NVIDIA GeForce GT 645 Full Specs

Summary

288 Shaders 776MHz

1GB GDDR591.9GB/s

Peak·FP32·FP16 894 GFLOPS

Form Factor PCIe Card

TDP 140W

Highlights

Peak OPS

Peak OPS FP32 FP64 Memory Bandwidth

GeForce GT 645894 GFLOPSFP32

x1

Top Score3.35 PFLOPS FP4 Tensor SparseDesktop1xGeForce RTX 5090

x3749.74

Theoretical Performance

Clock Speed776MHz UC·Boost·OC

Peak OPS 894 GFLOPSFP32

FP32 894 GFLOPS

FP64 74.5 GFLOPS

Pixel Rate 37.3 GPixel/s

Texture Rate 74.5 GTexel/s

Core Config

Shaders 288 Shaders

TMUs 48 TMUs

ROPs 24 ROPs

SMs 6 SMs

Clocks

Boost Clock 776MHz

Shader Clock 1.55GHz

Cache

L1 64KB/SM

L2 Cache 512KB shared

Memory

1GB GDDR5

Memory Bus 192-bit

Memory Speed 3.8GT/s

Memory Bandwidth 91.9GB/s

ECC No

Power & Thermals

TDP 140W

Video Output

Max Resolution 2560x1600

Refresh Rate Calculator 2560x1440 Resolution1440p QHD Refresh Rate 66Hz

Multi-Monitor 2

DSC Not Supported

Ports

1x Mini HDMI 1.3 2x DVI-I Dual-Link

API Support

Shader Model 5.1

DirectX DirectX 12 Direct3D 11_0

OpenGL 4.6 OpenCL 1.1

CUDA 2.1 PureVideo HD VP4 VDPAU Feature Set C

Decoder

Decoder VP4

Card

Form Factor PCIe Card

PCIe PCIe 2.0 x16 2-Slots

Height 111mm (4.37") Width 210mm (8.27") Depth 38mm (1.5")

Cooling Open-Air 1x Fan

Multi-GPU Multi-GPU Support Supported Multi-GPU Type 3-way SLI

Chip

Manufacturer NVIDIA

Chip Designer NVIDIA

Architecture Fermi

Family GeForce 600

Branding

Codename NVCE

Market Segment Desktop

Release Date Apr 24, 2012

Fabrication

Foundry TSMC

Fabrication Node 40nm

Die Size 332mm²

Transistor Count 1.9B

Transistor Density 5.87 MTr/mm²

Images