What does "Asynchronous Memory Clock" mean exactly?

[FrogDog]

I'm pretty sure it means that you can adjust the memory clock independantly of the FSB, but I'm not quite sure and need to confirm!

 

[Brian48]

Yes. That's what it means. Usually you get this with motherboards that allow you run the RAM at a different rate as the bus (ie. 100/133, 133/166).

 

[John]

example - my Epox 4BDA2+ allows a 3:4 memory setting. I run 150FSB and the memory is running at 200MHz (800MHz QDR).

 

[StageLeft]

Damn I can't decide between that Epox and Samsung 2700 or shaving $40 off the price with a P4B266-C and Kingston 2100

 

[jcmkk]

How about the MSI 645 board and Samsung PC2700? They make a great combo.

 

[oldfart]

If you plan on going above 132 FSB and want the best mem BW you can get from DDR, the EPOX is the way to go. The non RAID version is ~ $100. Spend the little extra and get PC2700.

 

[John]

oldfart is the one that convinced me to try the Epox. Skoorb, spend the extra money and do it right the first time. If your 1.6a will do 150 FSB and your PC2700 will run 200Mhz, then you can expect 2900 ~ 3100 in Sandra memory bench. How's that for bandwidth?

 

[zemus]

"I'm pretty sure it means that you can adjust the memory clock independantly of the FSB, but I'm not quite sure and need to confirm! "

this would be correct.


In addition it means it also is buffered, in this case it's just 1 unit wide. this buffer is simply to seperate the two differant clocks. Asysnc anything is not as effecient as the Sync counter part. but where not talking about anything that one should worry about too much, but do be aware of it. Going ASYSNC basically ups the latency, hoever does not have much effect on bandwidth