RAM 512 PC400 with 256 333

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psman

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Hello

I currently have an 256DDR 333 RAM I am planning to upgrade i think even of exchanging it with a 512DDR 400 or keep it and install the new 512DDR 400.. or just buy a new 256 @ 333

Since i did not compare 333 and 400 myself. Can anyone help me with that
1. Installing 2 chips with different PC is that fine??
2. Is there a great difference between PC333 and 400
3.Is 2 256 chips @ 333 the same as 1 512 @ 400??

any aid is welcome

Thanks
 
1) it would become 768 @ 333 mhz because it down clocks to the lowest clock
2)yea, 333mhz runs @ 2.7 gb/sec where as 400mhz runs @ 3.2gb/sec
3)no
 
Oh Thanks
Now should i go for the upgrade or just install a new one??
i.e remove the old and install 1 512 400 or but them in the 2 slots ( i only have 2 slots)
 
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