usbharddrive

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What is the difference between 2-clock and 4-clock memory? Two types of SDRAM modules are the 2-clock and the 4-clock module. Structurally, they are the same, but they are accessed differently. A 2-clock SDRAM module is set up so that each clock cycle accesses two chips on the module. A 4-clock SDRAM setup accesses 4 chips per clock cycle. To choose what kind to get, you must look into the motherboard''s documentation. 4-clock modules are the more commonly used. The typical indication of the wrong type being used is a system giving error beeps and not booting as it cannot use the memory installed. The system will not proceed past POST (Power On Self Test). 2-clock was only used in 66 MHz systems. All PC 100 and PC 133 memory is 4-clock only. Do all of your SDRAM modules use SPD? SPD, or Serial Presence Detect, is a program in an EEPROM chip on the modules of SDRAM (Synchronous Dynamic Random Access Memory). It tells the system’s BIOS what the specifications and settings of the memory module are. All of our SDRAM DIMMs have SPD programming. usbharddrive The system BIOS should therefore be set on AutoDetection for memory.

EDO DRAM. Extended Data Out DRAM EDO speeds are measured in nanoseconds. You can buy EDO as fast as 50ns for your personal computer main memory (you usbharddrive may see faster EDO DRAM on some graphics cards. EDO memory is commonly available as 72-pin SIMMs). FPM DRAM. Fast Page Mode DRAM Fast-page mode is becoming increasingly scarce, but, unless you''re running a very early system (430NX chipset or earlier) or a 486 system, you probably don''t want to get DRAM. Fast-page mode memory comes in SIMMs. RDRAM is shipped in RIMMs (RAMBUS inline memory modules). Future systems using the Intel 820 chipset and the upcoming 600MHz plus Pentium IIIs will use RAMBUS memory, but they aren''t out as of this writing. Way back in the dark ages of the PC architecture, I once owned an original Compaq portable. While the Compaq supported a whopping 640KB of RAM, it only came with 256KB. I upgraded my Compaq myself with an additional 384KB of memory by carefully inserting 27 individual 16KB RAM chips. The hunger for memory has steadily increased since then; 64MB is no longer unusual. Upgrading memory is easier, too; you no longer must painfully insert individual RAM chips.

Professional / Feel the need for Speed! If you are running multiple business applications, want to play the newer video games and/or work with graphics, you can get by with 256MB, but your computer speed would benefit greatly by having 512MB. Advanced Professional If you work with high-end graphics, software, digital images, or video, you can get by with 256MB, but would benefit greatly by installing 512MB of memory or more. Right now our 512MB memory modules are available at incredibly low prices. Graphics Design Professional If you are, or plan to be, a professional graphics designer, use CAD or modeling software, digital images or video, you can get by with 512MB, but would benefit from going to 1GB of memory or more. Will adding more RAM make my Internet surfing faster? The short answer is maybe. Internet browsing speed depends on a huge number of factors, including your connection speed, traffic on usbharddrive the site you''re visiting, and the other components in your system. usbharddrive You will probably notice the biggest improvement from additional RAM if are viewing or working with large files (such as photos and digital audio and video) or if you switch between your browser and other applications often, like to play games, or want to use your computer for viewing photos.

usbharddrive

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