GAINWARD RADEON HD 5670 Gainward Radeon HD 5670 review also featuring Gigabyte Radeon HD 4770. Stand by for the toughest battle the 5670 has experienced so far against the powerful Gigabyte Radeon HD 4770. Gainward Radeon HD 5670 has 15% higher clock speed, 20% higher memory speed and Directx 11 Support. Gainward Radeon HD 5670 does have a disadvantage and this is only having 400 Shader Processors which is 240 Less than Gigabyte Radeon HD 4770. Software used was Farcry 2 and Resident Evil 5."