NVIDIA GeForce 840A vs AMD Radeon R7 M340

VS

NVIDIA GeForce 840A

AMD Radeon R7 M340

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 1024MB VRAM Radeon R7 M340 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 57% (1124MHz vs 715MHz)

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (16.02GB/s vs 16.00GB/s)

AMD Radeon R7 M340 's Advantages

Released 1 years and 9 months late

Score

Benchmark

FP32 (float)

GeForce 840A +57%

0.863 TFLOPS

Radeon R7 M340

0.549 TFLOPS

GeForce 840A

VS

Radeon R7 M340

Graphics Card

Mar 2014

Release Date

Dec 2015

GeForce 800A

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1029 MHz

Base Clock

620 MHz

1124 MHz

Boost Clock

715 MHz

1001 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

64bit

Memory Bus

64bit

16.02GB/s

Bandwidth

16.00GB/s

Render Config

-

Compute Units

6

-

384

Shading Units

384

16

TMUs

24

8

ROPs

8

-

64 KB (per SMM)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

5.720 GPixel/s

17.98 GTexel/s

Texture Rate

17.16 GTexel/s

-

863.2 GFLOPS

FP32 (float)

549.1 GFLOPS

26.98 GFLOPS

FP64 (double)

34.32 GFLOPS

Board Design

33W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

GM108

GPU Name

Opal

-

GPU Variant

Opal PRO

Maxwell

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

0.95 billion

Unknown

Die Size

77 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

2.1 (1.2)

1.3

Vulkan

1.2.170

5.0

CUDA

-

5.1

Shader Model

6.5 (5.1)

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