AMD Radeon HD 7850M vs NVIDIA GeForce GTX 660M Mac Edition

VS

AMD Radeon HD 7850M

NVIDIA GeForce GTX 660M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7850M 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 7850M 's Advantages

More VRAM (2GB vs 512GB)

256 additional rendering cores

Lower TDP (40W vs 50W)

NVIDIA GeForce GTX 660M Mac Edition 's Advantages

Released 1 years late

Larger VRAM bandwidth (80.00GB/s vs 64.00GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 7850M +18%

0.864 TFLOPS

GeForce GTX 660M Mac Edition

0.73 TFLOPS

Radeon HD 7850M

VS

GeForce GTX 660M Mac Edition

Graphics Card

Apr 2012

Release Date

Apr 2013

London

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

1000 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

80.00GB/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

10.80 GPixel/s

Pixel Rate

7.600 GPixel/s

27.00 GTexel/s

Texture Rate

30.40 GTexel/s

-

864.0 GFLOPS

FP32 (float)

729.6 GFLOPS

54.00 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

40W

TDP

50W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Heathrow

GPU Name

GK107

Heathrow PRO

GPU Variant

-

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

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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