Does your motherboard feature on board graphics or are you completely dark here? If you have on board graphics capabilities, you may be able to go that route to lower your GPU clock.
If you do not have that feature, I'm at a loss
Thanks for the reply.
Yes, I have i5 3550 which has integrated graphics, and Gigabyte: GA-H77M-D3H, which has a VGA and DVI port as well.. Can anything be done ?