PC6400
PC6400 DDR2 memory runs at speeds 400 MHz or higher, which is where DDR memory left off. Popular modules of DDR2 memory at the time of this writing are PC3200 (400MHz), PC4200 (533MHz), PC5300 (666MHz), and PC6400 (800MHz).
One can find a PC6400 for sale online. Some of the useful websites for purchase of a PC6400 are Best Buy, eBay, iOffer, Overclock, Elive and Tiger Direct.
PC-3200
Yes, it will just run at the max speed that the motherboard supports. So if the motherboard specifies pc5300, you're going to be running the pc6400 memory which is faster than the 5300 at a lower speed. But it will work just as well as the pc5300. [thumbsuck] Might even run a bit cooler at the slower clockspeed due to higher quality etching for the pc6400 and or larger chip die sizes. [/thumbsuck]
he rating for RIMM memory is based on the maximum theoretical bandwidth (in MHz) and included speed ratings of 800 MHz, 1066 MHz, 1200 MHz, 1333 MHz, and 1600 MHz.
Frequency Coverage: VHF-Lo: ................................ 29 MHz -50 MHz (in 5kHz steps) Ham: ................................... 50 MHz -54 MHz (in 5kHz steps) Government: .......................... 136 MHz -144 MHz (in 5kHz steps) Ham: ................................. 144 MHz -148 MHz (in 5kHz steps) VHF-Hi: .............................. 148 MHz -174 MHz (in 5kHz steps) Ham/Government: .................. 460 MHz - 450 MHz (in 12.5kHz steps) UHF-Lo: .......................... 450 MHz - 470 MHz (in 12.5kHz steps) UHF-Hi: .......................... 470 MHz - 512 MHz (in 12.5kHz steps) Channels of Operation.............Any 16 channels in any band combination
MHz. 1000 MHz = 1 GHz.
600 MHz or 800 MHz
Uplink --> 890 MHz - 915 MHz Downlink --> 935 MHz - 960 MHz
100 MHz
250 mhz fo sure...