NVIDIA GeForce 8800 Ultra vs ATI Radeon HD 2900 XT

VS

NVIDIA GeForce 8800 Ultra

ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 768MB VRAM GeForce 8800 Ultra and 512MB VRAM Radeon HD 2900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8800 Ultra 's Advantages

More VRAM (768GB vs 512GB)

Lower TDP (171W vs 215W)

ATI Radeon HD 2900 XT 's Advantages

Larger VRAM bandwidth (106.0GB/s vs 103.7GB/s)

192 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8800 Ultra

0.387 TFLOPS

Radeon HD 2900 XT +22%

0.476 TFLOPS

GeForce 8800 Ultra

VS

Radeon HD 2900 XT

Graphics Card

May 2007

Release Date

May 2007

GeForce 8

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1080 MHz

Memory Clock

828 MHz

Memory

768MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

384bit

Memory Bus

512bit

103.7GB/s

Bandwidth

106.0GB/s

Render Config

-

Compute Units

4

16

SM Count

-

128

Shading Units

320

32

TMUs

16

24

ROPs

16

-

96 KB

L2 Cache

256 KB

-

Theoretical Performance

14.69 GPixel/s

Pixel Rate

11.89 GPixel/s

39.17 GTexel/s

Texture Rate

11.89 GTexel/s

-

387.1 GFLOPS

FP32 (float)

475.5 GFLOPS

-

Board Design

171W

TDP

215W

450 W

Suggested PSU

550 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

G80

GPU Name

R600

G80-450-A3

GPU Variant

R600 XT (215RGMDKA13FG)

Tesla

Architecture

TeraScale

TSMC

Foundry

TSMC

90 nm

Process Size

80 nm

0.681 billion

Transistors

0.72 billion

484 mm²

Die Size

420 mm²

Graphics Features

11.1 (10_0)

DirectX

10.0 (10_0)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1 (1.0)

OpenCL

N/A

Vulkan

N/A

1.0

CUDA

-

4.0

Shader Model

4.0

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