Corsair Apple Certified 16 GB (2x8 GB) DDR3 1600MHz (PC3 12800) Laptop Memory 1.35V. Corsair's 4GB, 8GB, and 16GB Mac memory upgrade kits will help your system work better. Supports memory bus speeds of up to 1333MHz. 2pcs Crucial 8GB PC3-12800 DDR3 1600MHz 204pin Sodimm For MacBook Pro Memory RAM. Crucial 8GB Memory RAM Laptop Notebook PC3 12800 DDR3 1600 MHz. Bus Speed: PC3-12800 (DDR3-1600), Total Capacity: 8 GB.
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Adding more memory to your PC is one of the best and easiest ways to improve system performance. DDR2 PC2-4200 (commonly referred to as DDR2-533) memory is DDR2 designed for use in systems with a 266MHz front-side bus (providing a 533MT/s data transfer rate). The '4200' refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 4200MB/s, or 4.2GB/s.DDR2 PC2-5300 (commonly referred to as DDR2-667) memory is DDR2 designed for use in systems with a 333MHz front-side bus (providing a 667MT/s data transfer rate). The '5300' refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 5300MB/s, or 5.3GB/s.
PC2-5300 is backward-compatible for PC2-4200.DDR2 PC2-6400 (commonly referred to as DDR2-800) memory is DDR2 designed for use in systems with a 400MHz front-side bus (providing an 800MT/s data transfer rate). The '6400' refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 6400MB/s, or 6.4GB/s. PC2-6400 is backward-compatible for PC2-4200 and PC2-5300.DDR2 PC2-8000 (commonly referred to as DDR2-1000) memory is DDR2 providing a 1,000MT/s data transfer rate).
The '8000' refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 8000MB/s, or 8GB/s. PC2-8000 is backward-compatible for PC2-4200, PC2-5300, and PC2-6400. PC1600 memory — which Crucial no longer carries — is DDR designed for use in systems with a 100MHz front-side bus, (providing 200 mega transfers per second MT/s data transfer rate). The '1600' refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 1600MB/s, or 1.6GB/s. PC1600 has been replaced by PC2700, which is backward-compatible.PC2100 memory — which Crucial no longer carries — is DDR designed for use in systems with a 133MHz front-side bus (providing a 266 MT/s data transfer rate). The '2100' refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 2100MB/s, or 2.1GB/s. PC2100 is used primarily in AMD® Athlon® systems, Pentium® III systems, and Pentium IV systems.
PC2100 has been replaced by PC2700, which is backward-compatible.PC2700 memory — the slowest DDR memory speed that Crucial now carries — is DDR designed for use in systems with a 166MHz front-side bus (providing a 333 MT/s data transfer rate). The '2700' refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 2700MB/s, or 2.7GB/s. PC2700 is backward-compatible for PC1600 and PC2100.PC3200 (commonly referred to as DDR400) memory is DDR designed for use in systems with a 200MHz front-side bus (providing a 400 MT/s data transfer rate). The '3200' refers to the module's bandwidth (the maximum amount of data it can transfer each second), which is 3200MB/s, or 3.2GB/s. PC3200 is backward-compatible for PC1600, PC2100, and PC2700. In SDRAM modules, the numbers that come after the 'PC' refer to the speed of the system's front-side bus.PC100 memory — which Crucial no longer carries — is SDRAM designed for use in systems with a 100MHz front-side bus. It is used in many Pentium II, Pentium III, AMD K6-III, AMD Athlon, AMD Duron, and Power Mac G4 systems.
PC100 has been replaced by PC133, which is backward-compatible.125MHz memory is SDRAM designed for use in systems with a 125MHz front-side bus. 125MHz has been replaced by PC133, which is backward-compatible.PC133 memory is SDRAM designed for use in systems with a 133MHz front-side bus. It is used in many Pentium III B, AMD Athlon, and Power Mac G4 systems. PC133 is backward-compatible for PC100 and 125MHz. About adding faster memory.It may seem confusing, but faster memory will not necessarily make your system faster. You can't speed up your computer by adding faster memory if any of the other components in your computer (your processor or other memory modules) operate at a slower speed.Keep in mind, that the right memory for your computer is the kind of memory it was designed to take. Check your system manual or look up your system in the or to find the memory guaranteed to be 100 percent compatible or your money back!
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