NVIDIA GeForce GT 645M vs AMD Radeon HD 6450A

VS

NVIDIA GeForce GT 645M AMD Radeon HD 6450A

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 645M and 512MB VRAM Radeon HD 6450A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645M 's Advantages

Released 1 years and 6 months late

Larger VRAM bandwidth (28.80GB/s vs 8.528GB/s)

224 additional rendering cores

AMD Radeon HD 6450A 's Advantages

Lower TDP (25W vs 32W)

Score

Benchmark

FP32 (float)

GeForce GT 645M +172%

0.544 TFLOPS

Radeon HD 6450A

0.2 TFLOPS

GeForce GT 645M

VS

Radeon HD 6450A

Graphics Card

Oct 2012

Release Date

Apr 2011

GeForce 600M

Generation

All-In-One

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-A (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

533 MHz

Memory

2GB

Memory Size

512MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

64bit

28.80GB/s

Bandwidth

8.528GB/s

Render Config

-

SM Count

-

Compute Units

2

384

Shading Units

160

32

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

Theoretical Performance

5.672 GPixel/s

Pixel Rate

2.500 GPixel/s

22.69 GTexel/s

Texture Rate

5.000 GTexel/s

-

FP16 (half)

-

544.5 GFLOPS

FP32 (float)

200.0 GFLOPS

22.69 GFLOPS

FP64 (double)

-

Graphics Processor

GK107

GPU Name

Caicos

N13P-GS

GPU Variant

-

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

0.37 billion

118 mm²

Die Size

67 mm²

Board Design

32W

TDP

25W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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