NVIDIA GeForce GTX 660 OEM vs ATI Radeon HD 3450 X2

VS

NVIDIA GeForce GTX 660 OEM

ATI Radeon HD 3450 X2

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 512MB VRAM Radeon HD 3450 X2 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 4 years and 8 months late

Boost Clock888MHz

More VRAM (1536GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 8.000GB/s)

1112 additional rendering cores

ATI Radeon HD 3450 X2 's Advantages

Lower TDP (50W vs 130W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM +4162%

2.046 TFLOPS

Radeon HD 3450 X2

0.048 TFLOPS

GeForce GTX 660 OEM

VS

Radeon HD 3450 X2

Graphics Card

Aug 2012

Release Date

Dec 2007

GeForce 600

Generation

Radeon R600

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

500 MHz

Memory

1536MB

Memory Size

512MB

GDDR5

Memory Type

DDR2

192bit

Memory Bus

64bit

134.4GB/s

Bandwidth

8.000GB/s

Render Config

-

Compute Units

2

-

1152

Shading Units

40

96

TMUs

4

24

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

64 KB

-

Theoretical Performance

21.31 GPixel/s

Pixel Rate

2.400 GPixel/s

85.25 GTexel/s

Texture Rate

2.400 GTexel/s

-

2.046 TFLOPS

FP32 (float)

48.00 GFLOPS

85.25 GFLOPS

FP64 (double)

-

Board Design

130W

TDP

50W

300 W

Suggested PSU

250 W

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

Outputs

2x DMS-59

1x 6-pin

Power Connectors

None

Graphics Processor

GK104

GPU Name

RV620

GK104-200-KD-A2

GPU Variant

RV620 LE

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

3.54 billion

Transistors

0.181 billion

294 mm²

Die Size

67 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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