I put on my environmental harzard suite, and ventured forth in to the attic of doom. There, lurking in the shadows of horror (tm), I found a mobo that I bought from some guy in Sweden. Hehe! It's a UMC chipset based board, model number UM8810PIAO, PCB revision 2.1. It's got a Voltage Regulator Module (VRM) attached to it, with an AMD P75 CPU. This CPU is labelled: AMD-X5-133ADW
I removed the two 16MB Fast Page Memory sticks (32MB total) from the FIC mobo, and put them in to this UMC board. I grabbed the nearest graphics card to hand (an S3 Virge 325 2MB PCI), and ran some benchies. As seen in the Speedsys screenshot, the memory bandwidth is better on this mobo, compared to the FIC mobo.
I ran "cache check 7", and this is what it said:
This machine seems to have both L1 and L2 cache. [reading]
L1 cache is 16KB-- 135.4 MB/s 7.7 ns/byte (548%) (315%) 3.9 clks
L2 cache is 256KB-- 42.9 MB/s 24.4 ns/byte (173%) (100%) 12.4 clks
Main memory speed -- 24.7 MB/s 42.4 ns/byte (100%) [reading] 21.6 clks
Effective RAM access time (read) is 169ns (a RAM bank is 4 bytes wide).
Effective RAM access time (write) is 124ns (a RAM bank is 4 bytes wide).
"AuthenticAMD" 486(5x86) Clocked at 133.4 Mhz. Cache ENABLED.
I then ran CTCM7, and it said:
Primary Cache (L1) : 16 KByte, 4way associative
Secondary Cache (L2) : 512 KByte, direct mapped
Code Cache (L1) : unified with Data
Main memory : 32 MByte, no Memory holes found
Cacheable Area L1 : 32 MByte, no noncacheabled Areas found
Cacheable Area L2 : 32 MByte, no noncacheabled Areas found
Pcpbench (Default mode 100, LFB) = 6.7
The next thing to do is to remove the AMD P75 CPU from the UMC board, and put it in to the FIC board. I will also adjust the FIC board's FSB from 33 to 40. (Can I go as high as 50?)