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32GB (4x8GB) DDR3-1866MHz PC3-14900 NON-ECC UDIMM 2Rx8 Desktop Memory Module
$174 .99
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MemoryMasters NEW! 16GB 2x8GB PC3-10600 1333MHZ DDR3 240pin DESKTOP MEMORY
$69 .74
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512MB DDR2 PC2-5300 667MHz 240pin CL4 HP 377725888 377725-888
$23 .04
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Kingston KTD-DM8400A/2G PC2-6400 (DDR2-800) 2 GB 240 Pin DDR2 SDRAM 1.8V Non-ECC ...
$24 .26
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ZVVN 4GB DDR3 1066 (PC3 8500) 240 Pin DIMM PC RAM Desktop Computer Memory Blue ...
$20 .99
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MemoryMasters 1GB 184-pin PC2100 CL2.5 16c 64x8 DDR266 2Rx8 2.5V SDRAM DIMM (p/n ...
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MemoryMasters 2GB 2x 1GB DDR2 PC2 6400 800Mhz 240 Pin DIMM 2 GB KIT
$38 .00
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Kingston KTH-XW4300/512 240 Pin PC2-5300 (DDR2-667) 512 MB DIMM Non-ECC ...
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Samsung Memory M378A2K43BB1-CPB 16GB DDR4 2133MHz Unbuffered Bare
$119 .00
MemoryMasters 4GB ( 4 x 1GB ) DDR DIMM (184 pin) 400Mhz PC 3200 Low Density Heat ...
$175 .00
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ZVVN 4GB DDR3L 1333 (PC3L 10600) 240 Pin 1.35V DIMM PC RAM Desktop Computer Memory ...
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MemoryMasters 8GB Kit (2GBX4) DDR2 800 Udimm RAM, PC2-6400/PC2-6400U 1.8V CL6 ...
$39 .99
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MemoryMasters 8GB (4X 2GB) DDR2 PC2-8900 1110MHZ DIMM 8 GB - comes with Heat ...
$132 .00
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ZVVN 8GB DDR3 1600 (PC3 12800) 2RX8 CL11 Desktop DIMM RAM 1.5V Computer Memory ...
$37 .99
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MICRON MT18LSDT3272AG-10EB1 256MB DIMM PC100 RAM
$39 .99
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MemoryMasters 2GB 2x 1GB DDR2 PC2 5300 667Mhz 240 Pin DIMM 2 GB KIT
$24 .99
Samsung 8GB (PC3L-12800) DDR3L 1.35V 1600 204-Pin M471b1g73bh0-yk0
$61 .00
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NEW! 4GB PC2-6400 2 x 2GB DDR2 PC6400 800MHz Low Density Desktop Memory 4GB Kit
$24 .99
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MemoryMasters 4GB for SuperMicro A+ Server Series 1012A-M73RF 1012A-MRF 1012G-MTF ...
$14 .64
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HP 512MB DDR SDRAM Memory Module
$13 .76

Common Questions about Desktop Memory

Introduction

For a sluggish or underperforming desktop computer, a PC memory upgrade is often an effective way to increase performance. However, choosing the right desktop memory upgrade is not always easy. If you are looking for desktop memory, the memory finder tool is an excellent resource. In the next section, NeweggBusiness answers several of the most common questions about upgrading PC memory.

Questions

Why does PC memory have MHz ratings and what do they mean?

The MHz rating for PC memory is an indication of how quickly it can transfer data. The higher the MHz rating, the quicker the memory can transfer data. However, the transfer speed is bottlenecked by the motherboard and processor. If a stick of memory is rated at 1600 MHz but the processor and motherboard are limited to 1333 MHz, the memory will operate at the slower speed.

What does latency or timing mean for PC memory?

PC memory timings are performance measurements based around four parameters. These four ratings are written as four numbers separated by dashes, such as 7-8-7-24. It is better to have lower timings, as that means less latency. You should prioritize having lower latencies over faster MHz ratings.

What does memory voltage mean?

In order for PC memory modules to achieve their rated timings, they must operate at indicated voltages. If the memory modules are ran either under or over-voltage, there will be a risk of system instability and damage to the memory. However, increasing memory voltage can also lower timings for slightly faster performance.

Are there any advantages to multi-channel memory kits?

Multi-module PC memory upgrades are often marketed as dual-channel, triple-channel, or quad-channel. Known as matched memory, they are designed to work in conjunction for slightly increased performance. However, the motherboard must support multi-channel memory for there to be any benefit.

For example, if you have a motherboard that supports dual-channel memory, utilizing a matched 8 GB (2 x 4 GB) memory upgrade kit will net slightly better performance gains than two unmatched 4 GB memory sticks.

Can I use different memory brands, capacities, and speeds in the same computer?

Yes, you can use PC memory modules from different brands, with different capacities, and different speeds in the same computer. However, there will be no multi-channel performance gains because they will not be matched sets of memory. In addition, if the PC memory modules have different speeds, they will all run at the speed of the slowest module.

Are there limitations on how much memory I can install?

Yes, there are several limiting factors on how much memory you can install into one system. Most desktop motherboards only accommodate up to four unbuffered memory modules. On top of that, the largest capacity for a single unbuffered memory module is 8 GB. So the maximum amount of memory based on hardware limitations is 64 GB for unbuffered memory.

Another limitation on the benefits of additional PC memory is the operating system. An operating system can only utilize a limited amount of memory, and any extra memory past that amount will not be recognized. For example, Windows® 8 64-bit supports a maximum of 128 GB of PC memory while Windows 8 32-bit supports up to 4 GB. Past those maximums, any extra PC memory will not be recognized.