NVIDIA GeForce 840A vs AMD Radeon E8870

VS

NVIDIA GeForce 840A

AMD Radeon E8870

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 4GB VRAM Radeon E8870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840A 's Advantages

Boost Clock1124MHz

Lower TDP (33W vs 75W)

AMD Radeon E8870 's Advantages

Released 1 years and 6 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (96.00GB/s vs 16.02GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 840A

0.863 TFLOPS

Radeon E8870 +77%

1.536 TFLOPS

GeForce 840A

VS

Radeon E8870

Graphics Card

Mar 2014

Release Date

Sep 2015

GeForce 800A

Generation

Embedded

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

1029 MHz

Base Clock

-

1124 MHz

Boost Clock

-

1001 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

4GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

96.00GB/s

Render Config

-

Compute Units

12

-

384

Shading Units

768

16

TMUs

48

8

ROPs

16

-

64 KB (per SMM)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

16.00 GPixel/s

17.98 GTexel/s

Texture Rate

48.00 GTexel/s

-

863.2 GFLOPS

FP32 (float)

1.536 TFLOPS

26.98 GFLOPS

FP64 (double)

96.00 GFLOPS

Board Design

33W

TDP

75W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GM108

GPU Name

Saturn

-

GPU Variant

Saturn PRO

Maxwell

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

2.08 billion

Unknown

Die Size

160 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.3

Vulkan

1.2

5.0

CUDA

-

5.1

Shader Model

6.3

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