AMD Radeon HD 7950M vs NVIDIA GeForce GT 640M Mac Edition

VS

AMD Radeon HD 7950M

NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7950M and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950M 's Advantages

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (128.0GB/s vs 40.00GB/s)

896 additional rendering cores

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Released 10 months late

Lower TDP (32W vs 75W)

Score

Benchmark

FP32 (float)

Radeon HD 7950M +213%

1.792 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

Radeon HD 7950M

VS

GeForce GT 640M Mac Edition

Graphics Card

Apr 2012

Release Date

Feb 2013

London

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

128.0GB/s

Bandwidth

40.00GB/s

Render Config

20

Compute Units

-

1280

Shading Units

384

80

TMUs

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

22.40 GPixel/s

Pixel Rate

5.960 GPixel/s

56.00 GTexel/s

Texture Rate

23.84 GTexel/s

-

1.792 TFLOPS

FP32 (float)

572.2 GFLOPS

-

FP64 (double)

23.84 GFLOPS

Board Design

75W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Wimbledon

GPU Name

GK107

Wimbledon PRO

GPU Variant

N13P-GS

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

1.27 billion

212 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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