ATI Mobility Radeon HD 4850 X2 vs AMD Radeon HD 6870M

VS

ATI Mobility Radeon HD 4850 X2

AMD Radeon HD 6870M

We compared two Mobile platform GPUs: 1024MB VRAM Mobility Radeon HD 4850 X2 and 1024MB VRAM Radeon HD 6870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4850 X2 's Advantages

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

AMD Radeon HD 6870M 's Advantages

Released 2 years late

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4850 X2

0.8 TFLOPS

Radeon HD 6870M +35%

1.08 TFLOPS

Mobility Radeon HD 4850 X2

VS

Radeon HD 6870M

Graphics Card

Jan 2009

Release Date

Jan 2011

M9x

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

700 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

89.60GB/s

Bandwidth

64.00GB/s

Render Config

10

Compute Units

10

-

800

Shading Units

800

40

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

8.000 GPixel/s

Pixel Rate

10.80 GPixel/s

20.00 GTexel/s

Texture Rate

27.00 GTexel/s

-

800.0 GFLOPS

FP32 (float)

1080 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

50W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

M98

GPU Name

Granville

M98 L2 (216-0732019)

GPU Variant

Granville XT (216-0769024)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

1.04 billion

256 mm²

Die Size

166 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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