Memory for Athlon 64 X2 AM2 CPU
masop
Good afternoon everyone. I need some memory advice. According to the AMD web site, the following memory listed below is compatible with all AM2 processors. I need clarification as to which memory would be best for a 3800+ or 4200+ AM2 processor, as noted below. The Motherboard this processor and memory will be used on is the Asus M2NE. I am looking for 2GB (1GB x 2) of memory and don't want to drop more than $300 or so on it, give or take a few.
Processor(s) desired:
Athlon XP X2 3800+ AM2 (Retail Boxed)
or
Athlon XP X2 4200+ AM2 (Retail Boxed)
Memory Types Available:
PC2 3200 (DDR2400)
PC2 4200 (DDR2533)
PC2 5300 (DDR2667)
PC2 6400 (DDR2800)
I would prefer a processor with 1MB x 2, but the models that have that cache size (4000+, 4400+, 4800+, 5200+) are either very hard to find or are quite a bit more expensive. Thanks for the input!
 MaSoP
Processor(s) desired:
Athlon XP X2 3800+ AM2 (Retail Boxed)
or
Athlon XP X2 4200+ AM2 (Retail Boxed)
Memory Types Available:
PC2 3200 (DDR2400)
PC2 4200 (DDR2533)
PC2 5300 (DDR2667)
PC2 6400 (DDR2800)
I would prefer a processor with 1MB x 2, but the models that have that cache size (4000+, 4400+, 4800+, 5200+) are either very hard to find or are quite a bit more expensive. Thanks for the input!
 MaSoP
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More about memory athlon

Quote:You take the speed of the CPU
2000
2200
divide it by 200, that gives you the multiplier:
10
11
Divide the multiplier by 2, that gives you
5
5
Divide speed by last product:
2000/5=400
2200/5=440
For the first PC2 3200 (DDR2400)
For the second PC2 4200 (DDR2533)
Appreciate the input. The actual figures all come out to 400 for all X2 processors when you do the math on a calculator. There are .25 and .50 and .75 figures to deal with for some or the speeds. It appears that you are rounding the multiplier. If I get a 3800 model with PC2 3200 memory (2GB) and then 10 months from now, I want to upgrade to a 5000 or above, would that require I replace the memory with PC2 4200 or above? I keep seeing system configurations with PC2 4200 and PC2 6400 and other memory speeds with various X2 models. I assume they are OC'ing? I have no need to OC. I just don't want to get memory for a slower processor that isn't useable on a faster model in the future. That sounds like a very pricey upgrade path being forced by AMD. Thanks!
 MaSoP
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