NVIDIA GeForce GTX 680MX Mac Edition vs NVIDIA GeForce GT 820M

VS

NVIDIA GeForce GTX 680MX Mac Edition

NVIDIA GeForce GT 820M

We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX Mac Edition 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 680MX Mac Edition 's Advantages

More VRAM (2GB vs 1024GB)

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

1440 additional rendering cores

NVIDIA GeForce GT 820M 's Advantages

Released 1 years and 1 months late

Lower TDP (15W vs 122W)

Score

Benchmark

FP32 (float)

GeForce GTX 680MX Mac Edition +641%

2.209 TFLOPS

GeForce GT 820M

0.298 TFLOPS

GeForce GTX 680MX Mac Edition

VS

GeForce GT 820M

Graphics Card

Oct 2012

Release Date

Nov 2013

GeForce 600M

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

900 MHz

Memory

2GB

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

23.01 GPixel/s

Pixel Rate

3.100 GPixel/s

92.03 GTexel/s

Texture Rate

12.40 GTexel/s

-

2.209 TFLOPS

FP32 (float)

297.6 GFLOPS

92.03 GFLOPS

FP64 (double)

24.80 GFLOPS

Board Design

122W

TDP

15W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK104

GPU Name

GF117

N13E-GTX2-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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