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MemoryMasters SNP66GKYC/8G - 8GB PC3-12800 DDR3-1600MHz 2Rx8 1.5v Non-ECC ...
$39 .95
ZVVN 4GB DDR3L 1333 (PC3L 10600) 1.35V CL9 DIMM PC RAM Desktop Computer Memory ...
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cron 1Gb Dimm Pc2-4200 533Mhz 2Rx8 Non-Ecc 240 Pin
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Kingston KHX6400D2/1G 1GB PC2-6400 (DDR2-800) non-ECC non-Registered DIMM. 2.3V ...
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MemoryMasters 8GB ( 4 x 2GB ) DDR2 DIMM (240 PIN) AM2 800Mhz PC2 6400 / PC2 6300 , LP UT ...
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MemoryMasters 8GB Kit (2GBX4) DDR2 800 Udimm RAM, PC2-6400/PC2-6400U 1.8V CL6 ...
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MemoryMasters 4GB ( 2 x 2GB ) DDR2 DIMM (240 PIN) AM2 800Mhz PC2 6400 / PC2 6300 ...
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4GB (2x2GB) DDR3-1066MHZ PC3-8500 NON-ECC UDIMM 2Rx8 Desktop Memory Module
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SAMSUNG M471B1G73QH0-YK000 Samsung DDR3L-1600 SODIMM 8GB1Gx64 CL11 ...
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Kingston KVR800D2N6-2G 2GB DDR2 RAM PC2-6400 240-Pin DIMM
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MemoryMasters 4GB 2X 2GB DDR2 800MHz PC2-6300 PC2-6400 DDR2 800 (240 PIN) DIMM ...
$15 .59
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4GB (2x2GB) DDR3-1066MHZ PC3-8500 NON-ECC UDIMM 2Rx8 Desktop Memory Module
$23 .76
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Kingston ValueRAM 2GB 800MHz DDR2 Non-ECC CL5 DIMM Desktop Memory
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Samsung DDR4-2133 8GB/512Mx8 CL15 Desktop Memory
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SAMSUNG M395T5160Cz4-Ce66 Memory Module-M395T5160Cz4-Ce66
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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.