450 Enermax PSU

 

[Vince604]

yeah I've checked overclockers.com but then when you really look at it, each one uses different fans. I read the reviews and for the Zalman, they said:
"Motherboard results place the Zalman CNPS7000-Cu, at its quietest setting, in the mid rank of P4 heatsinks (Heatsink Ranking) tested to date. At its highest setting, it ranked near the top."

and when I look at the SP-94 it's going at 4838rpm's with a 80mm fan vs the 92mm Zalman going half the rpms at max speed.

Yeah I was thinking about actually cutting up a 92mm Panaflo and replacing the Zalman fan if I did get Zalman.

 

[LtBlue14]

well i can say that i personally have mounted an slk-900U on a friend's computer with <A HREF="http://www.directron.com/sunon9.html" target="_new">this quiet sunon</A> and the performance amazed me. it really made me a believer in this heatsink. however, it's possible that at low CFM the zalman is better... though i don't really see scientifically why this would be true at all. i guess it's up to you, but i still feel the slk is of a better design

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this signature area is too dern short, no space to put your system specs

 

[Vince604]

Yeah I do like my slk-900U. Might just stick with that.
The Zalman I believe is more heavy then the slk-900u so I'm thinking the more copper the more surface area it covers, and it's spaced out so a fan can generally blow more air through it. But that's what I see. So I'll just see what others have in mind about which heatsink they'd prefer I guess.

 

[scottchen]

I read a review ones, where the SLK900U used an 80mm 25CFM fan compared with the CNPS7000-CU the SLK900U won by about 2C on full load on a Intel P4 2.6C overclocked to 3.2

-Intel PIV 2.4C @ 3.84G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800pro @ 490/780 -SB audigy -80G Maxtor Diamond Plus9 Ultra ATA-133 hdd -450 Enermax PSU

 

[Vince604]

Okay thanks. I think I may just get the SP-94. Thanks guys for your help.

 

[LtBlue14]

if you already have an slk-900U, why are you getting an sp-94? that's gonna be a really low margin of return on your money there...possibly no difference at all

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this signature area is too dern short, no space to put your system specs

 

[scottchen]

If you're using quiet fan then there's about a 3C difference on extreme overclocked full load. If you are using Delta or Tornado then there's no difference.

-Intel PIV 2.4C @ 3.84G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800pro @ 490/780 -SB audigy -80G Maxtor Diamond Plus9 Ultra ATA-133 hdd -450 Enermax PSU

 

[Crashman]

I'd go with the CNPS7000-AlCu because it performs very well with very moderate noise levels. Most higher level coolers relly on very powerfull, noisy fans to get better performance.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[scottchen]

Then again i don't think that's a worthy upgrade from SLK900U.

-Intel PIV 2.4C @ 3.84G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800pro @ 490/780 -SB audigy -80G Maxtor Diamond Plus9 Ultra ATA-133 hdd -450 Enermax PSU

 

[Crashman]

That would depend on your priorities probably. I doubt the SLK900U can produce better cooling at the same noise level.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[scottchen]

At the same airflow yes the SLK900U is still better.

-Intel PIV 2.4C @ 3.84G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800pro @ 490/780 -SB audigy -80G Maxtor Diamond Plus9 Ultra ATA-133 hdd -450 Enermax PSU

 

[Vince604]

Well pretend as if I were to buy a new heatsink. And say that I could modify the Zalman CNPS7000A-Cu heatsink to any 92 mm fan I wanted.

Or say that I used the exact same 92mm fan on both heatsinks. Which one would come out on top?

 

[scottchen]

Like i said before you can't saw up a fan and remount it properly on the CNPS7000A-CU, so the SLK900U would still be better. The review <A HREF="http://www.gamingin3d.com/articles/zalman_thermalright/" target="_new">here</A> Says that the SLK900U is slightly better using fans at the same CFM, and the SP94 is better than SLK900U by about 2-3C using low CFM fans, so the Thermalright products are still better.

-Intel PIV 2.4C @ 3.84G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800pro @ 490/780 -SB audigy -80G Maxtor Diamond Plus9 Ultra ATA-133 hdd -450 Enermax PSU

 

[addiarmadar]

Stick with your slk900u. That zalman cooler is a nightmare to install and not as sturdy as the slk900u.

F-DISK-Format-Reinstal DO DA!! DO DA!!

 

[Vince604]

Alright sticking with the SLK-900U. Thanks guys.

 

[Colt357TW]

With SP-94 i can use Papst to Panaflo to Vantec to Delta to no name brand fan, and as long they are 80/90/92 mm I know my CPU loaded temp is not going to break 55¢XC anytime soon. Now please, anyone, please show me how to put a fan inside Zalman's 7000A-Cu within 15 minutes or less without worry about bending fin/breaking fan casing and all that?

 

[scottchen]

Well you just have to hack up a 92mm fan, the stock fan on the CNPS7000A-Cu is attached by 2 screws, once you hacked up that 92mm fan you want to use you just epoxy it on the heatsink.

-Intel PIV 2.6C @ 3.51G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 270mhz 2.5-4-4-8 -Sapphire 9800pro @ 490/780 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU