GDDR 3 / 4 / 5 a další grafické paměti

[no-X]

Prozatím testy vlivu GDDR 3 / 5 na výkon (RV770):

• Bericht: Was bringt GDDR5 auf der Radeon HD 4870? [ComputerBase.de]
• Radeon HD 4800 : GDDR5 utile? [Hardware.fr]

Pokud byste si vzpoměnli na nějaký starší test GDDR3 vs. GDDR4, tak ho rád doplním.

[Stratos]

koukam ty rozdily sou nekde dost veliky sem zvedav jak se podepise na dalsim zvysovani vykonu 5Ghz QDDR5.

[Krteq]

Vzpomněl jsem si na jeden test GDDR3 vs. GDDR4 na X1950 Pro

• Jetway Radeon X1950 Pro GDDR4 vs X1950 Pro GDDR3 Review [MadShrimps.be]

[Krteq]

Výrobci GDDR5 zvyšují jejich produkci a "rychlost"

Manufacturers have started ramping up the production of GDDR5 this quarter. Qimonda was the first out of the gate with AMD's Radeon HD 4870. Now Samsung & Hynix have also begun production of GDDR5. Aside from improving availability and driving GDDR5 costs down, the speeds have also started to ramp up nicely...

...Hynix is in the process of producing GDDR5 modules at 5GHz while Samsung has gone further by promising 6GHz modules this quarter. The samples are already available to AMD, Nvidia & Intel (surprise!) and we will be seeing a barrage of new GPUs sporting GDDR5 for the next couple of years.

Více na GPU Café

[Krteq]

Samsung začíná s produkcí High-performance GDDR5 pamětí s využitím 50nm výrobní technologie

Designed to support a maximum data transfer speed of 7.0Gbps, Samsung's GDDR5 will render more life-like (3D) imaging with a maximum 28GB/s bandwidth, which is more than twice that of the previous fastest graphics memory bandwidth of 12.8GB/s for GDDR4...

...Unlike GDDR4, which processes data and images using the strobe-and-clock technique, the processing speed of the GDDR5 is much faster because it operates with a free-running clock that does not require the data read/write function to be synchronized to the operations of the clock. By adopting 50nm class technology, Samsung expects production efficiency to rise 100 percent over 60nm class technology. In addition, Samsung's GDDR5 operates at 1.35 volts...

Sumarizace:
Přenosová rychlost - 7Gb/s
Maximální propustnost - 28GB/s
Provozní napětí - 1,35V
Efektivita výroby - až 100% oproti 60nm výrobnímu procesu

Více na TechPowerUp / Samsung

[Krteq]

Elpida vstupuje na trh s grafickými paměťmi

Dodávky 1Gb/s GDDR3 a 1Gb/s GDDR5 čipů v první polovině 2010, následovat budou 2Gb/s GDDR5. V plánu jsou i GDDR5 čipy s přenosovou rychlostí 8Gb/s a více.

Shipments of 1-Gigabit GDDR3 and 1-Gigabit GDDR5 products are expected to begin in the first half of CY 2010. The production of both products is considered to be outsourced to Winbond Electronics Corporation, a Taiwanese company that has experience with Qimonda's process technology...

..."Graphics systems now need graphics buffer memory with a data transfer rate of more than 5-Gigabit/sec given the rapidly growing popularity of high-definition format graphics data, 3D graphics and various display formats," said Takao Adachi, Elpida's Chief Technology Officer. "In response to this need we will shortly begin commercial production of GDDR5, for which an even faster data transfer rate of 8-Gigabit/sec may be feasible in the near future. To achieve such high speeds advanced technologies for I/O signal transmission as well as internal high speed circuits are crucial.....

Více na TechPowerUp

[Krteq]

Winbond Electronics Corp. začne vyrábět GDDR pod vlastní značkou

...Potentially Winbond is now capable of making own-brand GDDR3 and GDDR5 memory chips with various capacity, however, the company did not outline any concrete GDDR roadmap on Wednesday.

At present only Hynix Semiconductor and Samsung Electronics produce GDDR memory, which is used on graphics cards, inside video game consoles and for some other high-performance devices. Later this year Elpida will also start to sell GDDR3 and GDDR5 memory. Successful execution of entering GDDR market will mean expansion of Winbond’s core business while reducing dependence on commodity DRAM in Winbond wafer fab.

Viz.: X-bit labs

[Krteq]

Elpida připravuje 6Gbps GDDR5 čipy



Více na Guru3D

[no-X]

Od začátku podzimu se mluvilo o "GDDR5+". By mě zajímalo, jestli je tím míněno toto (tzn. 6Gbps+), nebo jestli z toho bude něco jiného...

[Krteq]

No možná to bude i toto

Elpida vyvinula 7GHz 2Gb GDDR5 čipy, expedovat by je měla začít v červenci tohoto roku.

Elpida’s new 2Gb GDDR5 chip can work at up to 7Ghz (quad data rate) clock-speed and will power graphics cards and/or other memory bandwidth-sensitive applications. For example, the new memory chips can power graphics cards with 2GB or 4GB of memory onboard. The chip is made using 50nm copper process technology and was developed by Elpida’s design center in Munich, Germany, which originally was operated by Qimonda...

...Elpida plans to begin sample shipments of the new 2Gb GDDR5 in July 2010. Mass production is expected to get underway in the Q3 of 2010.

Viz.: X-Bit Labs