AMD Radeon HD 7970M vs ATI Mobility Radeon HD 4870 X2

VS

AMD Radeon HD 7970M ATI Mobility Radeon HD 4870 X2

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7970M and 1024MB VRAM Mobility Radeon HD 4870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970M 's Advantages

Released 3 years and 3 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (153.6GB/s vs 89.60GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7970M +147%

2.176 TFLOPS

Mobility Radeon HD 4870 X2

0.88 TFLOPS

Radeon HD 7970M

VS

Mobility Radeon HD 4870 X2

Graphics Card

Apr 2012

Release Date

Jan 2009

London

Generation

M9x

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

700 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

89.60GB/s

Render Config

-

SM Count

-

20

Compute Units

10

1280

Shading Units

800

80

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

27.20 GPixel/s

Pixel Rate

8.800 GPixel/s

68.00 GTexel/s

Texture Rate

22.00 GTexel/s

-

FP16 (half)

-

2.176 TFLOPS

FP32 (float)

880.0 GFLOPS

136.0 GFLOPS

FP64 (double)

176.0 GFLOPS

Graphics Processor

Wimbledon

GPU Name

M98

Wimbledon XT (216-0836036)

GPU Variant

M98 XT L2 (216-0732023)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.956 billion

212 mm²

Die Size

256 mm²

Board Design

100W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

4.1

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