Ali Husain :
Hi, I was wondering that if you want to buy a cheap graphic card, that requires a 6 pin, but barely outdoes the 75 watt limitation (85-100 watts) if you can just force your PCI lane to deliver more wattage through BIOS editing or flashing. My motherboard is slightly old, but more or less quite reliable (GA H61M S1).
Can you? As in, is it possible? Yes - at least I know how to with NVidia cards. You would need to flash a custom VBIOS, and then you would need to install NVidia Inspector and enable the setting to ignore the PCI-E power spec. I had a 750Ti that I bumped up to 85 watts that way. I wouldn't recommend doing that, however - I only did that because the card had NO 6-pin or 8-pin connector.
You are much better off configuring the card to pull more than 75 watts from the 6-pin. As long as you have a good PSU, you can get away with it. I've had my 980Ti's pulling 100W from the 6-pin and 175W from the 8-pin for months.