NVIDIA GeForce GTX 645 Full Specs

Summary

576 Shaders 889MHz

1GB GDDR564GB/s

Peak·FP32·FP16 1.02 TFLOPS

Form Factor PCIe Card

TDP 64W

Theoretical Performance

Clock Speed889MHz UC·Base·Boost·OC

Peak OPS 1.02 TFLOPSFP32

FP32 1.02 TFLOPS

FP64 42.67 GFLOPS

Pixel Rate 14.2 GPixel/s

Texture Rate 42.7 GTexel/s

Core Config

Shaders 576 Shaders

TMUs 48 TMUs

ROPs 16 ROPs

SMs 3 SMs

Clocks

Base Clock 824MHz

Boost Clock 889MHz

Cache

L1 48KB/SM Tex

L2 Cache 512KB shared

Memory

1GB GDDR5

Memory Bus 128-bit

Memory Speed 4GT/s

Memory Bandwidth 64GB/s

ECC No

Power & Thermals

TDP 64W

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 DisplayPort 1.2 1x HDMI 1.4 1x DVI-I Dual-Link

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-Slots

Height 111mm (4.37") Width 168mm (6.61") Depth 20mm (0.79")

Cooling Blower 1x Fan

Chip

Manufacturer NVIDIA

Chip Designer NVIDIA

Architecture Kepler

Family GeForce 600

Branding

Codename NVE6

Market Segment Desktop

Release Date Apr 22, 2013

Fabrication

Foundry TSMC

Fabrication Node 28nm

Die Size 221mm²

Transistor Count 2.5B

Transistor Density 11.49 MTr/mm²

Images