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RAM Speed according to Memtest86+

Here are some speed results for RAM according to Memtest86+ on some machines that I have run. Note that the reported speed varies between runs by a few percent.

Thinkpad 600e PentiumII 400Mhz PC-66 RAM (2 DIMMs) 174MB/s
Compaq P3-866MHz PC133 RAM (3 DIMMs, 2*128 + 256) 190MB/s
Compaq Athlon 1GHz PC133 RAM (3 DIMMs) 219MB/s
Compaq P3-800MHz PC133 RAM (1 DIMM) 270MB/s
Compaq P3-800MHz PC133 RAM (3 DIMMs, 2*128 + 256) 240MB/s
Compaq P4 1.5GHz PC133 RAM (3 DIMMs) 486MB/s
Compaq P4 1.5GHz PC133 RAM (1 or 2 DIMMs) 490MB/s
EeePC 701, DDR2-665 PC2-5300 running at DDR2-333 speed 798MB/s
HP Celeron 1.8GHz PC2100/DDR266 (1 DIMM) 824MB/s
HP Celeron 2.4GHz PC2100/DDR266 RAM (2 DIMMs) 984MB/s
Celeron D (32bit) 2.93GHz PC2400/DDR300 PC3200 RAM 1,140MB/s
HP Celeron 2.4GHz PC2700/DDR333 RAM (2 DIMMs) 1,027MB/s
HP Celeron 2.4GHz PC2700/DDR333 RAM (2 DIMMs) 1,375MB/s
Dell PowerEdge T105 Dual-core Opteron 1212 (2GHz) single DDR2-667 ECC RAM 1,670MB/s
Dell PowerEdge T105 Dual-core Opteron 1212 (2GHz) pair of DDR2-667 ECC RAM 1,826MB/s
NEC Pentium E2160 1.8GHz DDR663 (two mismatched DIMMs) 2,307MB/s
IBM Pentium E2160 1.8GHz DDR2-667 PC2-5300 (single DIMM) 2,371MB/s
IBM Pentium E2160 1.8GHz PC2-4200 (paired DIMMs) 2,436MB/s
NEC Pentium E4600 2.4GHz DDR2-667 PC2-5300 (single DIMM) 2,528MB/s
NEC Pentium D 2.8GHz DDR 533 (unpaired DIMMS) 1,600MB/s
NEC Pentium D 2.8GHz DDR 533 (paired DIMMS) 2,600MB/s
Thinkpad T61 DDR2-665 PC2-5300 (single DIMM) 2,023MB/s
Thinkpad T61 DDR2-665 PC2-5300 (paired or mismatched DIMMs) 2,823MB/s
Core Gen2 2492MHz 3,804MB/s
Core Gen2 2492MHz 2 DIMMs 3,930MB/s
Q8400 2*PC6400 4,830MB/s
Dell PowerEdge T320 E5-2430 2.2GHz, DDR3-1600 PC3-12800 (single DIMM) 7,692MB/s
Intel X3450 2.67GHz, DDR3-1066 (4 DIMMs) 10.0GB/s
Thinkpad X1 Yoga Gen3 i5-8350U 1.7GHz, LPDDR3-2133 (paired DIMMs) Battery/AC 7,140MB/s 10.3GB/s
Dell PowerEdge T320 E5-2430 2.2GHz, DDR3-1600 PC3-12800 (pair DIMMs) 11.3GB/s
Dell Lattitude 5590 laptop I5-8350U 1.7GHz, DDR4-2400 PC4-19200 (paired DIMMs) 12.2GB/s
Dell PowerEdge T30 Core E3-1225 3.3GHz, DDR4-2133 PC4-17000 (single DIMM) 12.5GB/s
Dell PowerEdge T320 E5-2430 2.2GHz, DDR3-1600 PC3-12800 (3 DIMMs) 13.5GB/s
Dell Latitude 7480 i7-7660U, DDR4-2400 (paired DIMMs) 13.7GB/s
Dell Lattitude 7410 Laptop i7-10610U DDR4 14.6GB/s
Dell Lattitude 7400 2in1 Laptop i7-8665U DDR3 14.8GB/s
HP Z640 E5-1650v3, DDR4 (pair 2133+ DIMMs) 15.2GB/s
HP Z640 E5-1650v3, DDR4 (four 2133+ DIMMs) 15.3GB/s
HP Z640 E5-1650v3, DDR4 (paired 2133+ LRDIMMs) 15.3GB/s
Thinkpad X1 Carbon Gen5 i5-6300U 2.40GHz, DDR3-1867 (paired DIMMs) Battery/AC 7,640MB/s 16.2GB/s
i7-2600 3.4GHz, DDR3-1333 PC3-10600 (paired DIMMs) 16.6GB/s
AMD Ryzen 5 3600 DDR4-3200 (4*8G DIMMs) 17.3GB/s
Dell PowerEdge T110-II Core i3-3220 3.3GHz, DDR3-1600 PC3-12800 (paired DIMMs) 17.9GB/s
Dell Precision 3620 i7-6700, DDR4-2400 PC4-19200 (paired DIMMs) 20.5GB/s

The Wikipedia page on SDRAM lists the theoretical speeds and the various names of the different types of DDR RAM (each type seems to have at least two names).

DDR266 theoretically can do 2100MB/s, but I’ve only seen it do 984MB/s (with two DIMMs).

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