NVIDIA GeForce 840A vs NVIDIA GeForce 705A

VS

NVIDIA GeForce 840A

NVIDIA GeForce 705A

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 1024MB VRAM GeForce 705A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840A 's Advantages

Boost Clock1124MHz

More VRAM (2GB vs 1024GB)

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

336 additional rendering cores

NVIDIA GeForce 705A 's Advantages

Lower TDP (15W vs 33W)

Score

Benchmark

FP32 (float)

GeForce 840A +848%

0.863 TFLOPS

GeForce 705A

0.091 TFLOPS

GeForce 840A

VS

GeForce 705A

Graphics Card

Mar 2014

Release Date

Jul 2014

GeForce 800A

Generation

GeForce 700A

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1029 MHz

Base Clock

-

1124 MHz

Boost Clock

-

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

-

SM Count

1

384

Shading Units

48

16

TMUs

8

ROPs

4

-

64 KB (per SMM)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

128 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

950.0 MPixel/s

17.98 GTexel/s

Texture Rate

3.800 GTexel/s

-

863.2 GFLOPS

FP32 (float)

91.20 GFLOPS

26.98 GFLOPS

FP64 (double)

7.600 GFLOPS

Board Design

33W

TDP

15W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM108

GPU Name

GF119

-

GPU Variant

GF119 B1

Maxwell

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

Unknown

Transistors

0.292 billion

Unknown

Die Size

79 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

1.3

Vulkan

N/A

5.0

CUDA

2.1

5.1

Shader Model

5.1

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