Obviously the difference is speed.
2 dimm 2gb RAM comes with 2 1gb modules. 4 dimm 2gb RAM comes with 4 512mb modules.
not much. both have the same core, 2MB L2 cache and 667Mhz FSB. the only difference is the clock speed. T5450: 1.66Ghz T5550: 1.83Ghz
It is a form, speed and type of memory.
One can purchase 2GB DDR2 667MHz, at several online sites. Some of these online sites that carry this memory are "Amazon", "eBay", "Tigerdirect", and "Newegg".
DDR2 667MHz
Yes, it is backward compatible
it depend on your computer type,max ram that your computer can support
You can use 240-pin DDR2 667MHZ. And this mother board supports dual channel.Hope this helps.
PC5300/PC5400 667MHz SODIMM Chip will be compatible for the Dell Inspiron 1721.
PC-3200
The main difference is the manufacturing technology. CPUs of the series T5xxx and T7xxx are of the Merom core and manufactured on a 65nm structure. The T8xxx and T9xxx are of the Penryn core and manufactured on a 45nm structure. Because of the reduced structure it was possible to increase the L2 cache by 1MB (on the T8xxx series) resp. 2MB (on the T9xxx series). Difference between T5450 and T8100 T5450: 1.66Ghz, 2MB L2 cache, 667Mhz FSB, Merom 65nm T8100: 2.1Ghz, 3MB L2 cache, 800Mhz FSB, Penryn 45nm these 2 processors are interchangeable because both uses Socket P (Santa Rosa platform).
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.