NVIDIA GeForce 820A vs NVIDIA GeForce GTX 780M Mac Edition

VS

NVIDIA GeForce 820A NVIDIA GeForce GTX 780M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 820A 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 820A 's Advantages

Lower TDP (15W vs 122W)

NVIDIA GeForce GTX 780M Mac Edition 's Advantages

Boost Clock797MHz

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (160.0GB/s vs 14.40GB/s)

1440 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 820A

0.298 TFLOPS

GeForce GTX 780M Mac Edition +721%

2.448 TFLOPS

GeForce 820A

VS

GeForce GTX 780M Mac Edition

Graphics Card

Mar 2014

Release Date

Nov 2013

GeForce 800A

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

900 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

4GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

14.40GB/s

Bandwidth

160.0GB/s

Render Config

2

SM Count

-

Compute Units

-

96

Shading Units

1536

16

TMUs

128

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

512 KB

Theoretical Performance

3.100 GPixel/s

Pixel Rate

25.50 GPixel/s

12.40 GTexel/s

Texture Rate

102.0 GTexel/s

-

FP16 (half)

-

297.6 GFLOPS

FP32 (float)

2.448 TFLOPS

24.80 GFLOPS

FP64 (double)

102.0 GFLOPS

Graphics Processor

GF117

GPU Name

GK104

N15V-GM

GPU Variant

N14E-GTX-A2

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.585 billion

Transistors

3.54 billion

116 mm²

Die Size

294 mm²

Board Design

15W

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

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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