NVIDIA GeForce GTX 660M Mac Edition vs AMD Radeon HD 6490M

VS

NVIDIA GeForce GTX 660M Mac Edition AMD Radeon HD 6490M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 512MB VRAM Radeon HD 6490M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

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)

224 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660M Mac Edition +185%

0.73 TFLOPS

Radeon HD 6490M

0.256 TFLOPS

GeForce GTX 660M Mac Edition

VS

Radeon HD 6490M

Graphics Card

Apr 2013

Release Date

Jan 2011

GeForce 600M

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1250 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

80.00GB/s

Bandwidth

25.60GB/s

Render Config

-

SM Count

-

Compute Units

2

384

Shading Units

160

32

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

Theoretical Performance

7.600 GPixel/s

Pixel Rate

3.200 GPixel/s

30.40 GTexel/s

Texture Rate

6.400 GTexel/s

-

FP16 (half)

-

729.6 GFLOPS

FP32 (float)

256.0 GFLOPS

30.40 GFLOPS

FP64 (double)

-

Graphics Processor

GK107

GPU Name

Seymour

-

GPU Variant

Seymour XTX S3 (216-0809024)

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

0.37 billion

118 mm²

Die Size

67 mm²

Board Design

50W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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