Samsung 2493HM Monitor

Generally, if it doesn't explicitly say HDCP, then chances are it does not have it. I couldn't find HDCP anywhere in the specs, even from Samsung's website. If HDCP is important to you, then look somewhere else.

The 7800GT is no longer powerful enough to play the latest and greatest games at 1920 x 1200.

7800GT < 7900GTX < 9600GT < 8800GT < 8800GTS (G92) 512MB <8800GTX < 9800GTX < 8800 ULTRA

People generally consider the 8800GT to be the minimum card for 1920 x 1200 gaming.

It also depends the on game too. Even 9800GTX SLI will struggle with Crysis.

Because of the LCD panel technology.

The Samsung 2493HM uses an inexpensive LCD panel (6-bit TN) that is easy on the wallet, but can be harsh on your eyes. These panels do not produce real 16.7million colors because of the limitation of the technology itself. It relies on dithering (a form of guess-timating) to make 16.7m colors out of 256k colors the monitor can really produce. TN panels also suffers from narrower viewing angles. In some cases merely turning your head slightly your eyes can pick up color shifts on the screen itself. The poor color reproduction can also create image artifacts on the screen.

The Samsung 245T uses the more expensive 8-bit S-PVA panel tech which can really produce 16.7m colors. Other than being more expensive than a comparable TN panel, the response time is a little slower (fastest is "rated" at 5ms) therefore your chances of seeing ghosting effects is greater. But that differs from person to person depending on how your brain processes the information your eyes transmit to it. Definitely has wider viewing angles and better color accuracy.

Not sure about current generation of TN panel, but previous generation of TN panel had a hard time displaying underwater scenes without any image artifacts.