I recently upgraded Ram in my PC,Windows Vista SP2 AMD Athlon 64 X2 dual core processor 5000+ ,started off with 2gb ram in machine,wanted to upgrade to 4gb,bought what specs were shown in Gateways support,pc2-4200 ddr2 dual channel dimms,i bought 2,1gb rams for slots 3 and 4.When i do a check on the ram,it is working fine and recognized as 4gb.Only thing i notice is that with first two original rams,slots 1 and 2,says they are pc2-5300 max bandwith of 333mhz,what they are working at.The ones i put in slots 3 and 4 read at pc2-6400 at max. bandwith of 400mhz,which they are running at,but on package said,they would run at 533mhz.What my concern is,is this o.k. they work at different bandwiths or is there a way,i can change the bandwith to match,without changing ram or is this o.k.,they work at different bandwiths.??I have attached a file,to show you,see what i mean.