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64.0GB
32.0GB

Special Offers: Free US Shipping » Total Capacity: 64.0GB » Capacity Per Module: 32.0GB

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64.0GB
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System Compatibility

Mac (9) PC (21)

Quantity

Set of 2 (29) Set of 4 (1)

Form Factor

DIMM (6) LRDIMM (3) RDIMM (8) SO-DIMM (13)

PC Speed

PC4-25600 (5) PC4-23400 (6) PC4-21300 (11) PC4-19200 (6) PC4-17000 (2)

Frequency

3200MHz (5) 2933MHz (6) 2666MHz (11) 2400MHz (6) 2133MHz (2)

Error Correction

ECC (18) Non-ECC (12)

Registration

Registered (8) Non-Registered (19) Load Reduced (3)

Rating

5 stars (2) 4 stars and up (8) 1 star and up (9)

Price

$300 to $400 (22) $400 to $500 (7) $750 to $1000 (1)
64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin SO-DIMM Memory Upgrade Kit for Mac

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin SO-DIMM Memory Upgrade Kit for Mac

Memory upgrade kit for iMac (2019-2020) and Mac mini (2018) models and PCs which utilize PC4-21300 SO-DIMM. Lifetime OWC Limited Warranty.

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Reviews (504)
In Stock

Mfr P/N: 2666DDR4S64P
OWC SKU: OWC2666DDR4S64P

 
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$371.91
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Add Parallels Desktop Pro Edition for only $29.00!
64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-pin ECC SO-DIMM Memory Upgrade Kit

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-pin ECC SO-DIMM Memory Upgrade Kit

DDR4-2666, CL19, ECC, SO-DIMM, 260-pin, 1.2V, 2Rx8, PC4-21300. For Laptops, All-in-One Systems, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2C6D41R8064P
OWC SKU: OWC2C6D41R8064P

 
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$409.92
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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin CL17 SO-DIMM Memory Upgrade Kit for 21.5" iMac with Retina 4K Display (2019)

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin CL17 SO-DIMM Memory Upgrade Kit for 21.5" iMac with Retina 4K Display (2019)

For 21.5" iMac with Retina 4K Display (2019) complete with screen adhesive and all required installation tools. Lifetime OWC Limited Warranty.

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Reviews (39)
In Stock

Mfr P/N: 2621DDR4S64K
OWC SKU: OWC2621DDR4S64K

 
Only
$381.91
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Add Parallels Desktop Pro Edition for only $29.00!
64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit for Mac

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit for Mac

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2666R3M64
OWC SKU: OWC2666R3M64

 
Only
$351.72
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Add Parallels Desktop Pro Edition for only $29.00!
128.0GB (4 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit for Mac

128.0GB (4 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit for Mac

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

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Reviews (30)
In Stock

Mfr P/N: 2933R3M128
OWC SKU: OWC2933R3M128

 
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$752.93
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Add Parallels Desktop Pro Edition for only $29.00!
64.0GB (2 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit for Mac

64.0GB (2 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit for Mac

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

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Reviews (30)
In Stock

Mfr P/N: 2933R3M64
OWC SKU: OWC2933R3M64

 
Only
$376.85
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Add Parallels Desktop Pro Edition for only $29.00!
64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 260-Pin SO-DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 260-Pin SO-DIMM Memory Upgrade Kit for PC

DDR4-3200, CL22, Non-ECC, SO-DIMM, 260-Pin, 1.2V, 2Rx8, PC4-25600. For Laptops, All-in-One Systems, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 3S2D42R8064P
OWC SKU: OWC3S2D42R8064P

 
Only
$354.20
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64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 260-Pin ECC SO-DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 260-Pin ECC SO-DIMM Memory Upgrade Kit for PC

DDR4-3200, CL22, ECC, SO-DIMM, 260-Pin, 1.2V, 2Rx8, PC4-25600. For Laptops, All-in-One Systems, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 3C2D42R8064P
OWC SKU: OWC3C2D42R8064P

 
Only
$409.92
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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin CL17 SO-DIMM Memory Upgrade Kit for 21.5" iMac with Retina 4K Display (2019)

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin CL17 SO-DIMM Memory Upgrade Kit for 21.5" iMac with Retina 4K Display (2019)

For 21.5" iMac with Retina 4K Display (2019). Includes adhesive for resealing the display. Lifetime OWC Limited Warranty.

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Reviews (39)
In Stock

Mfr P/N: 2621DDR4S64P
OWC SKU: OWC2621DDR4S64P

 
Only
$381.91
Add to Cart
Add Parallels Desktop Pro Edition for only $29.00!
64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit w/ Installation Tools for Mac

64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit w/ Installation Tools for Mac

Complete memory upgrade kit with all required installation tools for 21.5" iMac w/ Retina 4K (Mid 2017). *NOT compatible with 27" or 21.5" non-Retina* Lifetime OWC Limited Warranty.

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Reviews (75)
In Stock

Mfr P/N: 2421DDR4S64K
OWC SKU: OWC2421DDR4S64K

 
Only
$381.91
Add to Cart
Add Parallels Desktop Pro Edition for only $29.00!
64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit for Mac

64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit for Mac

Memory upgrade kit with screen adhesive for 21.5" iMac w/ Retina 4K (Mid 2017). *NOT compatible with 27" or 21.5" non-Retina* Lifetime OWC Limited Warranty.

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Reviews (75)
In Stock

Mfr P/N: 2421DDR4S64P
OWC SKU: OWC2421DDR4S64P

 
Only
$381.91
Add to Cart
Add Parallels Desktop Pro Edition for only $29.00!
64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit for Mac

64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit for Mac

Memory upgrade kit for 21.5" and 27" iMac Retina models (Mid 2017), Mac mini (Late 2018), and PCs that utilize PC4-19200 SO-DIMM. Lifetime OWC Limited Warranty.

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Reviews (262)
In Stock

Mfr P/N: 2400DDR4S64P
OWC SKU: OWC2400DDR4S64P

 
Only
$371.91
Add to Cart
Add Parallels Desktop Pro Edition for only $29.00!
64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 288-Pin DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 288-Pin DIMM Memory Upgrade Kit for PC

DDR4-3200, CL22, Non-ECC, DIMM, 288-Pin, 1.2V, 2Rx8, PC4-25600. For Desktops. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 3U2D42R8064P
OWC SKU: OWC3U2D42R8064P

 
Only
$354.20
Add to Cart
64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 288-Pin ECC RDIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 288-Pin ECC RDIMM Memory Upgrade Kit for PC

DDR4-3200, CL22, ECC, RDIMM, 288-Pin, 1.2V, 2Rx4, PC4-25600. For Workstations, Servers, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 3R2D42R4064P
OWC SKU: OWC3R2D42R4064P

 
Only
$350.92
Add to Cart
64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 288-Pin ECC DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 3200MHz DDR4 PC4-25600 288-Pin ECC DIMM Memory Upgrade Kit for PC

DDR4-3200, CL22, ECC, DIMM, 288-Pin, 1.2V, 2Rx8, PC4-25600. For Workstations, Servers, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 3E2D42R8064P
OWC SKU: OWC3E2D42R8064P

 
Only
$409.92
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64.0GB (2 x 32GB) OWC 2933MHz DDR4 PC4-23400 288-Pin DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2933MHz DDR4 PC4-23400 288-Pin DIMM Memory Upgrade Kit for PC

DDR4-2933, CL21, Non-ECC, DIMM, 288-Pin, 1.2V, 2Rx8, PC4-23400. For Desktops. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2U9D42R8064P
OWC SKU: OWC2U9D42R8064P

 
Only
$354.20
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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 288-Pin DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 288-Pin DIMM Memory Upgrade Kit for PC

DDR4-2666, CL19, Non-ECC, DIMM, 288-Pin, 1.2V, 2Rx8, PC4-21300. For Desktops. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2U6D42R8064P
OWC SKU: OWC2U6D42R8064P

 
Only
$354.20
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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin SO-DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin SO-DIMM Memory Upgrade Kit for PC

DDR4-2666, CL19, Non-ECC, SO-DIMM, 260-Pin, 1.2V, 2Rx8, PC4-21300. For Laptops, All-in-One Systems, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2S6D42R8064P
OWC SKU: OWC2S6D42R8064P

 
Only
$354.20
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64.0GB (2 x 32GB) OWC 2400MHz DDR4 PC4-19200 260-Pin SO-DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2400MHz DDR4 PC4-19200 260-Pin SO-DIMM Memory Upgrade Kit for PC

DDR4-2400, CL17, Non-ECC, SO-DIMM, 260-Pin, 1.2V, 2Rx8, PC4-19200. For Laptops, All-in-One Systems, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2S4D42R8064P
OWC SKU: OWC2S4D42R8064P

 
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$354.20
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64.0GB (2 x 32GB) OWC 2933MHz DDR4 PC4-23400 288-Pin ECC RDIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2933MHz DDR4 PC4-23400 288-Pin ECC RDIMM Memory Upgrade Kit for PC

DDR4-2933, CL21, ECC, RDIMM, 288-Pin, 1.2V, 2Rx4, PC4-23400. For Workstations, Servers, and NAS Systems. Lifetime OWC Limited Warranty.

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Ships in 2-3 Days

Mfr P/N: 2R9D42R4064P
OWC SKU: OWC2R9D42R4064P

 
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$358.90
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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 288-Pin ECC RDIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 288-Pin ECC RDIMM Memory Upgrade Kit for PC

DDR4-2666, CL19, ECC, RDIMM, 288-Pin, 1.2V, 2Rx4, PC4-21300. For Workstations, Servers, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2R6D42R4064P
OWC SKU: OWC2R6D42R4064P

 
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$334.97
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64.0GB (2 x 32GB) OWC 2400MHz DDR4 PC4-19200 288-Pin ECC RDIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2400MHz DDR4 PC4-19200 288-Pin ECC RDIMM Memory Upgrade Kit for PC

DDR4-2400, CL17, ECC, RDIMM, 288-Pin, 1.2V, 2Rx4, PC4-19200. For Workstations, Servers, and NAS Systems. Lifetime OWC Limited Warranty.

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Mfr P/N: 2R4D42R4064P
OWC SKU: OWC2R4D42R4064P

 
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$334.97
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64.0GB (2 x 32GB) OWC 2133MHz DDR4 PC4-17000 288-Pin ECC RDIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2133MHz DDR4 PC4-17000 288-Pin ECC RDIMM Memory Upgrade Kit for PC

DDR4-2133, CL15, ECC, RDIMM, 288-Pin, 1.2V, 2Rx4, PC4-17000. For Workstations, Servers, and NAS Systems. Lifetime OWC Limited Warranty.

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Mfr P/N: 2R1D42R4064P
OWC SKU: OWC2R1D42R4064P

 
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$334.97
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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 288-Pin ECC LRDIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 288-Pin ECC LRDIMM Memory Upgrade Kit for PC

DDR4-2666, CL19, ECC, LRDIMM, 288-Pin, 1.2V, 4Rx4, PC4-21300. For Servers and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2L6D44R4064P
OWC SKU: OWC2L6D44R4064P

 
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$311.04
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64.0GB (2 x 32GB) OWC 2400MHz DDR4 PC4-19200 288-Pin ECC LRDIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2400MHz DDR4 PC4-19200 288-Pin ECC LRDIMM Memory Upgrade Kit for PC

DDR4-2400, CL17, ECC, LRDIMM, 288-Pin, 1.2V, 4Rx4, PC4-19200. For Servers and NAS Systems. Lifetime OWC Limited Warranty.

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Mfr P/N: 2L4D44R4064P
OWC SKU: OWC2L4D44R4064P

 
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$334.97
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64.0GB (2 x 32GB) OWC 2133MHz DDR4 PC4-17000 288-Pin ECC LRDIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2133MHz DDR4 PC4-17000 288-Pin ECC LRDIMM Memory Upgrade Kit for PC

DDR4-2133, CL15, ECC, LRDIMM, 288-Pin, 1.2V, 4Rx4, PC4-17000. For Servers and NAS Systems. Lifetime OWC Limited Warranty.

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Mfr P/N: 2L1D44R4064P
OWC SKU: OWC2L1D44R4064P

 
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$334.97
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64.0GB (2 x 32GB) OWC 2933MHz DDR4 PC4-23400 288-Pin ECC DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2933MHz DDR4 PC4-23400 288-Pin ECC DIMM Memory Upgrade Kit for PC

DDR4-2933, CL21, ECC, DIMM, 288-Pin, 1.2V, 2Rx8, PC4-23400. For Workstations, Servers, and NAS Systems. Lifetime OWC Limited Warranty.

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Mfr P/N: 2E9D42R8064P
OWC SKU: OWC2E9D42R8064P

 
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$409.92
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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 288-Pin ECC DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 288-Pin ECC DIMM Memory Upgrade Kit for PC

DDR4-2666, CL19, ECC, DIMM, 288-Pin, 1.2V, 2Rx8, PC4-21300. For Workstations, Servers, and NAS Systems. Lifetime OWC Limited Warranty.

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In Stock

Mfr P/N: 2E6D42R8064P
OWC SKU: OWC2E6D42R8064P

 
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$409.92
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64.0GB (2 x 32GB) OWC 2933MHz DDR4 PC4-23400 260-Pin ECC SO-DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2933MHz DDR4 PC4-23400 260-Pin ECC SO-DIMM Memory Upgrade Kit for PC

DDR4-2933, CL21, ECC, SO-DIMM, 260-Pin, 1.2V, 2Rx8, PC4-23400. For Laptops, All-in-One Systems, and NAS Systems. Lifetime OWC Limited Warranty.

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Mfr P/N: 2C9D42R8064P
OWC SKU: OWC2C9D42R8064P

 
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$409.92
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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin ECC SO-DIMM Memory Upgrade Kit for PC

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin ECC SO-DIMM Memory Upgrade Kit for PC

DDR4-2666, CL19, ECC, SO-DIMM, 260-Pin, 1.2V, 2Rx8, PC4-21300. For Laptops, All-in-One Systems, and NAS Systems. Lifetime OWC Limited Warranty.

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Mfr P/N: 2C6D42R8064P
OWC SKU: OWC2C6D42R8064P

 
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$409.92
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