Memory - RAM

RAM (Random Access Memory) is where data the CPU is working with is temporarily stored. More RAM is generally better, although there are diminishing returns and 32-bit versions of Windows only support a maximum of 4GB. Speed, measured in MHz, is another consideration, but most importantly memory needs to be compatible with your motherboard: it'll either be DDR, DDR2, DDR3 or DDR4. Smaller SODIMM modules for laptops and mini PCs and ECC memory for servers are all available in this category.

DDR4 Quad Channel 3200MHz+ RAM Memory Kits

DDR4 SDRAM is the fastest and most efficient consumer memory available. At present, it's only compatible with Intel's X99 motherboards, which run in quad-channel. That's what these modules are designed for, so they're sold in matching kits of four or eight. These are the most premium, fastest kits around, with speeds starting at 2,666MHz and reaching 3,333MHz.

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DDR4 Single/Dual Channel 3000MHz+ RAM Memory Kits

DDR4 SDRAM is the fastest and most efficient consumer memory available. It's only compatible with Intel's Haswell E which run in quad-channel and Skylake CPUs which run in dual-channel. The latter is what these modules are designed for, so they're sold in matching kits of two modules for best performance or single modules for a cheap upgrade. These are the high-end kits, with a speed of at least 3,000Hz.

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Server DDR3 1600MHz RAM Memory Kits

Available as regular DIMMs or SO-DIMMs for micro-servers, these DDR3 modules are designed for servers and are engineered and clocked to provide rock solid stability 24/7. ECC (error correcting code) modules are immune to errors, while registered/buffered sticks reduce memory controller load and ensure additional stability when using many modules together. Motherboards need to support ECC and registered memory for these features to work.

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Server DDR4 2133MHz RAM Memory Kits

DDR4 server memory brings maximum speed and efficiency to Intel's latest quad-channel Xeon platform. Server memory is designed to have rock solid stability 24/7. ECC (error correcting code) modules are immune to errors, while registered/buffered sticks reduce memory controller load and ensure additional stability when using many modules together. Motherboards need to support ECC and registered memory for these features to work.

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