EVGA GeForce RTX 3080 XC3 Ultra Gaming vs Nvidia GeForce GTX 645 OEM

VS
EVGA GeForce RTX 3080 XC3 Ultra Gaming
EVGA GeForce RTX 3080 XC3 Ultra Gaming Image
Nvidia GeForce GTX 645 OEM
Nvidia GeForce GTX 645 OEM Image
EVGA GeForce RTX 3080 XC3 Ultra Gaming
Nvidia GeForce GTX 645 OEM
Key Differences Key Differences EVGA GeForce RTX 3080 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1440MHz 823MHz
GPU Boost Clock Speed 1755MHz 888MHz
Pixel Rate 168.5 GPixel/s 9.88 GPixel/s
GPU Memory Speed 1188MHz 1000MHz
GPU Render Output Units (ROPs) 96 16
No. of Supported Displays Not Known 4
Performance Performance EVGA GeForce RTX 3080 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1440MHz 823MHz
Pixel Rate 168.5 GPixel/s 9.88 GPixel/s
FLOPS (Floating-point Performance) 30.55 TFLOPS 0.95 TFLOPS
GPU Memory Speed 1188MHz 1000MHz
Texture Filter Rate 477.4 GTexels/s 39.5 GTexels/s
Total GPU Shading Units 8704 576
Total GPU TMUs 272 48
GPU Boost Clock Speed 1755MHz 888MHz
GPU Render Output Units (ROPs) 96 16
DPFP (Double Precision Floating Point) Support No No
Features Features EVGA GeForce RTX 3080 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
DirectX Version Info 12 11
OpenGL Driver Version 4.6 4.3
OpenCL Driver Version 2 1.1
Multi-display Tech Support Yes Yes
3D Support Yes Yes
Ray Tracing Support Yes No
PassMark (G3D) Score Not Known 1977
PassMark (DirectCompute) Benchmark Result Not Known 943
No. of Supported Displays Not Known 4
Ports Ports EVGA GeForce RTX 3080 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
HDMI Output Support Yes Yes
GPU HDMI Version 2.1 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 EVGA GeForce RTX 3080 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 28300 million 2540 million
Semiconductor Size 8nm 28nm
PCI Express Version 4 3
Dual-GPU Support No No
Air-water Cooling Support No No
Width Size 285.4mm 145mm
Height 111.2mm 111mm
Memory Memory EVGA GeForce RTX 3080 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
Effective Memory Clock 19000MHz 4000MHz
Max Memory Bandwidth 760GB/s 64GB/s
RAM 10GB 1GB
Memory Bus Interface Width 320bit 128bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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