NVIDIA GeForce GTX 660 Rev. 2 vs ATI Radeon X1550 PCI

VS

NVIDIA GeForce GTX 660 Rev. 2

ATI Radeon X1550 PCI

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 256MB VRAM Radeon X1550 PCI 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 7 years and 8 months late

Boost Clock1032MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (144.2GB/s vs 4.256GB/s)

960 additional rendering cores

ATI Radeon X1550 PCI 's Advantages

Lower TDP (27W vs 140W)

Score

GeForce GTX 660 Rev. 2

VS

Radeon X1550 PCI

Graphics Card

Sep 2014

Release Date

Jan 2007

GeForce 600

Generation

Radeon R500 PCIe

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

266 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

192bit

Memory Bus

64bit

144.2GB/s

Bandwidth

4.256GB/s

Render Config

-

960

Shading Units

-

80

TMUs

4

24

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

1.808 GPixel/s

82.56 GTexel/s

Texture Rate

1.808 GTexel/s

-

1.981 TFLOPS

FP32 (float)

-

82.56 GFLOPS

FP64 (double)

-

Board Design

140W

TDP

27W

300 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

GK104

GPU Name

RV516

-

Kepler

Architecture

R500

TSMC

Foundry

UMC

28 nm

Process Size

80 nm

3.54 billion

Transistors

0.107 billion

294 mm²

Die Size

100 mm²

Graphics Features

12 (11_0)

DirectX

9.0c (9_3)

4.6

OpenGL

2.1

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

3.0

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