AMD Radeon HD 8970M vs AMD Radeon HD 6630M Mac Edition

VS

AMD Radeon HD 8970M AMD Radeon HD 6630M Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM Radeon HD 8970M and 256MB VRAM Radeon HD 6630M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970M 's Advantages

Released 2 years and 4 months late

Boost Clock900MHz

Larger VRAM bandwidth (153.6GB/s vs 19.20GB/s)

800 additional rendering cores

AMD Radeon HD 6630M Mac Edition 's Advantages

Lower TDP (26W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 8970M +380%

2.304 TFLOPS

Radeon HD 6630M Mac Edition

0.48 TFLOPS

Radeon HD 8970M

VS

Radeon HD 6630M Mac Edition

Graphics Card

May 2013

Release Date

Jan 2011

Solar System

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

850 MHz

Base Clock

-

900 MHz

Boost Clock

-

1200 MHz

Memory Clock

600 MHz

Memory

4GB

Memory Size

256MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

19.20GB/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

-

512 KB

L2 Cache

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

4.000 GPixel/s

72.00 GTexel/s

Texture Rate

12.00 GTexel/s

-

FP16 (half)

-

2.304 TFLOPS

FP32 (float)

480.0 GFLOPS

144.0 GFLOPS

FP64 (double)

-

Graphics Processor

Neptune

GPU Name

Whistler

Neptune XT (216-0847000)

GPU Variant

Whistler LP

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

26W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

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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