Report an Error

NVIDIA GeForce GT 640 Rev. 2

Graphics Processor
GK208
Cores
384
TMUs
32
ROPs
8
Memory Size
1024 MB
Memory Type
GDDR5
Bus Width
64 bit
The GeForce GT 640 Rev. 2 was an entry-level graphics card by NVIDIA, launched in May 2013. Built on the 28 nm process, and based on the GK208 graphics processor, in its GK208-400-A1 variant, the card supports DirectX 12.0. The GK208 graphics processor is a relatively small chip with a die area of only 87 mm². It features 384 shading units, 32 texture mapping units and 8 ROPs. NVIDIA has placed 1,024 MB GDDR5 memory on the card, which are connected using a 64-bit memory interface. The GPU is operating at a frequency of 1046 MHz, memory is running at 1252 MHz.
Being a single-slot card, the NVIDIA GeForce GT 640 Rev. 2 does not require any additional power connector, its power draw is rated at 49 W maximum. Display outputs include: 1x DVI, 1x HDMI, 1x VGA. GeForce GT 640 Rev. 2 is connected to the rest of the system using a PCI-Express 2.0 x8 interface. The card measures 145 mm in length, and features a single-slot cooling solution. Its price at launch was 89 US Dollars.

Graphics Processor

GPU Name
GK208
GPU Variant
GK208-400-A1
Architecture
Kepler 2.0
Foundry
TSMC
Process Size
28 nm
Transistors
unknown
Die Size
87 mm²

Graphics Card

Release Date
May 29th, 2013
Generation
GeForce 600
Production
End-of-life
Launch Price
89 USD
Bus Interface
PCIe 2.0 x8

Relative Performance

100%
GeForce 210
129%
GeForce 9400 GT
158%
Radeon HD 4550
202%
Radeon HD 5450
238%
Radeon HD 6450
251%
GeForce GT 520
310%
GeForce GT 220
405%
GeForce GT 430
410%
Radeon HD 5570
446%
Radeon HD 4670
470%
GeForce GT 440
480%
GeForce GT 240
551%
GeForce 9600 GT
586%
Radeon HD 5670
628%
GeForce GT 640
650%
GeForce 9800 GT
676%
Radeon HD 6670
697%
Radeon HD 4830
744%
Radeon HD 4770
785%
Radeon HD 4850
802%
GeForce GTS 250
826%
GeForce GTS 450
855%
Radeon HD 5750
976%
Radeon HD 7750
984%
Radeon HD 5770
1002%
GeForce GTX 260
1014%
Radeon HD 4870
1016%
Radeon Vega 8
1027%
GeForce GTX 550 Ti
1036%
GeForce GTX 650
1096%
Radeon HD 5830
1153%
Radeon HD 6790
1172%
Radeon HD 4890
1215%
GeForce GTX 460
1224%
Radeon RX Vega 11
1236%
GeForce GT 1030
1248%
GeForce GTX 275
1252%
Radeon HD 7770 GHz Edition
1254%
GeForce GTX 280
1279%
GeForce GTX 465
1340%
Radeon HD 6850
1366%
GeForce GTX 285
1465%
Radeon HD 5850
1492%
GeForce GTX 650 Ti
1492%
Radeon HD 7790
1555%
Radeon RX 550
1559%
GeForce GTX 470
1615%
Radeon HD 6870
1723%
Radeon HD 5870
1778%
GeForce GTX 560 Ti
1787%
Radeon HD 4870 X2
1820%
GeForce GTX 750 Ti
1829%
Radeon HD 6950
1893%
GeForce GTX 295
1915%
GeForce GTX 650 Ti Boost
1929%
Radeon HD 7850
1962%
GeForce GTX 480
2054%
Radeon HD 6970
2094%
Radeon R7 265
2127%
Radeon R7 370
2128%
Radeon RX 560
2135%
GeForce GTX 660
2141%
GeForce GTX 570
2312%
GeForce GTX 950
2333%
Radeon HD 7870 GHz Edition
2389%
Radeon R9 270X
2418%
GeForce GTX 660 Ti
2429%
GeForce GTX 580
2448%
GeForce GTX 1050
2454%
Radeon HD 7950
2497%
Radeon RX 460
2502%
Radeon HD 5970
2572%
GeForce GTX 760
2769%
GeForce GTX 670
2841%
GeForce GTX 960
2914%
Radeon R9 380
2931%
Radeon R9 285
2960%
Radeon HD 7970
2991%
GeForce GTX 680
3061%
GeForce GTX 1050 Ti
3141%
GeForce GTX 770
3214%
Radeon HD 6990
3290%
Radeon R9 280X
3337%
GeForce GTX 590
3339%
Radeon HD 7970 GHz Edition
3699%
GeForce GTX 780
4071%
Radeon RX 470
4127%
Radeon R9 290
4403%
Radeon R9 390
4427%
Radeon R9 290X
4486%
GeForce GTX 970
4545%
GeForce GTX TITAN
4584%
Radeon RX 570
4606%
GeForce GTX 780 Ti
4672%
Radeon R9 390X
4692%
Radeon HD 7990
4715%
Radeon RX 480
4755%
GeForce GTX 690
5010%
Radeon RX 580
5114%
GeForce GTX 980
5180%
GeForce GTX 1060 6 GB
5180%
Radeon R9 FURY
5206%
Radeon RX 590
5698%
Radeon R9 295X2
5796%
Radeon R9 FURY X
5894%
GeForce GTX 980 Ti
6336%
GeForce GTX TITAN X
6647%
GeForce GTX 1660 Ti
6680%
GeForce GTX 1070
6975%
Radeon RX Vega 56
7564%
GeForce GTX 1070 Ti
7761%
Radeon RX Vega 64
7761%
GeForce RTX 2060
7957%
GeForce GTX 1080
9136%
Radeon VII
9136%
GeForce RTX 2070
9578%
TITAN X Pascal
9824%
GeForce GTX 1080 Ti
10609%
GeForce RTX 2080
12279%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080

Clock Speeds

GPU Clock
1046 MHz
Memory Clock
1252 MHz
5008 MHz effective

Memory

Memory Size
1024 MB
Memory Type
GDDR5
Memory Bus
64 bit
Bandwidth
40.06 GB/s

Render Config

Shading Units
384
TMUs
32
ROPs
8
SMX Count
2
L1 Cache
16 KB (per SMX)
L2 Cache
128 KB

Theoretical Performance

Pixel Rate
8.368 GPixel/s
Texture Rate
33.47 GTexel/s
FP32 (float) performance
803.3 GFLOPS
FP64 (double) performance
267.8 GFLOPS (1:3)

Board Design

Slot Width
Single-slot
Length
5.7 inches
145 mm
TDP
49 W
Outputs
1x DVI
1x HDMI
1x VGA
Power Connectors
None
Board Number
P2131

Graphics Features

DirectX
12.0 (11_0)
OpenGL
4.6
OpenCL
1.2
Vulkan
1.1.103
CUDA
3.5
Shader Model
5.1

Retail boards based on this design (16)

Name GPU Clock Memory Clock Other Changes
ASUS GT 640 1046 MHz 1252 MHz
ASUS GT 640 Formula II 1046 MHz 1252 MHz
Gainward GT 640 1046 MHz 1252 MHz 5.71 inches/145 mm
Galaxy GT 640 1046 MHz 1252 MHz 6.25 inches/159 mm
Galaxy GT 640 Black 1097 MHz 1252 MHz
GIGABYTE GT 640 1046 MHz 1252 MHz 6.18 inches/157 mm
GIGABYTE GT 640 2 GB 1046 MHz 1252 MHz 2 GB, 6.97 inches/177 mm
Inno3D GT 640 1046 MHz 1252 MHz
Leadtek WinFast GT 640 1064 MHz 1252 MHz
MSI GT 640 Low Profile 1046 MHz 1252 MHz 5.75 inches/146 mm
Palit GT 640 1 GB 1046 MHz 1252 MHz
Palit GT 640 2 GB 1046 MHz 1252 MHz 2 GB, 1x DVI 1x mini-HDMI 1x VGA
XENON GT 640 LP 1046 MHz 1252 MHz 5.75 inches/146 mm
ZOTAC GT 640 1 GB 1046 MHz 1252 MHz
ZOTAC GT 640 2 GB 1046 MHz 1252 MHz 2 GB
ZOTAC GT 640 Guild Wars 1046 MHz 1252 MHz Dual-slot