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Nvidia's GT200 Chip To Pack About 1 Billion Transistors Into 576 Mm2

By - Source: Tom's Hardware US | B 9 comments

 

The upcoming GeForce GTX 260/280 GPUs are based on the GT200 (NV60) core and will be built using a 65 nm manufacturing process at TSMC. However, we heard that not many chips will actually fit on a 300 mm wafer, since Nvidia has come up with a huge die measuring 24 x 24 mm, resulting in a die area size of 576 mm2.

This area is almost 100 mm2 larger than Nvidia’s previous 90 nm high-end GPU (G80) and a consequence of 16 processing blocks (G80 came with nine blocks, eight were enabled for GTX models, six for GTS versions) and a new 512-bit memory controller, which replaces the old 384-bit model (the GTS260 will integrate a 448-bit version).

The current G92 or GeForce 8800GT/8800GTS512/9800GTX/9800GX2 CPUs are built in a 65 nm process and end up at a die size of 330 mm2. The original G80 (NV50) GPU, better known as the GeForce 8800, was manufactured in 90 nm and delivered a die size of 484 mm2.

With its new GPU generation, Nvidia is going to continue on the safe route and plan with enough spare transistors for 240 shader units (actually, 240FP+240MADD). Just like ATI’s graphics parts and Sony Cell processor, this should not be considered odd. Keep in mind that the G92 chip debuted with 112 shader units and, after production had ramped up, Nvidia unlocked all the shader and texture units to create GeForce 8800GTS512, followed by the 9800GTX and GX2.

The same will be the case with the GeForce GTX 280 and 260. The GPU will have 15 processing units (240 shader processors) available on the GTX280, while the GTX260 will come with 12 units for a grand total of 192 shader processors. This may be an indication for the complexity involved in manufacturing such a part - especially if you think about the fact that Nvidia has a tradition of designing its GPUs completely in software and a massive supercomputer system in Santa Clara, California. The company always has been proud of the fact that every GeForce chip you buy essentially is "first silicon."

Our sources state that the manufacturing cost of the GT200 die is somewhere between $100 to $110 per piece. It is pricey and you will be getting a lot more processing logic inside this core than with any other semiconductor part in the short history of the IT industry.

Typically, the CPU die spends about 66-80% of its real estate on cache and the remainder on logic; in the world of GPUs it is vice versa. Our sources indicated that the number of transistors on the GT200 will settle somewhere in the neighborhood of 1 billion - north of 900 million and south of 1.1 billion.

The production cost of a chip is determined on the amount of chips that fit on a wafer. In light of the fact that a 300mm (12") wafer carried less than 120 G80 GPUs, Nvidia will see even fewer GT200s, apparently about 100, according to what he heard.

We can’t wait to lay our hands on one (or two) of these babies, and we’ll share our impressions as soon as possible.

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  • 1 Hide
    makotech222 , May 22, 2008 1:48 AM
    so... what does this mean exactlly? just more expensive chip? higher temps/power consumption?
  • 0 Hide
    iLLz , May 22, 2008 6:36 AM
    Im guessing both, but it should perform like crazy.
  • -1 Hide
    hannibal , May 22, 2008 12:30 PM
    Yep... expensive piese of pure power...
  • 1 Hide
    darkunicorn , May 22, 2008 2:23 PM
    I wonder can nvidia's GT200 survive ATI's 4800 series.
  • 1 Hide
    draxssab , May 22, 2008 8:25 PM
    It seems that Nvidia continu their Moto "Bigger, hotter, pricier" I see no new concept there. They will probably keep their fans that liked this before though.
    But i'm still more hurry to see ATI's new job.

    BIGBIG GPU Vs Onboard physics, GDDR5 and low price tag, this summer war promise to be more violent than last year!
  • 0 Hide
    jimmysmitty , May 23, 2008 1:15 PM
    Hmmm... NVidia is adding a 512bit memory controller, which ATI had on the R600 but dropped on the R670. I don't think it will make a difference in true performane except it will give them more memory bandwidth.

    It looks interesting and I am more than ready to watch these two duke it out again. R700 doesn't look like a pushover but this looks like it may challeneg it. Then again AMD is going for more the price/performance market. I just hope that doesn't stop them from giving the best possible performance like ATI used to do.
  • 0 Hide
    mostafaoraby , May 24, 2008 7:42 PM
    hmm well , i hope that ATI offers a good high end GPU`s too (4xxx) , cause its good for us in terms of prices :D 
  • -1 Hide
    hannibal , May 25, 2008 9:24 AM
    No highend ATI 4xxx variant is coming (ATI's own information). But you can buy 3 4800X2 cards to make allmost the same effect in cf :-)
    A lot of money burned and little more speed achieved...
  • 0 Hide
    printz_asger , June 1, 2008 5:36 PM
    lol, the name is not 4800X2, but 4870X2 and that is very much a high-end Graphics Cards. Not as high-end like the 280gtx, but it is! ^^