Leadtek WinFast GTX 660

Graphics Processor

GK106

Cores

960

TMUs

ROPs

Memory Size

2 GB

Memory Type

GDDR5

Bus Width

192 bit

Graphics Processor

GPU Name: GK106

GPU Variant: GK106-400-A1

Architecture: Kepler

Foundry: TSMC

Process Size: 28 nm

Transistors: 2,540 million

Die Size: 221 mm²

Graphics Card

Release Date: ~~Sep 6th, 2012~~
Oct 15th, 2012

Generation: GeForce 600

Predecessor: GeForce 500

Successor: GeForce 700

Production: End-of-life

Bus Interface: PCIe 3.0 x16

Clock Speeds

Base Clock: 980 MHz

Boost Clock: 1032 MHz

Memory Clock: 1502 MHz
6 Gbps effective

Memory

Memory Size: 2 GB

Memory Type: GDDR5

Memory Bus: 192 bit

Bandwidth: 144.2 GB/s

Render Config

Shading Units: 960

TMUs: 80

ROPs: 24

SMX Count: 5

L1 Cache: 16 KB (per SMX)

L2 Cache: 384 KB

Theoretical Performance

Pixel Rate: 20.64 GPixel/s

Texture Rate: 82.56 GTexel/s

FP32 (float) performance: 1.981 TFLOPS

FP64 (double) performance: 82.56 GFLOPS (1:24)

Board Design

Slot Width: Dual-slot

TDP: 140 W

Suggested PSU: 300 W

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

Power Connectors: 1x 6-pin

Board Number: P2030

Graphics Features

DirectX: 12 (11_0)

OpenGL: 4.6

OpenCL: 3.0

Vulkan: 1.1

CUDA: 3.0

Shader Model: 5.1

Card Notes

2GB: 1536+512
Bandwidth: 96.1+48.1
Bus Width: 128+64

GK106 GPU Notes

L1 Cache is configurable from 16 KB up to 48 KB per SMX

Other retail boards based on this design (55)

Name	GPU Clock	Boost Clock	Memory Clock	Other Changes
ASUS GTX 660 DirectCU II	980 MHz	1033 MHz	1502 MHz	216 mm/8.5 inches
ASUS GTX 660 DirectCU II	980 MHz	1033 MHz	1502 MHz	259 mm/10.2 inches
ASUS GTX 660 DirectCU II OC	1020 MHz	1085 MHz	1502 MHz	216 mm/8.5 inches
ASUS GTX 660 DirectCU II OC	1020 MHz	1084 MHz	1502 MHz	259 mm/10.2 inches
ASUS GTX 660 DirectCU II TOP	1072 MHz	1137 MHz	1527 MHz	259 mm/10.2 inches
ASUS GTX 660 DirectCU II TOP OC	1098 MHz	1150 MHz	1600 MHz	259 mm/10.2 inches
Club 3D GTX 660	980 MHz	1032 MHz	1502 MHz	242 mm/9.5 inches
Club 3D GTX 660 royalQueen	980 MHz	1032 MHz	1502 MHz	213 mm/8.4 inches
Colorful iGame GTX 660 Glorious Mission	980 MHz	1032 MHz	1502 MHz	254 mm/10 inches, 2x DVI 1x HDMI
Colorful iGame GTX 660 White Shark	1058 MHz	1124 MHz	1502 MHz	270 mm/10.6 inches
ELSA GTX 660 S.A.C	980 MHz	1032 MHz	1502 MHz	206 mm/8.1 inches
ELSA GTX 660 S.A.C ArcheAge	980 MHz	1032 MHz	1502 MHz	206 mm/8.1 inches
EMTEK XENON GTX 660 MAXX	1006 MHz	1072 MHz	1527 MHz	190 mm/7.5 inches
EVGA GTX 660	993 MHz	1058 MHz	1502 MHz
EVGA GTX 660 3 GB	980 MHz	1032 MHz	1502 MHz	3 GB
EVGA GTX 660 Exclusive Superclocked	1058 MHz	1124 MHz	1502 MHz
EVGA GTX 660 FTW	1072 MHz	1137 MHz	1502 MHz
EVGA GTX 660 FTW 3 GB	1072 MHz	1137 MHz	1502 MHz	3 GB
EVGA GTX 660 FTW Signature 2	1072 MHz	1137 MHz	1502 MHz
EVGA GTX 660 FTW Signature 2 3GB	1072 MHz	1137 MHz	1502 MHz	3 GB
EVGA GTX 660 SC Signature 2	1046 MHz	1110 MHz	1502 MHz
EVGA GTX 660 SC Signature 2 3GB	1046 MHz	1110 MHz	1502 MHz	3 GB
EVGA GTX 660 Superclocked	1046 MHz	1110 MHz	1502 MHz
EVGA GTX 660 Superclocked+	1046 MHz	1110 MHz	1502 MHz	3 GB
Gainward GTX 660	980 MHz	1032 MHz	1502 MHz	180 mm/7.1 inches
Gainward GTX 660 GS	1006 MHz	1072 MHz	1527 MHz	180 mm/7.1 inches
Gainward GTX 660 GS Dual Fan	1006 MHz	1072 MHz	1527 MHz	180 mm/7.1 inches
Galaxy GTX 660	980 MHz	1032 MHz	1502 MHz
Galaxy GTX 660 GC	1006 MHz	1072 MHz	1502 MHz	230 mm/9.1 inches
GIGABYTE GTX 660 WindForce 2X	980 MHz	1046 MHz	1502 MHz	256 mm/10.1 inches
GIGABYTE GTX 660 WindForce 2X 3 GB	980 MHz	1032 MHz	1502 MHz	3 GB, 202 mm/8 inches
GIGABYTE GTX 660 WindForce 2X OC	1032 MHz	1098 MHz	1502 MHz	256 mm/10.1 inches
GIGABYTE GTX 660 WindForce 2X OC 3 GB	1032 MHz	1098 MHz	1502 MHz	3 GB, 202 mm/8 inches
GIGABYTE GTX 660 WindForce 2X Rev. 1.1	980 MHz	1032 MHz	1502 MHz	258 mm/10.2 inches
GIGABYTE GTX 660 WindForce 2X Rev. 2	980 MHz	1046 MHz	1502 MHz	256 mm/10.1 inches
Inno3D GTX 660	980 MHz	1032 MHz	1502 MHz
Inno3D iChill GTX 660 HerculeZ 2000s	1059 MHz	1124 MHz	1502 MHz
KFA2 GTX 660 EX OC	1006 MHz	1072 MHz	1502 MHz	230 mm/9.1 inches
Leadtek WinFast GTX 660	980 MHz	1032 MHz	1502 MHz
Leadtek WinFast GTX 660 Hurricane II	980 MHz	1032 MHz	1502 MHz	194 mm/7.6 inches
MSI GTX 660	980 MHz	1032 MHz	1502 MHz	220 mm/8.7 inches
MSI GTX 660 Gaming	1006 MHz	1072 MHz	1502 MHz	260 mm/10.2 inches
MSI GTX 660 Gaming OC	1033 MHz	1098 MHz	1502 MHz	260 mm/10.2 inches
MSI GTX 660 Hawk	1084 MHz	1150 MHz	1502 MHz	265 mm/10.4 inches
MSI GTX 660 OC	1006 MHz	1072 MHz	1502 MHz	220 mm/8.7 inches
MSI GTX 660 Twin Frozr III	980 MHz	1032 MHz	1502 MHz	235 mm/9.3 inches
MSI GTX 660 Twin Frozr III OC	1032 MHz	1098 MHz	1502 MHz	235 mm/9.3 inches
Palit GTX 660 OC	1006 MHz	1072 MHz	1527 MHz	173 mm/6.8 inches
PNY XLR8 GTX 660 Performance Edition	980 MHz	1032 MHz	1502 MHz
SPARKLE Calibre GTX 660 OC	1058 MHz	1124 MHz	1502 MHz	2x DVI 2x HDMI
SPARKLE GTX 660 Dual Fan OC	1006 MHz	1072 MHz	1502 MHz	2x DVI 1x HDMI 1x VGA
ZOTAC GTX 660	993 MHz	1058 MHz	1502 MHz	191 mm/7.5 inches
ZOTAC GTX 660 AMP! Edition	1046 MHz	1110 MHz	1652 MHz	191 mm/7.5 inches
ZOTAC GTX 660 Destroyer DTC	1020 MHz	1084 MHz	1552 MHz
ZOTAC GTX 660 Thunderbolt	980 MHz	1032 MHz	1502 MHz