BenQ - PD3225U vs Samsung - ViewFinity S9 (S90PC)

The PD3225U edges ahead on the Mars Score (63.6 vs 59.3), but the 4.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the PD3225U 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 screen size.

Pick the ViewFinity S9 (S90PC) 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 peak brightness, dci-p3 coverage.

Both ship with comparable refresh rate, response time (gtg), panel type, 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.