AMD Radeon HD 6650M vs NVIDIA GeForce GTX 660M Mac Edition

VS

AMD Radeon HD 6650M

NVIDIA GeForce GTX 660M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6650M and 512MB VRAM GeForce GTX 660M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6650M 's Advantages

More VRAM (1024GB vs 512GB)

96 additional rendering cores

NVIDIA GeForce GTX 660M Mac Edition 's Advantages

Released 2 years and 3 months late

Larger VRAM bandwidth (80.00GB/s vs 25.60GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 6650M

0.576 TFLOPS

GeForce GTX 660M Mac Edition +26%

0.73 TFLOPS

Radeon HD 6650M

VS

GeForce GTX 660M Mac Edition

Graphics Card

Jan 2011

Release Date

Apr 2013

Vancouver

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

800 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

25.60GB/s

Bandwidth

80.00GB/s

Render Config

6

Compute Units

-

480

Shading Units

384

24

TMUs

32

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

7.600 GPixel/s

14.40 GTexel/s

Texture Rate

30.40 GTexel/s

-

576.0 GFLOPS

FP32 (float)

729.6 GFLOPS

-

FP64 (double)

30.40 GFLOPS

Board Design

Unknown

TDP

50W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Whistler

GPU Name

GK107

Whistler LE (216-0810028)

GPU Variant

-

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.716 billion

Transistors

1.27 billion

118 mm²

Die Size

118 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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