AMD Radeon HD 8670A vs NVIDIA GeForce 8400M GS

VS

AMD Radeon HD 8670A

NVIDIA GeForce 8400M GS

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 256MB VRAM GeForce 8400M GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Released 5 years and 9 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (16.00GB/s vs 6.400GB/s)

368 additional rendering cores

NVIDIA GeForce 8400M GS 's Advantages

Lower TDP (11W vs 45W)

Score

Benchmark

FP32 (float)

Radeon HD 8670A +1673%

0.461 TFLOPS

GeForce 8400M GS

0.026 TFLOPS

Radeon HD 8670A

VS

GeForce 8400M GS

Graphics Card

Feb 2013

Release Date

May 2007

All-In-One

Generation

GeForce 8M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-I

Clock Speeds

-

1000 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

256MB

DDR3

Memory Type

DDR2

64bit

Memory Bus

64bit

16.00GB/s

Bandwidth

6.400GB/s

Render Config

6

Compute Units

-

SM Count

2

384

Shading Units

16

24

TMUs

8

ROPs

4

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

16 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

1.600 GPixel/s

14.40 GTexel/s

Texture Rate

3.200 GTexel/s

-

460.8 GFLOPS

FP32 (float)

25.60 GFLOPS

28.80 GFLOPS

FP64 (double)

-

Board Design

45W

TDP

11W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Mars

GPU Name

G86

Mars XT

GPU Variant

NB8M-GS

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

0.95 billion

Transistors

0.21 billion

77 mm²

Die Size

127 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

5.1

Shader Model

4.0

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