PC Graphics Card question

[Romeo604]

Hi all

For any PC users on here, I am having trouble deciding which graphics card to buy. My options are:

1. MSI Radeon HD 7770 (Clock speed: 1000 MHZ) 1 GB Ram

or

2. MSI Geforce GTX 650 (Clock speed: 1071 MHZ) 1 GB Ram

I will be using one of these entry level cards to play SC2 on my PC with 1920x1200 monitor on High settings.

Any help would be appreciated!