newegg.com offers the HIS Radeon HD 4870 512MB GDDR5 256-bit PCI Express 2.0 x16 Video Card, model no. H487F512P, for $289.99 with free shipping. This $20 mail-in rebate cuts it to $269.99. That's the lowest total price we could find by $9. It supports CrossFire and features a 2560x1600 max resolution, 750MHz core clock speed, 1800MHz memory clock, dual DVI outputs with HCDP, HDMI adapter, and more. Deal ends July 31.

Of note, CompUSA also offers this card for $269.99 after a $20 mail-in rebate, plus $8.99 for shipping. Pay via PayPal for $20 off, further cutting it to $249.99, not including the cost of shipping. The PayPal discount will be credited to your account within six to eight weeks after purchase.