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NVIDIA GeForce GT 640

GK107
Graphics Processor
384
Cores
32
TMUs
16
ROPs
2048 MB
Memory Size
DDR3
Memory Type
128 bit
Bus Width
NVIDIA GeForce GT 640 Photo NVIDIA GK107 Photo
The GeForce GT 640 was a mid-range graphics card by NVIDIA, launched in June 2012. Built on the 28 nm process, and based on the GK107 graphics processor, in its GK107-300-A2 variant, the card supports DirectX 12.0. The GK107 graphics processor is an average sized chip with a die area of 118 mm² and 1,270 million transistors. It features 384 shading units, 32 texture mapping units and 16 ROPs. NVIDIA has placed 2,048 MB DDR3 memory on the card, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 902 MHz, memory is running at 891 MHz.
Being a single-slot card, the NVIDIA GeForce GT 640 does not require any additional power connector, its power draw is rated at 65 W maximum. Display outputs include: 1x DVI, 1x HDMI, 1x DisplayPort. GeForce GT 640 is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card measures 145 mm in length, and features a single-slot cooling solution. Its price at launch was 99 US Dollars.

Graphics Processor

GPU Name
GK107
GPU Variant
GK107-300-A2
Architecture
Kepler
Process Size
28 nm
Transistors
1,270 million
Die Size
118 mm²

Graphics Card

Release Date
Jun 5th, 2012
Generation
GeForce 600
Production
End-of-life
Launch Price
99 USD
Bus Interface
PCIe 3.0 x16

Relative Performance

16%
20%
25%
32%
38%
40%
49%
64%
65%
71%
75%
76%
88%
93%
100%
GeForce GT 640
103%
108%
111%
118%
125%
128%
131%
136%
155%
157%
159%
161%
162%
163%
165%
174%
183%
186%
193%
195%
197%
199%
199%
200%
203%
213%
217%
233%
237%
237%
248%
248%
257%
274%
283%
284%
290%
291%
301%
305%
307%
312%
327%
333%
339%
339%
340%
341%
368%
371%
380%
385%
387%
390%
391%
397%
398%
409%
441%
452%
464%
466%
471%
476%
487%
500%
511%
524%
531%
531%
589%
648%
657%
701%
705%
714%
723%
730%
733%
744%
747%
750%
757%
797%
814%
824%
824%
907%
922%
938%
1008%
1107%
1147%
1235%
1235%
1303%
1524%
1563%
1704%
1939%
Based on TPU review data: "Performance Summary" at 1920x1080

Clock Speeds

GPU Clock
902 MHz
Memory Clock
891 MHz
1782 MHz effective

Memory

Memory Size
2048 MB
Memory Type
DDR3
Memory Bus
128 bit
Bandwidth
28.51 GB/s

Render Config

Shading Units
384
TMUs
32
ROPs
16
SMX Count
2

Theoretical Performance

Pixel Rate
7.216 GPixel/s
Texture Rate
28.86 GTexel/s
FP32 (float) performance
692.7 GFLOPS
FP64 (double) performance
28.86 GFLOPS (1:24)

Board Design

Slot Width
Single-slot
Length
5.7 inches
145 mm
TDP
65 W
Outputs
1x DVI
1x HDMI
1x DisplayPort
Power Connectors
None
Board Number
P2011

Graphics Features

DirectX
12.0 (11_0)
OpenGL
4.6
OpenCL
1.2
Vulkan
1.1.82
CUDA
3.0
Shader Model
5.1

Card Notes

DPUs: 128
SFUs: 64

GK107 GPU Notes

PureVideo HD: VP5
VDPAU: Feature Set D

Retail boards based on this design (36)

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 8.27 inches/210 mm, 2x DVI 1x HDMI 1x VGA
ASUS GT 640 Low Profile 1 GB 902 MHz 901 MHz 1024 MB, 6.75 inches/171 mm, 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 6.6 inches/168 mm, 2x DVI
EVGA GT 640 902 MHz 901 MHz 6.7 inches/170 mm, Dual-slot, 2x DVI 1x mini-HDMI
EVGA GT 640 902 MHz 901 MHz 6.7 inches/170 mm, 2x DVI 1x mini-HDMI
EVGA GT 640 4 GB 902 MHz 901 MHz 4096 MB, 6.7 inches/170 mm, Dual-slot, 2x DVI 1x mini-HDMI
EVGA GT 640 4 GB 902 MHz 667 MHz 4096 MB, 6.7 inches/170 mm, 2x DVI 1x mini-HDMI
EVGA GT 640 Superclocked 928 MHz 915 MHz 6.7 inches/170 mm, Dual-slot, 2x DVI 1x mini-HDMI
Gainward GT 640 1 GB 902 MHz 891 MHz 1024 MB, 5.9 inches/150 mm, Dual-slot, 1x DVI 1x HDMI 1x VGA
Gainward GT 640 2 GB 902 MHz 891 MHz 5.9 inches/150 mm, 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 7.48 inches/190 mm, Dual-slot, 2x DVI 1x HDMI 1x VGA
GIGABYTE GT 640 OC Rev. 2 941 MHz 900 MHz 7.48 inches/190 mm, 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 4096 MB, 6.06 inches/154 mm, Dual-slot, 1x DVI 1x HDMI 1x VGA
MSI GT 640 OC 1 GB 941 MHz 667 MHz 1024 MB, 6.73 inches/171 mm, Dual-slot, 1x DVI 1x HDMI 1x VGA
MSI GT 640 OC 2 GB 941 MHz 891 MHz 6.73 inches/171 mm, Dual-slot, 1x DVI 1x HDMI 1x VGA
MSI GT 640 V1 902 MHz 810 MHz 6.06 inches/154 mm, 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 6 inches/152 mm, 1x DVI 1x HDMI 1x VGA
SPARKLE GT 640 Low Profile OC 928 MHz 891 MHz 6 inches/152 mm, 1x DVI 1x HDMI 1x VGA
SPARKLE GT 640 OC 1 GB 954 MHz 891 MHz 1024 MB, 6.7 inches/170 mm, 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 6.18 inches/157 mm, 1x DVI 1x HDMI 1x VGA
ZOTAC GT 640 ZONE Edition 902 MHz 800 MHz GDDR3, 5.69 inches/145 mm, Dual-slot, 2x DVI 1x mini-HDMI