Ram memory 8GB kit (2 x 4GB) DDR3 PC3-12800,1600MHz, 204 PIN SODIMM for laptops

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According to JEDEC, [11] :111 1.575 volts should be considered the absolute maximum when memory stability is the foremost consideration, such as in servers or other mission-critical devices. In addition, JEDEC states that memory modules must withstand up to 1.80 volts [a] before incurring permanent damage, although they are not required to function correctly at that level. [11] :109 Power consumption of individual SDRAM chips (or, by extension, DIMMs) varies based on many factors, including speed, type of usage, voltage, etc. Dell's Power Advisor calculates that 4GB ECC DDR1333 RDIMMs use about 4W each. [20] By contrast, a more modern mainstream desktop-oriented part 8GB, DDR3/1600 DIMM, is rated at 2.58W, despite being significantly faster. [21] Modules [ edit ] List of standard DDR3 SDRAM modules Release 4 of the DDR3 Serial Presence Detect (SPD) document (SPD4_01_02_11) adds support for Load Reduction DIMMs and also for 16b-SO-DIMMs and 32b-SO-DIMMs. JEDEC Solid State Technology Association announced the publication of Release 4 of the DDR3 Serial Presence Detect (SPD) document on September 1, 2011. [27] XMP extension [ edit ] DDR3-xxx denotes data transfer rate, and describes DDR chips, whereas PC3-xxxx denotes theoretical bandwidth (with the last two digits truncated), and is used to describe assembled DIMMs. Bandwidth is calculated by taking transfers per second and multiplying by eight. This is because DDR3 memory modules transfer data on a bus that is 64 data bits wide, and since a byte comprises 8 bits, this equates to 8 bytes of data per transfer.

As with earlier memory generations, faster DDR3 memory became available after the release of the initial versions. DDR3-2000 memory with 9-9-9-28 latency (9ns) was available in time to coincide with the Intel Core i7 release in late 2008, [19] while later developments made DDR3-2400 widely available (with CL 9–12cycles = 7.5–10ns), and speeds up to DDR3-3200 available (with CL 13cycles = 8.125ns). Pc3 10600 vs. pc3 10666 What's the difference – New-System-Build, Tomshardware.com , retrieved 2012-01-23 In February 2005, Samsung introduced the first prototype DDR3 memory chip. Samsung played a major role in the development and standardisation of DDR3. [2] [3] In May 2005, Desi Rhoden, chairman of the JEDEC committee, stated that DDR3 had been under development for "about 3 years". [4] The DDR3 standard permits DRAM chip capacities of up to 8 gigabits (Gbit), and up to four ranks of 64 bits each for a total maximum of 16 gigabytes (GB) per DDR3 DIMM. Because of a hardware limitation not fixed until Ivy Bridge-E in 2013, most older Intel CPUs only support up to 4-Gbit chips for 8GB DIMMs (Intel's Core 2 DDR3 chipsets only support up to 2 Gbit). All AMD CPUs correctly support the full specification for 16GB DDR3 DIMMs. [1] History [ edit ] Shilov, Anton (2008-10-29). "Kingston Rolls Out Industry's First 2GHz Memory Modules for Intel Core i7 Platforms". Xbit Laboratories. Archived from the original on 2008-11-01 . Retrieved 2008-11-02.DDR3 memory utilizes serial presence detect. [26] Serial presence detect (SPD) is a standardized way to automatically access information about a computer memory module, using a serial interface. It is typically used during the power-on self-test for automatic configuration of memory modules. a b Sobolev, Vyacheslav (2005-05-31). "JEDEC: Memory standards on the way". DigiTimes.com. Archived from the original on April 13, 2013 . Retrieved 2011-04-28. JEDEC is already well along in the development of the DDR3 standard, and we have been working on it for about three years now.... Following historical models, you could reasonably expect the same three-year transition to a new technology that you have seen for the last several generations of standard memory Our energy supplier is working towards using 100% renewable electricity and is a Principal Partner of COP26 JEDEC Solid State Technology Association announced the publication of JEDEC DDR3L on July 26, 2010 [35] and the DDR3U in October 2011. [36] Feature summary [ edit ] Components [ edit ] Soderstrom, Thomas (2007-06-05). "Pipe Dreams: Six P35-DDR3 Motherboards Compared". Tom's Hardware.

Kingston's 2,544 MHz DDR3 On Show at Computex, News.softpedia.com, 2010-05-31 , retrieved 2012-01-23Addendum No. 1 to JESD79-3 - 1.35 V DDR3L-800, DDR3L-1066, DDR3L-1333, DDR3L-1600, and DDR3L-1866". May 2013 . Retrieved 2019-09-08.

Fully buffered modules, which are designated by F or FB and do not have the same notch position as other classes. Fully buffered modules cannot be used with motherboards that are made for registered modules, and the different notch position physically prevents their insertion. How Intel Plans to Transition Between DDR3 and DDR4 for the Mainstream". techpowerup.com . Retrieved 19 March 2018.The DDR3L ( DDR3 Low Voltage) standard is an addendum to the JESD79-3 DDR3 Memory Device Standard specifying low voltage devices. [31] The DDR3L standard is 1.35V and has the label PC3L for its modules. Examples include DDR3L‐800 (PC3L-6400), DDR3L‐1066 (PC3L-8500), DDR3L‐1333 (PC3L-10600), and DDR3L‐1600 (PC3L-12800). Memory specified to DDR3L and DDR3U specifications is compatible with the original DDR3 standard, and can run at either the lower voltage or at 1.50 V. [32] However, devices that require DDR3L explicitly, which operate at 1.35V, such as systems using mobile versions of fourth-generation Intel Core processors, are not compatible with 1.50V DDR3 memory. [33] DDR3L is different from and incompatible with the LPDDR3 mobile memory standard. DDR3: Frequently Asked Questions" (PDF). Archived from the original (PDF) on 2009-12-29 . Retrieved 2009-08-18. SPD (Serial Presence Detect), from JEDEC standard No. 21-C (JESD21C: JEDEC configurations for solid state memories)

Both FBDIMM (fully buffered) and LRDIMM (load reduced) memory types are designed primarily to control the amount of electric current flowing to and from the memory chips at any given time. They are not compatible with registered/buffered memory, and motherboards that require them usually will not accept any other kind of memory.a b "What is LR-DIMM, LRDIMM Memory? (Load-Reduce DIMM)". simmtester.com. Archived from the original on 2014-09-03 . Retrieved 2014-08-29.