Memory bandwidth question

[GMtheBest]

What is memory bandwith dependent on ? Is it a combination for the processor, motherboard and memory ?

For example, lets say I have 2 identical systems (same motherboard, same ram and same settings (fsb, ram timings, etc) But the processors are different one is a A64 3700+ and the other is a A64 3200+ Will the memory bandwith be the same on both systems or will the A64 3700+ system have more memory bandwith becuase of the faster processor

 

[GMtheBest]

Bump

 

[saltedeggman]

memory should be independent of Processor clockspeed (with the same HTT, or FSB)

thats my understanding

 

[designit]

Both processor and Rams have bandwidth independatly. an 800 FSB has 6.4 GB/s bandwidth and a 1000 FSB has 8.4 bandwidth.
a pc3200 has 3.2 GB/s bandwith but if you use dual ram you get 6.4 GB/s.
533 has 33% more than 400 MHZ and 667 has 66% more than 400.
the ttal bandwith of your system performance is the sum of your ram bandwidth+ your CPU. Remember it does not mater how many MB of ram you have but it matteres what CPU FSB and what RAM spped you have . Dual Ram double the bandwith of your ram.
One thing to consider is that more ram bandwith does not certainly means you have better performance as long as your CPU is limited. another word if you have an 800 MHZ CPU you use most of it with a dual 400 MHz Ram(400+400) devided between your rams.
But if you have a 1000MHZ CPU then a dual 500 MHZ Ram will take it all.
If you overclock your 1000 FSB CPU to lets say 1200 the you need a dual 600MHZ ram to be more efficient. It is a waste if you boost your CPU up but your RAM is limited.
The final total bandwith of your overclocked system depends on your boosted FSB and boosted Ram. example 1200 FSB CPU=9.6 GB/s bandwith+ 600 MHZ dual Ram(9.6GB/s)
will give you 9.6+9.6=19.2 GB/s of final bandwith.
Just remember to creat best and most efficient system all components most work together properly and your graphic card should also support your boosted system.
This is what I have learn by reading tech reviews, and i may be wrong. so ask others and research this site, intel, and AMD to learn more.

 

[imported_Kensai]

Memory bandwidth is entirely depending on memory clock speed.
Like you said at the start, assuming you've got two identical systems with the exact same memory and settings but one with a faster CPU.
Memory bandwidth will be roughly the same.

Generally, it's usually the motherboard that calls the shots for memory. But in the case of integraded memory controllers like the S754, S939 and S940 chips, then it's the CPU which limits memory bandwidth.

 

[GMtheBest]

Thanks Kensai, thats what I thought.