Will i notice a difference between these

I was thinking of getting better ram for my computer. right now i have samsung ram at 533 mhz and 1 gb. CPUZ says my latency is either 4 or 5(it says both dont know which one). but will i notice a differnece between these like a latency of 5 or a latency of 3 or 2 will that be a big of difference.

heres the links for the memory im thinking of getting

http://www.newegg.com/Product/Produc...82E16820146526

http://www.newegg.com/Product/Produc...82E16820146567

http://www.tigerdirect.com/applicati...928&CatId=1654

http://www.tigerdirect.com/applicati...200&CatId=1654

http://www.tigerdirect.com/applicati...872&CatId=1654

which one would be better for gaming? i mostly play counterstrike source, battlefield 2 and the fear demo and some other games. will i notice a difference in performance between these or is any one fine.

I'd probably go for the OCZ personally, it looks like it has the best timings, since the reviews on the second link show them to be a bit exaggerated

go with these
http://www.newegg.com/Product/Produc...82E16820146567

CL3 insted of 4 or 5

that's what I was talking about and I think I'd go for 4-4-4-8 over 4-3-3-12 but that's me, they should be pretty close to each other though

nah, the timings will help, but they cost too much

ok guys thanks for the help. ill probably get the OCZ. does anyone have any other suggestions for ram that have better timinngs then these or is it the best i can get for DDR2.