I'm going to upgrade my RAM. I have 2 sticks of DDR2 1G PC2-5300 (333MHz) and 2 sticks of DDR2 512 MB PC2-5300 (333MHz) and there voltage rates are 1.8v. The maximum RAM upgrade I have have is DDR2 PC2 6400 do to CPU limitations. The upgrade I'm looking at are these: Newegg.com - CORSAIR XMS2 1GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Desktop Memory Model CM2X1024-6400 The only big difference that I see is the voltage and it is 1.9. Will the voltage difference create a problem for me and would I see a significant performance increase?