Will a 2x512MB + 2x1GB configuration enable quad channel?

[Chone]

Or do I need all 4 sticks to be the same size?

Thanks a bunch, there used to be a neat chart someone posted here sometime ago, where is that?

By the way this is for a Mac Pro.

 

[thebeephaha]

Don't you mean dual channel?

I didn't think there was a quad channel memory controller chipset yet.

And theoretically it should. But I think you need to have them in certain slots.

Then it would do like 1GB + 256MB as one channel and 1GB + 256MB in the other channel.

 

[Demon Hunter]

I'm not sure it's called "quad channel" but it does support a 256-bit-wide memory architecture.

 

[trainguy77]

Yeah its quad channel. It has 4 memory channels. But yes this would work just fine.

 

[gammamonk]

My understanding is that to achieve quad channel, you need 4x identical sized chips in the appropriate slots. You have 8 slots, so I'd just get 8x512 and have 4gigs.

You'd have to ask CanadaRAM to be sure about that tho.

 

[nitynate]

Yeah, 8x512 sounds better.

And Cheaper me thinks.

 

[WildPalms]

You'll need equally sized ram sticks or bank switching will kill your performance. Just pick a total ram size you can afford/need and divide by 4 (if possible)

 

[Schroedinger]

Did a bunch of research on this for my own mac pro. Your setup will work just fine. If you go with 2x512 + 2x512 + 2x512 this will be slightly slower than 2x512 + 2x1024. this is b/c there are 4 channels, so if you have six sticks, 4 will end up sharing two of the channels. If you double up the stick itself (1024 instead of 512) this isn't a problem.

 

[slughead]

By the way, quad channel sucks.

It does not significantly improve performance. Look up the benchmarks on it.

 

[Demon Hunter]

By the way, quad channel sucks.

It does not significantly improve performance. Look up the benchmarks on it.

Link please?