Overclocking the 68060 cpu

[Corrie]

Hi all,

I know that overclocking has been discussed many times before, however I would like to get feedback from everyone who has overclocked the 68060 cpu. I am running a Cyberstorm MKIII and I have successfully overclocked it to 66Mhz without any problems. I would like to try for something higher 70, 75, 80Mhz. Can I get some feedback from people who have clocked their 68060 to more then 66Mhz, please tell me where the limits seem to be for the 68060 cpu.

Could those who have a 68060 clocked higher then 66Mhz, please send me a syspeed mod to user100@ozemail.com.au I would much appreciate it. I would like to be able to compare the 66Mhz to the higher speeds. Could the fellow who has his 68060 clocked to 80Mhz PLEASE email me a syspeed mod, I would love to see the results. Overall I am looking to find out the limits of the 68060 cpu, whether it be ram, software etc, I would like to get people's opinions......

[Brian]

Ehm.. I'm pritty sure if you clock it to over 70 that the internal FPU will start to mallfunction. I'm also pritty sure that it's of interest to ppl to know if you got an 060/50, 060/50(A) or 060/60 version CPU also.

[Alkemyst]

by Brian on 2003/7/26 7:46:14

Ehm.. I'm pritty sure if you clock it to over 70 that the internal FPU will start to mallfunction. I'm also pritty sure that it's of interest to ppl to know if you got an 060/50, 060/50(A) or 060/60 version CPU also.

060/50(A) here! Apollo-060/66 clocked to 80Mhz FPU, MMU, SCSI kit all working with out problems for over 6 years. :-D

[ikir]

I also want to overclock my Blizzard 060/50.

Wow! Alkemyst, ultra-super Amiga Classic config!!!!! How software runs on your "monsters"? Have you tried Bliztquake with litfiles (ex gl-quake)?

[Alkemyst]

by ikir on 2003/7/26 10:41:53

I also want to overclock my Blizzard 060/50.

Wow! Alkemyst, ultra-super Amiga Classic config!!!!! How software runs on your "monsters"? Have you tried Bliztquake with litfiles (ex gl-quake)?

Yes :-D

[ikir]

How does it runs? 8-)  :-)
fps?

@ Blizzard 060 user:
Do you use cyberpatcher or updated 060 libraries?

[Alkemyst]

by ikir on 2003/7/26 11:36:37

How does it runs?
fps?

@ Blizzard 060 user:
Do you use cyberpatcher or updated 060 libraries?

FPS? its been a while since i have played so i cant remember but its very playable.

I use RemApollo & RemApollo patched 060 libs and OxyPatcher v3.14

[Brian]

What kind of cooling do you have on that beast? My B1260 got a nice lil fan blowing air on it + legs to lift up my A1200 about 1cm and sure I'm temted to overclock it to perhaps 55-60Mhz with this mod. But to go to 80Mhz you need some serious cooling and a tower I presume. :-D

[Alkemyst]

by Brian on 2003/7/26 21:32:54

What kind of cooling do you have on that beast? My B1260 got a nice lil fan blowing air on it + legs to lift up my A1200 about 1cm and sure I'm temted to overclock it to perhaps 55-60Mhz with this mod. But to go to 80Mhz you need some serious cooling and a tower I presume.

Everything is at the bottom of my posts :-D

[AdMartin]

Too bad there are no Radeon drivers for AmigaOS available, otherwise this would be perfect for you...

/Martin

[Rob]

I have a Blizzard 060/60 the processor is marked XC68EC060RC60.  It
currently runs at 66Mhz. I tried an 80Mhz crystal in it, at first the
system would not boot, booting without startup-sequnce  I tracked this
down to setpatch causing it to hang.

From the shell I manually loaded Workbench and tried running Sysinfo
but found that it hung the system when it switched the FPU on.

I did try running some demos that didn't require an FPU, and was quite
impressed by it's performance, but without being able to run setpatch
the system is pretty useless for most purposes.

The heatsink and fan I used made the 060 cool to the touch so it may
be that 68EC chips have weaker FPU's than other versions.

I would be interested to see how fast you can clock the non FPU
version.

[shIva]

since this thread is rather actual :

has anyone ever overclocked the cyberstorm 060 mk I ?
(one of the very first)
if so, which oscillator did you use ?
was it soldered or in a socket ?

[whabang]

AFAIK, the 75 MHz version of the 060 can be overclocked to +85 MHz, but that wouldn't really be useful as it doesn't have FPU or MMU...

[PaSha]

@Rob:

The heatsink and fan I used made the 060 cool to the touch so it may be that 68EC chips have weaker FPU's than other versions.

Weaker FPU? 68EC chips have NO FPU. (although, some early full-equipped 68060's were labelled as 'EC'. These are mask F43G. If your chip is labelled 68EC060 with a different mask than F43G (printed in the top right corner IIRC), which I suspect it is, being labelled 60 MHz, you have no FPU.

[edit]
If a full-equipped 68060 fails the FPU quality control at Motorola, it may be relabelled as 'EC' to inform that the FPU isn't quite 100% ok.
[/edit]

@Shiva:
The cs mk1 has very fast memory access, which makes it difficult to overclock.

-Paul

[shIva]

@Shiva:
The cs mk1 has very fast memory access, which makes it difficult to overclock.

thx :-/
not even to 60/66 mhz ? in other words : what is possible with the mk i (w/o memory probs) ?