First post, by gloomkeep
- Rank
- Newbie
Greetings. It appears that two Intel DX4-100 writeback CPUs (&EW tag) I acquired from one source might be fake. Fake in that the L1 cache won't work in WB mode.
The performance and cpuid is identical to a standard non-WB DX4-100 (&E and Overdrive), so I guess someone went to the effort of re-engraving an &E? The engraved font looks weird, and the Intel logo looks splotchy (you need to zoom in to see).
I've included some doom benchmark results below, against other CPUs I tested at the same time - including a real &EW WB chip (which quotes the correct cpuid of 0490h, and has white text rather than engraving on the chip). Does anyone know if fakes are common?
# DOOM 1.9s TICKS, CPU
1842, &EW (confirmed real, acquired from a different source)
2206, &E
2207, &E
2207, ODP100
2207, &EW (fake #1)
2208, &EW (fake #2)
2208, ODPR100