AMD Radeon HD 7450A vs NVIDIA GeForce GT 640M

VS

AMD Radeon HD 7450A

NVIDIA GeForce GT 640M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 7450A 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 7450A 's Advantages

Lower TDP (25W vs 32W)

NVIDIA GeForce GT 640M 's Advantages

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (28.80GB/s vs 12.80GB/s)

224 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7450A

0.2 TFLOPS

GeForce GT 640M +140%

0.48 TFLOPS

Radeon HD 7450A

VS

GeForce GT 640M

Graphics Card

Jan 2012

Release Date

Mar 2012

All-In-One

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

800 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

12.80GB/s

Bandwidth

28.80GB/s

Render Config

2

Compute Units

-

160

Shading Units

384

8

TMUs

32

4

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

2.500 GPixel/s

Pixel Rate

5.000 GPixel/s

5.000 GTexel/s

Texture Rate

20.00 GTexel/s

-

200.0 GFLOPS

FP32 (float)

480.0 GFLOPS

-

FP64 (double)

20.00 GFLOPS

Board Design

25W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Caicos

GPU Name

GK107

-

GPU Variant

N13P-GS

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

1.27 billion

67 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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