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ASUS GT 640

  • GT640-1GD5-L
Graphics Processor
GK208
Cores
384
TMUs
32
ROPs
8
Memory Size
1024 MB
Memory Type
GDDR5
Bus Width
64 bit
Front GPU Chip

Graphics Processor

GPU Name
GK208
GPU Variant
GK208-400-A1
Architecture
Kepler 2.0
Foundry
TSMC
Process Size
28 nm
Transistors
1,020 million
Die Size
87 mm²

Graphics Card

Release Date
May 29th, 2013
Generation
GeForce 600
Predecessor
GeForce 500
Successor
GeForce 700
Production
End-of-life
Bus Interface
PCIe 2.0 x8

Clock Speeds

GPU Clock
1046 MHz
Memory Clock
1252 MHz
5 Gbps 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
512 KB

Theoretical Performance

Pixel Rate
8.368 GPixel/s
Texture Rate
33.47 GTexel/s
FP32 (float) performance
803.3 GFLOPS
FP64 (double) performance
33.47 GFLOPS (1:24)

Board Design

Slot Width
Single-slot
TDP
49 W
Suggested PSU
200 W
Outputs
1x DVI
1x HDMI 1.4a
1x VGA
Power Connectors
None
Board Number
P2131

Graphics Features

DirectX
12 (11_0)
OpenGL
4.6
OpenCL
3.0
Vulkan
1.1
CUDA
3.5
Shader Model
5.1

GK208 GPU Notes

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

Other 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
Galaxy GT 640 1046 MHz 1252 MHz 159 mm/6.3 inches
Galaxy GT 640 Black 1097 MHz 1252 MHz
GIGABYTE GT 640 1046 MHz 1252 MHz 157 mm/6.2 inches
GIGABYTE GT 640 2 GB 1046 MHz 1252 MHz 2 GB, 177 mm/7 inches
Inno3D GT 640 1046 MHz 1252 MHz
Leadtek WinFast GT 640 1064 MHz 1252 MHz
MSI GT 640 Low Profile 1046 MHz 1252 MHz 146 mm/5.7 inches
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 146 mm/5.7 inches
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
Apr 16th, 2022 04:00 EDT

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