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Related Flashcards
Cards In This Set
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DRAM (Dynamic RAM)
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Memory that must be refreshed.
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SRAM (Static RAM) (L1, L2, L3)
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Does not require refresh. Used for cache memory.
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SDRAM (Synchronous Dynamic RAM)
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Synced with the CPU clock. 168 pin.
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DDR (Double Data Rate) SDRAM
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Data read on rising and falling edge of computer clock to double the bandwith of SDRAM. 184-pin, 64-bit DIMM.
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DDR2
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Similiar to DDR but 240-pin, 64-bit DIMM. Faster than DDR. Uses 1.8v power. Maximum 1066 MHz.
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DDR3
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Similiar to DDR2 but even faster. uses less power than DDR2 (1.5v). Common for Intel i5 and i7, and AMD Socket AM3 verisons of the Phenom II. Higher MHz. Dual and tri-channel support double or triple throughput.
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Single-Channel DDR
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Uses one DDR module in a single slot.
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Dual-Channel DDR
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Uses two DDR modules in two slots to double bandwidth to the system bus.
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Tri-Channel DDR
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Uses three DDR modules in three slots to triple bandwidth to the system bus.
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DIMM (Dual Inline Memory Module)
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168, 184, or 240-pin. Pins on both sides are independent. SDRAM uses DIMM. 64-bits.
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SoDIMM (Small outline DIMM)
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Used in notebook computers. 72-pin is 32-bits and 144-pin is 64-bits.
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MicroDIMM
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Smaller than a SoDIMM, used in sub-notebook computers. 144-pin SDRAM, 172-pin DDR, 214-pin DDR2.
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RIMM (Rambus Inline Memory Module)
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184 or 168-pin, 16 or 32-bit, 800-1600 MHz, 2 notches. Each RIMM slot must be filled. C-RIMM can fill empty slots. Uses heat spreader. Current DDR and DDR2 is faster and less expensive.
AKA RDRAM. |
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RDRAM (Rambus RAM)
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Can handle speeds up to 800 MHz. Shares almost all the characteristics of SDRAM. A stick of RDRAM is called a RIMM.
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Data Throughput
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To determine the bytes per second, take the MHz speed and mulitply by 8 bytes.
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