Which One is Better?

[y4na]

OCZ Gold 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model OCZ2G8004GK (http://www.newegg.ca/Product/Product.aspx?Item=N82E16814130434)

or

Crucial Ballistix 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model BL2KIT25664AA80A (http://www.newegg.ca/Product/Product.aspx?Item=N82E16820148212)

or

G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D-4GBPQ (http://www.newegg.ca/Product/Product.aspx?Item=N82E16820231122)

[slaveofconvention]

Are you planning to overclock? If not, pretty much any cheap generic ram will do - premium brands tend to be overpriced if you're going to leave it at stock speeds. If you ARE going to overclock, I'd be looking at faster ram anyway - the 800 top speed just gives you a disadvantage from the start - there is much faster DDR2 available now

[x88x]

I would recommend the Crucial. Personally I prefer OCZ, Crucial, Corsair or Mushkin, and the Crucial you linked has significantly better timings than the OCZ and G.SKill. Speaking from personal experience, that difference in Cas Latency really does translate to a noticeable increase in performance.