I'm building an Intel based desktop and am not sure what speed of memory I should use. Here are the basic specs:
Motherboard: Intel D945PVS (945P Chipset)
CPU: Pentium D 940 3.2 GHz 800 MHz Bus
The memory spec on the motherboard supports DDR2 667, DDR2 533 or DDR2 400 MHz SDRAM DIMMs. When I put these specs into Intel's barebones selector guide (http://indigo.intel.com/mbsg/Default.aspx
) it comes back with "Dual Channel DDR2 400/533". My understanding is that the memory must run at least as fast as the system bus (800 MHz). I think this boils down to my lack of understanding of DDR2, but here are my questions:
1. Is this memory really operating twice as fast as the name, thus the "2" in DDR2? i.e. DDR2 400 is running at 800 MHz...
2. Why is DDR2 400 also listed as PC2-3200, DDR2 533 as PC2-4200 and so on?
3. Why is DDR2 667 (PC2-5300) not an option here according to intel?
4. Any general vendor recommendations for memory?
Thanks for your help.