AMD Radeon R5 A255 vs NVIDIA GeForce GTX 870M

VS

AMD Radeon R5 A255

NVIDIA GeForce GTX 870M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 3GB VRAM GeForce GTX 870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 870M 's Advantages

Boost Clock has increased by 3% (967MHz vs 940MHz)

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (120.0GB/s vs 64.00GB/s)

960 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255

0.721 TFLOPS

GeForce GTX 870M +260%

2.599 TFLOPS

Radeon R5 A255

VS

GeForce GTX 870M

Graphics Card

Jan 2014

Release Date

Mar 2014

All-In-One

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

925 MHz

Base Clock

941 MHz

940 MHz

Boost Clock

967 MHz

1000 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

192bit

64.00GB/s

Bandwidth

120.0GB/s

Render Config

6

Compute Units

-

384

Shading Units

1344

24

TMUs

112

8

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

27.08 GPixel/s

22.56 GTexel/s

Texture Rate

108.3 GTexel/s

-

721.9 GFLOPS

FP32 (float)

2.599 TFLOPS

-

FP64 (double)

108.3 GFLOPS

Board Design

Unknown

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Topaz

GPU Name

GK104

Topaz PRO (216-0858030)

GPU Variant

N15E-GT-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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