NVIDIA GeForce GTX 660 Ti vs NVIDIA GeForce GT 620

VS

NVIDIA GeForce GTX 660 Ti

NVIDIA GeForce GT 620

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Ti and 1024MB VRAM GeForce GT 620 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Ti 's Advantages

Boost Clock980MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (144.2GB/s vs 14.40GB/s)

1248 additional rendering cores

NVIDIA GeForce GT 620 's Advantages

Lower TDP (49W vs 150W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Ti +879%

2.634 TFLOPS

GeForce GT 620

0.269 TFLOPS

GeForce GTX 660 Ti

VS

GeForce GT 620

Graphics Card

Aug 2012

Release Date

May 2012

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

915 MHz

Base Clock

-

980 MHz

Boost Clock

-

1502 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

192bit

Memory Bus

64bit

144.2GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

2

1344

Shading Units

96

112

TMUs

16

24

ROPs

4

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

128 KB

-

Theoretical Performance

27.44 GPixel/s

Pixel Rate

2.800 GPixel/s

109.8 GTexel/s

Texture Rate

11.20 GTexel/s

-

2.634 TFLOPS

FP32 (float)

268.8 GFLOPS

109.8 GFLOPS

FP64 (double)

22.40 GFLOPS

Board Design

150W

TDP

49W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Processor

GK104

GPU Name

GF108

GK104-300-KD-A2

GPU Variant

GF108-100-KB-A1

Kepler

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

3.54 billion

Transistors

0.585 billion

294 mm²

Die Size

116 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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