npyrhone :
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4) Overclocking this is not luck of the draw. They all come at least 96Hz, and the great majority work 120Hz.
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Definitely a crapshoot though the odds may be in you favor.
Here are some excerpts from the X270OC manual:
Overclock Warranty: Overlord Computer does not warranty that your panel will reach a specific refresh rate. Overclocking does not void your panel/component warranty.
However, it is important to note that we here at Overlord cannot and do not guarantee that your monitor will hit a particular rate.
If every one of these monitors was shipped capable of 120Hz, they would ship that way and it would be a choice when setting up the monitor without tweaking the driver.
Also, throughout the manual, and this may have something to do with pushing something beyond its native refresh rate, the manual discusses that your ability to overclock the monitor's refresh rate has a lot to do with the capability of your GPU. This does not make sense (again from the manual for this monitor):
However, since the ability to overclock your monitor is so dependent on your current graphics card many people may not see much benefit in trying to hit 96hz...
Currently, non-G-Sync monitors have static refresh rates. If you buy a true 120Hz monitor, you can set it to 120Hz no matter what frame rate your video card can pump out. Refresh rate is independent of video card capabilities and is a property of the monitor itself.
For example, if I'm running Crysis 3 and my frame rate is 30fps and I'm running on a true 120Hz monitor, the monitor still refreshes at 120Hz. It doesn't clock down to match my video cards fps. The monitor still refreshes at 120Hz.
The Overlord monitor specs are decent (especially the low input lag) and the review seems favorable, but unless Overlord can state the monitor will run at a native refresh of 120Hz and warranty it as such, I wouldn't buy it.