NVIDIA GeForce 840A vs NVIDIA GeForce GTX 775M Mac Edition

VS

NVIDIA GeForce 840A

NVIDIA GeForce GTX 775M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 2GB VRAM GeForce GTX 775M Mac Edition 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 100W)

NVIDIA GeForce GTX 775M Mac Edition 's Advantages

Larger VRAM bandwidth (160.0GB/s vs 16.02GB/s)

960 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 840A

0.863 TFLOPS

GeForce GTX 775M Mac Edition +148%

2.142 TFLOPS

GeForce 840A

VS

GeForce GTX 775M Mac Edition

Graphics Card

Mar 2014

Release Date

Nov 2013

GeForce 800A

Generation

GeForce 700M

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

1250 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

16.02GB/s

Bandwidth

160.0GB/s

Render Config

-

384

Shading Units

1344

16

TMUs

112

8

ROPs

32

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

22.32 GPixel/s

17.98 GTexel/s

Texture Rate

89.26 GTexel/s

-

863.2 GFLOPS

FP32 (float)

2.142 TFLOPS

26.98 GFLOPS

FP64 (double)

89.26 GFLOPS

Board Design

33W

TDP

100W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM108

GPU Name

GK104

-

GPU Variant

N13E-GTX-A2

Maxwell

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

3.54 billion

Unknown

Die Size

294 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

3.0

5.1

Shader Model

5.1

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