AMD Radeon HD 8970M vs NVIDIA GeForce 840M

VS

AMD Radeon HD 8970M

NVIDIA GeForce 840M

We compared two Mobile platform GPUs: 4GB VRAM Radeon HD 8970M 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 8970M 's Advantages

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (153.6GB/s vs 16.02GB/s)

896 additional rendering cores

NVIDIA GeForce 840M 's Advantages

Released 10 months late

Boost Clock has increased by 25% (1124MHz vs 900MHz)

Lower TDP (33W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 8970M +166%

2.304 TFLOPS

GeForce 840M

0.863 TFLOPS

Radeon HD 8970M

VS

GeForce 840M

Graphics Card

May 2013

Release Date

Mar 2014

Solar System

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

850 MHz

Base Clock

1029 MHz

900 MHz

Boost Clock

1124 MHz

1200 MHz

Memory Clock

1001 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

16.02GB/s

Render Config

20

Compute Units

-

1280

Shading Units

384

80

TMUs

16

32

ROPs

8

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

8.992 GPixel/s

72.00 GTexel/s

Texture Rate

17.98 GTexel/s

-

2.304 TFLOPS

FP32 (float)

863.2 GFLOPS

144.0 GFLOPS

FP64 (double)

26.98 GFLOPS

Board Design

100W

TDP

33W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Neptune

GPU Name

GM108

Neptune XT (216-0847000)

GPU Variant

N15S-GT

GCN 1.0

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

Unknown

212 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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