ATI Radeon HD 2900 XTX vs NVIDIA GeForce 8400

VS

ATI Radeon HD 2900 XTX

NVIDIA GeForce 8400

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XTX and 256MB VRAM GeForce 8400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 XTX 's Advantages

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (106.0GB/s vs 8.000GB/s)

312 additional rendering cores

NVIDIA GeForce 8400 's Advantages

Lower TDP (25W vs 240W)

Score

Benchmark

FP32 (float)

Radeon HD 2900 XTX +2166%

0.476 TFLOPS

GeForce 8400

0.021 TFLOPS

Radeon HD 2900 XTX

VS

GeForce 8400

Graphics Card

Unknown

Release Date

Dec 2007

Radeon R600

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

828 MHz

Memory Clock

500 MHz

Memory

512MB

Memory Size

256MB

GDDR3

Memory Type

DDR2

512bit

Memory Bus

64bit

106.0GB/s

Bandwidth

8.000GB/s

Render Config

4

Compute Units

-

SM Count

1

320

Shading Units

8

16

TMUs

4

16

ROPs

4

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

11.89 GPixel/s

Pixel Rate

2.160 GPixel/s

11.89 GTexel/s

Texture Rate

2.160 GTexel/s

-

475.5 GFLOPS

FP32 (float)

20.80 GFLOPS

-

Board Design

240W

TDP

25W

550 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

R600

GPU Name

G98

R600 XTX A11 (215RGMDKA11FG)

GPU Variant

-

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

80 nm

Process Size

65 nm

0.72 billion

Transistors

0.21 billion

420 mm²

Die Size

86 mm²

Graphics Features

10.0 (10_0)

DirectX

11.1 (10_0)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

4.0

Shader Model

4.0

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