AMD Radeon HD 6970M Mac Edition vs AMD Radeon HD 8670M

VS

AMD Radeon HD 6970M Mac Edition

AMD Radeon HD 8670M

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6970M Mac Edition and 1024MB VRAM Radeon HD 8670M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970M Mac Edition 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (115.2GB/s vs 14.40GB/s)

640 additional rendering cores

AMD Radeon HD 8670M 's Advantages

Released 1 years and 7 months late

Boost Clock975MHz

Score

Benchmark

FP32 (float)

Radeon HD 6970M Mac Edition +109%

1.306 TFLOPS

Radeon HD 8670M

0.624 TFLOPS

Radeon HD 6970M Mac Edition

VS

Radeon HD 8670M

Graphics Card

Aug 2011

Release Date

Mar 2013

Vancouver

Generation

Solar System

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

975 MHz

900 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

14.40GB/s

Render Config

12

Compute Units

5

-

960

Shading Units

320

48

TMUs

20

32

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

21.76 GPixel/s

Pixel Rate

7.800 GPixel/s

32.64 GTexel/s

Texture Rate

19.50 GTexel/s

-

1306 GFLOPS

FP32 (float)

624.0 GFLOPS

-

FP64 (double)

39.00 GFLOPS

Board Design

75W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Blackcomb

GPU Name

Sun

Blackcomb XT (216-0811000)

GPU Variant

Sun S3 XT (216-0841009)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

0.69 billion

212 mm²

Die Size

56 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

2.1 (1.2)

N/A

Vulkan

1.2.170

-

5.0

Shader Model

6.5 (5.1)

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