looking for an upgrade for my i5 4460 found this i5 4690k seems cheap and the seller has good feedback however it's ebay so it could be anything http://www.ebay.co.uk/itm/BRAND-NEW-Intel-Core-i5-4690K-Processor-3-5-GHz-LGA1150-3RD-PC-CPU-4690-K-4-/162601882931?hash=item25dbd3d533:g😱RwAAOSwvc1ZaVPo thoughts?