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Relationship between Athlon 64 HT Clockspeed & RAM speed?

N

Nickel020

Senior member
What is the relationship between the RAM clockspeed and the clockspeed of an Athlon 64 (i.e. is the HT speed linked to the RAM speed or can you change the RAM speed as you like; is there any benefit of running it synchronous like Nforce/Athlon XP)?
I want to buy 1 gig of RAM (2x512MB) and would like to be able to still use it when I upgrade to an Athlon 64 in about 10 months. I currrently have an Athlon Xp 2800+ which I want to overclock but for this I don't really need more than CL2 PC3200 RAM.
What RAM should I get for the Athlon 64 system (probably using a Socket 939 3700+) that I am planning to get early next year? I am looking to spend $300 maximum for 1GB of RAM.

Thanks in advance for any advice!
 
I would like to know this as well... At default clocks, is there any reason for me to run DDR400 vs something higer?
 
Well, DDR 400 (PC 3200) it the minimum for the Athlon64 (socket 754) platform to run well. I recommend PC3500 only because most people want to do a small overclock, run tight timings, with two sticks of memory (like me) and PC3500 works great for that. I could do more with one 512 stick, but with 2 sticks I had to go down 5 mhz to 213.

Edit. The relationship is memory x 4=HTT bus and that x 2 = 1600 (bidirectional bus)
The CPU to memory vries, but is memory x 10 for the 3000+ which is 2 ghz. For the 3400+ it is x11=2.2 ghz.
 
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