Dell M6500 WUXGA WLED color gamut question

Hello you all. This is my first post on here so bear with me. I recently got a good deal on a Dell M6500 with a 250 GB SSD, 1 TB HDD, i7 920XM quad core processor and ATI 7820 Firepro GPU for $700.00. The model screen that it came with is a 1920 X 1200P Ultrasharp WLED WUXGA Anti-Glare screen. I know there is a 1920 X 1200P RGBLED WUXGA Anti- Glare screen equipped with some Dell M6500's that provides a higher color gamut which includes 100 % of the Adobe RGB color space. According to the reviews, the RGBLED screens are better, but I was just wondering if the 1920 X 1200P Ultrasharp WLED WUXGA screen I have covers close to 100 % of the SRGB color space since that is the standard profile most people work in for photography and video? In addition, does anybody know if the 1920 X 1200P Ultrasharp WLED WUXGA screens covers 72 % NTSC color gamut since to my understanding, 72% NTSC color gamut covers 100% of SRGB? Based on some other information I gathered, I heard the lowest end screen you can get for the Dell M6500 is the 1400 X 900P WXGA LED screen that covers 40% NTSC color gamut. Can anybody confirm this and correct me if I'm wrong about the color gamut of the these three screen types for the Dell M6500? I do have a Spyder 3 color calibrator device that I use to calibrate my monitors. The 1900 X 1200P screen is a big step up from 1400 X 900 and is a great resolution for photo editing. Also, I know TN panels don't compare to high end IPS panels but I heard that both the WUXGA anti-glare models have pretty good viewing angles for a TN panel. I really wanted to get a HP Dreamcolor 2 IPS display laptop but too expensive for me. This model is perfect since it has the i7 920XM processor which I have overclocked to a stable 3.8 GHZ with my Zalmann NC 2000 cooling pad and dual laptop heat radiators for the two air vents in the back but I just want to feel reassured that the 1920 X 1200P Ultrasharp WLED WUXGA screen covers close to 100% of the SRGB space. Any info is greatly appreciated since I can't find much on the net about the color gamut of the Ultrasharp 1920 X 1200P WLED WUXGA displays. Many thanks in advance to owners of the Dell M6500 with the same Ultrasharp WLED WUXGA screen who chime in and give their input on this.