Not sure if this is in you price range but when i was looking around i found that this board runs well with the 4970k
this board is $219 tho so it will take you a little over 500
ASUS ROG MAXIMUS VII HERO LGA 1150 Intel Z97 HDMI SATA 6Gb/s USB 3.0 ATX Intel Gaming Motherboard
Not sure if this is in you price range but when i was looking around i found that this board runs well with the 4970k
this board is $219 tho so it will take you a little over 500
ASUS ROG MAXIMUS VII HERO LGA 1150 Intel Z97 HDMI SATA 6Gb/s USB 3.0 ATX Intel Gaming Motherboard