NVIDIA GeForce 840M vs AMD Radeon HD 8670M

VS

NVIDIA GeForce 840M

AMD Radeon HD 8670M

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 1024MB VRAM Radeon HD 8670M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840M 's Advantages

Released 1 years late

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

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (16.02GB/s vs 14.40GB/s)

64 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 840M +38%

0.863 TFLOPS

Radeon HD 8670M

0.624 TFLOPS

GeForce 840M

VS

Radeon HD 8670M

Graphics Card

Mar 2014

Release Date

Mar 2013

GeForce 800M

Generation

Solar System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1029 MHz

Base Clock

925 MHz

1124 MHz

Boost Clock

975 MHz

1001 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

64bit

Memory Bus

64bit

16.02GB/s

Bandwidth

14.40GB/s

Render Config

-

Compute Units

5

-

384

Shading Units

320

16

TMUs

20

8

ROPs

8

-

64 KB (per SMM)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

128 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

7.800 GPixel/s

17.98 GTexel/s

Texture Rate

19.50 GTexel/s

-

863.2 GFLOPS

FP32 (float)

624.0 GFLOPS

26.98 GFLOPS

FP64 (double)

39.00 GFLOPS

Board Design

33W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

GM108

GPU Name

Sun

N15S-GT

GPU Variant

Sun S3 XT (216-0841009)

Maxwell

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

0.69 billion

Unknown

Die Size

56 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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