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

VS

AMD Radeon R5 M255

NVIDIA GeForce GTX 780M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 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

AMD Radeon R5 M255 's Advantages

Released 11 months late

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

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

Score

Benchmark

FP32 (float)

Radeon R5 M255

0.721 TFLOPS

GeForce GTX 780M Mac Edition +239%

2.448 TFLOPS

Radeon R5 M255

VS

GeForce GTX 780M Mac Edition

Graphics Card

Oct 2014

Release Date

Nov 2013

Gem System

Generation

GeForce 700M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

925 MHz

Base Clock

771 MHz

940 MHz

Boost Clock

797 MHz

1000 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

4GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

32.00GB/s

Bandwidth

160.0GB/s

Render Config

6

Compute Units

-

384

Shading Units

1536

24

TMUs

128

8

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

25.50 GPixel/s

22.56 GTexel/s

Texture Rate

102.0 GTexel/s

721.9 GFLOPS

FP16 (half)

-

721.9 GFLOPS

FP32 (float)

2.448 TFLOPS

45.12 GFLOPS

FP64 (double)

102.0 GFLOPS

Board Design

Unknown

TDP

122W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Topaz

GPU Name

GK104

Topaz PRO (216-0858030)

GPU Variant

N14E-GTX-A2

GCN 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.55 billion

Transistors

3.54 billion

125 mm²

Die Size

294 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2.170

Vulkan

1.1

-

CUDA

3.0

6.5

Shader Model

5.1

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