NVIDIA GeForce GTX 645 OEM vs AMD Radeon HD 6450 OEM

VS

NVIDIA GeForce GTX 645 OEM

AMD Radeon HD 6450 OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 512MB VRAM Radeon HD 6450 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 2 years and 2 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 8.528GB/s)

416 additional rendering cores

AMD Radeon HD 6450 OEM 's Advantages

Lower TDP (18W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM +374%

0.949 TFLOPS

Radeon HD 6450 OEM

0.2 TFLOPS

GeForce GTX 645 OEM

VS

Radeon HD 6450 OEM

Graphics Card

Apr 2013

Release Date

Feb 2011

GeForce 600

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

533 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

8.528GB/s

Render Config

-

Compute Units

2

-

576

Shading Units

160

48

TMUs

8

16

ROPs

4

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

2.500 GPixel/s

39.55 GTexel/s

Texture Rate

5.000 GTexel/s

-

949.2 GFLOPS

FP32 (float)

200.0 GFLOPS

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

18W

250 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

GK106

GPU Name

Caicos

GK106-200-A1

GPU Variant

Junbonator

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

0.37 billion

221 mm²

Die Size

67 mm²

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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