Originally posted by: keysplayr2003
Originally posted by: Steelski
Originally posted by: 5150Joker
25% faster than a 512 GTX is fine for me - I just want to try out an ATi card again and get a chance to play with angle independent AF. Course if G71 slaughters it my R580 will quickly go on sale..Speaking of which, how are people so sure a 700 mhz G71 will be available in quantity? Most thought the same of the 512 GTX and when I made a thread casting doubt about it's availability, price and performance, I was bashed for it. I'm willing to bet a 700 mhz G71 will be in short supply or not even exist at all.
nobody is sure!
Except Nvidia and insiders.
700 does seem a bit far fetched when you consider that its their first 09.nm manufacturing process and its with 32 pipes. ATI were going on about their high speed cores and rumours were around of 750mhz to 850mhz chips. in the end it was a 16piped core qith 625mhz.
The GTX512 was one giant marketing campaign that really backfired on Nvidia.
I am also thinking that the part we are all expecting 700mhz and 1800ddr is a little too much. I personally think that the difference between the g71 and g70 is more likeley to be like the difference between a 7800 GT and GTX both at stock speeds. at least percentage wise (comparing the 512 GTX and a G71). Am i making sence.
This would not be Nvidia's first 90nm part. There is 7800GTXGO/7600GO for laptops. And it's not so much a problem if it was Nvidia's first 90nm part. It would matter however, if it were TSMC's first 90nm part.
Now, lets review and see if 700MHz is really as far fetched as you believe.
Nvidia G70 can, and does reach 550MHz (7800GTX512) on a 110nm process. Some have reached higher clocks on air.
Nvidia G71 will have two more quads, and two more vertex processors. On a 90nm LOW-K process. I explained this once before in another thread.
Do you remember when ATI went from the 9800pro to the X800XT? Ok, consider these things. 9800pro is an 8 pipe card on a non low k process.
ATI shrunk it and added 8 more pipes (100% increase) and opted for low k. Even with the 100% increase in pipes, ATI was able to increase clockspeed from 350 (9800pro) to 500 (X800XT) without issue. The X800XTPE was a Phantom edition at 520. So, 150MHz increase with 100% more pipes was doable and done. Now take G70 to G71. 110nm non low k, to 90nm low k. Nvidia increasing the pipes by a mere 25%. 700MHz doesn't seem that far fetched now does it?
If it is done i dout it will be cheap. the GTX512 clocks were achivable with more voltage to the card and a massive cooler that is not cheap by any means. I am guessing that the card will be at least 430mil+ transistors. heat should be an issue aswell. Size matters too!
Also the 9800 XT was not clocked at 350 mhz (it was 412), nor was the 9800 pro either which was clocked at 380 with no low k.
If it is done i am assuming it will be a very very expencive piece of kit. when you take into account the price of the 512mb GTX with the same memory and most probably a same sized chip. All in all i am not denying that Nvidia can produce this card, what i am really thinking is that it could possibly be an unsustainable product like the 512GTX seems to be. or the 6800Ultra before that. It might be sustainable at a high price but i am also thinking that ATI are going about a cheaper route that we should all be very happy to embrace, as cards are already appearing at $500-$600.
Also 8 pipes more on the core is actually a 33% increase or if you like a 6600 on top of what is already there. its only 25% of the actuall core but is an increase of 33.3% over the last one.
We will se in a couple of months time i guess. But i also expect new cards out at around Vista so Nvidia will be leaving very little time between launches (another reason to belive that this is unsustainable). You have to also consider that clock speeds do not rise indefinitly, just like for AMD and Intel their chips have not really moved in speed for a long long time now.
If i am wrong then i will really be supprised but only time will tell. And i wont be happy unless we see at least a few months of availability for the cards.
Another angle on all this would be that 700Mhz is double that of a 6800GT with double pipelines, with more VS's aswell. you can see why so many are doubtfull.
Facebook
Twitter