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Cak38 vs. Pep66

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W

William

Guest
well according to the benchies here at oc.com, the cak is getting results near that of water cooling, seems kinda obvious which is better. Now, for an all copper pep66........
 

Fro

Registered
Joined
Mar 14, 2001
i definitely wanna see a copper alpha hsf, my pep66 just kicks soooo much ***. globalwin released one, so you know alpha cant be too far behind
 

WillysNut

Senior Jeep Nut
Joined
Apr 18, 2001
Location
NY, USA
I'm running a very hot, cBO, OEM PIII 850. I was using a standard heat sink w/ a large fan and I could not get the chip to run 995.

Ordered a CAK38, got it overnighted from 2CookTek, and let me tell you, IT ROCKS! I'm running 1003 currently at 1.85v. After about 45min of Prime95, I'm running 32c in a room that's 29c. Very impresive. 1003 is totally stable w/ 1.85v.

I can run 1053 @ 1.95v but I want to burn it in @ 1003 for a while and then try faster @ lower voltage. The Delta 38cfm fan blows onto the sink and is LOUD but it does it's job very well.

The CAK is heavy and machined well for a substance that's very hard to work w/. I haven't run any comparasions but I'm at a Gig so that CAK kicks *** as far as I'm concerned. CAK, CAK, CAK (sorry, I'm biased!!)
 

jeff_harrison_344

Senior Member
Joined
Jan 23, 2001
Hey thats where I ordered mine from to Tweak.

Yeah, let us know ALL the details from installation to looks to noise to performance.
 

klosters64a

Senior Member
Joined
Dec 17, 2000
Location
Seattle, Wa
If you can, please post if an 80mm fan guard can be mounted on top of the CAK-38, using the screw-holes for a 60mm fan. Doing this usually results in an 80mm that doesn't sit squarely on top of the HS. Such is life. I'm considering a CAK-38 for a S370 mainboard. I really want to avoid listening to a Delta 38. Seven months was a loong time!

Thanks!
 

kkatz

New Member
Joined
Mar 28, 2001
WillysNut (May 12, 2001 01:27 p.m.):
I'm running a very hot, cBO, OEM PIII 850. I was using a standard heat sink w/ a large fan and I could not get the chip to run 995.

Ordered a CAK38, got it overnighted from 2CookTek, and let me tell you, IT ROCKS! I'm running 1003 currently at 1.85v. After about 45min of Prime95, I'm running 32c in a room that's 29c. Very impresive. 1003 is totally stable w/ 1.85v.

I can run 1053 @ 1.95v but I want to burn it in @ 1003 for a while and then try faster @ lower voltage. The Delta 38cfm fan blows onto the sink and is LOUD but it does it's job very well.

The CAK is heavy and machined well for a substance that's very hard to work w/. I haven't run any comparasions but I'm at a Gig so that CAK kicks *** as far as I'm concerned. CAK, CAK, CAK (sorry, I'm biased!!)
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You mean only 32C WHILE running Prime95? Or after you ended the program? By the way, Prime95 is ****. Test your temps with CPUBurn. Run burnp6.exe and post your results then. I own a cc0 Celeron 800. I use a GlobalWin FKP32 and I run at 1053 (8x131,5) @ 1,95V. While running 3DMark or Prime95 or any other **** the temp stays below 49C. But while running CPUBurn... 57C. System Temp : 31C. CPUBurn is a true burn test.
By the way. From 34C when idle to 49C while running most of the games and benchmarks and burn tests, is a very big margin. Is there something wrong with my cooling?
 

WillysNut

Senior Jeep Nut
Joined
Apr 18, 2001
Location
NY, USA
Okay...here we go...Picked up my new case. Installed the same two fans. One at the front of the case, down low to bring in fresh air. The other, exahust, at the back of the case....get this....right next to and just behind the CAK38.

The exahust comming through the sink blows directly towards the exahust fan and out the chassis. :) I downloaded CPUBurn as suggested, checked my idle temps (see question below) from the BIOS and it jumps between 27 and 30c for the processor, stays steady at 24c for the board temp.

I adjusted MBM 4 to the correct idle temp. and I'm running 31c w/ CPUIdle running. As I type, CPUBurn is running in the background and I'm at 38-40c load. Not too damn bad!! I am however seeing spikes up to 48c from time to time.

The one question I have:
Is idle in the BIOS the same as idle at the Windows desktop. What I mean is...does CPUIdle create a lower idle temp when running or does that usually stay constant?
 

kkatz

New Member
Joined
Mar 28, 2001
See that with CPUBurn the temp jumped 8C?
Idle in Windows is really idle. If your M/B supports ACPI (most do) there are halt commands executed by the CPU when it is not used so the temp drops drasticly. You should see 5-10C difference between BIOS and Windows idle temps. All this IF ACPI is active. You can see this at the device manager / system devices. If you see there entries containing ACPI then it is active. Your temps are very low indeed. Is it because of the excellent CAK38? Do you think I should change my FKP32?