To overclock today, we used the dedicated overclocking tools within the latest version of AMD’s Catalyst Control Center. We also tested with Asus GPU Tweak, but the end results were identical.
There is plenty of headroom on the core and we achieved a maximum clock speed of 1,133mhz – 16% above the OC core clocks configured by MSI. There was also plenty of headroom on the GDDR5 memory, peaking around 1,450mhz (5.8Gbps effective).
Increasing the power limit settings above 38% didn't improve the final clock speeds.
The substantial overclock ensures that the MSI R9 290 OC Gaming Edition takes the top spot in the chart, even ahead of the Palit GTX 780 Ti Jetstream.