ASUS - ROG Swift PG39WCDM vs LG - UltraGear 45GX950A-B

The UltraGear 45GX950A-B edges ahead on the Mars Score (79.8 vs 83.8), but the 4.0-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the ROG Swift PG39WCDM if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are refresh rate, dci-p3 coverage, panel type.

Pick the UltraGear 45GX950A-B if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are screen size.

Both ship with comparable response time (gtg), peak brightness, usb-c power delivery, so those specs don't separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.