AMD Radeon HD 8670A vs NVIDIA GeForce 840M

VS

AMD Radeon HD 8670A

NVIDIA GeForce 840M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 2GB VRAM GeForce 840M 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 and 1 months late

Boost Clock1124MHz

More VRAM (2GB vs 1024GB)

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

Lower TDP (33W vs 45W)

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

GeForce 840M +87%

0.863 TFLOPS

Radeon HD 8670A

VS

GeForce 840M

Graphics Card

Feb 2013

Release Date

Mar 2014

All-In-One

Generation

GeForce 800M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1029 MHz

-

Boost Clock

1124 MHz

1000 MHz

Memory Clock

1001 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

64bit

16.00GB/s

Bandwidth

16.02GB/s

Render Config

6

Compute Units

-

384

Shading Units

384

24

TMUs

16

8

ROPs

8

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

128 KB

L2 Cache

1024 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

8.992 GPixel/s

14.40 GTexel/s

Texture Rate

17.98 GTexel/s

-

460.8 GFLOPS

FP32 (float)

863.2 GFLOPS

28.80 GFLOPS

FP64 (double)

26.98 GFLOPS

Board Design

45W

TDP

33W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Mars

GPU Name

GM108

Mars XT

GPU Variant

N15S-GT

GCN 1.0

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

Unknown

77 mm²

Die Size

Unknown

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

5.0

5.1

Shader Model

5.1

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