Printable View
just posted in cooper's thread, but there is a difference between the actual memory interface and the ring-bus. On the X1800 at least, the ring bus is 512-bit and the mem. interface is 256-bit. I'm kinda guessin its the same thing on X1600, but with 256/128 sepcs.
Hmmm, you may be right, here is a Newegg description of one that is out now:
http://www.newegg.com/Product/Produc...82E16814131317
Down under the memory description.
Can anyone confirm if the actual memory interface is getting a bump to 256bit? Or are we still looking at only 128bit?Quote:
Memory Interface 128-bit
After looking a bit I guess I answered my own question.
Here is a link to the original X1600 page, which already talks about the 256bit ring-bus:
http://www.ati.com/products/RadeonX1600/index.html
Still wondering if they will allow a 256bit memory interface instead of the damn 128bit. I think that we would be looking at a steadfast competitor to the 6800GS if it gets it.
Firstly, to avoid any confusion (this'll be moved to ATI News thread btw, not new news)... the X1600XT's memory bus is 128-bit times two...like the X1800XT's bus is 256-bit x 2 for 512-bit ring bus. Its still a 128-bit memory interface, and only overclocks will prove if memory bandwith scales the same as current hardware with 128-bit buses.
Because of this the X1600XT can either have 128-bit times two or 256-bit imes two, nothing in the middle. And ATI is not keen on giving the X1600XT 512-bit ring bus as that'll mean 44.8Gb/s of memory bandwith which along with its shader processing power will require greater power consumption, more heat and not to mention a bigger pcb.
Following is information is summary of speculation on X1700...
The RV535 (X1700) might be based on a 80nm die size and early reports suggest twice the amount of TMUs as the X1600 but no word on ROPs.
It may well be 8-1-1-1 (8 TMUs) or if the fact that its going to be released alongside the R580 has anything to do with it, it has a greater chance of being 8-1-2-1 resulting in 16 shader pipelines. That may seem optimistic, but remember Nvidia will release its own 7600 in response to this, so the nex gen mainstream battle begins with the x1600...what it ends with will be known March 2006.
Perkam
You get the X1800XTPE for free when you get the X1800XT.
Perkam
Thanks for the reply perkham, I didn't know that the memory architecture was set up that way. That was very informative.
Quote:
Originally Posted by perkam
why are they will be exact same?
no different memory chips....?
ATI's R580 has 16 pipelines but 48 Pixel Shader units
Source
Hopefully this wasn`t published before :)
So ATI turnes all it`s strenght to improove grafics look - smooth move. The actual pure speed performance already is very good and has room for the future
I think this has run its course...and xs news will be focusing on news-based stickies...as in product based, instead of company based.
Perkam