GPU Wiki

Compare GPUs

Pick up to four GPUs and compare their specs row by row. Specs that mean different things across generations are kept apart.

Popular comparisons

Add a third or fourth GPU
Spec GeForce GTX 645 OEM
Overview
Product name NVIDIA GeForce GTX 645 OEM
Architecture Kepler
Generation / family GeForce 600 Series
GPU codename GK106S
Launch date 2013-04-22
Market segment Desktop, OEM in GeForce 600 Series
Board type / entry type Reference GPU
GPU
Process node TSMC 28 nm
Die size 221 mm²
Transistor count 2.54 billion
GPU chip GK106S
SM / multiprocessor count 0
CUDA Cores 576
ROPs 16
TMUs 48
Clocks
Base / Core clock 824 MHz
Boost clock 824 MHz
Memory clock 1,000 MHz
Memory
Memory size 1 GB
Memory type GDDR5
Memory bus width 128-bit
Memory bandwidth 64 GB/s
Bus / Interface
Bus interface PCIe 3.0 x16
AGP / PCI / PCIe distinction PCIe
Power
TDP / TBP / board power 65 W
Recommended PSU 250 W
Power connectors None
Slot width Single-slot, 147 mm length
Display / Media
Display outputs 1x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
Features
DirectX support DirectX 11.0
OpenGL support OpenGL 4.6
Vulkan support Vulkan 1.2
CUDA support 3.0
Shader Model 5.1
Performance / Benchmarks
FP32 throughput 0.95 TFLOPS
Muted cells indicate unavailable, not applicable, or not directly comparable specifications.

DLAA counts as native resolution; DLSS, FSR and XeSS upscaling never do. A ray tracing setting without a readable on or off value is read as on.