AMD Radeon R5 M255 vs NVIDIA GeForce 805A

VS

AMD Radeon R5 M255

NVIDIA GeForce 805A

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 and 1024MB VRAM GeForce 805A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages

Boost Clock has increased by 24% (940MHz vs 758MHz)

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (32.00GB/s vs 16.02GB/s)

192 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 M255 +147%

0.721 TFLOPS

GeForce 805A

0.291 TFLOPS

Radeon R5 M255

VS

GeForce 805A

Graphics Card

Oct 2014

Release Date

Jul 2014

Gem System

Generation

GeForce 800A

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

925 MHz

Base Clock

719 MHz

940 MHz

Boost Clock

758 MHz

1000 MHz

Memory Clock

1001 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

64bit

32.00GB/s

Bandwidth

16.02GB/s

Render Config

6

Compute Units

-

384

Shading Units

192

24

TMUs

16

8

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

6.064 GPixel/s

22.56 GTexel/s

Texture Rate

12.13 GTexel/s

721.9 GFLOPS

FP16 (half)

-

721.9 GFLOPS

FP32 (float)

291.1 GFLOPS

45.12 GFLOPS

FP64 (double)

12.13 GFLOPS

Board Design

Unknown

TDP

15W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Topaz

GPU Name

GK208

Topaz PRO (216-0858030)

GPU Variant

-

GCN 3.0

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.55 billion

Transistors

1.02 billion

125 mm²

Die Size

87 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

3.5

6.5

Shader Model

5.1

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