EVGA GeForce RTX 3090 XC3 Ultra Gaming vs Nvidia GeForce GTX 645 OEM

VS
EVGA GeForce RTX 3090 XC3 Ultra Gaming
EVGA GeForce RTX 3090 XC3 Ultra Gaming Image
Nvidia GeForce GTX 645 OEM
Nvidia GeForce GTX 645 OEM Image
EVGA GeForce RTX 3090 XC3 Ultra Gaming
Nvidia GeForce GTX 645 OEM
Key Differences Key Differences EVGA GeForce RTX 3090 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1395MHz 823MHz
GPU Boost Clock Speed 1725MHz 888MHz
Pixel Rate 193.2 GPixel/s 9.88 GPixel/s
GPU Memory Speed 1219MHz 1000MHz
GPU Render Output Units (ROPs) 112 16
No. of Supported Displays 4 4
Performance Performance EVGA GeForce RTX 3090 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
GPU Base Clock Speed 1395MHz 823MHz
Pixel Rate 193.2 GPixel/s 9.88 GPixel/s
FLOPS (Floating-point Performance) 36.21 TFLOPS 0.95 TFLOPS
GPU Memory Speed 1219MHz 1000MHz
Texture Filter Rate 565.8 GTexels/s 39.5 GTexels/s
Total GPU Shading Units 10496 576
Total GPU TMUs 328 48
GPU Boost Clock Speed 1725MHz 888MHz
GPU Render Output Units (ROPs) 112 16
DPFP (Double Precision Floating Point) Support No No
Features Features EVGA GeForce RTX 3090 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
No. of Supported Displays 4 4
PassMark (G3D) Score Not Known 1977
PassMark (DirectCompute) Benchmark Result Not Known 943
Ray Tracing Support No No
Ports Ports EVGA GeForce RTX 3090 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 3090 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 3090 XC3 Ultra Gaming Nvidia GeForce GTX 645 OEM
Effective Memory Clock 19500MHz 4000MHz
Max Memory Bandwidth 936GB/s 64GB/s
RAM 24GB 1GB
Memory Bus Interface Width 384bit 128bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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