NVIDIA GeForce GTX 660 vs NVIDIA GeForce GT 620 OEM

VS

NVIDIA GeForce GTX 660

NVIDIA GeForce GT 620 OEM

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 512MB VRAM GeForce GT 620 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Boost Clock1032MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (144.2GB/s vs 14.37GB/s)

912 additional rendering cores

NVIDIA GeForce GT 620 OEM 's Advantages

Lower TDP (30W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 +1169%

1.981 TFLOPS

GeForce GT 620 OEM

0.156 TFLOPS

GeForce GTX 660

VS

GeForce GT 620 OEM

Graphics Card

Sep 2012

Release Date

Apr 2012

GeForce 600

Generation

GeForce 600

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

898 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

192bit

Memory Bus

64bit

144.2GB/s

Bandwidth

14.37GB/s

Render Config

-

SM Count

1

960

Shading Units

48

80

TMUs

8

24

ROPs

4

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

128 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

1.620 GPixel/s

82.56 GTexel/s

Texture Rate

6.480 GTexel/s

-

1.981 TFLOPS

FP32 (float)

155.5 GFLOPS

82.56 GFLOPS

FP64 (double)

12.96 GFLOPS

Board Design

140W

TDP

30W

300 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

GK106

GPU Name

GF119

GK106-400-A1

GPU Variant

-

Kepler

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

0.292 billion

221 mm²

Die Size

79 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

2.1

5.1

Shader Model

5.1

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