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Rimlance 4GB (1X4GB) 1.2V DDR4 2133MHz PC4-17000 UDIMM 1RX8
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Rimlance 4GB (1X4GB) 1.2V DDR4 2133MHz PC4-17000 UDIMM 1RX8
  • CAS Latency: CL15
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Model #: RUD17000S8C4
  •  
  • $39.19 –
  • Free Shipping
Rimlance 8GB (2X4GB) 1.2V DDR4 2666MHZ PC4-21300 UDIMM 1RX8
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Rimlance 8GB (2X4GB) 1.2V DDR4 2666MHZ PC4-21300 UDIMM 1RX8
  • CAS Latency: CL19
  • Multi-channel Kit: Dual Channel Kit
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Model #: RUD21300S8C2K8
  •  
  • $68.59 –
  • Free Shipping
Rimlance 8GB (1X8GB) 1.2V DDR4 2933MHZ PC4-23400 UDIMM 1RX8
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Rimlance 8GB (1X8GB) 1.2V DDR4 2933MHZ PC4-23400 UDIMM 1RX8
  • CAS Latency: CL21
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Model #: RUD23400S8C8
  •  
  • $79.79 –
  • Free Shipping
Rimlance 4GB (1X4GB) 1.2V DDR4 2666MHZ PC4-21300 UDIMM 1RX8
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Rimlance 4GB (1X4GB) 1.2V DDR4 2666MHZ PC4-21300 UDIMM 1RX8
  • CAS Latency: CL19
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Model #: RUD21300S8C4
  •  
  • $41.99 –
  • Free Shipping
CMP64GX5M2X6600C32 Corsair Dominator Titanium 2x32 64GB DDR5-6600MHz Memory
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Corsair
CMP64GX5M2X6600C32 Corsair Dominator Titanium 2x32 64GB DDR5-6600MHz Memory
  • Brand: CORSAIR
  • Part Number: CMP64GX5M2X6600C32
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: CMP64GX5M2X6600C32-New
Rimlance 4GB (1X4GB) 1.5V DDR3 1600MHZ PC3-12800 UDIMM 1RX8
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Rimlance 4GB (1X4GB) 1.5V DDR3 1600MHZ PC3-12800 UDIMM 1RX8
  • CAS Latency: CL11
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Model #: RUD12800S8C4
  •  
  • $19.59 –
  • Free Shipping
AddOn - Memory Upgrades 1GB DDR2-800MHz/PC2-6400 240-pin DIMM F/DESKTOPS
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AddOn - Memory Upgrades 1GB DDR2-800MHz/PC2-6400 240-pin DIMM F/DESKTOPS
  • CAS Latency: CL5
  • Voltage: 1.80V
  • Buffered/Registered: Unbuffered
  • Features: This Industry Standard 1GB DDR2-800MHz Dual Rank Unbuffered 1.8V 240-pin CL5 UDIMM is 100% guaranteed to be compatible with your system and to work right the first time. Adding additional memory is the best way to increase the performance of your system. All our memory is built to strict JEDEC standards to meet or exceed the Tier 1 OEM's factory requirements. Our products are also guaranteed by federal law to not affect or void OEM warranties.
  • Model #: AA800D2N5/1G
  •  
  • $182.20 –
  • $10.00 Shipping
Mushkin Enhanced 4GB Essentials DDR3 1333MHz PC3 10666-240-Pin Desktop Memory Model 991769
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Mushkin Enhanced 4GB Essentials DDR3 1333MHz PC3 10666-240-Pin Desktop Memory Model 991769
  • CAS Latency: CL9
  • Voltage: 1.50V
  • Timing: 9-9-9-24
  • Color: N/A
  • Model #: 991769.
  •  
  • $76.99 –
RIMLANCE Ram 16GB DDR4-2666 (PC4-21300) 288-Pin desktop memory
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RIMLANCE Ram 16GB DDR4-2666 (PC4-21300) 288-Pin desktop memory
  • CAS Latency: CL19
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: Lifetime warranty
  • Model #: RLMUD-21300-16-28-0702
  •  
  • $125.99 –
  • Free Shipping
RIMLANCE Ram 8GB DDR3-1866 (PC3L-14900)  240-Pin desktop memory
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RIMLANCE Ram 8GB DDR3-1866 (PC3L-14900) 240-Pin desktop memory
  • CAS Latency: CL13
  • Chipset: Major Brand Chipset
  • Recommend Use: High Performance or Gaming Memory
  • Buffered/Registered: Unbuffered
  • Model #: RLMUD-14900-8-28-0700
  •  
  • $33.43 –
  • Free Shipping
SAMSUNG 1GB DDR3 1333 (PC3 10600) Desktop Memory Model M378B2873FHS-CH9
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SAMSUNG
Refurbished SAMSUNG 1GB DDR3 1333 (PC3 10600) Desktop Memory Model M378B2873FHS-CH9
  • CAS Latency: CL9
  • Voltage: 1.50V
  • Buffered/Registered: Unbuffered
  • Model #: M378B2873FHS-CH9
  •  
  • $18.00 –
  • $39.99 Shipping
Lexar Memory LD4AU008G-B3200GSST 8GB 3200 MHz DDR4 U-DIMM - Desktop Memory
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  •  
  • $149.90 –
  • Free Shipping
8GB RAM-8GDR4A1-UD-2400 DDR4-2400 PC4-19200 288-Pin UDIMM RAM Replacement Memory for QNAP
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8GB RAM-8GDR4A1-UD-2400 DDR4-2400 PC4-19200 288-Pin UDIMM RAM Replacement Memory for QNAP
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: QN8GB2400DTA1r1b8-TZSpecificMPN/NE
  •  
  • $107.24 –
  • $9.99 Shipping
8GB RAM-8GDR4-LD-2133 DDR4-2133 PC4-17000 288-Pin UDIMM RAM Replacement Memory for QNAP
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8GB RAM-8GDR4-LD-2133 DDR4-2133 PC4-17000 288-Pin UDIMM RAM Replacement Memory for QNAP
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: QN8GB2133DTr2b8-TZSpecificMPN/NE
  •  
  • $107.24 –
  • $9.99 Shipping
8GB 4X70G88313 DDR4 2133 Udimm PC4-17000 RAM Replacement Memory for Lenovo
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8GB 4X70G88313 DDR4 2133 Udimm PC4-17000 RAM Replacement Memory for Lenovo
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: LE8GB2133DTr2b8-MGSpecific1aMPN/NE
  •  
  • $107.24 –
  • $9.99 Shipping
8GB 4X70G88327 DDR4 2400 Udimm PC4-19200 RAM Replacement Memory for Lenovo
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8GB 4X70G88327 DDR4 2400 Udimm PC4-19200 RAM Replacement Memory for Lenovo
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: LE8GB2400DTr1b8-MGSpecific1aMPN/NE
  •  
  • $107.24 –
  • $9.99 Shipping
8GB 4X70G88331 DDR4 2133 Udimm PC4-17000 RAM Replacement Memory for Lenovo
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8GB 4X70G88331 DDR4 2133 Udimm PC4-17000 RAM Replacement Memory for Lenovo
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: LE8GB2133DTr2b8-MGSpecificaMPN/NE
  •  
  • $107.24 –
  • $9.99 Shipping
8GB 4X70R38787 DDR4 2666 Udimm PC4-21300 RAM Replacement Memory for Lenovo
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8GB 4X70R38787 DDR4 2666 Udimm PC4-21300 RAM Replacement Memory for Lenovo
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: LE8GB2666DTr1b8-MGSpecific1aMPN/NE
  •  
  • $117.32 –
  • $9.99 Shipping
16GB RAM-16GDR4-LD-2133 DDR4-2133 PC4-17000 288-Pin UDIMM RAM Replacement Memory for Lenovo
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16GB RAM-16GDR4-LD-2133 DDR4-2133 PC4-17000 288-Pin UDIMM RAM Replacement Memory for Lenovo
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: QN16GB2133DTr2b8-TZSpecificMPN/NE
  •  
  • $165.70 –
  • $9.99 Shipping
8GB 4X70K09921 DDR4 2400 Udimm PC4-19200 RAM Replacement Memory for Lenovo
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8GB 4X70K09921 DDR4 2400 Udimm PC4-19200 RAM Replacement Memory for Lenovo
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: LE8GB2400DTr1b8-MGSpecificaMPN/NE
  •  
  • $107.24 –
  • $9.99 Shipping
8GB 4ZC7A08701 DDR4 2666 Udimm PC4-21300 RAM Replacement Memory for Lenovo
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8GB 4ZC7A08701 DDR4 2666 Udimm PC4-21300 RAM Replacement Memory for Lenovo
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: LE8GB2666DTr1b8-MGSpecificaMPN/NE
  •  
  • $117.32 –
  • $9.99 Shipping
16GB 4X70G88314 DDR4 2133 Udimm PC4-17000 RAM Replacement Memory for Lenovo
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16GB 4X70G88314 DDR4 2133 Udimm PC4-17000 RAM Replacement Memory for Lenovo
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: LE16GB2133DTr2b8-MGSpecific1aMPN/NE
  •  
  • $165.70 –
  • $9.99 Shipping
8GB P1N52AA P1N52AT 288-Pin DDR4 UDIMM RAM Replacement Memory for HP
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8GB P1N52AA P1N52AT 288-Pin DDR4 UDIMM RAM Replacement Memory for HP
  • Voltage: 1.20V
  • Chipset: Major Brand Chipset
  • Buffered/Registered: Unbuffered
  • Parts: 5 Years
  • Model #: HP8GB2133DTr1b8-MGSpecific1MPN/NE
  •  
  • $107.24 –
  • $9.99 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:

Anonymous
10/17/2026 8:15:42 AM
No issues, all went smoothly

“ Nice performance increase with double the RAM. ”

G.SKILL Ripjaws V Series 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model F4-3200C16D-16GVKB
Anonymous
10/7/2026 3:56:50 PM
Amazing Ram.

“ as the ram that allowed me to step up to AM5 from 4, my expectations were already high. ”

CORSAIR Vengeance 32GB (2 x 16GB) 288-Pin PC RAM DDR5 6000 (PC5 48000) Desktop Memory Model CMK32GX5M2B6000C30
Makenzie H.
10/5/2026 3:53:53 PM
An upgrade

“ I had a set of HP ram in here, but they stopped selling it, so I had to make an upgrade anyways. ”

CORSAIR Vengeance RGB Pro SL 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model CMH16GX4M2E3200C16
Anonymous
10/3/2026 11:50:28 AM
No compatibility issues

“ This is a second the same memory set I purchased to make my memory at 128gb. ”

CORSAIR Vengeance RGB 32GB (2 x 16GB) 288-Pin PC RAM DDR5 6000 (PC5 48000) Desktop Memory Model CMH32GX5M2E6000C36
Anonymous
9/16/2026 4:10:12 PM
64 GB G.SKILL RAM

“ No complains they didn't give me faulty ram or anything and it was legit I would 100% recommend buying from them! ”

G.SKILL Trident Z5 Neo RGB Series 64GB (2 x 32GB) 288-Pin PC RAM DDR5 6000 (PC5 48000) Desktop Memory Model F5-6000J3040G32GX2-TZ5NR
Myriaderoc
9/12/2026 1:56:58 PM
Took extra effort to get XMP working

“ Overall, this RAM is fine. ”

CORSAIR Vengeance RGB 64GB (2 x 32GB) 288-Pin PC RAM DDR5 6000 (PC5 48000) Desktop Memory Model CMH64GX5M2N6000Z40
Elizabeth
8/27/2026 10:13:42 AM
Exactly as expected

“ Bought this as an upgrade for my old prebuilt PC that I gifted to my girlfriend after a deep clean and reset. ”

G.SKILL Ripjaws V Series 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model F4-3200C16D-16GVKB