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G.SKILL 48GB (2x24GB) Trident Z5 Series DDR5 8400 MT/s 40-52-52-134 - F5-8400J4052G24GX2-TZ5K
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  • $1,480.90 
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G.Skill Ripjaws V F4-3600C18D-32GVW memory module 32 GB 2 x 16 GB DDR4 3600 MHz
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  • $579.90 
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MICRON MIC#CT51264BD160B 4GB DDR3 1600 UDIMM 240pin
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  • $14.86 
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Micron 8GB (2X4GB) DDR3-1333 MT16JTF51264AZ-1G4H1 PC3-10600U UDIMM Module RAM Memory 1.5V
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Micron 8GB (2X4GB) DDR3-1333 MT16JTF51264AZ-1G4H1 PC3-10600U UDIMM Module RAM Memory 1.5V
  • CAS Latency: CL9
  • Voltage: 1.50V
  • Buffered/Registered: Unbuffered
  • Model #: MT16JTF51264AZ-1G4H1 X2
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  • $32.00 
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Micron 1 GB MT8HTF12864AY-667G1 DDR2 667 CL5 PC2-5300U-555-12-ZZ Desktop Memory
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Refurbished Micron 1 GB MT8HTF12864AY-667G1 DDR2 667 CL5 PC2-5300U-555-12-ZZ Desktop Memory
  • CAS Latency: CL5
  • Voltage: 1.8V
  • Multi-channel Kit: Dual Channel Kit
  • Chipset: Major Brand Chipset
  • Model #: MT8HTF12864AY-667G
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  • $13.92 
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MICRON MIC#CT8G3ERSLD8160B 8GB DDR3L 1600 MTs 240p
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  • $39.12 
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Micron 8GB (2X4GB) MT8JTF51264AZ-1G6E1 1RX8 PC3-12800U-11-11-A1 UDIMM DDR3-1600 Desktop Memory RAM  1.5V
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Micron 8GB (2X4GB) MT8JTF51264AZ-1G6E1 1RX8 PC3-12800U-11-11-A1 UDIMM DDR3-1600 Desktop Memory RAM 1.5V
  • CAS Latency: CL11
  • Voltage: 1.50V
  • Buffered/Registered: Unbuffered
  • Model #: MT8JTF51264AZ-1G6E1 X2
Micron CT51264BD160B.C16FPD 4GB DDR3 PC3-10600U 1333MHz 1.5V CL9 DIMM Desktop PC Memory For Crucial
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Micron CT51264BD160B.C16FPD 4GB DDR3 PC3-10600U 1333MHz 1.5V CL9 DIMM Desktop PC Memory For Crucial
  • CAS Latency: CL9
  • Voltage: 1.50V
  • Buffered/Registered: Unbuffered
  • Model #: CT51264BD160B.C16FP
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  • $19.18 
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Micron CT2K51264BD160B 8GB KIT4GBX2 DDR3L 240PIN UDIMM
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  • $25.91 
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CT25664BD160B  Crucial 2GB DDR3L-1600(PC3L-12800) UDIMM •1.35V •1600MT/s •CL-11 •Unbuffered •NON-ECC •240PIN Desktop Memory
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  • $29.00 
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8GB(2X4GB) DDR3 1600MHz Desktop PC RAM Micron MT8JTF51264AZ-1G6E1 ~ PC3-12800U Memory 240 pin 1Rx8 DIMM VAT
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MICRON MT8HTF12864AZ-667H1 1GB DESKTOP DIMM DDR2 PC5300(667) UNBUF 1.8V 1RX8 240P 128MBX64 128MBX8 CL6 CT12864AA667
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Refurbished MICRON MT8HTF12864AZ-667H1 1GB DESKTOP DIMM DDR2 PC5300(667) UNBUF 1.8V 1RX8 240P 128MBX64 128MBX8 CL6 CT12864AA667
  • CAS Latency: CL5
  • Voltage: 1.8V
  • Multi-channel Kit: Dual Channel Kit
  • Chipset: Micron Chipset
  • Model #: MT8HTF12864AZ-5300
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  • $14.92 
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Ballistix Tactical 1x8GB 240-Pin DDR3 SDRAM DDR3L 1600 (PC3L 12800) Low Profile Desktop Memory Model BLT8G3D1608ET3LX0
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Refurbished Ballistix Tactical 1x8GB 240-Pin DDR3 SDRAM DDR3L 1600 (PC3L 12800) Low Profile Desktop Memory Model BLT8G3D1608ET3LX0
  • CAS Latency: CL11
  • Voltage: 1.35V
  • Multi-channel Kit: Dual Channel Kit
  • Timing: 8-8-8-24
  • Model #: BLT8G3D1608ET3LX0.16
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  • $39.00 
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CT256M4SSD2 Crucial M4 2.5" 256GB SATA III MLC Internal Solid State Drive (SSD)
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CT256M4SSD2 Crucial M4 2.5" 256GB SATA III MLC Internal Solid State Drive (SSD)
  • CAS Latency: CL11
  • Color: Green
  • LED Color: None
  • Model #: 51264BD160B
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  • $88.92 
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HyperX FURY 8GB (2 x 4GB) DDR3 1866 Desktop Memory Model HX318C10FRK2/8
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Refurbished HyperX FURY 8GB (2 x 4GB) DDR3 1866 Desktop Memory Model HX318C10FRK2/8
  • CAS Latency: CL10
  • Voltage: 1.50V
  • Multi-channel Kit: Dual Channel Kit
  • Buffered/Registered: Unbuffered
  • Model #: HX318C10FRK2/8
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  • $44.00 
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Micron MTA8ATF51264AZ-2G1A2 4GB 1RX8 PC4-2133P-UAB-11 For Desktop
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  • $50.79 
  • $9.99 Shipping
Hynix HMT351U6EFR8C-PB 4GB PC3-12800 DDR3 Desktop Memory P/N 655410-150
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  • $42.73 
  • $9.99 Shipping
Hynix DDR2-667 4GB/256x4 ECC FB-DIMM Original Server Memory HYMP151F72CP4N3-Y5
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  • $40.71 
  • $9.99 Shipping
KingBank Computer Desktop Memory Ram DDR4 32GB (2 x 16GB) 3200MHz CL16 1.35V with Heatsink for Desktop Computer High Performance Gaming Office,Silver
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KingBank Computer Desktop Memory Ram DDR4 32GB (2 x 16GB) 3200MHz CL16 1.35V with Heatsink for Desktop Computer High Performance Gaming Office,Silver
  • CAS Latency: CL16
  • Timing: 16-20-20-38
  • Recommend Use: AMD & Intel Compatible
  • Buffered/Registered: Unbuffered
  • Model #: SLDDR416G3200*2
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  • $499.00 
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AGI UD128 4GB DDR3 UDIMM 1600MHz CL11, 240-pin for Desktop Memory Model RAM Module Upgrade AGI160004UD128
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  • $60.00 
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OWC 16GB Replacement for QNAP RAM-16GDR4-LD-2133 16GB DDR4 2133 PC4-17000 CL15 2Rx8 288-pin 1.2V Non-ECC UDIMM Memory RAM Module Upgrade
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  • $181.48 
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OWC 16GB Replacement for QNAP RAM-16GDR4T0-UD-3200 16GB DDR4 3200 PC4-25600 CL22 2Rx8 288-pin 1.2V Non-ECC UDIMM Memory RAM Module Upgrade
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  • $181.48 
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OWC 8GB Replacement for QNAP RAM-8GDR4ECT0-UD-2666 8GB DDR4 2666 PC4-21300 CL19 1Rx8 288-pin 1.2V ECC Unbuffered UDIMM Memory RAM Module Upgrade
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OWC 8GB Replacement for QNAP RAM-8GDR4ECT0-UD-2666 8GB DDR4 2666 PC4-21300 CL19 1Rx8 288-pin 1.2V ECC Unbuffered UDIMM Memory RAM Module Upgrade
  • CAS Latency: CL19
  • Voltage: 1.2V
  • Recommend Use: Workstations, Servers, and NAS Systems
  • ECC: Yes
  • Model #: OWC2E6D41R808GB-B579-SF
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  • $112.48 
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OWC 8GB Replacement for QNAP RAM-8GDR4-LD-2133 8GB DDR4 2133 PC4-17000 CL15 2Rx8 288-pin 1.2V Non-ECC UDIMM Memory RAM Module Upgrade
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  • $89.98 
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OWC 4GB Replacement for QNAP RAM-4GDR4-LD-2133 4GB DDR4 2133 PC4-17000 CL15 1Rx8 288-pin 1.2V Non-ECC UDIMM Memory RAM Module Upgrade
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  • $52.48 
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OWC 4GB Replacement for QNAP RAM-4GDR3EC-LD-1600 4GB DDR3 1600 PC3-12800 CL11 2Rx8 240-pin 1.5V ECC Unbuffered UDIMM Memory RAM Module Upgrade
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OWC 4GB Replacement for QNAP RAM-4GDR3EC-LD-1600 4GB DDR3 1600 PC3-12800 CL11 2Rx8 240-pin 1.5V ECC Unbuffered UDIMM Memory RAM Module Upgrade
  • CAS Latency: CL11
  • Voltage: 1.5V
  • Recommend Use: Workstations, Servers, and NAS Systems
  • ECC: Yes
  • Model #: OWC1E6D32R804GB-B566-SF
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  • $41.98 
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OWC 16GB Replacement for QNAP RAM-16GDR4ECK1-UD-3200 16GB DDR4 3200 PC4-25600 CL22 1Rx8 288-pin 1.2V ECC Unbuffered DIMM Memory RAM Module Upgrade
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OWC 16GB Replacement for QNAP RAM-16GDR4ECK1-UD-3200 16GB DDR4 3200 PC4-25600 CL22 1Rx8 288-pin 1.2V ECC Unbuffered DIMM Memory RAM Module Upgrade
  • CAS Latency: CL22
  • Voltage: 1.2V
  • Recommend Use: Workstations, Servers, and NAS Systems
  • ECC: Yes
  • Model #: OWC3E2D41R816GB-B608-SF
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  • $236.79 
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OWC 8GB (2x4GB) DDR3 1333 PC3-10600 CL9 2Rx8 240-pin 1.5V Non-ECC UDIMM Memory RAM Module Kit
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OWC 8GB (2x4GB) DDR3 1333 PC3-10600 CL9 2Rx8 240-pin 1.5V Non-ECC UDIMM Memory RAM Module Kit
  • CAS Latency: CL9
  • Voltage: 1.5V
  • Multi-channel Kit: Dual Channel Kit
  • Recommend Use: Desktops
  • Model #: OWC1U3D32R8008P-B244-SF
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  • $62.37 
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OWC 16GB (4x4GB) DDR3L 1600 PC3L-12800 CL11 2Rx8 240-pin 1.35V Non-ECC UDIMM Memory RAM Module Kit
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OWC 16GB (4x4GB) DDR3L 1600 PC3L-12800 CL11 2Rx8 240-pin 1.35V Non-ECC UDIMM Memory RAM Module Kit
  • CAS Latency: CL11
  • Voltage: 1.35V
  • Multi-channel Kit: Dual Channel Kit
  • Recommend Use: Desktops
  • Model #: OWC1U6T32R8016S-B247-SF
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  • $116.95 
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OWC 8GB DDR3L 1600 PC3L-12800 CL11 2Rx8 240-pin 1.35V ECC Unbuffered UDIMM Memory RAM Module Upgrade for Select Desktops, Workstations, or Servers
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OWC 8GB DDR3L 1600 PC3L-12800 CL11 2Rx8 240-pin 1.35V ECC Unbuffered UDIMM Memory RAM Module Upgrade for Select Desktops, Workstations, or Servers
  • CAS Latency: CL11
  • Voltage: 1.35V
  • Recommend Use: Workstations, Servers, and NAS Systems
  • ECC: Yes
  • Model #: OWC1E6T32R808GB-B254-SF
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  • $59.98 
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OWC 4GB DDR3L 1600 PC3L-12800 CL11 2Rx8 240-pin 1.35V ECC Unbuffered UDIMM Memory RAM Module Upgrade for Select Desktops, Workstations, or Servers
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OWC 4GB DDR3L 1600 PC3L-12800 CL11 2Rx8 240-pin 1.35V ECC Unbuffered UDIMM Memory RAM Module Upgrade for Select Desktops, Workstations, or Servers
  • CAS Latency: CL11
  • Voltage: 1.35V
  • Recommend Use: Workstations, Servers, and NAS Systems
  • ECC: Yes
  • Model #: OWC1E6T32R804GB-B256-SF
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  • $41.98 
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OWC 8GB Replacement for Hynix HMCG66MEBUA081N HMCG66MEBUA084N - DDR5 4800 PC5-38400 CL40 1Rx16 288-pin 1.1V Non-ECC UDIMM Memory RAM Module Upgrade
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OWC 8GB Replacement for Hynix HMCG66MEBUA081N HMCG66MEBUA084N - DDR5 4800 PC5-38400 CL40 1Rx16 288-pin 1.1V Non-ECC UDIMM Memory RAM Module Upgrade
  • CAS Latency: CL40
  • Voltage: 1.1V
  • Recommend Use: Desktops
  • Buffered/Registered: Unbuffered
  • Model #: OWC4U8D51R608GB-B847-SF
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  • $263.99 
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OWC 8GB Replacement for Micron MTC4C10163S1UC48B - DDR5 4800 PC5-38400 CL40 1Rx16 288-pin 1.1V Non-ECC UDIMM Memory RAM Module Upgrade
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OWC 8GB Replacement for Micron MTC4C10163S1UC48B - DDR5 4800 PC5-38400 CL40 1Rx16 288-pin 1.1V Non-ECC UDIMM Memory RAM Module Upgrade
  • CAS Latency: CL40
  • Voltage: 1.1V
  • Recommend Use: Desktops
  • Buffered/Registered: Unbuffered
  • Model #: OWC4U8D51R608GB-B856-SF
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  • $263.99 
  • Free Shipping

Desktop Memory

System memory is where a computer holds the programs and data that are currently in use. The definition of the word "memory" has become somewhat blurred over the years because there are different types of memory that a computer uses. In general, "memory" refers to the system memory, or RAM, which holds instructions that the processor uses, and the data the instructions work with.

System memory is directly related to the performance of your computer. In some ways, it's even more important than the processor, because without enough memory, your processor cannot work to its full potential. Newer programs require more memory than older ones, so when buying a new computer, get the most memory that you can afford.

Learn about Types of System Memory

There are many different types of system memory available. Researching them will help you make an informed choice when you purchase your computer. Getting the right kind of memory for your system will also affect whether you can upgrade it later on, and by how much. With the right memory, you can move it from one system to another, or continue to use the same memory even after you upgrade your motherboard.

Types of memory include 168-pin SDRAM, 184-pin DDR SDRAM, 240-pin DDR2 SDRAM, and 240-pin DDR3 SDRAM. Capacity typically ranges from 128MB to 2GB with speeds covering PC 100, PC 133, PC 2100, PC 2700, PC 3200, PC 4000, PC2 3200, PC2 4200, PC2 5300, PC2 5400, PC2 6400, PC2 8000, PC2 8500, PC2 8800, PC2 8888, PC2 9136, PC2 9200, PC2 9600, PC2 10000, PC2 10400, PC3 8500, PC3 10600, PC3 10666, PC3 10700, PC3 12800, PC3 13000, PC3 14400, PC3 15000, and so on.

Bestselling Desktop Memory Reviews:

Sean P.
7/18/2026 11:05:08 AM
Nice and Colorful

“ This memory is great for my use case. ”

Team T-Force Delta RGB 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model TF3D432G3200HC16FDC01
Anonymous
7/2/2026 7:37:22 AM
Consistent reliable memory

“ Solid, no-frills RAM that just works. ”

Team T-FORCE VULCAN Z 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model TLZGD416G3200HC16CDC01
MICHAEL G.
7/1/2026 9:44:35 AM
Pricey, even for old RAM, but works.

“ Okay ram. ”

G.SKILL Ripjaws V Series 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model F4-3200C16D-16GVKB
Brian
6/19/2026 12:22:46 PM
Man, did I get lucky.

“ Got this last April, just before DDR4 prices also went through the roof. ”

G.SKILL Ripjaws V Series 64GB (4 x 16GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model F4-3200C16Q-64GVK
Joel H.
6/18/2026 10:15:33 AM
The RAM is too dang high!

“ It's DDR5 and works fine ”

CORSAIR Vengeance RGB 32GB (2 x 16GB) 288-Pin PC RAM DDR5 6000 (PC5 48000) Desktop Memory Model CMH32GX5M2B6000C38