Author Topic: Acer XF240H Review & Viewsonic XG2402 Review: 144hz 1080p Matte TN Panels with AMD-Free-Sync  (Read 7947 times)


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« on: August 10, 2018, 01:47:42 am »
Ghosting/Overdrive Performance

DSC_0050 by Deepinthesky Teslastorm, on Flickr

The Acer XF240H's pixel response times are controlled by the OD (overdrive) setting in the Settings Menu while the Viewsonic XG2402's are controlled by the Rampage Response setting in the Gaming Settings>Custom 1, 2 and 3 (I renamed 1 to 144 for 144hz settings and 60 for 60hz)>Rampage Response sub menu.  The photo comparisons are non-pursuit photos of the Test UFO Ghosting test made by Blur Busters creator Mark Rejhon.

Acer XF240H Test UFO Ghost Test
Spoiler (hover to show)

Test UFO Ghosting Test

Viewsonic XG2402 Test UFO Ghost Test
Spoiler (hover to show)

Test UFO Ghosting Test

The Acer's default overdrive setting named OD: Normal setting is the best while the Viewsonic needs to have the Rampage Response setting increased from Fast to Ultra Fast in the Gaming Settings>CUSTOM 1-3>Rampage Response sub-menu.  The higher OD Extreme (XF240H) and Fastest (XG2402) overdrive settings make both monitors suffer from obvious overshoot ghosting (bright, colored and dark transparent glow on certain moving color and shade transitions), and should not be used.  Both monitors offer very similar pixel response times, but the Acer suffers from slightly less overshoot than the Viewsonic, though the differences are extremely minimal, and both monitors offer excellent overdrive for nearly color streaking and overshoot ghosting free gaming experiences at both 60 (important for console gaming) and 144hz. 

The Acer XF240H and Viewsonic XG2402 offer balanced overdrive which I can not find faults with, nor can think of a 144hz display with superior performance, though it is still important to keep in mind that LCD sample and hold motion blur is unavoidable without back-light strobing, a feature which neither monitor has, as well as has draw backs such as cross-talk ghosting and brightness reduction.   

The Acer XB321HK has top tier overdrive performance for a 60hz AHVA/IPS/PLS panel, as does the BenQ Zowie RL2460 in the 60hz TN panel performance category.  The XB321HK is completely free from overshoot, but the secondary ghosting trail is a bit more pronounced due to the AHVA panels slower pixel response times.  The BenQ RL2460's ghosting and overshoot trails captured by my camera are also slightly more pronounced than the other TN panels, but they can still be considered excellent, especially since the perceptual differences between all of these monitors is extremely minimal when gaming.

Also remember that this top tier TN panel overdrive performance comes at a significant loss in image quality since TN panels colors are uneven from top to bottom (vertical gamma shift; TN panels bottom halves are washed out while the top quarter is too dark), and have very restrictive viewing angles.  144hz monitors with slower pixel response times and less balanced overdrive (overshoot ghosting) like the VA panel using Samsung C24FG73 (video review by Lims Cave) offer more even, accurate and vibrant color and shade performance, as well as far less limiting viewing angles.
« Last Edit: October 16, 2018, 06:33:56 pm by NCX »