AddOn 2GB 200-Pin DDR2 SO-DIMM Unbuffered 667 RAM

AddOn 2GB 200-Pin DDR2 SO-DIMM Unbuffered 667 (PC2 5200) Dual Rank M25664F50-AA

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AddOn - Memory Upgrades 2GB 200-Pin DDR2 SO-DIMM Unbuffered DDR2 667 (PC2 5200) Dual Rank Memory Model M25664F50-AA Voltage: 1.80V Compatible System: Dell CAS Latency: 5

AddOn 2GB 200-Pin DDR2 SO-DIMM Unbuffered 667 image 1

Specifications Overview

Model	M25664F50-AA
Type	200-pin DDR2 SODIMM
Speed	DDR2-667 MHz
Size	2GB (1 x 2GB)
CAS Latency	5
First Word Latency	14.99 ns
Voltage	1.8 V
Heat Spreader	No
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)

	667	800
5	14.99	12.50
6	17.99	15.00

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.