BellusEndus wrote:
If I'm reading it right theres some conflicting information being given here. Assuming he's using an XP (which is what I've got - 3200 barton core running at 2.2GHz with nforce2 chipset) dung bomb seems to say 1gb and 2 512 will work (although you didn't say it would be in dual channel?) but psycho says this won't give dual channel. Or do you mean it won't give dual channel but will still have better performance than 2 x 512 in dual channel?
Unless the manual stipulates otherwise, installing a single DIMM results in a 64-bit, single memory channel. To activate dual channel install DIMMs in 1&3, 2&3, or 1,2&3. At leas that is according to the AN35N Ultra manual for the nForce2 board that I used to have.
However, having dual channel really provides little to no speed benefit to the XP. Remember, the XP used a traditional north bridge to supply the memory controller functions. The bus between the north bridge and CPU is always a single 64-bit DDR bus. As such, have a 128-bit (2 x 64-bit) busses going from the north bridge to the memory controller doesn't do much because you are limited by the single bus that feeds the CPU. If you are running many several concurrent I/O functions that use DMA mode, then it might help a little; by this I mean if you are trying to feed data to/from the CPU while also having many other devices that need to access memory directly via the DMA channel, then it can help some.
Last edited by Agent_Dung_Bomb (2006-05-11 12:23:41)