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

VS

NVIDIA GeForce GTX 775M Mac Edition

NVIDIA GeForce 840A

We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 775M Mac Edition and 2GB VRAM GeForce 840A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 775M Mac Edition 's Advantages

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

960 additional rendering cores

NVIDIA GeForce 840A 's Advantages

Boost Clock1124MHz

Lower TDP (33W vs 100W)

Score

Benchmark

FP32 (float)

GeForce GTX 775M Mac Edition +148%

2.142 TFLOPS

GeForce 840A

0.863 TFLOPS

GeForce GTX 775M Mac Edition

VS

GeForce 840A

Graphics Card

Nov 2013

Release Date

Mar 2014

GeForce 700M

Generation

GeForce 800A

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1029 MHz

-

Boost Clock

1124 MHz

1250 MHz

Memory Clock

1001 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

160.0GB/s

Bandwidth

16.02GB/s

Render Config

-

1344

Shading Units

384

112

TMUs

16

32

ROPs

8

-

16 KB (per SMX)

L1 Cache

64 KB (per SMM)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

22.32 GPixel/s

Pixel Rate

8.992 GPixel/s

89.26 GTexel/s

Texture Rate

17.98 GTexel/s

-

2.142 TFLOPS

FP32 (float)

863.2 GFLOPS

89.26 GFLOPS

FP64 (double)

26.98 GFLOPS

Board Design

100W

TDP

33W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK104

GPU Name

GM108

N13E-GTX-A2

GPU Variant

-

Kepler

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

Unknown

294 mm²

Die Size

Unknown

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

5.0

5.1

Shader Model

5.1

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