1 stick of DRR2 Versus 2

[davebee123]

Would a 1GB stick or DDR2 be as good as 2 512 MB sticks. Is there a performance difference?
Mobo being ASUS P5LD2
http://www.newegg.com/Product/Product.asp?Item=N82E16813131538

And Mem being
CORSAIR ValueSelect 1GB 240-Pin DDR2 SDRAM Unbuffered DDR2 533 (PC2 4200)
http://www.newegg.com/Product/Product.asp?item=N82E16820145525
Or
CORSAIR ValueSelect 1GB (2 x 512MB) 240-Pin DDR2 SDRAM Unbuffered DDR2 533 (PC2 4200)
http://www.newegg.com/Product/Product.asp?item=N82E16820145526
This question has probably been asked a hundred times as I look at other forums but I hear one way from one guy and the other way from another. Can anybody help me here?
Not sure I understand the whole 64MB versus 128MB thing. Looks like the same $ for either way.
Thanks

davebee123

 

[Lonewolf5460]

get the 2X 512mb ram the you can have your mobo run the ram in dual channel which is faster than having one stick of ram in one slot.I cant explain it better than that but I know running the two sticks of ram will be better that the one.

 

[davebee123]

Thank You very much

 

[Lonewolf5460]

no prob man