Where to buy 80mhz 68060 cpu with full fpu and mmu?

[PG]

Upgrading a 040 card is not cheap, but you are missing the point.
With a upgraded 040 you get the best cpu available for the Amiga: MC68060RC50 with mask 1E41J.
Its not really fair to compare a XC68060 accelerator card with a card with this cpu.

[x56h34]

PG wrote:
Upgrading a 040 card is not cheap, but you are missing the point.
With a upgraded 040 you get the best cpu available for the Amiga: MC68060RC50 with mask 1E41J.
Its not really fair to compare a XC68060 accelerator card with a card with this cpu.

Other than running cooler, what else is there to the 1E41J mask compared to the standard 68060 stuff at the same clock speed? Performance wise it's all the same thing.

[alexh]

Other than running cooler, what else is there to the 1E41J mask compared to the standard 68060 stuff at the same clock speed?

Just some bug fixes in the floating point unit.

But it is the running cooler which is THE big thing. The new mask layout makes the chip produce a fraction of the heat at the same clock frequency. It also has improved timing margins than the XC. This means the chip will operate much cooler and much more stable at higher clock frequencies.

However I must point out that the accelerator board design is just as an important factor in running stable at higher clock frequencies as the CPU.

[x56h34]

alexh wrote:

Just some bug fixes in the floating point unit.

But it is the running cooler which is THE big thing. The new mask layout makes the chip produce a fraction of the heat at the same clock frequency. It also has improved timing margins than the XC. This means the chip will operate much cooler and much more stable at higher clock frequencies.

I have three MC68060RC50 (1E41J) CPUs in different accelerator cards for Amiga and they all seem to be only slightly warm to the touch, when running that is.

The only time this mask gets a bit hot (mind you you can still hold your finger on the chip without getting burned) is if I connect the particular BPPC card to the Grex1200, but I guess that's normal as the entire design and power flow in this case is not perfect. :-)

[stopthegop]

PG:
On a similar subject, are you able to add a M604E PPC chip to a Cyberstorm MKIII, and set the jumpers accordingly?  If not, do you know of any firm that is qualified to do this work?