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Kingston 4GB DDR4 SDRAM Memory Module (kcp426ns6-4) (kcp426ns6/4)
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Kingston 4GB DDR4 SDRAM Memory Module (kcp426ns6-4) (kcp426ns6/4)
  • CAS Latency: CL19
  • LED Color: None
  • Model #: 0bc-580880000392289
  •  
  • $95.99 
200U Ddr2 533Mhz Cl4 240 Pin Dimm M378T6553Cz3-Cd5
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  • $56.16 
  • $39.99 Shipping
Kingston ValueRAM 4GB DDR4 SDRAM Memory Module KVR32S22S64
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Kingston ValueRAM 4GB DDR4 SDRAM Memory Module KVR32S22S64
  • CAS Latency: CL22
  • Voltage: 1.20V
  • Color: Black
  • LED Color: None
  • Model #: KVR32S22S64
Kingston KVR16S11K2/16  16GB 1600MHz DDR3 Non-ECC CL11 SODIMM (Kit of 2)
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  • $86.66 
  • $9.99 Shipping
Crucial 8GB (2 x 4GB) DDR4 2133 (PC4 17000) Desktop Memory Model CT2K4G4DFS8213
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Crucial 8GB (2 x 4GB) DDR4 2133 (PC4 17000) Desktop Memory Model CT2K4G4DFS8213
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Multi-channel Kit: Dual Channel Kit
  • Chipset: Major Brand Chipset
  • Model #: CT2K4G4DFS8213
  •  
  • $98.55 
  • Free Shipping
SK Hynix 8GB (2X4GB) PC4-2133 DDR4-2133 HMA451U6AFR8N-TF Desktop PC Memory 288p
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SK hynix
SK Hynix 8GB (2X4GB) PC4-2133 DDR4-2133 HMA451U6AFR8N-TF Desktop PC Memory 288p
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: HMA451U6AFR8N-TF X2
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  • $98.55 
  • Free Shipping
Hynix 2GB PC2-6400 DIMM RAM DDR2-800 Desktop Memory Module
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  • $99.91 
  • Free Shipping
G.SKILL Ripjaws Series 4GB 240-Pin PC RAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9S-4GBRL
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G.SKILL Ripjaws Series 4GB 240-Pin PC RAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9S-4GBRL
  • CAS Latency: CL9
  • Voltage: 1.50V
  • Timing: 9-9-9-24-2N
  • Buffered/Registered: Unbuffered
  • Model #: F3-12800CL9S-4GBRL
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  • $100.99 
Mushkin 991995 - 4GB DDR3 PC3-12800 9-9-9-24 Blackline
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  • $101.99 
Crucial 8GB 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model CT8G4DFRA266
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Crucial 8GB 288-Pin PC RAM DDR4 2666 (PC4 21300) Desktop Memory Model CT8G4DFRA266
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Timing: 19-19-19
  • Buffered/Registered: Unbuffered
  • Model #: CT8G4DFRA266
Crucial 8GB Single DDR4 2666 MT/s (PC4-21300) SR x8 DIMM 288-Pin Memory - CT8G4DFS8266
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Crucial 8GB Single DDR4 2666 MT/s (PC4-21300) SR x8 DIMM 288-Pin Memory - CT8G4DFS8266
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Multi-channel Kit: Dual Channel Kit
  • Timing: 19-19-19
  • Model #: CT8G4DFS8266-CRUCIAL
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  • $104.35 
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Crucial 8GB (1 x 8GB) DDR4 2400MHz DRAM (Desktop Memory) CL17 1.2V SR DIMM (288-pin) CT8G4DFS824A
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Crucial 8GB (1 x 8GB) DDR4 2400MHz DRAM (Desktop Memory) CL17 1.2V SR DIMM (288-pin) CT8G4DFS824A
  • CAS Latency: CL17
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • BIOS/Performance Profile: Intel XMP 2.0
  • Model #: CT8G4DFS824A
Crucial 8GB DDR4 2133 (PC4 17000) Desktop Memory Model CT8G4DFD8213
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Crucial 8GB DDR4 2133 (PC4 17000) Desktop Memory Model CT8G4DFD8213
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Color: Green
  • Model #: CT8G4DFD8213
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  • $104.35 
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Crucial 8GB DDR4 2400 (PC4 19200) Desktop Memory Model CT8G4DFD824A
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Crucial 8GB DDR4 2400 (PC4 19200) Desktop Memory Model CT8G4DFD824A
  • CAS Latency: CL17
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Features: Speeds start at 2133 MT/s and faster data rates are expected to be available as DDR4 technology matures Increase bandwidth by up to 32% Reduce power consumption by up to 40% Faster burst access speeds for improved sequential data throughput Optimized for next generation processors and platforms Available in four channel kits up to 64GB
  • Model #: CT8G4DFD824A
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  • $104.35 
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Crucial 8GB DDR4 2133 (PC4 17000) Desktop Memory Model CT8G4DFS8213
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Crucial 8GB DDR4 2133 (PC4 17000) Desktop Memory Model CT8G4DFS8213
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Chipset: Micron Chipset
  • Recommend Use: Intel Compatible
  • Model #: CT8G4DFS8213
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  • $104.35 
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8GB Micron MTA8ATF1G64AZ-2G6E1 DDR4-21300 UDIMM Desktop Memory 1RX8 PC4-2666V-UA2-11
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8GB Micron MTA8ATF1G64AZ-2G6E1 DDR4-21300 UDIMM Desktop Memory 1RX8 PC4-2666V-UA2-11
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: MG-UD-8GB-CP4-2666
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  • $104.35 
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Micron 8G MTA8ATF1G64AZ-2G6E1 DDR4-21300 Desktop Memory UDIMM 1RX8 PC4-2666V-UA2-11 1.2V
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Micron 8G MTA8ATF1G64AZ-2G6E1 DDR4-21300 Desktop Memory UDIMM 1RX8 PC4-2666V-UA2-11 1.2V
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: MTA8ATF1G64AZ -2G6E1
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  • $104.35 
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Hynix HMA81GU6AFR8N-UH 8GB DDR4 2400MHz Desktop PC RAM - PC4-19200 PC4-2400T - Memory 288pin DIMM
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SK hynix
Hynix HMA81GU6AFR8N-UH 8GB DDR4 2400MHz Desktop PC RAM - PC4-19200 PC4-2400T - Memory 288pin DIMM
  • CAS Latency: CL17
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: HMA81GU6AFR8N- UH
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  • $104.35 
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Kingston ValueRAM 8GB DDR4 2133 (PC4 17000) Desktop Memory Model KVR21N15S8/8
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Kingston ValueRAM 8GB DDR4 2133 (PC4 17000) Desktop Memory Model KVR21N15S8/8
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Timing: 15-15-15
  • Buffered/Registered: Unbuffered
  • Model #: KVR21N15S8/8
  •  
  • $104.35 
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Crucial CT8G4DFS8266.M8FE 8GB 1x8GB PC4-21300 DDR4-2666MHz UDIMM 288-PIN Desktop Memory Ram
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Crucial CT8G4DFS8266.M8FE 8GB 1x8GB PC4-21300 DDR4-2666MHz UDIMM 288-PIN Desktop Memory Ram
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: CT8G4DFS8266.M8FE
  •  
  • $104.35 
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Crucial CT8G4DFS8266.M8FE 8GB 1x8GB PC4-21300 DDR4-2666MHz UDIMM 288-PIN Desktop Memory Ram
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Crucial CT8G4DFS8266.M8FE 8GB 1x8GB PC4-21300 DDR4-2666MHz UDIMM 288-PIN Desktop Memory Ram
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: YLD-UD-8GB-PC-21300
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  • $104.35 
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Crucial 8GB 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Desktop Memory Model CT8G4DFS8266
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Crucial 8GB 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Desktop Memory Model CT8G4DFS8266
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Features: Speeds start at 2133 MT/s and faster data rates are expected to be available as DDR4 technology matures Increase bandwidth by up to 32% Reduce power consumption by up to 40% Faster burst access speeds for improved sequential data throughput Optimized for next generation processors and platforms Available in four channel kits up to 64GB
  • Model #: MP1
  •  
  • $104.35 
  • Free Shipping
Crucial 8GB x1 DDR4 2133mhz CT8G4DFD8213.C16FBD1 UDIMM 1.2V CL15 Desktop Memory RAM
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Crucial 8GB x1 DDR4 2133mhz CT8G4DFD8213.C16FBD1 UDIMM 1.2V CL15 Desktop Memory RAM
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: CT8G4DFD8213.C16FBD1
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  • $104.35 
  • Free Shipping
Crucial 8GB 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Desktop Memory Model CT8G4DFS8266
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Crucial 8GB 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Desktop Memory Model CT8G4DFS8266
  • CAS Latency: CL19
  • Color: Green
  • LED Color: None
  • Model #: CT8GRDFS8266-YRD
  •  
  • $104.35 
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CT8G4DFS8266  Crucial 8GB DDR4-2666(PC4-21300) UDIMM • 2666MT/s •1.2V •CL-19 •Single Ranked •x8 based •Unbuffered •NON-ECC •288-PIN Desktop Memory
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  • $104.35 
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Crucial 8GB DDR4 UDIMM 2666MHz CL19 PC-21300  Single Rank Desktop Memory RAM  CT8G4DFS8266.C8FE
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Crucial 8GB DDR4 UDIMM 2666MHz CL19 PC-21300 Single Rank Desktop Memory RAM CT8G4DFS8266.C8FE
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Buffered/Registered: Unbuffered
  • Model #: YLD-UD-8GB-PC4-21300
  •  
  • $104.35 
  • Free Shipping
SAMSUNG M378A1G43Db0-Cpb  Memory For Desktop Memory-M378A1G43Db0-Cpb
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  • $104.35 
  • Free Shipping
G.SKILL Value Series 8GB DDR3 1333 (PC3 10600) Desktop Memory Model F3-10600CL9S-8GBNT
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G.SKILL Value Series 8GB DDR3 1333 (PC3 10600) Desktop Memory Model F3-10600CL9S-8GBNT
  • CAS Latency: CL9
  • Voltage: 1.50V
  • Timing: 9-9-9-24
  • Buffered/Registered: Unbuffered
  • Model #: F3-10600CL9S-8GBNT

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:

MikeInBC
3/16/2026 1:43:55 AM
Expensive

“ On one hand, the memory kit works exactly how it should. ”

Team T-Force Delta RGB 32GB (2 x 16GB) 288-Pin PC RAM DDR5 6000 (PC5 48000) Desktop Memory Model FF3D532G6000HC30DC01
Yyrkoon29
3/13/2026 6:22:05 PM
Amazing deal on the ram and cpu bundle.

“ These are some great ram at a great price with the bundle. ”

CORSAIR Vengeance LPX 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model CMK32GX4M2E3200C16
Fancymusic
3/11/2026 7:43:23 AM
Very solid ram

“ It's very good ram and it looks great with my aio cpu cooler. ”

Team T-Force Delta RGB 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model TF3D432G3200HC16FDC01
Keir W.
3/5/2026 9:05:10 AM
Great product

“ Itvwad a good upgrade from 16GB. ”

CORSAIR Vengeance LPX 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model CMK32GX4M2E3200C16
Anonymous
3/5/2026 7:33:05 AM
Great ram

“ I went from 64gb of ddr4 to 32gb of ddr5 ”

CORSAIR Vengeance RGB 32GB (2 x 16GB) 288-Pin PC RAM DDR5 6400 (PC5 51200) Desktop Memory Model CMH32GX5M2N6400C36W
Anonymous
2/28/2026 4:35:32 PM
Easy to install and both sticks worked.

“ Hopefully they last longer than the last sticks i got. ”

G.SKILL TridentZ RGB Series 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Intel XMP 2.0 Desktop Memory Model F4-3200C16D-32GTZR
Claude T.
2/23/2026 8:36:39 AM
Good ram at a good price

“ I would recommend for any Intel DDR4 build ”

G.SKILL Ripjaws V Series 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3600 (PC4 28800) Desktop Memory Model F4-3600C18D-16GVK