Which is better memory option?

Mysteryman2

Distinguished
Jun 14, 2013
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I have the choice of 2 memory options for my desktop......

4 * 1GB @ 1066Mhz
2 * 2GB @ 800Mhz

Both give me 4GB, but, I wondered if one is clearly better/faster than the other or will there be little to choose. I had read somewhere that 2 sticks is better as it can then utilise dual channels, but, they would be slightly slower.

The motherboard is an ASUS M3N78 Pro.

Any opinions would be most welcome - thanks!