AMD Radeon R5 A255 vs NVIDIA GeForce GTX 660M

VS

AMD Radeon R5 A255

NVIDIA GeForce GTX 660M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 1024MB VRAM GeForce GTX 660M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Released 1 years and 10 months late

NVIDIA GeForce GTX 660M 's Advantages

Boost Clock has increased by 1% (950MHz vs 940MHz)

Score

Benchmark

FP32 (float)

Radeon R5 A255

0.721 TFLOPS

GeForce GTX 660M +1%

0.73 TFLOPS

Radeon R5 A255

VS

GeForce GTX 660M

Graphics Card

Jan 2014

Release Date

Mar 2012

All-In-One

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

925 MHz

Base Clock

835 MHz

940 MHz

Boost Clock

950 MHz

1000 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

64.00GB/s

Render Config

6

Compute Units

-

384

Shading Units

384

24

TMUs

32

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

7.600 GPixel/s

22.56 GTexel/s

Texture Rate

30.40 GTexel/s

-

721.9 GFLOPS

FP32 (float)

729.6 GFLOPS

-

FP64 (double)

30.40 GFLOPS

Board Design

Unknown

TDP

50W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Topaz

GPU Name

GK107

Topaz PRO (216-0858030)

GPU Variant

N13E-GE-A2

GCN 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.55 billion

Transistors

1.27 billion

125 mm²

Die Size

118 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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