welcome parklife... they must real busy right know... they should be with you real soon.... and buy the way... there is no stupid question... we are here for you... L

If you are talking of putting 1 stick in as listed at the top and 1 stick as listed at the bottom then don't.

Use sticks of identical speeds and ideally the same size.

Hi

Using different types of memory, in general, will force the fastest to underclock down to the level of the slowest.

However, as you can see for yourself, more parameters come into play, as latency, and voltage-plus the different quality standards for each manufacturer.

Some systems can operate in dual-channel mode even if the modules are different, however, eventually, this discrepancy will show in memory intensive applications (gaming...)

I'd recommend you go for 2 modules of the fastest (DDR PC3200), and as already stated, there are no stupid questions here.

Many thanks to all you computer experts !

Peaaccceee

Parklife !

Your welcome Parklife.

I know this has been answered, but if I have 2 gb ( 2x1gb) ddr2 800 mhz pc6400 ocz gold with timings of 5-5-5-18 and want to add 4 gb (2x2) of ddr2 800 mhz pc6400 with the same timings but of a different brand ( lets say patriot)

Will this cause a slow down, change in overclocking or anything else??

Thanks