DDR or regular SDRAM? for encoding?

[josetjr]

I'm building a new computer (AMD XP 1800), and the motherboard will have DDR SDRam memory slots and regular SDRAM memory slots. So far I have seen that regular SDRAM sticks cost less than DDR sticks. I have also heard that DDR is better for encoding. Is this true? Is there a major difference? Also does anyone know a cheap place to buy the memory, online or around NYC?

[tww1]

Yes you will see the defferance fron SD Ram. Or at least i do.

[loudanddeep]

I you are going to bother to spend the money on a ddr mother board (hopefullay a kt266a or sis 735), and an xp 1800 than I would not skimp out on the memory.

I have seen some of the bench marks, and it will make a difference.
How much? About as if you had an XP 1600.

BTW~ that will be the equal to about a p42000 for mpg encoding...

dp

[RFontenot]

If you are doing software MPEG encoding, then definitely go for DDR.

MPEG encoding with I, P, and B frames requires storing frames in memory so they can be referenced during encoding. A large amount of data travels back and forth between main memory and CPU, and not much of it is cached. So memory bandwidth is important when using software MPEG encoding.

DDR-SDRAM is able to transport double the amount of data by using the rising as well as falling edge of the clock signal for data transfers. So memory bandwidth is essentially doubled compared to regular SDRAM.

RF

[josetjr]

What is a reasonable amount of memory then? I was thinking of getting about 128mb, maybe at most 256mb if i find a good price.
Oh and the motherboard wasn't too costly. I got the motherboard, processor (xp 1800), mid-tower case, fans, and shipping for $288 total.