Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
Never heard of collermaster? They sound like a shirt compnay. Are you sure that your PSU is reliable?
i have 1 6970 atm and am going to add a second what i need to know is if my psu can deal with it atm i have a coolermaster gx750 will this do
You'll have enough wattage but you're going to need to use molex to PCI-E power adapters.
2 HD 6970's will need 2x8 pin and 2x6 pin power cables and I believe your PSU only has 2x8pin.
You'll have to make up 2x6 pin using adapters.
no it has 4 x 6pin with that 2 pin adaptor on all of them so 4 x 6 or 8 pin
Yes Matthew31 is correct. The psu has enough connectors. Source can be found here