AMD Radeon HD 6670 vs NVIDIA GeForce 8400 GS PCI Rev. 2

VS

AMD Radeon HD 6670

NVIDIA GeForce 8400 GS PCI Rev. 2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 and 512MB VRAM GeForce 8400 GS PCI Rev. 2 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 512GB)

Larger VRAM bandwidth (64.00GB/s vs 8.000GB/s)

464 additional rendering cores

NVIDIA GeForce 8400 GS PCI Rev. 2 's Advantages

Lower TDP (40W vs 66W)

Score

Benchmark

FP32 (float)

Radeon HD 6670 +1869%

0.768 TFLOPS

GeForce 8400 GS PCI Rev. 2

0.039 TFLOPS

Radeon HD 6670

VS

GeForce 8400 GS PCI Rev. 2

Graphics Card

Apr 2011

Release Date

Apr 2007

Northern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCI

Clock Speeds

-

1000 MHz

Memory Clock

500 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

8.000GB/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

32 KB

-

Theoretical Performance

6.400 GPixel/s

Pixel Rate

2.080 GPixel/s

19.20 GTexel/s

Texture Rate

4.160 GTexel/s

-

768.0 GFLOPS

FP32 (float)

39.36 GFLOPS

-

Board Design

66W

TDP

40W

250 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

1x DVI 1x HDMI 1x VGA

None

Power Connectors

None

Graphics Processor

Turks

GPU Name

GT218

Turks XT (215-0803000)

GPU Variant

-

TeraScale 2

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.716 billion

Transistors

0.26 billion

118 mm²

Die Size

57 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.2

5.0

Shader Model

4.1

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