Corsair CMX8GX3M2B1333C9 8GB (2 x 4 GB) DDR3 1333 MHz RAM

Corsair CMX8GX3M2B1333C9 8GB (2 x 4 GB) DDR3 1333 MHz Unbuffered CL9 DIMM Memory Kit for Intel Core i3/i5/i7 Dual Channel (PC3 10600) 1.5V

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High performance XMS 8GB kit for the Intel Core i7, i5 and i3 Dual Channel processors and platforms
Fast 1333MHz performance using 8GB of memory
Low 9-9-9-24 latency
Memory Type: DDR3; Speed: 1333MHz

Corsair CMX8GX3M2B1333C9 8GB (2 x 4 GB) DDR3 1333 MHz image 1

Corsair CMX8GX3M2B1333C9 8GB (2 x 4 GB) DDR3 1333 MHz image 2

Corsair CMX8GX3M2B1333C9 8GB (2 x 4 GB) DDR3 1333 MHz image 3

Corsair CMX8GX3M2B1333C9 8GB (2 x 4 GB) DDR3 1333 MHz image 4

Specifications Overview

Model	CMX8GX3M2B1333C9
Release Date	June 2014 * First availability for purchase, it may not correspond to the actual market launch date.
Type	240-pin DDR3 DIMM
Speed	DDR3-1333 MHz
Size	8GB (2 x 4GB)
CAS Latency	9
Timing	9-9-9-24
First Word Latency	13.5 ns
Voltage	1.5 V
Heat Spreader	Yes
ECC Support	No

	Old Name	Current Name	Branding	Data Speed	Port
USB 2.0	USB 2.0	USB 2.0	Hi-Speed USB	480 Mbit/s	diverse
USB 3.0	USB 3.1 Gen 1	USB 3.2 Gen 1x1	SuperSpeed USB	5 Gbit/s	diverse
USB 3.1	USB 3.1 Gen 2	USB 3.2 Gen 2x1	SuperSpeed USB 10Gbps	10 Gbit/s	diverse
USB 3.2	USB 3.2 Gen 2x2	USB 4.0 Gen 2x2	USB4 20Gbps	20 Gbit/s	only USB-C
USB4	USB 4.0 Gen 3x2	USB4 1.0	USB4 40Gbps	40 Gbit/s	only USB-C
USB4v2	USB 4.0 Gen 4	USB4 2.0	USB4 80Gbps	80-120 Gbit/s	only USB-C

RAM First Word Latency Table (nanoseconds)

Latency is measured in nanoseconds, which is a combination of frequency and CAS. Both frequency increases and latency decreases result in better system performance (when latency is the same, always prefer higher frequency if possible).

Frequency (MT/s)

	1066	1333	1600	1866	2000	2133	2400	2666	2800	2933	3000	3100	3200
7	13.13	10.50	8.75	7.50	7.00	6.56	5.83	5.25	5.00	4.77	4.67	4.52	4.38
8	15.01	12.00	10.00	8.57	8.00	7.50	6.67	6.00	5.71	5.46	5.33	5.16	5.00
9	16.89	13.50	11.25	9.65	9.00	8.44	7.50	6.75	6.43	6.14	6.00	5.81	5.63
10	18.76	15.00	12.50	10.72	10.00	9.38	8.33	7.50	7.14	6.82	6.67	6.45	6.25
11	20.64	16.50	13.75	11.79	11.00	10.31	9.17	8.25	7.86	7.50	7.33	7.10	6.88
12	22.51	18.00	15.00	12.86	12.00	11.25	10.00	9.00	8.57	8.18	8.00	7.74	7.50
13	24.39	19.50	16.25	13.93	13.00	12.19	10.83	9.75	9.29	8.86	8.67	8.39	8.13
14	26.27	21.01	17.50	15.01	14.00	13.13	11.67	10.50	10.00	9.55	9.33	9.03	8.75
15	28.14	22.51	18.75	16.08	15.00	14.06	12.50	11.25	10.71	10.23	10.00	9.68	9.38
16	30.02	24.01	20.00	17.15	16.00	15.00	13.33	12.00	11.43	10.91	10.67	10.32	10.00
17	31.89	25.51	21.25	18.22	17.00	15.94	14.17	12.75	12.14	11.59	11.33	10.97	10.63
18	33.77	27.01	22.50	19.29	18.00	16.88	15.00	13.50	12.86	12.27	12.00	11.61	11.25
19	35.65	28.51	23.75	20.36	19.00	17.82	15.83	14.25	13.57	12.96	12.67	12.26	11.88

CAS (clock cycles) Lower latency means faster memory.

Distribution of First Word Latencies for Similar RAM Modules

The histogram below shows the distribution of first word latencies (in nanoseconds) for all RAM modules of the same DDR type and frequency in our database. Each bar represents the number of modules that fall within a specific latency range. The highlighted bar indicates the latency of the currently selected RAM module.