why do fx cards perform so badly in 3dmark05

[tyx]

OK, i see where this is going

I have decided to get a 5900XT by leadtek.
Thanks guys!!

[ChrisRay]

Originally Posted by zakelwe

From your table

2 vertex shaders offer a loss of 300 to 500 points
8 pixel shaders offer a loss of 900 to 1400 points

So your conclusion of "The fact that 2 vertex units can offer a similar loss to 8 pixel shader units" does not match your own table. Your table shows 2x -3x greater loss when losing 8 pixel pipelines than 2 vertex units.

Like I said at the very beginiing, better to gain 4 pixel pipelines when modding a 6800 than the 1 vertex unit for 3dmark05.

Regards

Andy

You realise there are 8 pixel shader units in 1 quad? 2 quads is 16 shader units. You arguing a point you simply dont seem to understand.

1 quad should have a higher effect than 1 vertex unit, because of the pixel shader architecture of a quad. The graph here shows how 2 vertex units can offer a similar performance deficit to 1 quad, (IE 4 shader units and 4 non dedicated shader units, 8 Shader units per Quad, Including a 25% reduction in Fillrate)

[Fahim]

It seems that difference between 16x1:6VP & 16x1:4VP is higher than difference between 16x1:6VP & 12x1:6VP.

Difference between 16x1:6VP & 16x1:4VP = 495 3DMarks
Difference between 16x1:6VP & 12x1:6VP = 407 3DMarks

That illustrates that 2VP is important than one Quad, atleast in 3DMark05.

[kev13dd]

Originally Posted by kahloq

To answer the topic starters post. The 9800 pro is a good card. So are the 5900/5950. 9800 beats 5900/5950 in D3D, but fx series wins in opengl However these cards are still priced out rather high after the new gens came out and are still priced to high. If you can wait, get a 6600GT AGP. OR, wait for the 6700 series. There is also the possibilty of getting a 6200 and soft modding it to a 6600. There was an article on the front page.
http://translate.google.com/translat...hp%3Fid%3D1225

Have you seen some of the benchmarks for Doom 3? 5900 vs 9800?

It's a pretty dang good tie, with the 5900 pulling ahead in some lower resolution, and the 9800 comming ahead with the eye candy

K

[Fahim]

There are some rumors with pretty tight proof that with upcoming 70.16 driver, FX Series PS 2.0 performance will be increase upto 60%. Check HERE

[Fahim]

Originally Posted by kev13dd

Have you seen some of the benchmarks for Doom 3? 5900 vs 9800?

It's a pretty dang good tie, with the 5900 pulling ahead in some lower resolution, and the 9800 comming ahead with the eye candy

K

I have the results...

ABIT Siluro GeForce FX 5900 OTES 128MB (400,850) w/ 66.31

1024x768x32 ~ High Settings = 38.1 FPS

ATI RADEON 9800 PRO 128MB (380,680) w/ Beta 8.07

1024x768x32 ~ High Settings = 48.4 FPS

1024x768x32 ~ High Settings = 43.6 FPS w/ CAT 04.8

[THE VIKING]

The FX series has never been particularly good with shader-intensive programs.