NVIDIA GeForce GTX 660 OEM vs ATI Radeon HD 4580

VS

NVIDIA GeForce GTX 660 OEM

ATI Radeon HD 4580

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 512MB VRAM Radeon HD 4580 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Released 9 months late

Boost Clock888MHz

More VRAM (1536GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 22.18GB/s)

1032 additional rendering cores

ATI Radeon HD 4580 's Advantages

Lower TDP (65W vs 130W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM +971%

2.046 TFLOPS

Radeon HD 4580

0.191 TFLOPS

GeForce GTX 660 OEM

VS

Radeon HD 4580

Graphics Card

Aug 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

823 MHz

Base Clock

-

888 MHz

Boost Clock

-

1400 MHz

Memory Clock

693 MHz

Memory

1536MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

128bit

134.4GB/s

Bandwidth

22.18GB/s

Render Config

-

Compute Units

3

-

1152

Shading Units

120

96

TMUs

8

24

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

128 KB

-

Theoretical Performance

21.31 GPixel/s

Pixel Rate

3.184 GPixel/s

85.25 GTexel/s

Texture Rate

6.368 GTexel/s

-

2.046 TFLOPS

FP32 (float)

191.0 GFLOPS

85.25 GFLOPS

FP64 (double)

-

Board Design

130W

TDP

65W

300 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

GK104

GPU Name

RV635

GK104-200-KD-A2

GPU Variant

RV635 PRO (215-0682008)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

3.54 billion

Transistors

0.378 billion

294 mm²

Die Size

135 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.1

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