NVIDIA GeForce 705A vs NVIDIA GeForce 840M

VS

NVIDIA GeForce 705A

NVIDIA GeForce 840M

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

Main Differences

NVIDIA GeForce 705A 's Advantages

Lower TDP (15W vs 33W)

NVIDIA GeForce 840M 's Advantages

Boost Clock1124MHz

More VRAM (2GB vs 1024GB)

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

336 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 705A

0.091 TFLOPS

GeForce 840M +848%

0.863 TFLOPS

GeForce 705A

VS

GeForce 840M

Graphics Card

Jul 2014

Release Date

Mar 2014

GeForce 700A

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1029 MHz

-

Boost Clock

1124 MHz

900 MHz

Memory Clock

1001 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

64bit

14.40GB/s

Bandwidth

16.02GB/s

Render Config

-

1

SM Count

-

48

Shading Units

384

8

TMUs

16

4

ROPs

8

-

64 KB (per SM)

L1 Cache

64 KB (per SMM)

128 KB

L2 Cache

1024 KB

-

Theoretical Performance

950.0 MPixel/s

Pixel Rate

8.992 GPixel/s

3.800 GTexel/s

Texture Rate

17.98 GTexel/s

-

91.20 GFLOPS

FP32 (float)

863.2 GFLOPS

7.600 GFLOPS

FP64 (double)

26.98 GFLOPS

Board Design

15W

TDP

33W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF119

GPU Name

GM108

GF119 B1

GPU Variant

N15S-GT

Fermi 2.0

Architecture

Maxwell

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.292 billion

Transistors

Unknown

79 mm²

Die Size

Unknown

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.3

2.1

CUDA

5.0

5.1

Shader Model

5.1

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