MT/sec

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MT/sec

(MegaTransfers per SECond) A measurement of bus and channel speed in millions of "effective" cycles per second. Also written as "MT/s," it is a rating of the actual, delivered speed rather than the frequency of the clock. For example, if timing is derived from both the rising and falling edges of the cycle rather than one complete cycle, a 400 MHz clock yields 800 MT/sec.

Gigatransfers
For "gigatransfers," substitute the M with a G (GT/sec, GT/s). For example, at a double data rate, an 800 MHz clock yields 1.6 GT/sec.
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With the introduction of DDR4 memory technology, dynamic random access memory (DRAM) data rates now can reach 3.2 gigatransfers per second.
PCIe 3.0 can move data at 8 gigatransfers per second, which is a significant improvement over PCIe 2.0, which has a transfer speed of 5 gigatransfers per second.
The draft PCI Express 3.0 specification will extend PCI Express data rates up to 8.0 GigaTransfers per second per lane, doubling the host bandwidth that was achievable with previous generations.
PLX's PCI Express Gen 2 switches are fully compliant with the PCI-SIG(r) PCIe base specification 2.0, which doubles the interconnect bit rate over its predecessor, to 5 GT/s (GigaTransfers per second) from 2.5 GT/s, and are backward compatible with Gen 1, thus allowing ease of migration with existing designs.
PCIe 3.0 can move data at 8 gigatransfers per second, which is faster than PCIe 2.0, which had a speed of 5 gigatransfers per second.
In addition, AMD HyperTransport 3.0 technology (HT3) increases interconnect rates from 2 gigatransfers per second (GT/s) up to a maximum 4.8GT/s.