NVIDIA GeForce GTX 660 vs ATI Radeon HD 4450

VS

NVIDIA GeForce GTX 660 ATI Radeon HD 4450

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 512MB VRAM Radeon HD 4450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Released 10 months late

Boost Clock1032MHz

Larger VRAM bandwidth (144.2GB/s vs 6.400GB/s)

880 additional rendering cores

ATI Radeon HD 4450 's Advantages

Lower TDP (25W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 +1963%

1.981 TFLOPS

Radeon HD 4450

0.096 TFLOPS

GeForce GTX 660

VS

Radeon HD 4450

Graphics Card

Sep 2012

Release Date

Nov 2011

GeForce 600

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

192bit

Memory Bus

64bit

144.2GB/s

Bandwidth

6.400GB/s

Render Config

-

SM Count

-

Compute Units

1

960

Shading Units

80

TMUs

8

24

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

64 KB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

2.400 GPixel/s

82.56 GTexel/s

Texture Rate

4.800 GTexel/s

-

FP16 (half)

-

1.981 TFLOPS

FP32 (float)

96.00 GFLOPS

82.56 GFLOPS

FP64 (double)

-

Graphics Processor

GK106

GPU Name

RV710

GK106-400-A1

GPU Variant

RV710 (215-0725016)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.54 billion

Transistors

0.242 billion

221 mm²

Die Size

73 mm²

Board Design

140W

TDP

25W

300 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.3a 1x DisplayPort 1.0

1x 6-pin

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.1

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