AMD Radeon R9 M275X vs NVIDIA GeForce GTX 660M

VS

AMD Radeon R9 M275X

NVIDIA GeForce GTX 660M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M275X 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 R9 M275X 's Advantages

Released 1 years and 10 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (72.00GB/s vs 64.00GB/s)

256 additional rendering cores

NVIDIA GeForce GTX 660M 's Advantages

Boost Clock has increased by 3% (950MHz vs 925MHz)

Score

Benchmark

FP32 (float)

Radeon R9 M275X +62%

1.184 TFLOPS

GeForce GTX 660M

0.73 TFLOPS

Radeon R9 M275X

VS

GeForce GTX 660M

Graphics Card

Jan 2014

Release Date

Mar 2012

Gem System

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

900 MHz

Base Clock

835 MHz

925 MHz

Boost Clock

950 MHz

1125 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

72.00GB/s

Bandwidth

64.00GB/s

Render Config

10

Compute Units

-

640

Shading Units

384

40

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

14.80 GPixel/s

Pixel Rate

7.600 GPixel/s

37.00 GTexel/s

Texture Rate

30.40 GTexel/s

-

1184 GFLOPS

FP32 (float)

729.6 GFLOPS

74.00 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

Unknown

TDP

50W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Venus

GPU Name

GK107

Venus XTX (216-0846033)

GPU Variant

N13E-GE-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

1.27 billion

123 mm²

Die Size

118 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

3.0

1.2.170

Vulkan

1.1

-

CUDA

3.0

6.5 (5.1)

Shader Model

5.1

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