G80 / R600

[Pants]

Hi,

Just though I would make a thread for some speculation on these cards. I have read a rumour that both have taped out.

I have also read that the R600 uses a 64 unified shader architecture, so there can be any ratio of vertex / pixel / geometry shaders.

The G80 apparently has a 48 dis-unified setup with a fixed number of vertex / pixel / geometry shaders.

The R600 would have more overheads selecting shaders, due to the nature on a unified architecture, but may be advantageous running DX10 games. The G80 won't have the same overheads, so perhaps would be better suited to DX9 games, but loose out in DX10?

I'm a n00b rith regards to gfx architecture so take what I have said with a helping of salt. Please correct me if i'm wrong or offer your input.

Too early to speculate?

Cheers!

 

[sunlitsix]

a link to where you read this would be nice

 

[pinkacidbootson]

The G80 apparently has 16 vertex and geometry shades, i'll try to find the link.

Link

Inquirer says it has 32 pixel pipelines, aswell as 16 vertex and geometry shaders.

 

[Gibbs]

yea pst a lnk mate i need some info on these

 

[Gashman]

i also heard the G80 was DX10 improved 7900 core with some pipeline increases

 

[Pants]

My (probably unreliable) info is from http://www.theinquirer.net

Type in R600 on search and it will bring up all of the info...

I have read about the architectures somewhere else, i'll try to find the links...


(edit) This speculates on the pipelines of the two GPU's, if you look at the PDF images...

(edit 2) Sorry Can't find the article suggesting the G80 may be better at DX9 and the R600 at DX10... nevermind, we can still speculate.