NVIDIA GeForce GT 420M vs NVIDIA GeForce GTX 780M Mac Edition

VS

NVIDIA GeForce GT 420M

NVIDIA GeForce GTX 780M Mac Edition

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M 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 GT 420M 's Advantages

Lower TDP (23W vs 122W)

NVIDIA GeForce GTX 780M Mac Edition 's Advantages

Released 3 years and 2 months late

Boost Clock797MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (160.0GB/s vs 25.60GB/s)

1440 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

GeForce GTX 780M Mac Edition +1175%

2.448 TFLOPS

GeForce GT 420M

VS

GeForce GTX 780M Mac Edition

Graphics Card

Sep 2010

Release Date

Nov 2013

GeForce 400M

Generation

GeForce 700M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

771 MHz

-

Boost Clock

797 MHz

800 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

4GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

25.60GB/s

Bandwidth

160.0GB/s

Render Config

-

2

SM Count

-

96

Shading Units

1536

16

TMUs

128

4

ROPs

32

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

2.000 GPixel/s

Pixel Rate

25.50 GPixel/s

8.000 GTexel/s

Texture Rate

102.0 GTexel/s

-

192.0 GFLOPS

FP32 (float)

2.448 TFLOPS

16.00 GFLOPS

FP64 (double)

102.0 GFLOPS

Board Design

23W

TDP

122W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF108

GPU Name

GK104

N11P-GE-A1

GPU Variant

N14E-GTX-A2

Fermi

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

3.54 billion

116 mm²

Die Size

294 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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