NVIDIA GeForce GTX 660M Mac Edition vs AMD Radeon HD 6870M

VS

NVIDIA GeForce GTX 660M Mac Edition AMD Radeon HD 6870M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 1024MB VRAM Radeon HD 6870M 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 64.00GB/s)

AMD Radeon HD 6870M 's Advantages

More VRAM (1024GB vs 512GB)

416 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660M Mac Edition

0.73 TFLOPS

Radeon HD 6870M +47%

1.08 TFLOPS

GeForce GTX 660M Mac Edition

VS

Radeon HD 6870M

Graphics Card

Apr 2013

Release Date

Jan 2011

GeForce 600M

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

1250 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

80.00GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

Compute Units

10

384

Shading Units

800

32

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

7.600 GPixel/s

Pixel Rate

10.80 GPixel/s

30.40 GTexel/s

Texture Rate

27.00 GTexel/s

-

FP16 (half)

-

729.6 GFLOPS

FP32 (float)

1080 GFLOPS

30.40 GFLOPS

FP64 (double)

-

Graphics Processor

GK107

GPU Name

Granville

-

GPU Variant

Granville XT (216-0769024)

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

1.04 billion

118 mm²

Die Size

166 mm²

Board Design

50W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

No outputs

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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