Nvidia GeForce RTX 2080 Founders Edition vs Nvidia GeForce GTX 645 OEM

VS
Nvidia GeForce RTX 2080 Founders Edition
Nvidia GeForce RTX 2080 Founders Edition Image
Nvidia GeForce GTX 645 OEM
Nvidia GeForce GTX 645 OEM Image
Nvidia GeForce RTX 2080 Founders Edition
Nvidia GeForce GTX 645 OEM
Key Differences Key Differences Nvidia GeForce RTX 2080 Founders Edition Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1515MHz 823MHz
GPU Boost Clock Speed 1800MHz 888MHz
Pixel Rate 115.2 GPixel/s 9.88 GPixel/s
GPU Memory Speed 1750MHz 1000MHz
GPU Render Output Units (ROPs) 64 16
No. of Supported Displays 4 4
Performance Performance Nvidia GeForce RTX 2080 Founders Edition Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1515MHz 823MHz
Pixel Rate 115.2 GPixel/s 9.88 GPixel/s
FLOPS (Floating-point Performance) 10.6 TFLOPS 0.95 TFLOPS
Texture Filter Rate 331.2 GTexels/s 39.5 GTexels/s
GPU Memory Speed 1750MHz 1000MHz
Total GPU Shading Units 2944 576
Total GPU TMUs 184 48
GPU Boost Clock Speed 1800MHz 888MHz
GPU Render Output Units (ROPs) 64 16
DPFP (Double Precision Floating Point) Support Yes No
Features Features Nvidia GeForce RTX 2080 Founders Edition Nvidia GeForce GTX 645 OEM
DirectX Version Info 12.1 11
OpenGL Driver Version 4.6 4.3
OpenCL Driver Version 1.2 1.1
Multi-display Tech Support Yes Yes
GPU Temperature Under Load 77°C Not Known
3D Support Yes Yes
Noise Level Under Load 47.9dB Not Known
Multi-GPU Support Count 3 Not Known
No. of Supported Displays 4 4
PassMark (G3D) Score Not Known 1977
PassMark (DirectCompute) Benchmark Result Not Known 943
Ray Tracing Support No No
Miscellaneous Miscellaneous Nvidia GeForce RTX 2080 Founders Edition Nvidia GeForce GTX 645 OEM
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports Nvidia GeForce RTX 2080 Founders Edition Nvidia GeForce GTX 645 OEM
HDMI Output Support Yes Yes
GPU HDMI Version 2 Not Known
DisplayPort Output 3 1
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 2
Mini DisplayPort Output 0 0
General info General info Nvidia GeForce RTX 2080 Founders Edition Nvidia GeForce GTX 645 OEM
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 13600 million 2540 million
Semiconductor Size 12nm 28nm
PCI Express Version 3 3
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 266.7mm 145mm
Height 115.7mm 111mm
Memory Memory Nvidia GeForce RTX 2080 Founders Edition Nvidia GeForce GTX 645 OEM
Effective Memory Clock 14000MHz 4000MHz
Max Memory Bandwidth 448GB/s 64GB/s
RAM 8GB 1GB
Memory Bus Interface Width 256bit 128bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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