Testing 333MHz IBM 604ev 288in PGA module with G3 carrier for a PCI Mac

[obsolete]

Another four PPC604E3DBCG350E are on the way on donor CPU cards (IBM dual CPU 332MHz slot-module with 2x256k inline cache).
These are 58€ for one card = $28ppp for the cpu itself (desoldering and cleaning is easy)

I recently bought another 375 MHz rated 604e3 with ZIF carrier (from an RS6000 p43 system).
The processor version is 10,1 like the Apple Mach5 CPUs and is visually identical 604e3/375, i bought earlier, which is a 9,31 version.

The 10,1 version will identify as a 604ev while the 9,31 version will identify as a 604e. Both CPUs are nearly identical in terms of speed. The only difference is that i get about 10% higher scores in some floating point calculations with the 9,31 version. (no cache/Kansas board)

I have also found that the 10,1 version does not play nicely with older systems (TNT for example) while the 9,31 works without a problem. Maybe the 10,1 604ev has some changes to the default values in the registers or something. I could use a Mach5-card that i modified with a 9,31 604e3 with a TNT board if i had the Kansas Rom installed. The 10,1 604ev Mach5 card would not work in the older machines, even with the Kansas Rom.

@stynx I recently found a decent deal on a pair of the same IBM dual CPU cards with 350MHz 604ev chips, so I bought them to play around with:

Do you remember whether the CPUs you got from these cards were version 10,1 or 9,31? I hope mine are 9,31 so I can use them on Kansas CPU cards with a Kansas ROM in my 7600. All four of my CPUs are labeled identically on the heat spreader:

 

[stynx]

>> Do you remember whether the CPUs you got from these cards were version 10,1 or 9,31?

They were the older CPU ID as far as I know. The IBM chips from the RS6000 dual CPU card were compatible with the x500 PCI PMac rom. The 10,1 need the Kanas Rom to work. All Motorola 604ev/604r are 10,1 while IBM produced both IDs.
The IBM 604ev 350 from the dual CPU card were easily overclockable to 400 MHz and even 420 were possible. The limiting factor is the FSB since the cpu only supports up to 7x (or 7.5x? … I forgot).