2rx4 is better
The difference between Memory Module 2Rx8 and 2Rx4 lies in their organization and data width; 2Rx8 refers to a module with 2 ranks of 8-bit data paths, while 2Rx4 has 2 ranks of 4-bit data paths. This affects the memory's throughput and performance characteristics. In terms of compatibility, they may not be directly interchangeable due to differing data widths, which can impact how the memory controller interacts with the modules. Always check the motherboard specifications to ensure compatibility with the desired memory configuration.
My IT provider is convincing me there is no difference between a 2Rx4 and a 2Rx8 RAM. A littledigging aroundinformed me that x4 means 4 bits on a chip vs x8 means 8 bits. Which is good, but what difference does that make?
DDR2 667MHz
the democrosie of the tecnoration of scondairy pollicusion to which is (2 to the second power (x)times 4
My guess is yes. The 1Rx = single rank ie memory chips on one side only. eg 2Rx4 would be double sided RAM 1rx8 is single sided. Single sided is quicker. I don't know what the x8 or x16 means but I think it has to do with accessibilty......I couldn't find much out except that regardless of rank number(4,8,16 etc) the CPU only accesses one at a time......it seems to make no difference.
This is fully buffered RAM for servers as it is ECC Registered! It is also an FB DIM so will not fit in standard 240pin slots. An example of servers that use this are: HP Proliant DL360 G5 HP Proliant DL380 G5 Dell Poweredge 1950 Dell Poweredge 2900 Dell Poweredge 2950