Hi I have main H81M-A and cpu i7-4790. I have confused if i playing game like real word and cpu usage 100% so H81M-A will be fine with it ? Because H81M-A only support 4 pin.
My bios version is 0909.If you don't already have the most current BIOS version for your motherboard, you MAY need to update in order for that CPU to be supported. If you do have the latest or at least version 0909 or newer, then you should be fine.
As far as the 4 pin EPS connector is concerned, an 8 pin is really only a factor when overclocking, which of course isn't realistically supported for that CPU or that motherboard anyhow. It should not have any affect on gaming.