I had a nvidia TNT2 32 mb, it has a fan on it, but the fan broke, i looked for another fan but no success, so i bought a new card, a Radeon 7000 32 mb, but it dosent have a fan, should i put one on because i felt the cooler and it was kind of hot, or since this one dosent have a fan should i just use the old one with out one and get my money back?