This monitor is 16x9 (1920x1080), just like a 1080p LCD TV would be. Most widescreen computer monitors 24 inches and up are 1920x1200. So you're losing 120 horiz lines of resolution, which will affect certain viewing/gaming modes.
Specs are wrong on BestBuy's site - Dell lists it as 1920x1200 resolution. Key differences are 1000:1 contrast vs 1300:1 for the ultrasharp also, the ultrasharp will allow you to adjust the height where this will only allow you to adjust the angle. Third, the ultrasharp has a built in USB-hub and 9-in-1 card reader. Last, the Ultrasharp retails for $689 vs $419 for this one (Dell has it for $329 on sale through Small-Business site)
The real key difference between this and the ultrasharp is in the type of LCD panel used. The ultrasharp has a wider color gamut and doesn't have the extreme color and contrast shifts when the viewing angle changes.
The E248WFP is a TN panel and the ultrasharp uses a SPVA panel .. TN Panels are cheaper so a lot of manufacturers are using this technology. A lot of people hate TN panels due to their poor color reproduction and poor viewing angles. But the way I see it, around 80% of the panels you see at a B&M are TN. So next time you're in a B&M, look for a cheap LCD monitor and check out the picture quality... if you are satisfied with it, then go for the E248WFP... but a lot of videophiles or photophiles prefer SIPS or SPVA...
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