AMD Radeon R9 M390 Mac Edition vs NVIDIA GeForce 820M

VS

AMD Radeon R9 M390 Mac Edition

NVIDIA GeForce 820M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 2GB VRAM GeForce 820M 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

Larger VRAM bandwidth (174.7GB/s vs 28.83GB/s)

640 additional rendering cores

NVIDIA GeForce 820M 's Advantages

Lower TDP (45W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +215%

1.962 TFLOPS

GeForce 820M

0.622 TFLOPS

Radeon R9 M390 Mac Edition

VS

GeForce 820M

Graphics Card

May 2015

Release Date

Mar 2015

Crystal System

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1365 MHz

Memory Clock

901 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

174.7GB/s

Bandwidth

28.83GB/s

Render Config

16

Compute Units

-

1024

Shading Units

384

64

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

30.66 GPixel/s

Pixel Rate

6.480 GPixel/s

61.31 GTexel/s

Texture Rate

25.92 GTexel/s

-

1.962 TFLOPS

FP32 (float)

622.1 GFLOPS

122.6 GFLOPS

FP64 (double)

25.92 GFLOPS

Board Design

80W

TDP

45W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Pitcairn

GPU Name

GK107

Pitcairn PRO (215-0828062)

GPU Variant

-

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

1.27 billion

212 mm²

Die Size

118 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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