NVIDIA GeForce 820M vs AMD Radeon R7 M340

VS

NVIDIA GeForce 820M

AMD Radeon R7 M340

We compared two Mobile platform GPUs: 2GB VRAM GeForce 820M 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 820M 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (28.83GB/s vs 16.00GB/s)

AMD Radeon R7 M340 's Advantages

Released 9 months late

Boost Clock715MHz

Score

Benchmark

FP32 (float)

GeForce 820M +13%

0.622 TFLOPS

Radeon R7 M340

0.549 TFLOPS

GeForce 820M

VS

Radeon R7 M340

Graphics Card

Mar 2015

Release Date

Dec 2015

GeForce 800M

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

620 MHz

-

Boost Clock

715 MHz

901 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

64bit

28.83GB/s

Bandwidth

16.00GB/s

Render Config

-

Compute Units

6

-

384

Shading Units

384

32

TMUs

24

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

6.480 GPixel/s

Pixel Rate

5.720 GPixel/s

25.92 GTexel/s

Texture Rate

17.16 GTexel/s

-

622.1 GFLOPS

FP32 (float)

549.1 GFLOPS

25.92 GFLOPS

FP64 (double)

34.32 GFLOPS

Board Design

45W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

GK107

GPU Name

Opal

-

GPU Variant

Opal PRO

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

0.95 billion

118 mm²

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)

1.1

Vulkan

1.2.170

3.0

CUDA

-

5.1

Shader Model

6.5 (5.1)

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