NVIDIA GeForce GTX 780M Mac Edition vs AMD Radeon R5 M255

VS

NVIDIA GeForce GTX 780M Mac Edition

AMD Radeon R5 M255

We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 780M Mac Edition and 2GB VRAM Radeon R5 M255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 780M Mac Edition 's Advantages

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (160.0GB/s vs 32.00GB/s)

1152 additional rendering cores

AMD Radeon R5 M255 's Advantages

Released 11 months late

Boost Clock has increased by 18% (940MHz vs 797MHz)

Score

Benchmark

FP32 (float)

GeForce GTX 780M Mac Edition +239%

2.448 TFLOPS

Radeon R5 M255

0.721 TFLOPS

GeForce GTX 780M Mac Edition

VS

Radeon R5 M255

Graphics Card

Nov 2013

Release Date

Oct 2014

GeForce 700M

Generation

Gem System

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

771 MHz

Base Clock

925 MHz

797 MHz

Boost Clock

940 MHz

1250 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

32.00GB/s

Render Config

-

Compute Units

6

-

1536

Shading Units

384

128

TMUs

24

32

ROPs

8

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

25.50 GPixel/s

Pixel Rate

7.520 GPixel/s

102.0 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

721.9 GFLOPS

2.448 TFLOPS

FP32 (float)

721.9 GFLOPS

102.0 GFLOPS

FP64 (double)

45.12 GFLOPS

Board Design

122W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

GK104

GPU Name

Topaz

N14E-GTX-A2

GPU Variant

Topaz PRO (216-0858030)

Kepler

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

1.55 billion

294 mm²

Die Size

125 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.2.170

3.0

CUDA

-

5.1

Shader Model

6.5

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