[Irinikus]

This Machine is fitted with the 450MHZ G3 CPU, the fastest that was officially released for this machine:





The G3 400MHz module looked like this:



Notice the difference in the cache chips.

There was an aftermarket chip released running @ 1GHz (PowerLogix PCIGX10001 PowerForce 750GX G3/1GHz (1000MHz)) Which featured on-die cache



It was based on this chip:

PowerPC 750GX
750GX (codenamed Gobi), revealed in 2004, was a 7xx processor from IBM. It has an on-die 1 MB L2 cache, a top frequency of 1.1 GHz, and support for bus speeds up to 200 MHz among other enhancements compared to 750FX. It is manufactured using a 0.13 μm process with copper interconnects, low-K dielectric, and silicon on insulator technology. The 750GX has 44 million transistors, a die size of 52 mm2 and consumes less than 9 W at 1 GHz at typical loads.

I just installed 1GB of RAM into the machine and take note of the fact that there is now no virtual memory usage: (It was initially using 435MB, which was considerable!)



This is how it looked with 256MB of memory installed for comparative purposes:



So this little upgrade within itself should improve system performance!

The system memory upgrade has marginally improved the system drive performance: (This is still the standard SCSI setup that the machine came with)



This was the original drive performance with 256MB of Ram installed: