AMD Radeon R9 M390 Mac Edition vs AMD Radeon HD 6950M

VS

AMD Radeon R9 M390 Mac Edition AMD Radeon HD 6950M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 1024MB VRAM Radeon HD 6950M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390 Mac Edition 's Advantages

Released 4 years and 4 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (174.7GB/s vs 115.2GB/s)

64 additional rendering cores

AMD Radeon HD 6950M 's Advantages

Lower TDP (50W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +76%

1.962 TFLOPS

Radeon HD 6950M

1.114 TFLOPS

Radeon R9 M390 Mac Edition

VS

Radeon HD 6950M

Graphics Card

May 2015

Release Date

Jan 2011

Crystal System

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

1365 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

174.7GB/s

Bandwidth

115.2GB/s

Render Config

-

SM Count

-

16

Compute Units

12

1024

Shading Units

960

64

TMUs

48

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

30.66 GPixel/s

Pixel Rate

18.56 GPixel/s

61.31 GTexel/s

Texture Rate

27.84 GTexel/s

-

FP16 (half)

-

1.962 TFLOPS

FP32 (float)

1114 GFLOPS

122.6 GFLOPS

FP64 (double)

-

Graphics Processor

Pitcairn

GPU Name

Blackcomb

Pitcairn PRO (215-0828062)

GPU Variant

Blackcomb PRO

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.7 billion

212 mm²

Die Size

212 mm²

Board Design

80W

TDP

50W

-

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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