Which fan to o/c PIII 600?

[Jake3315]

I just put a PIII 600 retail box cpu (Intel heatsink and fan attached) into my Asus P2B mobo with 128 100mhz RAM and G400 Max running Win98. I can only adjust FSB, not voltage.

It runs for a little while at 112FSB (672mhz), then freezes. It runs okay at 600mhz, so I believe this is a heat problem. The computer BIOS only recognized a 400mhz cpu when I tried 105FSB. The Asus P2B also gives me a 110FSB option which I have not tried yet. I really want to reach at least 112FSB overclocking if I can because Jane's WW2F and other sims need the juice for decent viewing resolutions.

Is this a cooling problem? If so, what fan do you recommend to fix this problem that fits into a normal ATX set-up and is solid and cost-effective? I'm not a cooling expert, so it needs to be something a regular person can install.

Thanks for any help.

Jake

[Brent]

The P3 600 is already on the ragged edge of that design series. I doubt that even with voltage and cooling adjustments, you will get much more out of it.

[Guyver]

With a Gigabyte BX2000 and an open case, I was able to push my PIII-600 to 672 and keep it there. Get the proper cooling and you should be able to as well. I believe that many people like the Alpha cooler. Check a couple of older threads and you should be able to find it's reference.

Guyv

[Brian R.]

I am running my PIII 600 stable at 672 with an Alpha P3-125.
See:
http://2cooltek.safeshopper.com/5/cat5.htm?6318


With the Alpha, I used two YS Tech 60-mm x 25-mm fans.
See:
http://2cooltek.safeshopper.com/4/18.htm?87744

The catch is, for me, I have to have 2.40 V for stability. Lower voltage or poorer heatsink and I fail. You may not need the higher voltage, depending on the chip you have. As far as I can tell, this setup is perfectly stable for me.


------------------
Win98SE, 600 PIII @672 MHz (@2.40 V) w/Alpha P3-125 heatsink/fan, ABIT BX6-2 MB, 128 MB Siemens PC100 SDRAM, G400 MAX, Diamond V2 SLI, Diamond MX300 with Senheiser HD-600 headphones and Sennheiser DSP360 Dolby processor, CL Dxr3 Decoder, Adaptec AHA2940 w/uw SCSI, IBM 9ZX 9.1GB 10K UW SCSI HD, WDE 4360 4.3GB 7.2k UW SCSI HD, modified Supermicro SC750A case with PCP&C Silencer 275W PS, and a partridge in a pear tree.

[birdy]

a tip which i have found quite efficient is to add a fan mounted on a radio strip that directs air from the front fan (which sucks in to the case of course) towards the cpu area. I did this because i found that the positioning of the standard case fans seems to just drag air in at the front on the left and take it out of the back on the left. The cpu is mounted on the right so there seemed to be still air around the cpu. So in effect the cpu was using the same air again and again and not really cooling down very much.

another good tip is to move to alaska and keep the computer in the garden with the case open. I reckon you'll get 800mhz in the winter!

[Brent]

BrianR,
Is your computer on crack? What is a PCP&C silencer? Seriously, if it is a way of quietening a PC, I would be very interested.

[Manex]

I agree with Brian R. about the Alpha P3-125 heatsink. Since you can't adjust your core voltage you might need to take more extreme measures depending on how serious you are about jacking up the clock speed. I just ordered one of these babies from Sysop Solutions ( you have to scroll about half-way throught the article before they actually show the heatsink)...

http://www.sysopsolutions.com/overcl..._celeron_3.cfm

Basically, it's an Alpha matched with dual 67 watt Peltier units, 2 aluminum cold plates and a copper-beryllium hot plate. I plan on using this with my Celeron and then my P3 when I finally get around to ordering it. I'd overclock my toaster if I could! Anyway, I'd go for the Alpha if I were you, every review I have come across praises this heatsink...

Good Luck!


------------------
ABIT BH-6, Celeron 300A @450, 128MB RAM, IBM Deskstar 10GXP, Matrox Millenium G200 16MB, Sound Blaster Live!, D-LINK 10/100 Ethernet, US Robotics 56K modem, Adaptec 2940UW, Plextor 32X CDROM, Plextor 4X/12X CD-R, SCSI Zip Drive, Motorola Cybersurfr Cable Modem

[This message has been edited by Manex (edited 12 November 1999).]

[This message has been edited by Manex (edited 12 November 1999).]

[This message has been edited by Manex (edited 12 November 1999).]

[Brian R.]

Brent - PC Power and Cooling http://www.pcpowercooling.com/produc...x_pwrsppls.htm

I've been told, has the best power supplies you can buy. The Silencer is a very quiet power supply. The 300-W ps that came with my case was a little loud and I am in the process of quieting my system as much as possible.

Also, I have never caught it smoking any illegal substances.

[Zypher]

If you want a REALLY quiet case, still use a quiet powerupply, but water-block cool the cpu. Then you probably won't need any case fans unless oyu have some high rpm HDs, and some vidcards have fans on them.

Anyway, not to be rude but...shoulda either waited (grab 600e soon for same price...run at 800) or bought slower (450-550) and saved $$$, or spent $$$ on different component. Buying the top end cpu model always seems to work out the worst.

IIRC, You can do voltage with nail polish or whatever and certain slot1 pins...

If you want to jack the retail hs+fan, a good replacement combo is the Alpha p3-125.

[Brian R.]

There is an advantage to running a oc's P3 600 over an oc'd P3 450, other than 50-100 MHz. To run a 450 at 600 Mhz, or even 581 MHz, you have to run a 1:4 PCi divider. This is a slower PCI bus than the 1:3 PCI divider at 112 MHz. Everything else being equal, the P3 600 is faster, both in PCI bus speed and absolute cpu speed. I don't like running a 129 MHz or 133 MHz fsb on my board.

[This message has been edited by Brian R. (edited 14 November 1999).]

[paulcs]

I'm with Brian on this one. I really like running this fast with my PCI bus at spec. My G400 likes it as well.

Paul
paulcs@flashcom.net

[ALBPM]

I agree too, 112 is a nice comfortable FSB speed to run at.

Also, I just replaced the 300W power supply that came with my Addtronics case. I took a few Forum members advice and got a 350W ATX power supply from PC Power & Cooling. I have no more problems with lockups and my case temp is around 6 degF lower than with the old power supply.

Paul

------------------
P3-616(112x5.5), ABIT BE6, 256MB PC100, MILL G400 MAX-32MB on BNC, Quantum3D Obsidian2 X-24 on D-sub, IBM Deskstars 18GB ATA/66 and 13.5GB ATA/66, 21"Trinitron, SCSI CDR/RW, SCSI ZIP,SB Live!Value,USR Voice Faxmodem Pro(USB Ext),Epson 1520 printer,Umax1200S scanner,WN98 all in a Addtronics 7896A case and a (Not so Messy Desk) ;-P