NVIDIA GeForce 840A vs AMD Radeon R9 M290X Mac Edition

VS

NVIDIA GeForce 840A

AMD Radeon R9 M290X Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 2GB VRAM Radeon R9 M290X Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840A 's Advantages

Boost Clock has increased by 15% (1124MHz vs 975MHz)

Lower TDP (33W vs 80W)

AMD Radeon R9 M290X Mac Edition 's Advantages

Released 8 months late

Larger VRAM bandwidth (174.7GB/s vs 16.02GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 840A

0.863 TFLOPS

Radeon R9 M290X Mac Edition +131%

1.997 TFLOPS

GeForce 840A

VS

Radeon R9 M290X Mac Edition

Graphics Card

Mar 2014

Release Date

Nov 2014

GeForce 800A

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1029 MHz

Base Clock

850 MHz

1124 MHz

Boost Clock

975 MHz

1001 MHz

Memory Clock

1365 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

16.02GB/s

Bandwidth

174.7GB/s

Render Config

-

Compute Units

16

-

384

Shading Units

1024

16

TMUs

64

8

ROPs

32

-

64 KB (per SMM)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

31.20 GPixel/s

17.98 GTexel/s

Texture Rate

62.40 GTexel/s

-

863.2 GFLOPS

FP32 (float)

1.997 TFLOPS

26.98 GFLOPS

FP64 (double)

124.8 GFLOPS

Board Design

33W

TDP

80W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GM108

GPU Name

Pitcairn

-

GPU Variant

Pitcairn PRO (215-0828062)

Maxwell

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

2.8 billion

Unknown

Die Size

212 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.3

Vulkan

1.2

5.0

CUDA

-

5.1

Shader Model

5.1

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