NVIDIA GeForce GTX 660 Rev. 2 vs ATI Radeon HD 4750

VS

NVIDIA GeForce GTX 660 Rev. 2

ATI Radeon HD 4750

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 512MB VRAM Radeon HD 4750 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Released 5 years late

Boost Clock1032MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (144.2GB/s vs 51.20GB/s)

320 additional rendering cores

ATI Radeon HD 4750 's Advantages

Lower TDP (100W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2 +112%

1.981 TFLOPS

Radeon HD 4750

0.934 TFLOPS

GeForce GTX 660 Rev. 2

VS

Radeon HD 4750

Graphics Card

Sep 2014

Release Date

Sep 2009

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

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

128bit

144.2GB/s

Bandwidth

51.20GB/s

Render Config

-

Compute Units

8

-

960

Shading Units

640

80

TMUs

32

24

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

128 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

11.68 GPixel/s

82.56 GTexel/s

Texture Rate

23.36 GTexel/s

-

1.981 TFLOPS

FP32 (float)

934.4 GFLOPS

82.56 GFLOPS

FP64 (double)

186.9 GFLOPS

Board Design

140W

TDP

100W

300 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GK104

GPU Name

RV740

-

GPU Variant

RV740 PRO

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

3.54 billion

Transistors

0.826 billion

294 mm²

Die Size

137 mm²

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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