- Misleading PCIexpress slot/specification
The motherboard may feature a misleading PCI Express slot/specification. In some instances, an x16 slot may only support x4 speeds. In other cases, the slot may have just a single lane connected to it, significantly limiting its functionality. Be cautious of these discrepancies to ensure compatibility with your PCI Express devices.
- Bumpgate
These cards are likely to suffer a premature failure due to the defective 90nm process node from TSMC used back in the day, where the die underfill used was inappropriate for the chip design.
On Nvidia GPUs it mainly affects all 90/80/65 and some 55 nm GPUs (the A revisons of G9x and GT200 chips).
You can see a very detailed explanation of this issue by RIP Felix on YouTube
PCIe x16 slot is only x1 electrically.
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