Now that [H]ard|OCP has had more time to spend with the new R9 390X they have managed to find the overclocks that they are most comfortable running on the card they used to test.  They used MSI Afterburner 4.1.1 and first overclocked the card without changing voltages at all, which netted them 1150MHz core and 6.6GHz effective on the RAM.  From there they started to raise to Core Voltage, eventually settling on +50 as settings higher than that resulted in lower maximum observed voltages due to the TDP being reached and the card throttling back.  With that voltage setting they could get the card to run at 1180MHz, with the memory speed remaining at 6.6GHz as it is not effected by the core voltage settings, with the fan speed set 80% they saw a consistent 67C GPU temperature.  How much impact did that have on performance and could it push the card's performance beyond an overclocked GTX 980?  Read the full review to find out in detail.

"We take the new MSI Radeon R9 390X GAMING 8G video card and overclock it to it fullest and compare it with an overclocked GeForce GTX 980 at 1440p and 4K in today's latest games. Find out how much overclocking the R9 390X improves performance, and which video card is best performing. Can R9 390X overclock better than R9 290X?"

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