Overclocking Ride

Add Your Comments

This is the story of how my computer has been upgraded step-by-step to being a cheap 600 MHz gaming system!

In April, I went to the local computer store and picked up my new computer. System specs: Celeron 366, Jet ZX ppga mobo with built-in SB PCI64, 64mb PC100, 8mb i740 video card, 4.3Gig HD and a 15inch monitor. After a few weeks I decided to try to overclock it a little. I upped the bus speed in the bios to 75 MHz and rebooted; the system ran at 413 MHz just fine in the Jet mobo but couldn´t run 458 MHz for more than a minute, since the Jet couldn´t change voltage for the cpu.

When the summer came and I began reading about the new “KK” bios that everyone thought was for the good old Abit BH6, I began looking into a new mobo. When it finally got known that Abit had made a new BH6 called BH6 r1.1, I started to look for a store here in Sweden who could get me one. One of my local stores ordered one for me and when they got it, i went to them to pick it up. I bought the new mobo, a generic slocket and a TeraSound A3D soundcard and went home and installed it. After 2 reboots, all my new hardware was detected and installed.

I began tweaking and found the old week 50 Celeron 366 OEM to be stable at 458 MHz at 2,2V with a cheapo heatsink. A month after this, more and more people reported having C366s that did 550 MHz. This sounded so interesting that I called the store back and asked for a 366. He had a week 17 retail in store unit that he sold cheap to me. This cpu was a big improvement. It did 523 MHz at 2,2V just fine with the retail cooler.

Then something occured to me: My case wasn´t cooled at all! I borrowed a hole-saw and cut two 3 inch holes in my case. One in the side and one in the top. I put two 3 inch case fans with nice fan guards on them. The side fan was set take cool air in and the top one to take the hot air out. This lowered my mobo temp from 40C to a very nice 31C!

At this time, a friend of mine moved to Oslo in Norway and when I found that 3DFXCool had an office in Norway, I kindly asked my friend to pick up a GlobalWin FDP32 for me. I was really impressed when I got the FDP32. I slapped it on the C366 and it pushed right up to 550 MHz @ 2,3V! At this time I felt that I had reached my goal to get 550!

A few weeks after that, I picked up an MSI slocket with hopes that it would be more stable than my generic crap. After running the first night on the MSI I was very happy! I now had a stable 550 MHz system running at 2,2V and would run Windows at 578 MHz @ 2,3V too! The only thing that needed to be upgraded now was the video card! No way I´m gonna use an 8mb i740 card in a C366@550 system! I called the local store and they had a great deal on the Leadtek TNT2 m64 32mb cards!

I picked up one of those and when i got it installed, my system felt complete for the first time ever!

If you haven´t followed all the details, this was now my system specs:

  • Abit BH6 r1.1
  • Celeron 366 @ 550 2,2V on MSI slocket cooled by FDP32
  • 64Mb Generic PC100
  • Leadtek TNT2 m64 32Mb
  • 4.3gig Fujutsi HD
  • 40x CD
  • 2x/4x SCSI CD-R with Advansys SCSI card
  • TeraSound A3D

Since that time, mid October, I didn´t upgrade anything until the week before Christmas. I worked at a local computer store for 2 weeks and one day the boss told me to check some PSUs to see if they were working. I quickly grabbed an old BH6, 64mb ram, a 4mb video card, and a C400 on a slocket that they used for tests like this.

When I was done testing, I thought of testing a POST at 600 MHz. It posted fine but couldn´t boot since I didn´t have a HD connected. I tested if it would post at 1,9V and it did. Later that day I told the boss that I was thinking of upgrading my computer at home and asked if I could borrow the C400 overnight! The rest is history!

This unit is truly great! It´s a week 41 Malay OEM CPU (although I got a retail sink 🙂 read below).

I tried it with the retail heatsink at first (a retail sink was attached to the slocket although this is an OEM chip) and before switching out the C366, I forgot to lower the bus speed! Thanks to this, the C400 booted at 600 MHz on its first boot!

I was surprised to see this chip booting Win98 at 2,0V! However, after starting up Midtown Madness it kicked out to Windows after playing for a few seconds. Same thing at 2,05V. At this time I got bored so I slapped the FDP32 on it and upped to 2,1V and it was fully stable!

I really tried to get the system to crash, but it couldn´t be done, so I tried 630 MHz @ 2,3V. It booted Win98 just fine but locked up at the second test in 3dmarks99 Max. I set it down to 600 MHz @ 2,1V again and was very happy! Needless to say I bought this cpu (very cheaply I might add!) the next day I was still figuring out how I could get it to 630 MHz.

Last week I checked the chip´s slug and found that it was perfectly FLAT! That´s something I´ve never seen before! I lapped the chip anyway to a full mirror copper finish using 280 -> 1000 -> 1500 grit sandpaper. I installed it again and it now took me one hour to get the system to lock up at 630 MHz! Quite an improvement just for lapping a flat slug!

Yesterday, I also bought and modified a cheap indoor outdoor thermometer (look at Benchtest.com for the mod!) so that I now can read the slug temp! It was around 36-37C at 600 MHz 2,1V. And then today I recieved two 5g tubes of silver thermal compound and after cleaning the Celeron and putting the silver grease on it, my CPU temp went down by 3C to 34C!!

I couldn´t get it stable at 630 MHz but it is running 3DMarks99 Max looped at 600 MHz @ 2,0V with 33.5C slug temp as I write this and has been doing so for 2hours now.

So there you have it! Feel free to Email me or icq me #37407726.

Final system specs:

  • Abit BH6 r1.1
  • Celeron 400 @ 600 2,0V on MSI slocket with FDP32 and silver thermal grease
  • 64Mb Generic PC100
  • Leadtek TNT2 m64 32Mb
  • 4.3gig Fujutsi HD
  • 40x CD
  • 2x/4x SCSI CD-R with Advansys SCSI card
  • TeraSound A3D

Erik Johansson


Leave a Reply

Your email address will not be published. Required fields are marked *