TaNaKa52 said:Even with that X1550 right there?
you have the concept of dual channel memory down right, but you're still confusing the terms "dual channel" with "DDR" (double data rate), they have nothing to do with each other.CCT said:Single rate:
DDR PC3200 at 400 mhz = 3200 mb/s
Double rate:
DDR2 PC3200 at 400 mhz = 6400 mb/s
that is usually the case, however some motherboards/memory controllers allow dual channel operation in odd configurations as well (such as 3 sticks, where slot B+C is equal to stick A).CCT said:The thing is, the double rate doesn't occur, afaik, UNLESS two sticks are installed as a pair
again, that is basically correct you just need to change the term 'double rate' to 'dual channel'.CCT said:Thus, he gets 768 at single rate 3200 mb/s versus what he could get with 2 x 512 at double rate 6400 mb/s.
I think I got that right this time
CMH said:Hmm...
You're confusing DDR with Dual-Channel RAM. DDR stands for Double Data Rate. Exactly what this means I've really got no idea, I just know that it makes the RAM go 2 times as fast as it should be rated.
DDR exchanges data 2 times (2 points)during 1 clock cycle. So, literally tick & tock. I think you're you're actually dealing with an AC sine wave, which switches polarity before returning to null (and beginning the next cycle). This is why the clock frequency is half the data transfer rate.