![]() However, this time these settings had plenty of headroom because we were not able to max out the video card at those settings. The highest Memory Clock we could set was 950MHz, you cannot go over this setting. The maximum Core Clock we could set was at 2150MHz, you cannot go over this setting. Similar to the Radeon RX 5700 AMD has a hard limit set on the Core Clock and Memory Clock frequencies on this reference video card. These settings are at the very fringe of what we could push. Voltage is at 1.200V, Power Limit is at +50 and Core Clock is at 2120MHz and Memory Clock at 910MHz with a forced consistent 80% fan speed. In the picture above you can see what we found as the highest stable overclock. We also noticed that raising voltage drastically raises temperatures and power. Therefore, you have to be gentle with the voltage on the Radeon RX 5700 XT, give it just enough to help, but not enough to hurt. However, pushing this above that causes the same problem as the Radeon RX 5700, it actually ends up hurting the clock speed. Because of the higher Power Limit, we could utilize a very small amount of voltage increase to 1.200V versus 1.193V to give us a slight advantage. On the Radeon RX 5700 XT we did take advantage of some slight overvoltage to obtain a very slight edge on clock speed overclocking. You can set the Power Limit to +50 on the reference Radeon RX 5700 XT video card, versus +20 on the RX 5700. However, the Power Limit can be set much higher on the Radeon RX 5700 XT. MSI Afterburner allows a maximum of 1.300V, similar to the Radeon RX 5700. In MSI Afterburner the default voltage is at “1191” which allows the default 1.193V the video card operates. Similar to the AMD Radeon RX 5700 video card, the Radeon RX 5700 XT reference video card has limitations.
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