NVIDIA GeForce 8400 vs AMD Radeon HD 6970

VS

NVIDIA GeForce 8400

AMD Radeon HD 6970

We compared two Desktop platform GPUs: 256MB VRAM GeForce 8400 and 2GB VRAM Radeon HD 6970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8400 's Advantages

Lower TDP (25W vs 250W)

AMD Radeon HD 6970 's Advantages

Released 3 years late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (176.0GB/s vs 8.000GB/s)

1528 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400

0.021 TFLOPS

Radeon HD 6970 +12771%

2.703 TFLOPS

GeForce 8400

VS

Radeon HD 6970

Graphics Card

Dec 2007

Release Date

Dec 2010

GeForce 8

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

500 MHz

Memory Clock

1375 MHz

Memory

256MB

Memory Size

2GB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

256bit

8.000GB/s

Bandwidth

176.0GB/s

Render Config

-

Compute Units

24

1

SM Count

-

8

Shading Units

1536

4

TMUs

96

4

ROPs

32

-

L1 Cache

8 KB (per CU)

16 KB

L2 Cache

512 KB

-

Theoretical Performance

2.160 GPixel/s

Pixel Rate

28.16 GPixel/s

2.160 GTexel/s

Texture Rate

84.48 GTexel/s

-

20.80 GFLOPS

FP32 (float)

2.703 TFLOPS

-

FP64 (double)

675.8 GFLOPS

Board Design

25W

TDP

250W

200 W

Suggested PSU

600 W

1x DVI 1x VGA 1x S-Video

Outputs

2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

G98

GPU Name

Cayman

-

GPU Variant

Cayman XT (215-0807007)

Tesla

Architecture

TeraScale 3

TSMC

Foundry

TSMC

65 nm

Process Size

40 nm

0.21 billion

Transistors

2.64 billion

86 mm²

Die Size

389 mm²

Graphics Features

11.1 (10_0)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

1.1

CUDA

-

4.0

Shader Model

5.0

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