Best memory stick combination

[umerwahla]

I have 4 memory sticks with me. Just want to know what is the best combination to get the best performance out of them.

2 X kingston PC667 1GB DDR2 stick
2 X Twinmos PC2-4300 256MB DDR2 stick

what is the best combination to install these sticks?

Thanks

[CB5000]

If you install all of them, the memory slows down to the slowest ram you have which is the 533 mhz or PC2-4300 speed. I would leave out the 256MB chips and use the 2x1 gig ram. Plus some motherboards don't like mixing different speed rams.