ATI Radeon X1550 vs NVIDIA GeForce GTX 660

VS

ATI Radeon X1550

NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 256MB VRAM Radeon X1550 and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon X1550 's Advantages

Lower TDP (27W vs 140W)

NVIDIA GeForce GTX 660 's Advantages

Released 5 years and 8 months late

Boost Clock1032MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (144.2GB/s vs 12.80GB/s)

960 additional rendering cores

Score

Radeon X1550

VS

GeForce GTX 660

Graphics Card

Jan 2007

Release Date

Sep 2012

Radeon R500 PCIe

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

980 MHz

-

Boost Clock

1032 MHz

400 MHz

Memory Clock

1502 MHz

Memory

256MB

Memory Size

2GB

DDR2

Memory Type

GDDR5

128bit

Memory Bus

192bit

12.80GB/s

Bandwidth

144.2GB/s

Render Config

-

Shading Units

960

4

TMUs

80

4

ROPs

24

-

L1 Cache

16 KB (per SMX)

-

L2 Cache

384 KB

-

Theoretical Performance

2.200 GPixel/s

Pixel Rate

20.64 GPixel/s

2.200 GTexel/s

Texture Rate

82.56 GTexel/s

-

FP32 (float)

1.981 TFLOPS

-

FP64 (double)

82.56 GFLOPS

Board Design

27W

TDP

140W

200 W

Suggested PSU

300 W

1x DVI 1x VGA 1x S-Video

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

RV516

GPU Name

GK106

-

GPU Variant

GK106-400-A1

R500

Architecture

Kepler

UMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.107 billion

Transistors

2.54 billion

100 mm²

Die Size

221 mm²

Graphics Features

9.0c (9_3)

DirectX

12 (11_0)

2.1

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

Shader Model

5.1

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