Aaron: Do yourself a favour and do not mix your RAM. READ your manual or check for it at Apple and get the RAM that is recommended by Apple as the correct module. IMO The DDR will not function in that computer and could actually break it. Each of these RAM chips you named has different bus speeds and different latency and are vastly different from one another. It's your computer and your money so what you do and how you spend your dough is up to you. jj On 14-Mar-06, at 10:57 PM, g4-request at listserver.themacintoshguy.com wrote: > From: Aaron <macuser at aarons.fastmail.fm> > Subject: [G4] G4 Dual 867 MDD RAM question > To: <g4 at listserver.themacintoshguy.com> > Message-ID: > <20060313101826.244CD6CC6C4 at listserver.themacintoshguy.com> > Content-Type: text/plain; charset="us-ascii" > > I need more RAM for my G4 Dual 867 MDD, which presently has one 512MB > PC2100 stick in it. (It came with two, but I took out a bad one and > can't remember where I put it so I can exchange it! <:-| ) > > Anyway, I'm about to buy more RAM and, since I have a lot of store > credit from Amazon, I'm thinking of buying at least two of the > following: > > "Kingston 512 MB 333 MHZ DDR-PC2700 DIMM CL2.5 PC Memory" $44.77 each > (including free shipping) > > which is listed at <http://www.amazon.com/gp/product/B00006HVT4/>. > > As an alternative, I'm also considering: > > "Kingston 1GB DDR400 C3 KIF [sic!] OF 2 ( KVR400X64C3AK2/1G )" $106.99 > for the pair > > which is listed at <http://www.amazon.com/gp/product/B00009XFVN/>, > with the following info: > > "ValueRAM's KVR400X64C3AK2/1G is a kit of two 64M x 64-bit (512MB) CL3 > DDR400 SDRAM (Synchronous DRAM) memory modules. Total kit capacity is > 1GB (1024MB). The components on each module include sixteen 32M x > 8-bit (8M x 8-bit x 4 Bank) DDR400 SDRAM in TSOP packages. Each > 184-pin DIMM uses gold contact fingers and requires +2.6V" > > 1) Will either (or both) of these work in my machine? > > 2) Will I be able to continue using the PC2100 stick I already have > along with these? > > 3) If they both will work, what reasons might there be for choosing > the higher-priced ones ($106.99 vs. $89.54 for 1 GB)? > > Any definite information or reasonably well-informed opinion would be > appreciated. But time is of the essence. I'm going crazy trying to do > video work on this machine with only 512 MB of RAM > > - Aaron