Leadtek WinFast GT 640 ATX 1 GB

Graphics Processor

GK107

Cores

384

TMUs

ROPs

Memory Size

1024 MB

Memory Type

DDR3

Bus Width

128 bit

GPU

Graphics Processor

GPU Name: GK107

GPU Variant: GK107-300-A2

Architecture: Kepler

Foundry: TSMC

Process Size: 28 nm

Transistors: 1,270 million

Density: 10.8M / mm²

Die Size: 118 mm²

Chip Package: BGA-908

Graphics Card

Release Date: Jun 5th, 2012

Generation: GeForce 600

Predecessor: GeForce 500

Successor: GeForce 700

Production: End-of-life

Bus Interface: PCIe 3.0 x16

Clock Speeds

GPU Clock: 902 MHz

Memory Clock: ~~891 MHz~~
900 MHz (+1%)
~~1782 Mbps effective~~
1800 Mbps effective

Memory

Memory Size: ~~2 GB~~
1024 MB

Memory Type: DDR3

Memory Bus: 128 bit

Bandwidth: ~~28.51 GB/s~~
28.80 GB/s

Render Config

Shading Units: 384

TMUs: 32

ROPs: 16

SMX Count: 2

L1 Cache: 16 KB (per SMX)

L2 Cache: 256 KB

Theoretical Performance

Pixel Rate: 7.216 GPixel/s

Texture Rate: 28.86 GTexel/s

FP32 (float): 692.7 GFLOPS

FP64 (double): 28.86 GFLOPS (1:24)

Board Design

Slot Width: ~~Single-slot~~
Dual-slot

TDP: 65 W

Suggested PSU: 250 W

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

Power Connectors: None

Board Number: P2011 SKU 0

Graphics Features

DirectX: 12 (11_0)

OpenGL: 4.6

OpenCL: 3.0

Vulkan: 1.2.175

CUDA: 3.0

Shader Model: 6.5 (5.1)

GK107 GPU Notes

NVENC: 1st Gen
NVDEC: 1st Gen
PureVideo HD: VP5
VDPAU: Feature Set D

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

Other retail boards based on this design (37)

Name	GPU Clock	Memory Clock	Other Changes
AFOX GT 640 V1	902 MHz	891 MHz	1x DVI 1x HDMI 1x VGA
AFOX GT 640 V2	902 MHz	891 MHz	1x DVI 1x HDMI 1x VGA
AFOX GT 640 V3	902 MHz	875 MHz	1x DVI 1x HDMI 1x VGA
AFOX GT 640 V4	902 MHz	800 MHz	1x DVI 1x HDMI 1x VGA
ASUS GT 640 Formula II	902 MHz	891 MHz	210 mm/8.3 inches, 2x DVI 1x HDMI 1x VGA
ASUS GT 640 Low Profile 1 GB	902 MHz	901 MHz	1024 MB, 171 mm/6.7 inches, 1x DVI 1x HDMI 1x VGA
BIOSTAR GT 640 1 GB	902 MHz	891 MHz	1024 MB, Dual-slot, 1x DVI 1x HDMI 1x VGA
BIOSTAR GT 640 2 GB	902 MHz	891 MHz	Dual-slot, 1x DVI 1x HDMI 1x VGA
Colorful GT 640 PRO X4	902 MHz	891 MHz	168 mm/6.6 inches, 2x DVI
EVGA GT 640	902 MHz	901 MHz	170 mm/6.7 inches, Dual-slot, 2x DVI 1x mini-HDMI
EVGA GT 640	902 MHz	901 MHz	170 mm/6.7 inches, 2x DVI 1x mini-HDMI
EVGA GT 640 4 GB	902 MHz	901 MHz	4 GB, 170 mm/6.7 inches, Dual-slot, 2x DVI 1x mini-HDMI
EVGA GT 640 4 GB	902 MHz	667 MHz	4 GB, 170 mm/6.7 inches, 2x DVI 1x mini-HDMI
EVGA GT 640 Superclocked	928 MHz	915 MHz	170 mm/6.7 inches, Dual-slot, 2x DVI 1x mini-HDMI
Gainward GT 640 1 GB	902 MHz	891 MHz	1024 MB, 150 mm/5.9 inches, Dual-slot, 1x DVI 1x HDMI 1x VGA
Gainward GT 640 2 GB	902 MHz	891 MHz	150 mm/5.9 inches, Dual-slot, 1x DVI 1x HDMI 1x VGA
Galaxy GT 640 GC	950 MHz	891 MHz	Dual-slot, 1x DVI 1x HDMI 1x VGA
GIGABYTE GT 640 OC	1046 MHz	900 MHz	190 mm/7.5 inches, Dual-slot, 2x DVI 1x HDMI 1x VGA
GIGABYTE GT 640 OC Rev. 2	941 MHz	900 MHz	190 mm/7.5 inches, Dual-slot, 2x DVI 1x HDMI 1x VGA
Inno3D GT 640 Raptor 1 GB	902 MHz	900 MHz	1024 MB, 1x DVI 1x HDMI 1x VGA
Inno3D GT 640 Raptor 2 GB	902 MHz	900 MHz	Dual-slot, 1x DVI 1x HDMI 1x VGA
Leadtek WinFast GT 640 ATX 1 GB	902 MHz	900 MHz	1024 MB, Dual-slot, 1x DVI 1x HDMI 1x DisplayPort 1x VGA
Leadtek WinFast GT 640 ATX 2 GB	902 MHz	800 MHz	Dual-slot, 1x DVI 1x HDMI 1x DisplayPort 1x VGA
Leadtek WinFast GT 640 Low Profile 1 GB	902 MHz	900 MHz	1024 MB, 1x DVI 1x HDMI 1x VGA
Leadtek WinFast GT 640 Low Profile 2 GB	902 MHz	800 MHz	1x DVI 1x HDMI 1x VGA
MSI GT 640 4 GB	902 MHz	891 MHz	4 GB, 154 mm/6.1 inches, Dual-slot, 1x DVI 1x HDMI 1x VGA
MSI GT 640 OC 1 GB	941 MHz	667 MHz	1024 MB, 171 mm/6.7 inches, Dual-slot, 1x DVI 1x HDMI 1x VGA
MSI GT 640 OC 2 GB	941 MHz	891 MHz	171 mm/6.7 inches, Dual-slot, 1x DVI 1x HDMI 1x VGA
MSI GT 640 V1	902 MHz	810 MHz	154 mm/6.1 inches, Dual-slot, 1x DVI 1x HDMI 1x VGA
Point of View GT 640	902 MHz	800 MHz	1x DVI 1x HDMI 1x VGA
SPARKLE GT 640 Low Profile OC	928 MHz	891 MHz	152 mm/6 inches, 1x DVI 1x HDMI 1x VGA
SPARKLE GT 640 Low Profile OC	928 MHz	891 MHz	152 mm/6 inches, 1x DVI 1x HDMI 1x VGA
SPARKLE GT 640 OC 1 GB	954 MHz	891 MHz	1024 MB, 170 mm/6.7 inches, Dual-slot, 3x DVI 1x mini-HDMI
SPARKLE GT 640 OC Dragon Cyclone	954 MHz	891 MHz	Dual-slot, 3x DVI 1x mini-HDMI
XFX Double D GT 640	902 MHz	891 MHz	157 mm/6.2 inches, 1x DVI 1x HDMI 1x VGA
ZOTAC GT 640	902 MHz	891 MHz	Dual-slot, 2x DVI 1x mini-HDMI
ZOTAC GT 640 ZONE Edition	902 MHz	800 MHz	GDDR3, Dual-slot, 2x DVI 1x mini-HDMI