All graphics cards have been tested with core and memory clock speeds set to the AMD and Nvidia specifications.
Test System Specs
Intel Core i7-4770K (3.50GHz) x2 4GB Crucial DDR3-2400 (CAS 11-13-13-28) Asrock Z97 Extreme6 (Intel Z97) OCZ ZX Series (1250W) Samsung SSD 850 Pro 512GB (SATA 6Gb/s) Gigabyte Radeon HD 290X (4096MB) Gigabyte Radeon HD 290 (4096MB) Crossfire Gigabyte Radeon HD 290 (4096MB) Gigabyte Radeon HD 280X (2048MB) Crossfire Gigabyte Radeon HD 280X (2048MB) HIS Radeon HD 280X (3072MB) Gigabyte GeForce GTX 980 (4096MB) Gigabyte GeForce GTX 970 (4096MB) SLI Gigabyte GeForce GTX 970 (4096MB) Gigabyte GeForce GTX 960 (2048MB) Gigabyte GeForce GTX 960 (2048MB) SLI Gigabyte GeForce GTX 780 Ti (3072MB) Microsoft Windows 8.1 Pro 64-bit Nvidia GeForce 347.25 AMD Catalyst 14.12 Omega