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Home Forums Quadra (700, 900, 950) & Upgrades — #19 Quadra (700, 900, 950) & Upgrades — #19
Post #19 by trag
Source ForumQuadra (700, 900, 950) & Upgrades — #19
Category68k
Post DateMon, 15 Dec 2014 - 19:25
Original URLhttps://68kmla.org/bb/threads/quadra-700-900-950-upgrades.643/
Post
Hi trag et al.

I'll have to submit photos of my pride-and-joy. I'll also submit names of the individual components with them.

I'm not sure about the speed of the RAM. It's a 128MB SIMM taken from a Sun Cobalt server. The processor is from NewerTech and it is a 40MHz 68040 chipped up to 50MHz and it goes by the name of Quadra OverDrive. It requires no drivers and no modifications. It sits in the CPU slot where the 68LC040 was. Uniserver recapped the mobo for me after I lost internal SCSI and I also got a PSU with a higher output from him. In the meantime, I got a 2-floppy LC case from CompuNurd and I put a SCSI MO in the place of the HD. It is now my AppleShare 4 server and the HD is a 72GB SCA drive running externally in its own case.
Looking forward to the info, ArmorAlley.  One minor correction.   I am not curious about the RAM.  I am curious about the VRAM.  All of the 128MB SIMMs I've seen are 60ns or faster, so there's no real question of those working.   However, in the case of VRAM, I've seen reports that slower VRAM modules may not work when clock chipping the Q605 (and relatives) above 33 MHz.   One gets dead or funky video, thinks  the clock chipping didn't work right, but it's the slow VRAM causing the issue.

However, it sounds like your upgrade may not drive the rest of the system at a faster speed, just the CPU, so these may not be relevant questions.

mp.ls