AMD Radeon HD 6870M vs NVIDIA GeForce 840M

VS

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 2GB VRAM GeForce 840M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870M 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 16.02GB/s)

416 additional rendering cores

NVIDIA GeForce 840M 's Advantages

Released 3 years and 2 months late

Boost Clock1124MHz

More VRAM (2GB vs 1GB)

Lower TDP (33W vs 50W)

Score

Benchmark

FP32 (float)

Radeon HD 6870M +25%

1.08 TFLOPS

GeForce 840M

0.863 TFLOPS

Radeon HD 6870M

VS

GeForce 840M

Graphics Card

Jan 2011

Release Date

Mar 2014

Vancouver

Generation

GeForce 800M

Mobile

Type

Mobile

MXM-B (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

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

16.02GB/s

Render Config

-

SM Count

-

10

Compute Units

-

800

Shading Units

384

40

TMUs

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

64 KB (per SMM)

256 KB

L2 Cache

1024 KB

Theoretical Performance

10.80 GPixel/s

Pixel Rate

8.992 GPixel/s

27.00 GTexel/s

Texture Rate

17.98 GTexel/s

-

FP16 (half)

-

1080 GFLOPS

FP32 (float)

863.2 GFLOPS

-

FP64 (double)

26.98 GFLOPS

Graphics Processor

Granville

GPU Name

GM108

Granville XT (216-0769024)

GPU Variant

N15S-GT

TeraScale 2

Architecture

Maxwell

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

Unknown

166 mm²

Die Size

Unknown

Board Design

50W

TDP

33W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.3

-

CUDA

5.0

Shader Model

5.1

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