On 3/31/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Per Apple, for the B&W, compatible DIMMs must be: > > PC-100 or PC-133 Synchronous DRAM (SDRAM) <- Intel's "standard" > 3.3v, 8 ns (125 MHz), 64-bit wide, 168-pin, *unbuffered* only. > Speed codes (latency): > 3-2-3 (slowest), 3-2-2, or 2-2-2 (fastest). > Column address strobe: Lower the CAS (CL) rating is better. > Apple doesn't specify this, but most vendors offer CL2. > Min of 4 and max of 16 memory devices on the DIMM! > Max capacity of 256 MB per DIMM. > Max height 2.0 inches. > Qualified geometries: > 64 Mb technologies for 32, 64, and 128 MB DIMMs. > 128 Mb technologies for 128 and 256 MB DIMMs. > > Do NOT use: > Parity, ECC, registered or buffered SDRAM DIMMs. > 256 Mb technology, 32-bit wide, EDO or FPM. > > > http://www.ramseeker.com/scripts/sortModelDetails.php?modelId=21&sortSize=256mb
Thanks for that! Very comprehensive. Sadly, I'm working from a couple of antistatic bags full of an assortment of old DIMMs, so I generally don't know sizes & capabilities. I removed my 3 256s and tried what I had to hand - a PC100 256 and a couple of 128s. The 128 didn't work - the Mac would not even "bong" with them installed - but the 256 was OK and the machine was stable with it. I've taken 2 128s from the other, stable machine and now have a stable Mac with 512MB and two ATI cards, so that, at least, is a result - but now I'm going to have to start stripping PCs and things to get up to 640, which is about as high as I'll be able to go, and to try to get the other Mac up to at least 512 if I can. Thanks for the guidance! -- Liam Proven · Blog, homepage &c: http://lproven.livejournal.com/profile Email: [EMAIL PROTECTED] · GMail/Google Talk/Orkut: [EMAIL PROTECTED] Tel: +44 20-8685-0498 · Mob: +44 7939-087884 · Fax: +44 870 1271528 AOL/AIM/iChat: [EMAIL PROTECTED] · MSN/Messenger: [EMAIL PROTECTED] Yahoo: [EMAIL PROTECTED] · Skype: liamproven · ICQ: 73187508 -- Unsupported OS X is sponsored by <http://lowendmac.com/> Support Low End Mac <http://lowendmac.com/lists/support.html> Unsupported OS X list info <http://lowendmac.com/lists/unsupported.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[email protected]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive <http://www.mail-archive.com/unsupportedosx%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
