Interconnect Maximum Effective Data Rates

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Last Modified 2021-11-09 14:34 -0500

These tables list the maximum effective data rates, in a single data flow direction, for various data interconnect protocols. A best effort attempt has been made to exclude physical link encoding overheads where appropriate.

PCI Express 4.0	Maximum Effective Data Rate (One Direction)
	(10242 Bytes) MiB/s	(10002 Bytes) MB/s	(10003 Bytes) Gb/s	Notes
x1	1,878	1,969	15.8
x2	3,756	3,938	31.5	NVMe M.2 (M+B Key)
x4	7,512	7,877	63.0	NVMe M.2 (M Key) U.2/U.3 (1x4 or 2x2) E1.S/E1.L (typical) E3
x8	15,024	15,754	126.0	E1.S/E1.L (max) E3
x16	30,048	31,508	252.1	E3 (max)

PCI Express 3.0	Maximum Effective Data Rate (One Direction)
	(10242 Bytes) MiB/s	(10002 Bytes) MB/s	(10003 Bytes) Gb/s	Notes
x1	939	985	7.9
x2	1,878	1,969	15.8	NVMe M.2 (M+B Key)
x4	3,756	3,938	31.5	NVMe M.2 (M Key) U.2/U.3 (1x4 or 2x2)
x8	7,512	7,877	63.0
x16	15,024	15,754	126.0

SAS-4 (24 Gb/s)	Maximum Effective Data Rate (One Direction)
	(10242 Bytes) MiB/s	(10002 Bytes) MB/s	(10003 Bytes) Gb/s
x1	2,289	2,400	19.2
x4	9,155	9,600	76.8
x8	18,311	19,200	153.6

SAS-3 (12 Gb/s)	Maximum Effective Data Rate (One Direction)
	(10242 Bytes) MiB/s	(10002 Bytes) MB/s	(10003 Bytes) Gb/s
x1	1,144	1,200	9.6
x4	4,578	4,800	38.4
x8	9,152	9,600	76.8

SAS-2 & SATA 3.0 (6 Gb/s)	Maximum Effective Data Rate (One Direction)
	(10242 Bytes) MiB/s	(10002 Bytes) MB/s	(10003 Bytes) Gb/s
x1	572	600	4.8
x4	2,289	2,400	19.2
x8	4,576	4,800	38.4

Ethernet	Maximum Effective Data Rate (One Direction)
	(10242 Bytes) MiB/s	(10002 Bytes) MB/s	(10003 Bytes) Gb/s
1 GbE	119	125	1.0
10 GbE	1,192	1,250	10.0
25 GbE	2,980	3,125	25.0
40 GbE	4,768	5,000	40.0
100 GbE	11,920	12,500	100.0
200 GbE	23,842	25,000	200.0
400 GbE	47,684	50,000	400.0

Fibre Channel	Maximum Effective Data Rate (One Direction)
	(10242 Bytes) MiB/s	(10002 Bytes) MB/s	(10003 Bytes) Gb/s
8 Gb	797	836	6.7
16 Gb	1,594	1,672	13.4
32 Gb	3,275	3,434	27.5