NVIDIA GeForce 945A vs NVIDIA GeForce GTX 780M Mac Edition

VS

NVIDIA GeForce 945A

NVIDIA GeForce GTX 780M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 945A 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 945A 's Advantages

Released 1 years and 4 months late

Boost Clock has increased by 49% (1189MHz vs 797MHz)

Lower TDP (33W vs 122W)

NVIDIA GeForce GTX 780M Mac Edition 's Advantages

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 40.10GB/s)

1152 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 945A

0.913 TFLOPS

GeForce GTX 780M Mac Edition +168%

2.448 TFLOPS

GeForce 945A

VS

GeForce GTX 780M Mac Edition

Graphics Card

Mar 2015

Release Date

Nov 2013

GeForce 900A

Generation

GeForce 700M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

1006 MHz

Base Clock

771 MHz

1189 MHz

Boost Clock

797 MHz

1253 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

256bit

40.10GB/s

Bandwidth

160.0GB/s

Render Config

-

384

Shading Units

1536

24

TMUs

128

8

ROPs

32

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

9.512 GPixel/s

Pixel Rate

25.50 GPixel/s

28.54 GTexel/s

Texture Rate

102.0 GTexel/s

-

913.2 GFLOPS

FP32 (float)

2.448 TFLOPS

28.54 GFLOPS

FP64 (double)

102.0 GFLOPS

Board Design

33W

TDP

122W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM108

GPU Name

GK104

-

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

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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