https://www.pcgamer.com/zotacs-geforce-gtx-1080-ti-mini-for-small-form-factor-pcs-is-on-sale-for-dollar650/

Building a small form-factor PC doesn't necessarily mean you have to sacrifice performance, as there are a lot of high end parts that fit into smaller cases. One of them is Zotac's GeForce GTX 1080 Ti Mini. It's physically smaller than most other GeForce GTX 1080 Ti cards, and it can be had for $649.99 today.

Newegg has Zotac's miniaturized card on sale for $699.99, but if you use promo code EMCPWRW77 at checkout, it will knock $50 off the price, making this one of the cheapest GeForce GTX 1080 Ti cards out there right now. The same card is selling for $719.99 on Amazon.