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NVIDIA GeForce GT 640

Graphics Processor
GK107
Cores
384
TMUs
32
ROPs
16
Memory Size
2 GB
Memory Type
DDR3
Bus Width
128 bit
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
Foundry
TSMC
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%
GeForce 210
20%
GeForce 9400 GT
25%
Radeon HD 4550
32%
Radeon HD 5450
38%
Radeon HD 6450
40%
GeForce GT 520
49%
GeForce GT 220
64%
GeForce GT 430
65%
Radeon HD 5570
71%
Radeon HD 4670
75%
GeForce GT 440
76%
GeForce GT 240
88%
GeForce 9600 GT
93%
Radeon HD 5670
100%
GeForce GT 640
103%
GeForce 9800 GT
108%
Radeon HD 6670
111%
Radeon HD 4830
118%
Radeon HD 4770
125%
Radeon HD 4850
128%
GeForce GTS 250
131%
GeForce GTS 450
136%
Radeon HD 5750
155%
Radeon HD 7750
157%
Radeon HD 5770
159%
GeForce GTX 260
161%
Radeon HD 4870
162%
Radeon Vega 8
163%
GeForce GTX 550 Ti
165%
GeForce GTX 650
174%
Radeon HD 5830
183%
Radeon HD 6790
186%
Radeon HD 4890
193%
GeForce GTX 460
195%
Radeon RX Vega 11
197%
GeForce GT 1030
199%
GeForce GTX 275
199%
Radeon HD 7770 GHz Edition
200%
GeForce GTX 280
203%
GeForce GTX 465
213%
Radeon HD 6850
217%
GeForce GTX 285
233%
Radeon HD 5850
238%
GeForce GTX 650 Ti
238%
Radeon HD 7790
248%
Radeon RX 550
248%
GeForce GTX 470
257%
Radeon HD 6870
274%
Radeon HD 5870
283%
GeForce GTX 560 Ti
284%
Radeon HD 4870 X2
290%
GeForce GTX 750 Ti
291%
Radeon HD 6950
301%
GeForce GTX 295
305%
GeForce GTX 650 Ti Boost
307%
Radeon HD 7850
312%
GeForce GTX 480
327%
Radeon HD 6970
333%
Radeon R7 265
339%
Radeon RX 460
339%
Radeon R7 370
340%
GeForce GTX 660
341%
GeForce GTX 570
347%
Radeon RX 560
368%
GeForce GTX 950
371%
Radeon HD 7870 GHz Edition
380%
Radeon R9 270X
385%
GeForce GTX 660 Ti
387%
GeForce GTX 580
390%
GeForce GTX 1050
391%
Radeon HD 7950
398%
Radeon HD 5970
409%
GeForce GTX 760
441%
GeForce GTX 670
452%
GeForce GTX 960
464%
Radeon R9 380
466%
Radeon R9 285
471%
Radeon HD 7970
476%
GeForce GTX 680
487%
GeForce GTX 1050 Ti
500%
GeForce GTX 770
512%
Radeon HD 6990
524%
Radeon R9 280X
531%
GeForce GTX 590
531%
Radeon HD 7970 GHz Edition
589%
GeForce GTX 780
610%
GeForce GTX 1650
648%
Radeon RX 470
657%
Radeon R9 290
692%
Radeon RX 570
701%
Radeon R9 390
705%
Radeon R9 290X
714%
GeForce GTX 970
723%
GeForce GTX TITAN
733%
GeForce GTX 780 Ti
744%
Radeon R9 390X
747%
Radeon HD 7990
750%
Radeon RX 480
757%
GeForce GTX 690
797%
Radeon RX 580
814%
GeForce GTX 980
824%
Radeon R9 FURY
824%
GeForce GTX 1060 6 GB
861%
Radeon RX 590
907%
Radeon R9 295X2
912%
GeForce GTX 1660
922%
Radeon R9 FURY X
938%
GeForce GTX 980 Ti
963%
GeForce GTX TITAN X
1047%
GeForce GTX 1660 Ti
1047%
GeForce GTX 1070
1114%
Radeon RX Vega 56
1182%
GeForce GTX 1070 Ti
1216%
Radeon RX Vega 64
1233%
GeForce GTX 1080
1233%
GeForce RTX 2060
1283%
Radeon RX 5700
1385%
GeForce RTX 2060 SUPER
1435%
GeForce RTX 2070
1469%
Radeon RX 5700 XT
1486%
Radeon VII
1524%
TITAN X Pascal
1570%
GeForce GTX 1080 Ti
1587%
GeForce RTX 2070 SUPER
1689%
GeForce RTX 2080
1790%
GeForce RTX 2080 SUPER
1976%
GeForce RTX 2080 Ti
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
2 GB
Memory Type
DDR3
Memory Bus
128 bit
Bandwidth
28.51 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) 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
Suggested PSU
350 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
1.1.103
CUDA
3.0
Shader Model
5.1

GK107 GPU Notes

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

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 4 GB, 6.7 inches/170 mm, Dual-slot, 2x DVI 1x mini-HDMI
EVGA GT 640 4 GB 902 MHz 667 MHz 4 GB, 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 4 GB, 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