AMD Radeon HD 6650M vs NVIDIA GeForce GT 640M

VS

AMD Radeon HD 6650M

NVIDIA GeForce GT 640M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6650M and 2GB VRAM GeForce GT 640M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6650M 's Advantages

96 additional rendering cores

NVIDIA GeForce GT 640M 's Advantages

Released 1 years and 2 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (28.80GB/s vs 25.60GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 6650M +20%

0.576 TFLOPS

GeForce GT 640M

0.48 TFLOPS

Radeon HD 6650M

VS

GeForce GT 640M

Graphics Card

Jan 2011

Release Date

Mar 2012

Vancouver

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

800 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

25.60GB/s

Bandwidth

28.80GB/s

Render Config

6

Compute Units

-

480

Shading Units

384

24

TMUs

32

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

5.000 GPixel/s

14.40 GTexel/s

Texture Rate

20.00 GTexel/s

-

576.0 GFLOPS

FP32 (float)

480.0 GFLOPS

-

FP64 (double)

20.00 GFLOPS

Board Design

Unknown

TDP

32W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Whistler

GPU Name

GK107

Whistler LE (216-0810028)

GPU Variant

N13P-GS

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.716 billion

Transistors

1.27 billion

118 mm²

Die Size

118 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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