500 FSB vs. 800 FSB computer, difference, function, research

andy

Hi all,    I am still deciding if i should go for CPU with 800 FSB for my new computer. The main purpose for my new computer is just to edit digital movie and maybe encode some movies. But I still don't know if the 800 FSB is worth the expense. Anybody can help me out with this? I was told that 800 FSB is really fast. Is it really? Does it give a big difference from 500 FSB? Also, what memory card will give 800 FSB full function? I do a research and hear someone tell me that Rambus is the correct memory for 800 FSB CPU. I am also told that Rambus is not standard memory. So what's up, guys? Any helps or replies would be greatly appreciated. Peace!

I looked into this recently to a fair degree of depth. With video encoding, there is a significant performance increase by shiftin to the 800Mhz FSB system. This vastly increases the memory and CPU bandwidth which encoding makes huge use of.

DualDDR is the most cost effective way to go, get yourself a i875 based board, 2 x 512MB PC3200, and a P4 3.0-C and you'll be cooking. This gear is not too expensive these days, especially considering teh performance gains.

Thanks for your reply. But i have another question, will PC3200 make P4 800 FSB work at full function. I thought PC 3200 only run at 400 something mhz. What about PC 3500? Will that help? Thank in advance!

Ah yes, the confusion of bus speeds. In summary;

AMD CPU's are double pumped, meaning a raw FSB of 133Mhz is really 266Mhz.

Intel P4 CPU's are quad pumped, meaning a raw FSB of 133Mhz is really 533Mhz.

DDR SDRAM uses the leading and falling edge of each cycle to process data, hence DDR which means Double Data Rate. This means a raw FSB of 133Mhz with DDR is really 266Mhz.

It really is very confusing to those new to the arena. So the New P4 800Mhz FSB only really has a raw FSB of 200Mhz as the CPU is quad pumped which gives it the 800Mhz rating, 4 x 200 = 800Mhz. That means you need to use ram that uses a raw FSB of 200Mhz which is DDR400, or PC3200. 400Mhz DDR divided by 2 is 200Mhz. I hope this making some sort of sense.

SO what is the best motherboard for the 800fsb processors? I've been looking at the Asus P4P800 DELUXE which is around $140 on Googlegear. Do you recommend this board or another?

TIA!

Check this  one out; you'll love it I promise

It's not the 800mhz bus, it's that you want a board that supports the Hyperthreading capable CPUs, which happen to be the 800mhz bus chipsets.

Encoding video on virtual CPU 1 while playing Unreal on virtual CPU 2 = win!

Originally posted by Xayd
It's not the 800mhz bus, it's that you want a board that supports the Hyperthreading capable CPUs, which happen to be the 800mhz bus chipsets.

Encoding video on virtual CPU 1 while playing Unreal on virtual CPU 2 = win!  

Not true..My Asus P4PE 533mhz mobo supports Intel's Hyperthreading CPU's and it is a 845 chipset.