motherboard for a intel core i7-980

Solution
Any LGA1366 Motherboard is compatible with it.
PCPartPicker part list: https://pcpartpicker.com/list/P8K8TW
Price breakdown by merchant: https://pcpartpicker.com/list/P8K8TW/by_merchant/

Motherboard: Asus - P6X58-E PRO ATX LGA1366 Motherboard ($252.00 @ Amazon)
Total: $252.00
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-31 01:44 EST-0500

Bob125484

Honorable
Jun 13, 2015
712
17
11,365


Not sure how much you will pay for it. Socket 1366 is obsolete so mobo will be expensive and hard to find. If you want 6 cores with 12 threads, consider i7 8700K ($380) which needs Z370 mobo and DDR4 memory.