AMD Radeon HD 7850M vs ATI Mobility Radeon HD 4850 X2

VS

AMD Radeon HD 7850M

ATI Mobility Radeon HD 4850 X2

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7850M and 1024MB VRAM Mobility Radeon HD 4850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7850M 's Advantages

Released 3 years and 3 months late

More VRAM (2GB vs 1024GB)

ATI Mobility Radeon HD 4850 X2 's Advantages

Larger VRAM bandwidth (89.60GB/s vs 64.00GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7850M +8%

0.864 TFLOPS

Mobility Radeon HD 4850 X2

0.8 TFLOPS

Radeon HD 7850M

VS

Mobility Radeon HD 4850 X2

Graphics Card

Apr 2012

Release Date

Jan 2009

London

Generation

M9x

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

700 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

89.60GB/s

Render Config

10

Compute Units

10

-

640

Shading Units

800

40

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.80 GPixel/s

Pixel Rate

8.000 GPixel/s

27.00 GTexel/s

Texture Rate

20.00 GTexel/s

-

864.0 GFLOPS

FP32 (float)

800.0 GFLOPS

54.00 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

40W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

Heathrow

GPU Name

M98

Heathrow PRO

GPU Variant

M98 L2 (216-0732019)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.5 billion

Transistors

0.956 billion

123 mm²

Die Size

256 mm²

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

-

5.1

Shader Model

4.1

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