The 7700k delidded - $2000 *GONE*
https://www.amazon.com/Intel-Desktop-Processor-i7-7700K-BX80677I77700K/dp/B01MXSI216/ref=sr_1_1?s=pc&ie=UTF8&qid=1500577060&sr=1-1&keywords=7700kWas purchased a month and a half ago and ran into overheating problems. Stock 4.5ghz speeds and voltages, idle temps were mid 50s and load temps were mid 80s Cooler was a h220x2. Told amazon about it and they shipped me another and told me to return it... the replacement took much longer to arrive than expected and the return time for the overheating one expired so they said i couldn't return the faulty one for a refund. So I delidded it for fun and now it runs at idle (40-43) 3c lower than the new replacement and under load runs (70*-78) 5-10c lower than the replacement. It even overclocked to 5ghz and peaked at 82c after 15 minutes of prime95 which cooks these cpus. (the reason I'm selling the delidded one is because the new replacement still has warranty on it) NOTE The IHS is not glued so you may choose to replace the thermal compound with one of your choice.
The 4790k delidded - $1500 (Actually dont know how much to sell this for so make an offer somewhere close to that and I'll see whats up*)
https://www.amazon.com/Intel-i7-4790K-Processor-Cache-BX80646I74790K/dp/B00KPRWAX8/ref=sr_1_1?ie=UTF8&qid=1500575379&sr=8-1&keywords=4790kWas purchased at the end of 2016 only to have the board die like 3 months ago (note just to be sure for my peace of mind and yours the potential buyer should bring the system they wish to place the cpu in so it can be tested.) NOTE The IHS is not glued so you may choose to replace the thermal compound with one of your choice.