Is there a speed difference, between various ddr-400 pc3200 512mb ram?

Answer 1

Since you didn't specify any brand names or specifications, I'm guessing that you're talking about different brands.

Some good RAM brands are OCZ, Kingston and Corsair, which supply very good PC3200 RAM (I have 2x1GB DDR400 PC3200 Kingston RAM).

You can also go for the cheaper option which is just generic RAM with no brand, which also gets the job done, but has no guarantee of good performance.

As for the speed difference, there is no noticeable speed difference between any of the brand names and the generic brands, the only difference being that the generic RAM might give way quicker than the commercial RAM, but that's very unlikely too.

I hope this helps,

Pat.

Answer 2

NONE.
BUT the high performance offering or variant usually has lower latency and better overclocking headroom. The speed difference can only be realized if you will overclock your processor; w/c also overclocks your RAM.