Overclockers UK is selling pre-binned versions of the Intel 9th Gen Coffee Lake chips with a guaranteed overclocking capacity of 4.9 to 5.2GHz for about £400 to more than £1,000. These include the Core i5-9600K, i7-9700K as well as the top-end i9-9900K. These CPUs have been binned and tested by 8Pack (Ian Parry), one of the most popular overclockers on the planet, and considering the prices these are definitely collectibles.
The mid-range i5-9600K (pre-binned 4.9GHz) starts at 400 pounds, almost twice the retail price, while the 5 and 5.1GHz pre-binned variants cost an extra 25 and 35 pounds, respectively. The eight-core i9-9700K is priced at 600 British Pounds for the 5GHz version, while chips tested for 5.1 and 5.2GHz are going for £650 and £675, respectively.
Finally, the octa-core i9-9900K is being sold for £815 for the 4.9GHz part and an extra 30 and a rather ridiculous 200 pounds for the chips capable of 5 and 5.1GHz. These processors have all been de-lidded, and the default TIM (Thermal Interface Material) has been replaced.
For each processor, you get four variants- de-lid only, pre-binned, and then the more expensive pro and ultra editions. You can see the differences between them in the table above. Cheers!