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This used to be my the main server, consisting of:
I had some concerns that this would not function well with Linux; Adaptec has been known to make board and BIOS changes that have resulted in incompatibilities. No problems; apparently the batch that IBM acquired for use with this line of computers is compatible even with older AHA2940 drivers.
Which, as an on-the-motherboard component, fried itself in a power surge, replaced by a NetGear 310TX.
With, initially, only 64MB of RAM to work with, it probably represents one of the slowest R/3 systems on Planet Earth. It really wants a lot more RAM than that...
The IBM IntelliStation Z Pro Replacement Parts List noted that it uses "EDO ECC DIMMs." The model number seems to be 6899... See also
PR440FX motherboard Supported Processors, System Board Memory - PC 300/700 and IntelliStation Series, 6899 - PentiumŪ Pro 200MHz System Board, 6588 and IntelliStation - 6888, 6898, 6899 Models 6899 - PentiumŪ Pro 200MHz Parts Listing, and 5V to 3.52V VRM-Connector
Kurt Godel set up a representation of a "general theorem construction system," the propositional calculus and provable manipulations of expressions using multiples and powers of prime numbers. From this, he established that not all statements that can be represented in the Propositional Calculus can be proven to be correct by "provably correct manipulations."
This proved that Bertrand Russell's attempt to build a comprehensive guide to the theory of mathematics, Principia Mathematica, was to be a project doomed to failure. You can't prove everything in mathematics.
This box has been running Debian since about 2001, and has been my firewall throughout that time.