I'd think IPC had asked Mitac to slightly modify it. The reason I say this is because I recall the original Mitac manual stating there should be 64MB onboard RAM. So, the best explanation I can think of is that IPC (which btw, is from Austria, not Russia, as the rumors were circulating - makes sense since half if not most of their machines are exactly rebadged Gericom, Advent and Medion stuff.) asked Mitac to use bigger chips that would result in 128MB of onboard memory.
That, and also, the original Mitac specs say that maximum CPU speed is 800MHz, but as the IPC specs show, the BIOS itself recognizes higher Coppermine CPUs just fine (no Tualatins as far as I can see, chipset doesn't support it probably, despite the T marking after the model number. And who in their right mind would run a Tualatin on a SiS 630 anyways?).
All in all, it's a neat machine. WinME runs almost perfectly (NFS5 throws occasional "cannot read file x" errors but they can be ignored, most of the times.). Can't for the life of me to get "Beetle Ju" (it's a rather obscure game as well, unless most of you know Alawar, the authors of the said game) to run under 9x - I get a WRAPPER.DLL missing export in KERNEL32.DLL error everytime I try to play it.
"Enter at your own peril, past the bolted door..."
Main PC: i5 3470, GB B75M-D3H, 16GB RAM, 2x1TB
98SE : P3 650, Soyo SY-6BA+IV, 384MB RAM, 80GB