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2. DDR SDRAM - Wikipedia

   en.wikipedia.org/wiki/DDR_SDRAM

   One should definitely be careful buying 1 GB memory modules, because all these variations can be sold under one price position without stating whether they are ×4 or ×8, single- or dual-ranked. There is a common belief that number of module ranks equals number of sides.

3. DDR4 SDRAM - Wikipedia

   en.wikipedia.org/wiki/DDR4_SDRAM

   DDR4 is not compatible with any earlier type of random-access memory (RAM) due to different signaling voltage and physical interface, besides other factors. DDR4 SDRAM was released to the public market in Q2 2014, focusing on ECC memory , [ 6 ] while the non-ECC DDR4 modules became available in Q3 2014, accompanying the launch of Haswell-E ...

4. List of HP business desktops - Wikipedia

   en.wikipedia.org/wiki/List_of_HP_business_desktops

   4 GB MT 2007 HP dx2080 [6] Intel 945GZ Intel Core 2, Pentium D, Pentium 4 LGA 775 Intel GMA 950 No GPU slot DDR2, 2 4 GB MT 2006 HP dx2100 [7] Intel 915GV Intel Pentium 4 Intel GMA 900 No GPU slot DDR2, 4 4 GB MT 2005 HP dx2150 [8] ATI Radeon Xpress 200 AMD Athlon 64 X2, Athlon 64, Sempron: Socket 939 ATI Radeon Xpress 200 DDR, 4 4 GB MT 2005 ...

5. DDR3 SDRAM - Wikipedia

   en.wikipedia.org/wiki/DDR3_SDRAM

   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 (9 ns) 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 9–12 cycles = 7.5–10 ns), and ...

6. Random-access memory - Wikipedia

   en.wikipedia.org/wiki/Random-access_memory

   A 64 bit memory chip die, the SP95 Phase 2 buffer memory produced at IBM mid-1960s, versus memory core iron rings 8GB DDR3 RAM stick with a white heatsink Random-access memory ( RAM ; / r æ m / ) is a form of electronic computer memory that can be read and changed in any order, typically used to store working data and machine code .

7. Synchronous dynamic random-access memory - Wikipedia

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

   DDR3 memory chips are being made commercially, [11] and computer systems using them were available from the second half of 2007, [12] with significant usage from 2008 onwards. [13] Initial clock rates were 400 and 533 MHz, which are described as DDR3-800 and DDR3-1066 (PC3-6400 and PC3-8500 modules), but 667 and 800 MHz, described as DDR3-1333 ...