AMD Radeon R5 A255 vs NVIDIA GeForce 800M

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We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 1024MB VRAM GeForce 800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Boost Clock940MHz

Larger VRAM bandwidth (64.00GB/s vs 14.40GB/s)

336 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255 +407%

0.721 TFLOPS

GeForce 800M

0.142 TFLOPS

Radeon R5 A255

VS

GeForce 800M

Graphics Card

Jan 2014

Release Date

Mar 2014

All-In-One

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

925 MHz

Base Clock

-

940 MHz

Boost Clock

-

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

1

6

Compute Units

-

384

Shading Units

48

24

TMUs

8

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

128 KB

Theoretical Performance

7.520 GPixel/s

Pixel Rate

1.476 GPixel/s

22.56 GTexel/s

Texture Rate

5.904 GTexel/s

-

FP16 (half)

-

721.9 GFLOPS

FP32 (float)

141.7 GFLOPS

-

FP64 (double)

11.81 GFLOPS

Graphics Processor

Topaz

GPU Name

GF117

Topaz PRO (216-0858030)

GPU Variant

N14M-GL

GCN 3.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.55 billion

Transistors

0.585 billion

125 mm²

Die Size

116 mm²

Board Design

Unknown

TDP

15W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

1.1

1.2.170

Vulkan

N/A

-

CUDA

2.1

6.5

Shader Model

5.1

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