NVIDIA GeForce 840A vs NVIDIA GeForce 825M

VS

NVIDIA GeForce 840A

NVIDIA GeForce 825M

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 1024MB VRAM GeForce 825M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840A 's Advantages

Boost Clock has increased by 19% (1124MHz vs 941MHz)

More VRAM (2GB vs 1024GB)

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

Score

Benchmark

FP32 (float)

GeForce 840A +19%

0.863 TFLOPS

GeForce 825M

0.723 TFLOPS

GeForce 840A

VS

GeForce 825M

Graphics Card

Mar 2014

Release Date

Jan 2014

GeForce 800A

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1029 MHz

Base Clock

850 MHz

1124 MHz

Boost Clock

941 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

-

384

Shading Units

384

16

TMUs

32

8

ROPs

8

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

7.528 GPixel/s

17.98 GTexel/s

Texture Rate

30.11 GTexel/s

-

863.2 GFLOPS

FP32 (float)

722.7 GFLOPS

26.98 GFLOPS

FP64 (double)

30.11 GFLOPS

Board Design

33W

TDP

33W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GM108

GPU Name

GK208

-

Maxwell

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

1.02 billion

Unknown

Die Size

87 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

5.0

CUDA

3.5

5.1

Shader Model

5.1

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