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ATI's new R5xx chips are PCI-E as well as AGP Quote:
According to my sources, these cards are taped out, working, and in the back hallways of ATI, as they have been for the past 6 months. Rumours of issues with DirectX and SM3.0 have been squashed, and the card looks to be an awesome performer. I have bolded the last part of the quote for a reason...ATI is under non-disclosure from Microsoft, so no details will come about these new chips until the XBOX360 is unveiled in a few weeks, or so i have been told. Microsoft, of course, wants the jump on SONY, who will be launching thier product just hours ahead of the machine from Microsoft. On the XBOX360 front, seems that although the pictures that have been revealed of the past few days are of a actual working XBOX360, the design may change slightly when it hits retail...but not very much. Pretty much what we have seen is what we will be able to buy in the fall.
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Interesting stuff! SM 3.0 on ATI will be a good thing. I had heard that it might be SM3.x, i.e. something higher than 3.0. |
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Quote:
The most interesting thing there is an RV515 AGP, which might be just what ATI needs to recapture the mainstream 3d market. Very nice to see that the X600/X700 PCI-E only train of thought has gone out the window. Also strange that pixel pipelines are mentioned, when ATI said themselves that they intended to scrap pixel pipelines in favour of a unified shader pipe design. I cant wait to see how well the SM3.0 implementation that ATI use stacks up to the 6800 SM3.0 implementation. Nvidia is on the verge of releasing their first SM3.0 designed driver, so we might just wait and see.
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The ATI SM3.0 should fare just as well as the nVidia counterpart, and from what i hear, maybe even 15% better. Unified shader pipes will happen with the next DX SM protocol, but not until then, from what i have read. I have also heard that they are still playing with the code to find out what order to texture the vertex data in a unified pipe...as this is what will make or break a top-level performer, and not much else. In regards to the number of pixel pipelines, well.... ![]() 90nm tech. Raw speed will only be limited by memory mhz and timings, besides heat. 1.2v-1.6v running voltages for the GPU.
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From xbit as well. Quote:
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Here's some more, related more specifically to the XBOX360, rather than the ATI retail line-up. Quote:
The programmers needed someting to work with... ON the r5xx memory front, GDDR4 is looking to be a real possibility on these cards, but that may have been delayed as an introduction to the market, now that samsung has 512mb blocks of GDDR3. What i do know for sure is that the r5xx series need MEGA memory bandwidth, and timings are not a very important factor...sure tighter timings will give a small speed boost, but paying for such mem does not justify the cost when an increase in bandwidth is cheaper to implement. The current 512mb X850's (some 3500 of them out there, i hear...can't wait for the r5xx to come out so i can get one of these cards out of a "Mac-rosoft", or a "dellard"; bioware has thier main offices in the same building as my son's dentist, and i have snuck in there a few times now). The shipping of these 512mb cards is why you can find alot of X800XTPE cards for sale used right now. the only question is whether the GDDR4 that samsung is producing in small numbers is shipping to ATI or the competition.
__________________ Last edited by cadaveca; 24th April, 2005 at 05:20 PM. |
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