68060 100 mhz or more?

[alex68]

The 68060 can reach more than 100 MHz, or only 75? Greetings

[ajk]

You can overclock certain Amiga 060 accelerators to around 100-105 MHz.

[eXeler0]

It's safe to say that only revision 6 will reach such speeds. If you are lucky...

[delshay]

I have a few 68060, but it just cross my thought, could their be speed binned.

Overclocking MC68060 RC50 & MC68060 RC60 both E41J seems to overclock the same, which make me think limiting factor must be the accelerator card.

To gain big jump in performance, I built my own memory (SIMM) then lowered the latency in the accelerate card firmware.

I think new hardware should have this feature, as it is useful to adjust memory timing.

It's all about flexibility if something needs to be changed in the future.

[eXeler0]

Originally Posted by delshay

I have a few 68060, but it just cross my thought, could their be speed binned.

Overclocking MC68060 RC50 & MC68060 RC60 both E41J seems to overclock the same, which make me think limiting factor must be the accelerator card.

To gain big jump in performance, I built my own memory (SIMM) then lowered the latency in the accelerate card firmware.

I think new hardware should have this feature, as it is useful to adjust memory timing.

It's all about flexibility if something needs to be changed in the future.

I have a rev6 in an Apollo 1260 and it only has a passive heatsink so I only use a moderate over clock, 66MHz. Then one day I found some 72MHz oscillators but I only got a black screen. Can't really tell if it was due to faulty oscillator or if it was some other memory timing issue, didn't dive into it. A lot of ppl say that for speeds above ~75MHz you need active cooling. Didn't test that theory either.

[delshay]

There are a few Apollo cards that have reach just over 100Mhz. Its already been done. Ensure you have a very good power supply & card is near to 5v as possible on Apollo card. Ensure you also have the right 68060 for 75Mhz+.

But I think it can operate faster at a lower clock speed if timing to dram can be set at it lowest.

I have no idea what the timing are of Apollo cards firmware, and it could already be set at it's fastest.

I have a few 32Mb Simm, I will custom speed them, just to see if I can get below 40ns.

Test here have also shown some older 68060 can clock higher, but voltage needs to be raised to 3.45v. I have forgotten which revision this works on, but if I get a chance I will test again.

[jack-3d]

[alex68]

Hi ppc 604e manufactured motorola Or the 68060 was the last made by Motorola mhz frequencies were reached on a Motorola processor

[ajk]

Is that a question or statement?

[alex68]

question

[eXeler0]

Originally Posted by alex68

question

Can't speak for others but I did not quite understand what you are asking. the PPC 604e is much newer than 060 and was manufactured at much higher frequencies..

[alex68]

Ppc 604e manufacture motorola?o intel?

[mech]

Originally Posted by alex68

Ppc 604e manufacture motorola?o intel?

motorola and ibm
max freq. offered for 604e was 400

[alex68]

There is a 68060 to work beyond 100 mhz?

[pandy71]

Originally Posted by alex68

There is a 68060 to work beyond 100 mhz?

AFAIR every newer MC68k family member was capable to work from DC - minimum frequency was required only for older units made in different technology.

[alex68]

Motorola only manufactured the 68000 and 88000 series processors or fabricate more than 100 mhz I say this because the 68060 is 75 mhz.

[ajk]

Look, it is very difficult to understand what you are asking. Are you using some kind of automatic translation system which perhaps alters the message?

The answer to your original post is that a 68060 can, in practice, reach at least 100-105 MHz - based on actual experiments that have been made.

PowerPC processors are entirely different and their clock frequency ratings have nothing to do with the 68k line.

[gulliver]

The fastest speed I ever saw a 68060 running was on a Czubatech CT63 Atari Falcon accelerator at 108 Mhz. The user who had it running, told me that only some few random cpus with E41J masks could arrive at that speed. And of course it had a nice big PC like cooler on top of it with a beefy PSU.

[alex68]

I mean if there was a motorola able to reach 200 mhz? The ppc is motorola or another manufacturer? Motorola 68000 family only fabricate and 88000? Greetings

[ajk]

Well, neither the 68000 nor 88000 ever reached 200 MHz.

PowerPC was designed by IBM and Motorola together and as far as I know, it was IBM and later Freescale that manufactured the actual chips, although some were branded Motorola. So there probably was a Motorola manufactured chip at 200 MHz at some point, but I can't tell for certain.

Why is this important?

Edit: Wikipedia would suggest that Motorola manufactured the 604ev, which could reach 400MHz

https://en.wikipedia.org/wiki/PowerP...ev_.22Mach5.22