NVIDIA GeForce GTX 660M Mac Edition vs AMD Radeon E8870

VS

NVIDIA GeForce GTX 660M Mac Edition AMD Radeon E8870

We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 4GB VRAM Radeon E8870 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

Lower TDP (50W vs 75W)

AMD Radeon E8870 's Advantages

Released 2 years and 5 months late

Larger VRAM bandwidth (96.00GB/s vs 80.00GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660M Mac Edition

0.73 TFLOPS

Radeon E8870 +110%

1.536 TFLOPS

GeForce GTX 660M Mac Edition

VS

Radeon E8870

Graphics Card

Apr 2013

Release Date

Sep 2015

GeForce 600M

Generation

Embedded

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

1250 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

80.00GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

-

Compute Units

12

384

Shading Units

768

32

TMUs

48

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

7.600 GPixel/s

Pixel Rate

16.00 GPixel/s

30.40 GTexel/s

Texture Rate

48.00 GTexel/s

-

FP16 (half)

-

729.6 GFLOPS

FP32 (float)

1.536 TFLOPS

30.40 GFLOPS

FP64 (double)

96.00 GFLOPS

Graphics Processor

GK107

GPU Name

Saturn

-

GPU Variant

Saturn PRO

Kepler

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

2.08 billion

118 mm²

Die Size

160 mm²

Board Design

50W

TDP

75W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.3

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