When comparing Dell P2815Q vs ASUS PB278Q, the Slant community recommends ASUS PB278Q for most people. In the question“What are the best 27+ inch monitors?” ASUS PB278Q is ranked 4th while Dell P2815Q is ranked 7th. The most important reason people chose ASUS PB278Q is:
Headphone jack and microphone port available.
Specs
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Pros
Pro Good image quality
Vibrant, sharp & good overall color responsiveness with 1.073 billion colors and a 5ms response time.
Pro Full swivel stand
You can turn it fully to a horizontal or vertical position.
Pro Good selection of connectors
Dell P2815Q has HDMI 1.4, Thunderbolt, 2 DisplayPorts (1 in, 1 out) and 4 USB 3.0 ports. HDMI 1.4 & Thunderbolt are capable of 4K @ 30Hz.
Pro VESA mount
So you can mount it to a desk stand or a wall.
Pro Audio I/O
Headphone jack and microphone port available.
Pro QuickFit Virtual Scale
PB278Q has the ASUS exclusive QuickFit Virtual Scale that allows for previewing documents as they would appear when printed.
Pro Sharp, color rich screen
ASUS PB278Q is among the first non-Samsung monitors to use PLS. PLS (plane-to-line) is a Samsung-developed update on IPS. It has a 5ms (grey-to-grey) response time, 16.7 million colors, 1000:1 contrast ratio and is LED-backlit.
Pro DVI, DisplayPort, VGA, HDMI connections
DVI is dual-link with HDCP.
Pro Lightweight
ASUS PB278Q weighs about 8kg. Because of this it is easier to find VESA mounts.
Cons
Con Bad viewing angles
Since it's a TN monitor, it has worse viewing angles compared to IPS displays.
Con Bad refresh rate
At 3840 x 2160 it's max 30Hz and at 1920 x 1080 it's max 60Hz.
Con No USB ports
There are no USB ports.
Con Poor stand
Although the footstand is wide it's rather flimsy.