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System specs
| Device | Manufacturer/Model | Specifications |
| Central Processing Unit | intel Pentium Pro SL22T | 200MHz, 256KB internal cache |
| CPU Heat Sink | IERC P601CB | Thermal resistance = 0.6 |
| CPU Riser Card | ASUS C-P6S1 | Socket 8 to Slot 1 converter |
| Mainboard | ASUS P2L97-S rev1.5 | BIOS rev1.02 |
| RAM | 64MB Hyundai 10ns SDRAM | 8-chip, EPROM |
| Harddisk | Quantum Atlas II | Ultra Wide SCSI-3, 4.55GB, 7200rpm |
| Harddisk controller | On-Board Adaptec 7880 | Ultra Wide SCSI-3 |
| Graphics Card | ASUS AGP-V3000 3Dexplorer | Riva 128, 4MB 100MHz SGRAM |
| Sound Card | Guillemot Maxi Gamer 64, Dynamic 3D | Dream DSP, 6MB RAM |
| CD-ROM | NEC | 16speed SCSI-2 |
| Case | In-Win IW-H500 | ATX desktop, 235W power supply, extra case fan |
| Keyboard | Tulip | Made in Holland! |
| Mouse | Logitech MouseMan Pro | Cordless |
The first Pentium II mainboards used the 440FX Natoma chipset, which had served the Pentium Pro for years. So, if a Pentium II works with a Pentium Pro chipset then why not the other way around? This kept running trough my mind until an article appeared on the TweakIt site in which a Pentium Pro CPU was running on an Asus P2L97. So next day I ordered the Asus C-P6S1 (Converter-Pentium6Slot1?) which was originally intended for use with the Asus KN-97X 440FX-based board. At first attempt the system wouldn't boot, meaning I had to plug in a Pentium II to flash it with another BIOS before it would run again. Up until now the only BIOS revision that will boot my system succesfully is 1.02 (the first one), and it reports my CPU as a Pentium II-S which is because the BIOS only recognizes Pentium II CPU ID's, and therefore can't upload the proper CPU patch.
CPU cooling is provided by my trusty IERC P601, combined with a big low-profile Titan fan, which because of the direction of the heat sink's fans also cools the 440LX chip. Some articles in the newsgroups have reported on the 440LX getting very hot.. well, not on mine ;-) I replaced the power supply fan with an ultra-high quality Compaq SilentCool fan which has four wires of which I don't know what some of them are for, and connected them to the "noise killer" circuitry inside the power supply which makes the fan steadily increase it's speeds. A third fan is mounted at the front of the In-Win desktop case to distract the generated hot air. With this cooling system I have been able to run my system at 250MHz (83x3) for some time, but I run it at 233Mhz now because a Pentium Pro is still a very expensive CPU.
