The graph below is one of transistor count, not die size. Inevitably, on the same manufacturing process, a significantly higher transistor count translates into a larger die size. But for the purposes of this article, all I need to show you is a representation of transistor count.

See that big circle on the right? That's Fermi. NVIDIA's next-generation architecture.

NVIDIA astonished us with GT200 tipping the scales at 1.4 billion transistors. Fermi is more than twice that at 3 billion. And literally, that's what Fermi is - more than twice a GT200.

At the high level the specs are simple. Fermi has a 384-bit GDDR5 memory interface and 512 cores. That's more than twice the processing power of GT200 but, just like RV870 (Cypress), it's not twice the memory bandwidth.

The architecture goes much further than that, but NVIDIA believes that AMD has shown its cards (literally) and is very confident that Fermi will be faster. The questions are at what price and when.

The price is a valid concern. Fermi is a 40nm GPU just like RV870 but it has a 40% higher transistor count. Both are built at TSMC, so you can expect that Fermi will cost NVIDIA more to make than ATI's Radeon HD 5870.

Then timing is just as valid, because while Fermi currently exists on paper, it's not a product yet. Fermi is late. Clock speeds, configurations and price points have yet to be finalized. NVIDIA just recently got working chips back and it's going to be at least two months before I see the first samples. Widespread availability won't be until at least Q1 2010.

I asked two people at NVIDIA why Fermi is late; NVIDIA's VP of Product Marketing, Ujesh Desai and NVIDIA's VP of GPU Engineering, Jonah Alben. Ujesh responded: because designing GPUs this big is "fucking hard".

Jonah elaborated, as I will attempt to do here today.

A Different Sort of Launch
POST A COMMENT

416 Comments

View All Comments

  • Calin - Thursday, October 01, 2009 - link

    Also, there could be a chance that the Fermi chip doesn't need/use much more bandwidth than the GT200. Available bandwidth does not performance make Reply
  • SiliconDoc - Friday, October 02, 2009 - link

    Yeah, of course, 3 million T core, and it doesn't need much bandiwth, and it won't be used, perhaps, or probably, because the GPU designers haven't a clue, and of course, you do.
    ---
    Another amazing clown with a red nose. You people really should stop typing stupid stuff like that.
    Reply
  • Calin - Sunday, October 04, 2009 - link

    There was no performance improvement from increasing the bandwidth of the Athlon64 processors due to the move to DDR2 memory (a theoretical doubling of performance, with about one and a half more measured bandwidth in the first generation of the processor).

    I might not have a clue, but do you?
    Reply
  • SiliconDoc - Wednesday, September 30, 2009 - link

    Very interesting of course, and so with your theory, it could also be LOWER, with slower ddr5, but the fact REMAINS, 240 has ALREADY BEEN LEAKED.
    so we know what it is, and Anand KNOWS IT'S MORE, BUT NOT DOUBLE AND SAYS SO !
    ---
    SO WHAT WE HAVE IS A CONVENIENT COVER UP. PERIOD!
    --
    JUST NOT AS STUPID AS YOU, THAT'S ALL.
    Reply
  • dragunover - Thursday, October 01, 2009 - link

    "SO WHAT WE HAVE IS A CONVENIENT COVER UP. PERIOD!
    --
    JUST NOT AS STUPID AS YOU, THAT'S ALL. "
    I disregarded anything you said before and after that.
    Reply
  • SiliconDoc - Friday, October 02, 2009 - link

    I'm certain you attempted it, as you no doubt love to wallow in blissful ignorance and denial just by mere unchangeable habit.
    But having read it, you have nowhere to go. Your mind is already irreparably altered. Congratulations.
    Reply
  • jonGhast - Wednesday, September 30, 2009 - link

    True, you seem to be a whole new level of stupid. Reply
  • mapesdhs - Wednesday, September 30, 2009 - link


    I have a theory on that one: faulty keyboard. Every time he hits Shift
    to get upper case, his keyboard is zapping out brain cells with EMF bursts. :D

    Best to just ignore & not reply IMO.

    Ian.

    Reply
  • SiliconDoc - Thursday, October 01, 2009 - link

    Well you can't ignore the discussion, and as far as that goes, you want everyone else to do your will, as you beg for it, with your empty advice, which is by the way, all you provided in the last thread.
    So you quack around telling others not to participate. That's your whole gig mary.

    I find the stupidity level amazing, as most of you can only spew in and beg eachother not to comment, and by the quality of the comments that actually try a counter, I certainly cannot blame you, for begging others to surrender ahead of time.

    You notice how many new names are here ? lol
    It's clear who and what it is that responds, and what level of conduct they are all about.

    Now let's see the Sybillic mapes sign off on his/her own glorious advice, which she/he failed to follow already.
    Reply
  • Silverel - Thursday, October 01, 2009 - link

    Hey buddy. Take a pill and relax.

    Your product isn't on the market yet. There's no recommendation to be heeded. It doesn't matter how fast it is, you can't have one. No one can. If someone wants to get their next-gen performance on now, ATI is what you'll buy.

    It's okay though. Not everyone is going to run out and grab an ATI card. There's plenty of people that will wait for hell to freeze over for nVidia to release a new card. Personally, I'll take the Q1 2010 release date as semi-fact, but hell freezing over is my fallback date.

    So feel free to continue ranting like you've run out of meds. Insult anyone who has made a comment contrary to your own. It's not really doing you any favors, but that's okay. I'm sure it's having an effect on the opinions of people sitting on the fence. Ah, and just to dig the finger in the wound, you can consider me an ATI shill, just for good measure.

    Reply

Log in

Don't have an account? Sign up now