AMD Radeon R7 M340 vs NVIDIA GeForce 405M

VS

AMD Radeon R7 M340

NVIDIA GeForce 405M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R7 M340 and 512MB VRAM GeForce 405M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 M340 's Advantages

Released 4 years and 11 months late

Boost Clock715MHz

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (16.00GB/s vs 12.80GB/s)

368 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 M340 +1307%

0.549 TFLOPS

GeForce 405M

0.039 TFLOPS

Radeon R7 M340

VS

GeForce 405M

Graphics Card

Dec 2015

Release Date

Jan 2011

Gem System

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

620 MHz

Base Clock

-

715 MHz

Boost Clock

-

1000 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

64bit

16.00GB/s

Bandwidth

12.80GB/s

Render Config

6

Compute Units

-

SM Count

2

384

Shading Units

16

24

TMUs

8

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

32 KB

-

Theoretical Performance

5.720 GPixel/s

Pixel Rate

2.424 GPixel/s

17.16 GTexel/s

Texture Rate

4.848 GTexel/s

-

549.1 GFLOPS

FP32 (float)

38.78 GFLOPS

34.32 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

14W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Opal

GPU Name

GT218

Opal PRO

GPU Variant

-

GCN 1.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

0.95 billion

Transistors

0.26 billion

77 mm²

Die Size

57 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

2.1 (1.2)

OpenCL

1.1

1.2.170

Vulkan

N/A

-

CUDA

1.2

6.5 (5.1)

Shader Model

4.1

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