NVIDIA GeForce GTX 780M Mac Edition vs NVIDIA GeForce GTX 850A

VS

NVIDIA GeForce GTX 780M Mac Edition

NVIDIA GeForce GTX 850A

We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 780M Mac Edition and 2GB VRAM GeForce GTX 850A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 780M Mac Edition 's Advantages

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (160.0GB/s vs 28.80GB/s)

896 additional rendering cores

NVIDIA GeForce GTX 850A 's Advantages

Boost Clock has increased by 17% (936MHz vs 797MHz)

Lower TDP (45W vs 122W)

Score

Benchmark

FP32 (float)

GeForce GTX 780M Mac Edition +104%

2.448 TFLOPS

GeForce GTX 850A

1.198 TFLOPS

GeForce GTX 780M Mac Edition

VS

GeForce GTX 850A

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 x16

Clock Speeds

771 MHz

Base Clock

902 MHz

797 MHz

Boost Clock

936 MHz

1250 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

28.80GB/s

Render Config

-

1536

Shading Units

640

128

TMUs

40

32

ROPs

16

-

16 KB (per SMX)

L1 Cache

64 KB (per SMM)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

25.50 GPixel/s

Pixel Rate

14.98 GPixel/s

102.0 GTexel/s

Texture Rate

37.44 GTexel/s

-

2.448 TFLOPS

FP32 (float)

1198 GFLOPS

102.0 GFLOPS

FP64 (double)

37.44 GFLOPS

Board Design

122W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK104

GPU Name

GM107

N14E-GTX-A2

GPU Variant

N15P-GT-A1

Kepler

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

1.87 billion

294 mm²

Die Size

148 mm²

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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