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Samsung claims to have broken speed records with its new graphics memory

Samsung Electronics announced over the weekend that it has increased the data transfer speed on its extremely fast GDDR4 (Graphics Double Data Rate, version 4) graphics memory. The South Korean electronics giant claims that it has increased speeds by two-thirds.

Using 80-nanometer production technology, the 4Gb/s (2.0GHz) is 66 percent faster than today’s fastest commercially available memory – the 2.4Gb/s GDDR4. The new 4Gb/s graphics memory, offered in 512Mb density, has a 32-bit data bus configuration. GDDR4 uses JEDEC-approved standards for signal noise reduction to help attain the highest possible speed.

“Our new GDDR4 memory will add even more zip in video applications, making gaming, computer-aided design and video editing faster than ever before,” said Mueez Deen, marketing director, graphics memory, Samsung Semiconductor, Inc. “This will enable ultra-smooth movements in animation and make games incredibly realistic, resulting in a truly immersive user experience,” he added.

Samsung cites analyst expectations for GDDR4 to significantly boost demand for high-performance graphics memory over the next 12-18 months. The company said that it will begin customer sampling of its new chips this month.

Most video cards on the market today from NVIDIA and ATI are still using GDDR3, including solutions inside the Xbox 360 and PlayStation 3. GDDR4 memory thus far has seen limited use in recent high-end cards from ATI, and is expected to be paired with the upcoming R600 GPU.

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By lamestlamer on 2/26/2007 4:49:02 PM , Rating: 2
I don't get it. At 4 gb/s per module, the standard 8 modules for 512mbytes only yields 32 gb/s over a 256bit bus, which is quite slow in modern graphics throughput. Are you sure that isn't 4GB/s instead? That would be 256 gb/s which is very very fast.

RE: speed?
By WayneG on 2/26/2007 5:03:51 PM , Rating: 2
the latter is correct, yes :). The same speed as the eDRAM connected to the 360 but on a much larger scale and used for more than simple AA tasks and the likes.

RE: speed?
By FITCamaro on 2/26/2007 6:40:41 PM , Rating: 2
R600 also has a 512bit bus, not 256bit.

RE: speed?
By shimman on 2/26/2007 11:03:41 PM , Rating: 2
those byte & bit conventions are all messed up. samsung always use 'b' as byte when it comes to memory, so it is 4gbyte/sec/chip & i think the chip can be overclocked considerably. question is how much samsung is charging for it as samsung is the only one making it that fast.

i really hope everyone is clear about whether b stands for bit (as usual convention) or byte (usually B) by spelling out unless it is bps which should be bits per sec

RE: speed?
By ET on 2/27/2007 11:10:14 AM , Rating: 2
Actually, 4Gb/s at 2GHz seems right. It means that each line can transfer 2 bits per clock, or a total of 4G bits per second. A 256 bit interface would then transfer data at 1Tb/s, or 128GB/s.

This is completely in line with current memory bandwidth. For example, the Radeon X1950 XTX has a 1GHz memory speed and 64GB/s bandwidth. An R600 with 1GB of such RAM will therefore have 256GB/s of bandwidth.

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