2560 x 1080 res

My heading is vague but previously I have only one monitor and I was unable to test but now I have 2 so I done some test I have Alienware and other specs are in bottom Now I bought a monitor which is ultrawide and having resolution of 2560 x 1080 now I tested both ports of my laptop i.e...

2 older systems using DFI Bloodiron EO 35 and Gigabyte EP 45- both boot 10.9 (no updates) The Monitor: LG 25UM64 Ultrawide display - 2 HDMI, 1 DP -Display port, 1 DVI-D port. Monitor keeps asking for 2560 x 1080 - do it but the text is not crisp. 8800GTS, OSX Preferences display choices...