The only 8 pin cable likely to be coming from the psu which isn't a graphics card power cable will be the one designed to fit in the 8 pin socket on the motherboard. I think its very odd that you can't get it to sit in normally, so look forward to the photos.
If you have an adapter in mind which takes two 4 pin molex plugs and connects to the motherboard, don't use it, as it'll be worse than the cable you're using now.
If you have an adapter in mind which takes two 4 pin molex plugs and connects to the motherboard, don't use it, as it'll be worse than the cable you're using now.
