Remember, just because a connection has the theoretical potential for a certain speed, doesn’t mean it will reach that speed. (Effectively 3940 MB/s because it uses 4x PCIe 3.0 lanes) (Effectively 31.5 Gb/s because it uses 4x PCIe 3.0 lanes) (Effectively 16 Gb/s because it uses 4x PCIe 2.0 lanes) The following are various devices, slots, and connectors and their equivalent theoretical speeds: Converting between transfer speeds can get especially confusing because 1 byte=8 bits (rather than a multiple of 10). This leads to confusion regarding how fast each part of the connection actually goes. Computer Components usually use Megabits or Gigabits per Second to convey how fast data flows and Device Connectors, Bus Speeds, and Controllers are usually spoken of in terms of megabytes or gigabytes per second to convey how fast data flows. Sometimes data transfer speed (or especially access speed) is written as bytes, however. These transfer speeds are shortened to Mb/s or Mbps. What do all the various hard drive and device connector speeds mean? At what speed can I expect my data to actually flow? The confusion with connector speeds and how fast a PC crunches data is partially because of the confusion between Megabits (Mb), Gigabits (Gb), Megabytes (MB), and Gigabytes (GB).ĭata SIZE is usually written in bytes - either as Megabytes (1000 bytes), Gigabytes (1000 Megabytes), or Terabytes (1000 Gigabytes or 1,000,000 Megabytes).ĭata TRANSFER SPEEDS are usually written in bits – either as Megabits per second, Gigabits per second, or Terabits per second. If you have any questions feel free to contact us.Īrticle Date: 01-19-2017 Computer Device and Connector Bottlenecks Hard Drive & Device Connector Speeds Warning: Technology changes very quickly so it is always recommended that you look at the date when the article was last updated.
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