AMD Radeon HD 7970M vs AMD Radeon HD 6770M Mac Edition

VS

AMD Radeon HD 7970M AMD Radeon HD 6770M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7970M and 512MB VRAM Radeon HD 6770M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970M 's Advantages

Released 1 years and 3 months late

Larger VRAM bandwidth (153.6GB/s vs 57.60GB/s)

800 additional rendering cores

AMD Radeon HD 6770M Mac Edition 's Advantages

Lower TDP (35W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 7970M +212%

2.176 TFLOPS

Radeon HD 6770M Mac Edition

0.696 TFLOPS

Radeon HD 7970M

VS

Radeon HD 6770M Mac Edition

Graphics Card

Apr 2012

Release Date

Jan 2011

London

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-A (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

57.60GB/s

Render Config

-

SM Count

-

20

Compute Units

6

1280

Shading Units

480

80

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

27.20 GPixel/s

Pixel Rate

5.800 GPixel/s

68.00 GTexel/s

Texture Rate

17.40 GTexel/s

-

FP16 (half)

-

2.176 TFLOPS

FP32 (float)

696.0 GFLOPS

136.0 GFLOPS

FP64 (double)

-

Graphics Processor

Wimbledon

GPU Name

Whistler

Wimbledon XT (216-0836036)

GPU Variant

Whistler XT (216-0810001)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

0.716 billion

212 mm²

Die Size

104 mm²

Board Design

100W

TDP

35W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

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