Thoughts:
1) What does the weird noise sound like?
2) Update your post to include full system hardware specs and OS.
3) Try to narrow down the physical source/location of the sound. I would not expect that two different GPUs would present the same results. However, that may be moot if you used the same make and model GPU.
What GPUs are you using: original and different?
It sounds like something electrical.
My specs are:
MOBO: Asus ROG Crosshair VII Hero
NVMe: SSD M.2 2280 Samsung 970 Evo Plus 250GB MLC V-NAND NVMe (OS)
SSD: SSD 2.5" Samsung 860 QVO 1TB MLC V-NAND SATA (GAMES)
OS: Windows 10 Pro
CPU: Ryzen 2700x;
Cooler: Enermax Liqfusion 360 mm
GPU: Evga GeForce RTX 2070 XC Ultra
PSU: Evga SuperNova 850 G3, 80 Plus Gold 850W
The sound comes from graphic card pcie.
Orignal Model: EVGA RTX 2070 XC ULTRA
The other one: 1080TI From gigabye