Memory madness

[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.

[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.

[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.

[x56h34]

@Karlos:

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

[x56h34]

@amigakit:

Forget about the 68k side and its speed. The problems arise with 240Mhz PPC cpus which are running at 60Mhz PPC busclock (totally unrelated to 68060 clock, mask, type, speed, etc.).

[x56h34]

Perhaps a particular revision of the 603e is more picky than others?

[x56h34]

All the biders which have retracted their bids with the lame excuse such as "entered wrong bid amount" have been blocked from ever bidding on my auctions again. It's a dirty trick of figuring out the highest bid for the leading bidder without paying for it in the end. :-(

Look at the bidder called "marc-james" for example. 48 bid retractions within 6 months!!! Entered wrong bid amount, my a$$. :-)

As for the PPC card question, yes this one is an actual 210Mhz card which works find with the 128MB simms.

[x56h34]

The simms fit fine on BlizzardPPC cards. It's a bit of a tight fit on the 90 degree slot though.