NVIDIA GeForce 840M vs NVIDIA GeForce GTX 780M Mac Edition

VS

NVIDIA GeForce 840M NVIDIA GeForce GTX 780M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 4GB VRAM GeForce GTX 780M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840M 's Advantages

Boost Clock has increased by 41% (1124MHz vs 797MHz)

Lower TDP (33W vs 122W)

NVIDIA GeForce GTX 780M Mac Edition 's Advantages

More VRAM (4GB vs 2GB)

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

1152 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 840M

0.863 TFLOPS

GeForce GTX 780M Mac Edition +183%

2.448 TFLOPS

GeForce 840M

VS

GeForce GTX 780M Mac Edition

Graphics Card

Mar 2014

Release Date

Nov 2013

GeForce 800M

Generation

GeForce 700M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

1029 MHz

Base Clock

771 MHz

1124 MHz

Boost Clock

797 MHz

1001 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

4GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

16.02GB/s

Bandwidth

160.0GB/s

Render Config

-

SM Count

-

Compute Units

-

384

Shading Units

1536

16

TMUs

128

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

512 KB

Theoretical Performance

8.992 GPixel/s

Pixel Rate

25.50 GPixel/s

17.98 GTexel/s

Texture Rate

102.0 GTexel/s

-

FP16 (half)

-

863.2 GFLOPS

FP32 (float)

2.448 TFLOPS

26.98 GFLOPS

FP64 (double)

102.0 GFLOPS

Graphics Processor

GM108

GPU Name

GK104

N15S-GT

GPU Variant

N14E-GTX-A2

Maxwell

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

3.54 billion

Unknown

Die Size

294 mm²

Board Design

33W

TDP

122W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

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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