Transfer Speed

[Farabi]

Intel's first chipset for the Pentium 4 was the 850, which supported only Rambus memory and provided a 3.2 Gbytes/sec transfer rate. Subsequent chipsets, starting with the 845, support the more common DDR SDRAM.

Is mov instruction can do 3.2 Gbytes/sec or another moving function?

[Mark_Larson]

Intel's first chipset for the Pentium 4 was the 850, which supported only Rambus memory and provided a 3.2 Gbytes/sec transfer rate. Subsequent chipsets, starting with the 845, support the more common DDR SDRAM.

Is mov instruction can do 3.2 Gbytes/sec or another moving function?

The 3.2 GB/s was only on dual channel P4's like you would find on workstations.  A desktop system didn't have dual channel back then, and so only ran at 1.6 GB/s.  My home workstation has dual channel PC800 Rambus on it.  The speed is the "thereotical maximum".  You can't actually achieve it.  The cloest you can come is with SSE2 instructions.  Check out the P4 optimization guide or AMD optimization guide.  They both have sample code that appoaches the theoretical maximum.