GDDR5 SDRAM
Type of Nvidia GeForce GTX 980 Ti | |
Developer | JEDEC |
---|---|
Type | Synchronous dynamic random-access memory |
Generation | 5th generation |
Predecessor | GDDR4 SDRAM |
Successor | GDDR6 SDRAM |
Graphics Double Data Rate 5 Synchronous Dynamic Random-Access Memory (GDDR5 SDRAM) is a type of
Overview
Like its predecessor,
GDDR5
GDDR5 operates with two different clock types. A differential command clock (CK) as a reference for address and command inputs, and a forwarded differential write clock (WCK) as a reference for data reads and writes, that runs at twice the CK frequency. Being more precise, the GDDR5 SGRAM uses a total of three clocks: two write clocks associated with two bytes (WCK01 and WCK23) and a single command clock (CK). Taking a GDDR5 with 5
A single 32-bit GDDR5 chip has about 67 signal pins and the rest are power and grounds in the 170 BGA package.
Commercialization of GDDR5
GDDR5 was revealed by Samsung Electronics in July 2007. They announced that they would mass-produce GDDR5 starting in January 2008.[2]
In November 2007,
On November 20, 2009,
Hynix 40 nm class "2 Gb" (2 × 10243 bit) GDDR5 was released in 2010. It operates at 7 GHz effective clock-speed and processes up to 28 GB/s.
In June 2010,
"4 Gb" (4 × 10243 bit) GDDR5 components became available in the third quarter of 2013. Initially released by Hynix,
In February 2014, as a result of its acquisition of Elpida,
As of January 15, 2015,
On January 6, 2015, Micron Technology President Mark Adams announced the successful sampling of 8 Gb GDDR5 on the company's fiscal Q1-2015 earnings call.[21][22] The company then announced, on January 25, 2015, that it had begun commercial shipments of GDDR5 using a 20 nm process technology.[23][24][25] The formal announcement of Micron's 8 Gb GDDR5 appeared in the form of a blog post Archived 2015-09-07 at the Wayback Machine by Kristopher Kido on the company's website September 1, 2015.[26][27]
GDDR5X
In January 2016, JEDEC standardized GDDR5X SGRAM.[28] GDDR5X targets a transfer rate of 10 to 14 Gbit/s per pin, twice that of GDDR5.[29] Essentially, it provides the memory controller the option to use either a double data rate mode that has a prefetch of 8n, or a quad data rate mode that has a prefetch of 16n.[30] GDDR5 only has a double data rate mode that has an 8n prefetch.[31] GDDR5X also uses 190 pins per chip (190 BGA).[30] By comparison, standard GDDR5 has 170 pins per chip; (170 BGA).[31] It therefore requires a modified PCB. QDR (quad data rate) may be used in reference to the write command clock (WCK) and ODR (Octal Data Rate) in reference to the command clock (CK).[32]
GDDR5X commercialization
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/GDDR5X_1080ti.jpg/220px-GDDR5X_1080ti.jpg)
Micron Technology began sampling GDDR5X chips in March 2016,[33] and began mass production in May 2016.[34]
Nvidia officially announced the first graphics card using GDDR5X, the Pascal-based GeForce GTX 1080 on May 6, 2016.[35] Later, the second graphics card to use GDDR5X, the Nvidia Titan X on July 21, 2016,[36] the GeForce GTX 1080 Ti on February 28, 2017,[37] and Nvidia Titan Xp on April 6, 2017.[38]
See also
References
- ^ Micron TN-ED-01: GDDR5 SGRAM Introduction. Archived 2015-09-18 at the Wayback Machine Accessed April 11, 2014
- ^ Pancescu, Alexandru (July 18, 2007). "Samsung Pushes The GDDR5 Standard Forward". Softpedia. Retrieved 18 September 2019.
- ^ "History: 2000s". SK Hynix. Archived from the original on 6 August 2020. Retrieved 8 July 2019.
- ^ Register report Archived 2008-07-06 at the Wayback Machine. Retrieved November 2, 2007.
- ^ Qimonda GDDR5 Archived 2016-08-26 at the Wayback Machine White Paper
- ^ GDDR5 in Production, New Round of Graphics Cards War Imminent., retrieved May 11, 2008
- ^ Topalov, Milan. "Elpida officially opens Munich Design Center". www.fabtech.org. Archived from the original on 2016-01-17. Retrieved 2015-09-09.
- ^ "Elpida Opens High Speed DRAM Test Laboratory at Munich Design Center | Business Wire". www.businesswire.com. Retrieved 2015-09-09.
- ^ "Micron (MU) Completes Elpida Memory, Rexchip Purchases". Retrieved 2015-09-09.
- ^ "Markus Balb | LinkedIn".
- ^ Hynix 1H '11 Product Catalog, page 8. Archived 2014-03-13 at the Wayback Machine Accessed July 24, 2014.
- ^ Hynix H5GQ2H24AFR Product Overview. Archived 2014-07-23 at the Wayback Machine Accessed July 24, 2014.
- ^ Qimonda Press Release. May 21, 2008 Archived September 16, 2008, at the Wayback Machine
- ^ AMD Press Release. June 25, 2008
- ^ Pop, Sebastian. "Elpida Starts Making GDDR5 Graphics Memory, Delivers 2Gb Chip". Retrieved 2015-09-09.
- ^ "Interview with PS4 system architect". 2013-04-01.
- ^ "PlayStation 4 Teardown". Retrieved 2015-09-09.
- ^ teardown.com. "Sony PlayStation 4 Teardown : Board & Chip Shots and Images (Digital Home Teardown)". www.techinsights.com. Archived from the original on 2015-10-02. Retrieved 2015-09-09.
- ^ "Micron Technology, Inc.—GDDR5 | DRAM". www.micron.com. Archived from the original on 2016-03-20. Retrieved 2016-09-06.
- ^ "Samsung Electronics Starts Mass Producing Industry's First 8-Gigabit Graphics DRAM (GDDR5)". 2015-01-15.
- ^ "Micron Technology's (MU) CEO Mark Durcan on Q1 2015 Results—Earnings Call Transcript". Seeking Alpha. Retrieved 2015-09-09.
- ^ "Micron: We are sampling 8Gb GDDR5 for 8GB graphics cards". Retrieved 2015-09-09.
- ^ "Micron Technology's (MU) CEO Mark Durcan on Q3 2015 Results—Earnings Call Transcript". Seeking Alpha. Retrieved 2015-09-09.
- ^ "Micron begins commercial shipments of 20nm GDDR5 chips". Retrieved 2015-09-09.
- ^ "Micron delivers GDDR5 memory on 20 nm". www.hitechreview.com. Retrieved 2015-09-09.
- ^ "Micron Starts Shipping 8Gb GDDR5 Memory For Next Generation Graphics Cards | HotHardware". Retrieved 2015-09-09.
- ^ "Micron Technology, Inc.—Next-Gen Graphics Products Get Extreme Speed From Latest Graphics Memory Solutions". www.micron.com. Archived from the original on 2015-09-07. Retrieved 2015-09-09.
- ^ "JEDEC Announces Publication of GDDR5X Graphics Memory Standard". JEDEC. 2016-01-26. Retrieved 2016-02-10.
- ^ "JEDEC Publishes GDDR5X Specifications – Double the Bandwidth of GDDR5 With Lowered Power Consumption". Retrieved 6 June 2016.
- ^ a b "GDDR5X SGRAM: MT58K256M32 – 16 Meg x 32 I/O x 16 banks, 32 Meg x 16 I/O x 16 banks" (PDF). Micron Technology. May 2016. Archived from the original (PDF) on February 7, 2017. Retrieved May 29, 2016.
- ^ a b "GDDR5 SGRAM: MT51J256M32 – 16 Meg x 32 I/O x 16 banks, 32 Meg x 16 I/O x 16 banks" (PDF). Micron Technology. November 2015. Archived from the original (PDF) on February 7, 2017. Retrieved May 29, 2016.
- ^ Smith, Ryan. "Micron Spills on GDDR6X: PAM4 Signaling For Higher Rates, Coming to NVIDIA's RTX 3090". www.anandtech.com.
- ^ Shilov, Anton (March 29, 2016). "Micron Begins to Sample GDDR5X Memory, Unveils Specs of Chips". AnandTech. Retrieved 16 July 2019.
- ^ Shilov, Anton (May 12, 2016). "Micron Confirms Mass Production of GDDR5X Memory". AnandTech. Retrieved 16 July 2019.
- ^ Newsroom, NVIDIA. "A Quantum Leap in Gaming: NVIDIA Introduces GeForce GTX 1080". NVIDIA Newsroom Newsroom.
- ^ "The New NVIDIA TITAN X: The Ultimate. Period. - The Official NVIDIA Blog". nvidia.com. 21 July 2016.
- ^ Newsroom, NVIDIA. "NVIDIA Introduces the Beastly GeForce GTX 1080 Ti -- Fastest Gaming GPU Ever". NVIDIA Newsroom Newsroom.
- ^ "The New Titan Is Here: NVIDIA TITAN Xp - NVIDIA Blog". nvidia.com. 6 April 2017.