Swiftech MC462 problems


Junior Member
Feb 22, 2001
I just received my Swiftech MC462 with Sunon 80mm fan
(KD1208PTB2) from Coolerguys.

This is my system:
* AMD Athlon Thunderbird 1.2Ghz 266 FSB
* ArticSilver 2 Compound
* Enermax Whisper 330W Power Supply EG351P-VE(FC)
* Crucial 512M PC133 DRAM CAS2
* Asus A7V133
* IBM Deskstar 45GB 7200RPM
* 3Com 3C905TX NIC
* Elsa Gladiac Geforce2 GTS 32M DDR
* Black Hydraulic Case
* Black floppy drive
* Black IBM keyboard
* Creative Soundblaster Live X-Gamer
* Ricoh 9120A CDRW/DVD Combo Drive
* Front and rear Panaflow case fans

I have overclocked my system to 1400Mhz (10x multiplier, 140Mhz FSB). After reading the article on Overclockers.com about CPU markings today I see that I have one of the "better" processors with "AXIA" marking.

The problem is however, that the Swiftech heat sink together with the Sunon fan is not adequately cooling the CPU. Motherboard Monitor indicates that the temperature between 54-57 degrees. My Alpha PAL with Sanyo Denki cooled my system to about 52-53 degrees.

I don't get it. Any thoughts? I really don't want to have to use a monster Delta fan. The Sunon is relatively quiet at 33dba moving 35 CFM of Air.


Senior member
Dec 28, 2000
Wow! I'm surprised. The delta that comes with it produces a minimum of 41 cfm at 36dba. Anandtech said even at that rate of airflow, it cooled better than anything else. So you would think that 35cfm would do the job.
OTOH, maybe you should try something that flows more air. I was thinking of buying a swiftech 462 and mounting a high output Adda on it. Check this baby out; link.

I was thinking that you could hook the rheostat up like they did with the delta and drop it down to 40cfm. Check the noise difference and see how it cools. It's really not that loud at full speed. 40dba@50cfm. Something to think about until the big delta gets back in stock.


Nov 11, 1999
Hhmmmm...it really should do better than that, but there are a lot of variables. The contact between the thermal probe and the back of the processor may be different, or contact between the sink and the core, thermal compound application and type. Airflow direction may make a difference. Check the basics.

Readings from both the bios and MBM are notoriously inaccurate. Leave the machine off for a couple of hours, boot directly to the bios & check the temp immediately- it should be near ambient, and the internal case temp should be at ambient temp. Use these readings as a calibration reference- things may not be as bad as they seem.