Need to match correct memory type to processors

Good morning/afternoon/evening. I'm trying to match the correct (non-overclocked) memory type to each line of processors from Intel and AMD.

AMD Athlon X2
AMD Athlon II X2 (Phenom Based)

AMD Phenom X3
AMD Phenom X4

AMD Phenom II X2
AMD Phenom II X3
AMD Phenom II X4

Intel Celeron (E1xxx)

Intel Pentium Dual Core (E5xxx)

Intel Core 2 Duo (E7xxx and E8xxx)
Intel Core 2 Quad (Q8xxx and Q9xxx)

Intel Core i7
Intel Core i7 Extreme


I've done all the research I can do online but have not found any conclusive evidence stating the default/native memory type and speed (not latency) of most of the processor lines from Intel or AMD. Coming from a long past of using AMD processors in my systems, I'm aware that the Athlon X2 series is definitely DDR2-800 based. I'm not 100% positive about the Phenoms though, or any of the Intel lines.

I am aware of the bus speed for all of the series above, but not whether it is a DDR2 or DDR3 memory specification. Again, i'm not interested in "overclocked" memory speeds, just the "native" non-oc'd memory that the processors require to function at the full native clock speeds. Any input? Thanks in advance.

-- MaSoP

But which memory type were these processors built around? Obviously all of the current processor series from AMD and Intel are designed for either DDR2, DDR3 or both. I need specifics. The data sheets from intel and amd don't designate whether the processors work wioth DDR2 or DDR# or both specificslly. There is no reference to memory period in the intel data sheets. It's amazing how they lack direction.

For example, if I wanted to buy an Intel Core 2 Quad Q9650, would I buy DDR2 or DDR3 memory? Which speed would be appropriate for a non-overclocked optimized setup? Optimized being not overclocked or underclocked. Would it be 1333MHz? This is where it gets very confusing.

From what I have found, the majority of processors in the current intel lineup "appear to use 1333mhz, except for a few models which use 1066. I'm still not sure about all of this. If we all knew this clearly, it would make buying a motherboard, processor and memory combo much easier. Nobody wants to buy the wrong combination!

For your average joe, trying to build a system with the proper matching components is just getting more complex as the years go by. It should be getting easier but it is not.

-- MaSoP

anything intel before i7 depends on the motherboard chipset eg x38,x48,p45 etc(since the processor doesnt have the memory controller)

you might consider these the default speeds
AM2 athlon's are DDR2-800
AM2+ athlon's are DDR2-1066
phenom's are DDR2-1066
AM2+ phenom II's are DDR2-1066
AM3 phenom II's and athlon II's(pretty sure about this) are DDR2-1066/DDR3-1333 (they have both DDR2 and DDR3 controllers)
i7 are DDR3-1333 (<=1.65v though)

my thought, just put together a potential build online, post it on here, and we can tell what is wrong or what you could change to improve the build for a certain cost and application (eg. gaming, rendering etc)