AMD Radeon HD 7970M vs NVIDIA GeForce 8400M G

VS

AMD Radeon HD 7970M

NVIDIA GeForce 8400M G

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7970M and 256MB VRAM GeForce 8400M G to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970M 's Advantages

Released 4 years and 11 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (153.6GB/s vs 6.400GB/s)

1272 additional rendering cores

NVIDIA GeForce 8400M G 's Advantages

Lower TDP (10W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 7970M +16638%

2.176 TFLOPS

GeForce 8400M G

0.013 TFLOPS

Radeon HD 7970M

VS

GeForce 8400M G

Graphics Card

Apr 2012

Release Date

May 2007

London

Generation

GeForce 8M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

6.400GB/s

Render Config

20

Compute Units

-

SM Count

1

1280

Shading Units

8

80

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

16 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

1.600 GPixel/s

68.00 GTexel/s

Texture Rate

3.200 GTexel/s

-

2.176 TFLOPS

FP32 (float)

12.80 GFLOPS

136.0 GFLOPS

FP64 (double)

-

Board Design

100W

TDP

10W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Wimbledon

GPU Name

G86

Wimbledon XT (216-0836036)

GPU Variant

NB8M-SE

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

2.8 billion

Transistors

0.21 billion

212 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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