I have T7300 CPU running at 800Mhz , whereas my ram is running at 667Mhz ? a waste ?

Currently , I am thinking abt Vostro 1400 , I think I could not use up to my Cpu capacity if my ram is running at 667Mhz , but 667mhz is the only choice that Dell offers

 

Refer to this thread.

Also, when asking questions try to write a bit more coherently.

 

Wait for 800MHz FSB CPUs then. It'll be a long wait though.

 

He's talking about Front Side Bus speeds...

I don't think the RAM performance is a huge bottle neck in Dual Channel mode since the machine's FSB is Quad Pumped (200Mhz X 4)...

 

by 800 MHz he meant the FSB speed. one of my friends told me that ur FSB and ram speed should match in order to max out the performance. though not too sure on this one..

 

That is the classic way of thinking from when RAM and FSB buses were both single data rate... I'm not sure how applicable that is to now where FSBs are Quad Pumped (intel) and ram is DDR...

 

I think that the current Core 2 Duo processors make any Ram that is 800MHz down to 667MHz by default. So theres no point in getting 800 MHz ram, its a complete waste of money.

 

more or less a waste, unless your gearing up for the future when 800mhz is the standard. That said, the price difference now is probably more than the price of 800mhz when its a common-place standard.

 

Actually while going for the FSB : DRAM ratio one should not look at the effective speeds but the actual ones.... A 800 Mhz FSB processor's true FSB is only 200 Mhz but is quad pumped.... Similarly a 667 Mhz DDR2 SDRAM's true memory clock is 333 Mhz..... So the FSB : DRAM ratio for this combination is 200:333 which is nothing but 3:5.... As you can clearly see it is not the RAM which is the bottleneck here to achieve a 1:1 FSB : DRAM ratio but the processor's FSB.... So the only way to achieve a true 1:1 ratio is by lowering the memory clock..... With a 667 Mhz DDR2 SDRAM more memory cycles would be wasted thats all....

With the AMD processors it is a totally different case since the memory controller is integrated onto the processor itself and have a Hypertransport bus between the CPU and RAM.....

And to clarify one more thing Santa Rosa platform with 965GM or 965PM chipset does not support RAM clocks higher than 667 Mhz and so there is no use buying a 800 Mhz DDR2 SDRAM....

 

What a great post , are you an engineer ?

 

Lol yeah But what I posted is out of my general knowledge and nearly more than 10 years experience with computer hardware and the technical stuff....