yes you can
NO
Unfortunately you can not. DDR and DDR2 have a different pin arrangement and they will never work in each others slots.
No, you cannot. PC2 is ddr2 type of memory when PC is ddr. Those types are not compatible.
no it will degrade your system
The difference is the number of pins per module and to differentiate, the notch is placed in a different position.
I believe so but it'll downgrade to the lowest one.
No the emachines t3612 supports pc2 4200 and pc2 5300 240 pin you can check the link also http://crucial.com/store/listparts.aspx?model=T3612
Yes. For example the iMac uses PC2-5300 DDR2 SO-DIMM SDRAM memory.
i need program for send pic from mobile to pc with cable usb / no program pc suite/other program / just for send pic
on a mac you can use the program GarageBand on a PC you can use the virtual dj software mp3 mixer
No the PC and PS3 do not play games together they use different networks and neither can read the others game
Probably. For DDR/DDR2/DDR3 memory, you take the MHz number (667) and multiply it by 8 to get the PC-xxxx number. In this case, it would come out to 5333 MB/sec, which is the amount of data the memory can process, theoretically. The 5300 and 5400 numbers are just approximations of 5333, used for marketing. The really important part is the 667 MHz.