AMD Radeon HD 7850M vs AMD Radeon HD 6970M Mac Edition

VS

AMD Radeon HD 7850M

AMD Radeon HD 6970M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7850M and 2GB VRAM Radeon HD 6970M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7850M 's Advantages

Released 8 months late

Lower TDP (40W vs 75W)

AMD Radeon HD 6970M Mac Edition 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 64.00GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7850M

0.864 TFLOPS

Radeon HD 6970M Mac Edition +51%

1.306 TFLOPS

Radeon HD 7850M

VS

Radeon HD 6970M Mac Edition

Graphics Card

Apr 2012

Release Date

Aug 2011

London

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

115.2GB/s

Render Config

10

Compute Units

12

-

640

Shading Units

960

40

TMUs

48

16

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

10.80 GPixel/s

Pixel Rate

21.76 GPixel/s

27.00 GTexel/s

Texture Rate

32.64 GTexel/s

-

864.0 GFLOPS

FP32 (float)

1306 GFLOPS

54.00 GFLOPS

FP64 (double)

-

Board Design

40W

TDP

75W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Heathrow

GPU Name

Blackcomb

Heathrow PRO

GPU Variant

Blackcomb XT (216-0811000)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

1.7 billion

123 mm²

Die Size

212 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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