NVIDIA GeForce GT 420M vs AMD Radeon R9 M390 Mac Edition

VS

NVIDIA GeForce GT 420M

AMD Radeon R9 M390 Mac Edition

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 2GB VRAM Radeon R9 M390 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 80W)

AMD Radeon R9 M390 Mac Edition 's Advantages

Released 4 years and 8 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (174.7GB/s vs 25.60GB/s)

928 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

Radeon R9 M390 Mac Edition +921%

1.962 TFLOPS

GeForce GT 420M

VS

Radeon R9 M390 Mac Edition

Graphics Card

Sep 2010

Release Date

May 2015

GeForce 400M

Generation

Crystal System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1365 MHz

Memory

512MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

25.60GB/s

Bandwidth

174.7GB/s

Render Config

-

Compute Units

16

2

SM Count

-

96

Shading Units

1024

16

TMUs

64

4

ROPs

32

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

2.000 GPixel/s

Pixel Rate

30.66 GPixel/s

8.000 GTexel/s

Texture Rate

61.31 GTexel/s

-

192.0 GFLOPS

FP32 (float)

1.962 TFLOPS

16.00 GFLOPS

FP64 (double)

122.6 GFLOPS

Board Design

23W

TDP

80W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GF108

GPU Name

Pitcairn

N11P-GE-A1

GPU Variant

Pitcairn PRO (215-0828062)

Fermi

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

2.8 billion

116 mm²

Die Size

212 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

5.1

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