NVIDIA GeForce GT 640 GDDR5 Full Specs

Summary

384 Shaders 950MHz

1GB GDDR580GB/s

Peak·FP32·FP16 729.6 GFLOPS

Form Factor PCIe Card

TDP 75W

Theoretical Performance

Clock Speed950MHz UC·Boost·OC

Peak OPS 729.6 GFLOPSFP32

FP32 729.6 GFLOPS

FP64 30.4 GFLOPS

Pixel Rate 15.2 GPixel/s

Texture Rate 30.4 GTexel/s

Core Config

Shaders 384 Shaders

TMUs 32 TMUs

ROPs 16 ROPs

SMs 2 SMs

Clocks

Boost Clock 950MHz

Cache

L1 48KB/SM Tex

L2 Cache 256KB shared

Memory

1GB GDDR5

Memory Bus 128-bit

Memory Speed 5GT/s

Memory Bandwidth 80GB/s

ECC No

Power & Thermals

TDP 75W

Video Output

Max Resolution 4096x2304

Refresh Rate Calculator 3840x2160 Resolution4K UHD Refresh Rate 34Hz

Multi-Monitor 2

Adaptive Sync G-Sync FreeSync

DSC Not Supported

Ports

1x HDMI 1.4 1x DVI-I Dual-Link 1x VGA

API Support

Shader Model 6.5

DirectX DirectX 12 Direct3D 11_0

OpenGL 4.6 OpenCL 3 Vulkan 1.2

CUDA 3 PureVideo HD VP5 VDPAU Feature Set D

Encoder

Encoder NVENC 1

Codec AVC (H.264)

Decoder

Decoder NVDEC 1

Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264)

Card

Form Factor PCIe Card

PCIe PCIe 3.0 x16 1.5-Slots

Height 111mm (4.37") Width 145mm (5.71") Depth 30mm (1.18")

Cooling Open-Air 1x Fan

Chip

Manufacturer NVIDIA

Chip Designer NVIDIA

Architecture Kepler

Family GeForce 600

Branding

Codename NVE7

Market Segment Desktop

Release Date Apr 24, 2012

Fabrication

Foundry TSMC

Fabrication Node 28nm

Die Size 118mm²

Transistor Count 1.3B

Transistor Density 10.76 MTr/mm²

Images