AMD Radeon HD 6670 vs NVIDIA GeForce 8400 GS

VS

AMD Radeon HD 6670

NVIDIA GeForce 8400 GS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6670 's Advantages

Released 4 years late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (64.00GB/s vs 6.400GB/s)

464 additional rendering cores

NVIDIA GeForce 8400 GS 's Advantages

Lower TDP (40W vs 66W)

Score

Benchmark

FP32 (float)

Radeon HD 6670 +2548%

0.768 TFLOPS

GeForce 8400 GS

0.029 TFLOPS

Radeon HD 6670

VS

GeForce 8400 GS

Graphics Card

Apr 2011

Release Date

Apr 2007

Northern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

6.400GB/s

Render Config

6

Compute Units

-

SM Count

2

480

Shading Units

16

24

TMUs

8

ROPs

4

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

6.400 GPixel/s

Pixel Rate

1.836 GPixel/s

19.20 GTexel/s

Texture Rate

3.672 GTexel/s

-

768.0 GFLOPS

FP32 (float)

29.38 GFLOPS

-

Board Design

66W

TDP

40W

250 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

1x DVI 1x VGA 1x S-Video

None

Power Connectors

None

Graphics Processor

Turks

GPU Name

G86

Turks XT (215-0803000)

GPU Variant

G86-213-A2

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

0.716 billion

Transistors

0.21 billion

118 mm²

Die Size

127 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

5.0

Shader Model

4.0

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