Editing DDR2 SDRAM (section)

== History ==
DDR2 SDRAM was first produced by [[Samsung]] in 2001. In 2003, the [[JEDEC]] standards organization presented Samsung with its Technical Recognition Award for the company's efforts in developing and standardizing DDR2.<ref name="phys">{{cite news |title=Samsung Demonstrates World's First DDR 3 Memory Prototype |url=https://phys.org/news/2005-02-samsung-world-ddr-memory-prototype.html |access-date=23 June 2019 |work=[[Phys.org]] |date=17 February 2005 |language=en-us}}</ref>

DDR2 was officially introduced in the second quarter of 2003 at two initial clock rates: 200&nbsp;MHz (referred to as PC2-3200) and 266&nbsp;MHz (PC2-4200). Both performed worse than the original DDR specification due to higher latency, which made total access times longer. However, the original DDR technology tops out at a clock rate around 200&nbsp;MHz (400 MT/s). Higher performance DDR chips exist, but JEDEC has stated that they will not be standardized. These chips are mostly standard DDR chips that have been tested and rated to be capable of operation at higher clock rates by the manufacturer. Such chips draw significantly more power than slower-clocked chips, but usually offered little or no improvement in real-world performance, unless bandwidth dependent tasks such as integrated graphics rendering are used. DDR2 started to become competitive against the older DDR standard by the end of 2004, as modules with lower latencies became available.<ref>{{cite web |url=http://www.xbitlabs.com/articles/memory/display/ddr2-ddr.html |title=DDR2 vs. DDR: Revenge gained |author=Ilya Gavrichenkov |publisher=X-bit Laboratories |url-status=dead |archive-url=https://web.archive.org/web/20061121045622/http://www.xbitlabs.com/articles/memory/display/ddr2-ddr.html |archive-date=2006-11-21 }}</ref>