NVIDIA GeForce 840M vs ATI Mobility Radeon HD 3670

VS

NVIDIA GeForce 840M ATI Mobility Radeon HD 3670

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 256MB VRAM Mobility Radeon HD 3670 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840M 's Advantages

Released 6 years and 2 months late

Boost Clock1124MHz

264 additional rendering cores

ATI Mobility Radeon HD 3670 's Advantages

Larger VRAM bandwidth (25.60GB/s vs 16.02GB/s)

Lower TDP (30W vs 33W)

Score

Benchmark

FP32 (float)

GeForce 840M +429%

0.863 TFLOPS

Mobility Radeon HD 3670

0.163 TFLOPS

GeForce 840M

VS

Mobility Radeon HD 3670

Graphics Card

Mar 2014

Release Date

Jan 2008

GeForce 800M

Generation

M8x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1029 MHz

Base Clock

-

1124 MHz

Boost Clock

-

1001 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

256MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

25.60GB/s

Render Config

-

SM Count

-

Compute Units

3

384

Shading Units

120

16

TMUs

8

ROPs

4

-

Tensor Cores

-

RT Cores

-

64 KB (per SMM)

L1 Cache

-

1024 KB

L2 Cache

128 KB

Theoretical Performance

8.992 GPixel/s

Pixel Rate

2.720 GPixel/s

17.98 GTexel/s

Texture Rate

5.440 GTexel/s

-

FP16 (half)

-

863.2 GFLOPS

FP32 (float)

163.2 GFLOPS

26.98 GFLOPS

FP64 (double)

-

Graphics Processor

GM108

GPU Name

M86

N15S-GT

GPU Variant

-

Maxwell

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

Unknown

Transistors

0.378 billion

Unknown

Die Size

135 mm²

Board Design

33W

TDP

30W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

N/A

1.3

Vulkan

N/A

5.0

CUDA

-

5.1

Shader Model

4.1

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