AMD Radeon HD 8670A vs NVIDIA GeForce 8400M GT

VS

AMD Radeon HD 8670A

NVIDIA GeForce 8400M GT

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 512MB VRAM GeForce 8400M GT 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 512GB)

368 additional rendering cores

NVIDIA GeForce 8400M GT 's Advantages

Larger VRAM bandwidth (19.20GB/s vs 16.00GB/s)

Lower TDP (14W vs 45W)

Score

Benchmark

FP32 (float)

Radeon HD 8670A +1489%

0.461 TFLOPS

GeForce 8400M GT

0.029 TFLOPS

Radeon HD 8670A

VS

GeForce 8400M GT

Graphics Card

Feb 2013

Release Date

May 2007

All-In-One

Generation

GeForce 8M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

600 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

128bit

16.00GB/s

Bandwidth

19.20GB/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

32 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

1.800 GPixel/s

14.40 GTexel/s

Texture Rate

3.600 GTexel/s

-

460.8 GFLOPS

FP32 (float)

28.80 GFLOPS

FP64 (double)

-

Board Design

45W

TDP

14W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Mars

GPU Name

G86

Mars XT

GPU Variant

G86-603-A2

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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