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2. DDR5 SDRAM - Wikipedia

   en.wikipedia.org/wiki/DDR5_SDRAM

   Earlier DIMM generations featured only a single channel and one CA (Command/Address) bus controlling the whole memory module with its 64 (for non-ECC) or 72 (for ECC) data lines. Both subchannels on a DDR5 DIMM each have their own CA bus, controlling 32 bits for non-ECC memory and either 36 or 40 data lines for ECC memory, resulting in a total ...

3. DDR SDRAM - Wikipedia

   en.wikipedia.org/wiki/DDR_SDRAM

   The number of chips is a multiple of 8 for non-ECC modules and a multiple of 9 for ECC modules. Chips can occupy one side (single sided) or both sides (dual sided) of the module. The maximal number of chips per DDR module is 36 (9×4) for ECC and 32 (8x4) for non-ECC. ECC vs non-ECC Modules that have error-correcting code are labeled as ECC.

4. Memory module - Wikipedia

   en.wikipedia.org/wiki/Memory_module

   SO-DIMM, small outline DIMM, a smaller version of the DIMM, used in laptops; Compression Attached Memory Module, thinner than SO-DIMM; The large memories found in personal computers, workstations, and non-handheld game-consoles normally consist of dynamic RAM (DRAM). Other parts of the computer, such as cache memories normally use static RAM.

5. Synchronous dynamic random-access memory - Wikipedia

   en.wikipedia.org/wiki/Synchronous_dynamic_random...

   PC133 is a computer memory standard defined by the JEDEC. PC133 refers to SDR SDRAM operating at a clock frequency of 133 MHz, on a 64-bit-wide bus, at a voltage of 3.3 V. PC133 is available in 168-pin DIMM and 144-pin SO-DIMM form factors. PC133 is the fastest and final SDR SDRAM standard ever approved by the JEDEC, and delivers a bandwidth of ...

6. CAMM (memory module) - Wikipedia

   en.wikipedia.org/wiki/CAMM_(memory_module)

   Compression Attached Memory Module (CAMM) is a memory module form factor which uses a land grid array, and developed at Dell by engineer Tom Schnell as a replacement for DIMMs and SO-DIMMs which use edge connectors and had been in use for about 25 years. [1] The first SO-DIMMs were introduced by JEDEC in 1997. [2] [3] [4] [5]

7. Serial presence detect - Wikipedia

   en.wikipedia.org/wiki/Serial_presence_detect

   In computing, serial presence detect (SPD) is a standardized way to automatically access information about a memory module.Earlier 72-pin SIMMs included five pins that provided five bits of parallel presence detect (PPD) data, but the 168-pin DIMM standard changed to a serial presence detect to encode more information.