X-bit labs

ATI RADEON 9800

Club 3D Volari Duo V8 Ultra

NVIDIA GeForce FX 5950

Manufacturing technology

0.15micron

0.13 micron

0.13micron

Number of transistors

110-115mln

80mln

135mln

Chip frequency

412MHz

2x350MHz

475MHz

Graphics memory controller

256bit
DDR SDRAM

2x128bit
DDR-II SDRAM

256bit
DDR SDRAM

Graphics memory frequency

730MHz
(365MHz DDR)

900MHz
(450MHz DDR-II)

950MHz
(475MHz DDR)

Peak memory bus bandwidth

23.4GB/s

28.8GB/s

30.4GB/s

Max graphics memory size

256MB

512MB

256MB

AGP interface

AGP 3.0 4x/8x

AGP 3.0 4x/8x

AGP 3.0 4x/8x

Pixel Pipelines, Pixel Shaders

Pixel pipelines

8

2x8

4, 8

Texturing unites per pipeline

1

1

2, 0

Max number of textures during multi-texturing

8

8?

8

Texture filtering types

bi-linear
anisotropic
tri-linear
tri-linear + anisotropic

bi-linear
anisotropic
tri-linear
tri-linear + anisotropic

bi-linear
anisotropic
tri-linear
tri-linear + anisotropic

Max anisotropy level

16

4

8

Pixel shaders version

v.2.0 (f-buffer, v2.0+)

v2.0

v.2.0+

Branching, subroutines and loops

none

n/a

none

Max number of textures per shader

16

16

16

Max number of texture instructions

32

n/a

1024

Max number of arithmetic instructions

64 (+64)

n/a

1024

Max number of instructions per shader

96 (+64)

n/a

1024

Registers

2 color registers,
32 constant registers,
8 texture coordinates registers,
16 TMU identification registers,
12 temporary registers,
4 resulting color registers,
1 resulting Z register

?

2 color registers,
512 (1024) constant registers,
8 texture coordinates registers,
16 TMU identification registers,
16 (32) temporary registers,
4 resulting color registers,
1 resulting Z register

Data representation formats

Fixed point,
16bit floating point,
32bit floating point

Fixed point,
16bit floating point,
32bit floating point

Fixed point,
16bit floating point,
32bit floating point

Internal Pixel Shader Pipeline Precision

96bit pixel precision/24bit floating point precision

?

128bit pixel precision/32bit floating point precision, 16bit floating point precision

Vertex pipelines, vertex shaders

Vertex pipelines

4

2x2

3

Vertex shaders version

v.2.0

v.2.0

v.2.0+

Branching, subroutines and loops

Static

Static?

Dynamic

Max number of instructions per shader

256

256

256

Max number of instructions with loops extension

65536

65536

65536

Registers

16 input registers,
12 temporary registers,
256 constant floating-point registers,
16 constant integer registers,
16 Boolean registers,
1 address register,
1 loops counter register,
8 output registers for texture coordinates,
1 fog color output register,
1 vertex position output register,
1 pixel size output register,
2 output registers for diffuse/mirror color component

n/a

16 input registers,
16 temporary registers,
256 constant floating-point registers,
256 constant integer registers,
256 Boolean registers,
1 address register,
1 loops counter register,
8 output registers for texture coordinates,
1 fog color output register,
1 vertex position output register,
1 pixel size output register,
2 output registers for diffuse/mirror color component

Data representation formats

32bit floating-point

32bit floating-point

Full-Scene Anti-Aliasing

FSAA methods

Rotated grid multi-sampling
(RGMS)

Supersampling?

Supersampling,
Ordered grid multi-sampling

(OGSS, OGMS)

Number of samples

2, 4, 6

2,4

2 (OGSS, OGMS),
Quincunx,
4 (OGSS, OGMS, OGSS+OGMS),
6 (OGSS+OGMS),
8 (OGSS+OGMS)

Technologies aimed at higher memory bandwidth efficiency

Hidden Surfaces Removal (HSR)

Yes

Yes

Yes

Frame-buffer compression

Yes

n/a

Yes

Z-buffer compression

Yes

n/a

Yes

Other techniques

Yes

Yes

Yes