Newegg has the HIS Radeon 4870 1GB GDDR5 PCI-E Video Card for $155 - $15 rebate (Exp 03/31) = $140 with Free Shipping. While the new 5xxx cards are already out, these are now cheap enough to justify a CrossFire setup.
Newegg has the PowerColor Radeon 5570 1GB PCI-E Video Card $82.99 - $10 off with coupon code EMCYNNP39 (Exp 03/01) = $72.99 with Free Shipping. Features a 650 MHz core clock, 1.8GHz memory clock, and a maximum resolution of 2560 x 1600. Perfect for your Dell 27" U2711 monitor.
eWiz.com has the Palit nVidia GeForce GT 240 1GB PCI-E Video Card for $94.99 - 15% off with coupon code FRESH15 = $80.74 with Free Shipping. Sports a 575 MHz core clock, 1GB of DDR3 onboard memory, and a max resolution of 2560 x 1600.
NewEgg has the Sapphire Vapor-X Radeon 5750 1GB GDDR5 PCI-E Video Card for $149.99 - $10 off with coupon code VGA1231 (Exp 01/07) = $139.99 with Free Shipping. Features Sapphire's Vapor-X cooling and is factory overclocked to 710Mhz.
NewEgg has the XFX Radeon HD4890 1GB DDR5 Video Card for $189.99 - $20 rebate (Exp 12/24) = $169.99 with Free Shipping. Core clock speed of 850 MHz, memory clock speed of 3.9 GHz, and HDCP capable.
NewEgg.com has the XFX Radeon HD4890 1GB DDR5 Video Card for $189.99 - $20 rebate (Exp 12/24) = $169.99 with Free Shipping. Core clock speed of 850 MHz, memory clock speed of 3.9 GHz, and HDCP capable.
eWiz.com has the Sapphire Radeon 5750 1GB Vapor X PCI-E Video Card for $149.99 - 10% off with coupon code BLACKFRIDAY (Exp 11/30) = $134.99 with Free Shipping. Get DirectX 11 support with this latest ATI budget minded video card. Features a ATI Avivo HD and Stream technology.
eWiz.com has the PowerColor Radeon 4870 1GB DDR5 PCI-E Video Card for $149.99 - $15 off with coupon code PUMPKIN15 (Exp 10/22) = $134.99 with Free Shipping. Sports a 770MHz core clock, 3.6GHz memory clock, and two DVI out connections.
eWiz.com has the Sapphire Radeon 5770 1GB DDR5 PCI-E Video Card for $159.99 - $5 off with coupon code TRICKORTREAT (Exp 10/15) = $154.99 with Free Shipping. A budget minded video card for those that want Direct X 11 support.
NewEgg has the Asus 9600GT 512MB GDDR3 PCI-E Video Card for $89.99 - $10 off with coupon code VGA9161 - $20 rebate (Exp 09/30) = $59.99 with Free Shipping. Sports a 600MHz core clock, 1800MGz memory clock, and has a maximum resolution of 2560 x 1600. Good luck running any 3D game smoothly at that resolution though.
NewEgg has the Iogear External DVI Video Card GUC2020DW6 USB 2.0 Interface for $64.99 - $3 coupon code EMCLWNW64 (Exp 09/03) = $61.99 with Free Shipping. Features cable length 4 feet and support resolution of UXGA 1600x1200 and 32-bit color.