NVIDIA GeForce GTX 780M vs NVIDIA GeForce GT 820M

VS

NVIDIA GeForce GTX 780M

NVIDIA GeForce GT 820M

We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 780M and 1024MB VRAM GeForce GT 820M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 780M 's Advantages

Boost Clock797MHz

More VRAM (4GB vs 1024GB)

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

1440 additional rendering cores

NVIDIA GeForce GT 820M 's Advantages

Released 6 months late

Lower TDP (15W vs 122W)

Score

Benchmark

FP32 (float)

GeForce GTX 780M +721%

2.448 TFLOPS

GeForce GT 820M

0.298 TFLOPS

GeForce GTX 780M

VS

GeForce GT 820M

Graphics Card

May 2013

Release Date

Nov 2013

GeForce 700M

Generation

GeForce 800M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

771 MHz

Base Clock

-

797 MHz

Boost Clock

-

1250 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

160.0GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

2

1536

Shading Units

96

128

TMUs

16

32

ROPs

8

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

25.50 GPixel/s

Pixel Rate

3.100 GPixel/s

102.0 GTexel/s

Texture Rate

12.40 GTexel/s

-

2.448 TFLOPS

FP32 (float)

297.6 GFLOPS

102.0 GFLOPS

FP64 (double)

24.80 GFLOPS

Board Design

122W

TDP

15W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

GK104

GPU Name

GF117

N14E-GTX-A2

GPU Variant

N15V-GM

Kepler

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

0.585 billion

294 mm²

Die Size

116 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

2.1

5.1

Shader Model

5.1

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