Sapphire Radeon HD 7790 1GB - Overclocking

Although Sapphire has already applied its own overclocks to the Radeon HD 7790 1GB GPU, we naturally wanted to see just how much it could really do. We used AMD's own OverDrive software for the task, and eventually settled on a core frequency of 1,200Mhz. This is the maximum that the software permits, and represents an overclock of a whopping 20 percent from stock speeds. Sadly, we couldn't push the memory to any meaningful frequency above Sapphire's 1.6GHz (6.4GHz effective) without the card becoming unstable. This is still an overclock of just under 7 percent from stock settings, however. With the overclock applied, we re-ran the Battlefield 3 and Crysis 3 1080p tests as well as the Unigine benchmark.




Read our performance analysis on the next page.