DDR3 memory starts at 800mhz and goes upto 1325mhz and is still 240pin memory. Some boards out now are 1066mhz and may be compatible if DDR3 is simply faster memory of the same type. So far no boards by either AMD or Intel specifying DDR3 have been seen. Those may be out late this year or early 2008.
The point is you get more bandwidth. The relative latencies go up yes, but if you have DDR2-800 @ CAS4, that CAS4 is the same amount of waiting as CAS2 on DDR-400 (10ns). Yes you lose more cycles but you have a lot more that you can give up.Besides, who really wants DDR3? ooo! faster speeds! but the latencies get slower with every speed increase, it is a direct function. I don't see the point.
you know DDR3 is just out well my question is AMD wont take it up until they sort out there timings but my question is INTEL have got DDR3 mobos out now but INTEL who supply APPLE now when will they change to DDR3
I shouldn't have said they needed to create a whole new processor, all they need to do is re-design the memory controller. This is a perfect example of the Athlon 64 based 939 and AM2 CPU's.They don't have to make a whole new processor though, they just have to design a new memory controller and integrate it which is basically all Intel has to do as well. Granted, there is the added need to fab new CPUs and change socket for DDR -> DDR2 but the main reason AMD waited because the added bandwidth doesn't do much for K8 and DDR2 was still expensive compared to DDR.
Now that I read it again, you didn't really say it but I guess it was kind of implied. But getting back to the OP, I don't know when Apple will use DDR3, probably not for a while yet though.I shouldn't have said they needed to create a whole new processor
I think he wants to know when will Apple pick up DDR3...
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They don't have to make a whole new processor though, they just have to design a new memory controller and integrate it which is basically all Intel has to do as well. Granted, there is the added need to fab new CPUs and change socket for DDR -> DDR2 but the main reason AMD waited because the added bandwidth doesn't do much for K8 and DDR2 was still expensive compared to DDR.