GTX 480 rumored benchmarks and TSMC problems

It seems that the reduced amount of stream processors (cuda cores) are due to TSMC yield issues at 40nm. Digitimes reports that “Nvidia’s initial batch of GeForce GTX 480/470-based graphics cards will have fewer cores than the originally expected 512 due to low 40nm yield at Taiwan Semiconductor Manufacturing Company (TSMC), according to sources from graphics card makers.”

Nvidia’s initial batch of GeForce GTX 480/470-based graphics cards will have fewer cores than the originally expected 512 due to low 40nm yield at Taiwan Semiconductor Manufacturing Company (TSMC), according to sources from graphics card makers.

Since TSMC’s 40nm yield currently is still lower than 50%, Nvidia will block some of the graphics cores with problems on the card. As a result, the GeForce GTX 480 will only have 480 cores and GTX 470 only 448, the sources noted.

The sources pointed out that Nvidia will start selling its GeForce GTX 400 series on March 26, but volume shipments will not start until April 6. The sources also noted that GeForce GTX 480 will be priced at US$499 and GeForce GTX 470 at US$349.

Perhaps, this will actually lead to a refresh later this year with 512 stream processes once 40nm yields improve. In addition, there are some benchmarks for the GTX 480 posted over at hexus.net. However, the validity of the benchmark is still in question at this point.

Sources: digitimes.co, hexus.net