Memory madness

[Cyberus]

I know its not THAT interesting, but I just had to grin :-D
My Blizzard 1230MKIV and SCSI kit with 256MB of Fast RAM :lol:

For some reason, Avail shows the 256MB, but Sysinfo shows 0 MB :-?

Anyway, time to tool up the B1260 and BPPC as well with 256MB apiece... :-D



This post is dedicated to Haymiggan :-)

[x56h34]

Be careful that crashes on the PPC side are possible with those HP simms if your PPC busclock is 60Mhz and 603e is clocked at 240Mhz. It seems that that's the breaking point for those HP 128MB simms.

[Karlos]

x56h34 wrote:
Be careful that crashes on the PPC side are possible with those HP simms if your PPC busclock is 60Mhz and 603e is clocked at 240Mhz. It seems that that's the breaking point for those HP 128MB simms.

That's just bizzare :-/ Exact same SIMMs were used in plenty of 66MHz FSB PC systems AFAIK.

[Cyberus]

So what you're saying is that it'll crash my BPPC (240MHz & 50MHz)?

[x56h34]

Lempkee and myself have both reported the same problem to haymiggan. I'm not sure what the exact reason for the eventual PPC crash is (perhaps some sort of a bug in the 603e), however it only happens with 60Mhz busclocked 240Mhz PPC cpus. I have tested at least 10 pairs of these simms with 6 different PPC cards, only to come up with the same results (e.g. crashes with the 240Mhz BPPC).

The other PPC cards with 210Mhz speed or less worked great.

I should also add that when I use different simms with that particular 240Mhz card of mine everything works perfect.

[Kronos]

x56h34 wrote:
Be careful that crashes on the PPC side are .....

"PPC-side" on a 030-card ??

Could you please explain how you did that ?
/me still has an A2630 that could need such an upgrade  :-D

[x56h34]

Cyberus:

It doesn't hurt to test it out. Here's how to do it.
Install full 256MB of ram on your 240Mhz PPC card and run Gears_PPC and let it run for 30+ minutes.

I would usually get a crash with anything PPC related (like a game for example) within 5-10 minutes.

p.s. I'm not trying to sound doommasterish here regarding these simms. It's just the way it is. :-) Ask haymiggan for more details. :-)

[x56h34]

@Kronos:

Please carefully read the thread once more.

[Karlos]

It seems a few people have experienced problems with these SIMMs dying after some time when runnign at 60MHz on BlizzardPPC cards. The 240MHz version uses a 60MHz FSB (the 50MHz is the 680x0).

It's strange because a lot of these large capacity SIMMs were designed at a time when 60/66/75 MHz FSB speeds were quite common for PCs that used them :-?

[Karlos]

x56h34 wrote:
Cyberus:

It doesn't hurt to test it out. Here's how to do it.
Install full 256MB of ram on your 240Mhz PPC card and run Gears_PPC and let it run for 30+ minutes.

I would usually get a crash with anything PPC related (like a game for example) within 5-10 minutes.

p.s. I'm not trying to sound doommasterish here regarding these simms. It's just the way it is. :-) Ask haymiggan for more details. :-)

How odd. I played GLQuake for a good hour on mine, no problems. I wonder what the hell gives?

[x56h34]

@Karlos:

I agree, it's weird. It's gotta be something related to the 240Mhz 603e not playing along nicely with these simms.

[Cyberus]

@Karlos

Do you have a 240MHz PPC?

[Cyberus]

@ x56h34

That's a right {bleep}ing downer :-(

So I suppose I'll need to install 2 x 64MB SIMMS?

[x56h34]

@Cyberus:

Like I said, it doesn't hurt to try and see.

I have been using 2x64MB simms in my A1200 PPC tower, due to this reason (look at the sig). :-(

[amigakit]

The chips we sell have been tested on a BlizzardPPC 060 64Mhz / 210Mhz and they are fine on that overclocked system.  

I'll try them on a 64Mhz overclocked PPC and report the results here...