Intel pulls wraps off Skylake-S desktop processors at Gamescom 2015

Intel’s desktop Broadwell CPUs have only just hit the shops, but already it looks as if they’re redundant: at Gamescom in Cologne, Intel has unveiled the first products of its sixth-generation Skylake range, heralding a new architecture and a significant boost to integrated graphics performance.

Intel pulls wraps off Skylake-S desktop processors at Gamescom 2015

In all, only two CPUs were revealed today, and both are aimed principally at overclockers and gamers: the unlocked 4GHz Core i7-6700K, and the 3.5GHz Core i5-6600K, both of which will go on sale immediately.

No mobile CPUs have yet been unveiled; Intel won’t get to laptops and tablets until later in the year. However, the chip giant did say it would be announcing an unlocked “K” mobile processor for “enthusiast laptops” in Q3 2015, alongside the usual line-up of low-power CPUs.

Intel’s Skylake announcement at a glance:

  • Two new desktop processors launched: the Intel Core i7-6700K and the Core i5-6600K

  • Support for up to two-channel DDR4 memory

  • Up to 10% faster than the equivalent Haswell processors

  • New Intel HD Graphics 530 offers 20-40% improvement in performance

  • Uses new LGA 1151 socket,

  • In conjunction with new Z170 chipset, supports 40% more high-speed I/O lanes than 9 Series chipset – up to ten USB 3 ports and 20 PCI Express 3 lanes


Intel Skylake: What’s new?

Since Skylake represents a “Tock” in Intel’s Tick-Tock development cycle, the new chips will be manufactured on the same 14nm process as Broadwell, but with various architectural improvements and optimisations.

Full details on the new architecture haven’t been announced yet, and won’t be fully detailed until the Intel Developer Forum later this month. Since Intel chose Gamescom for its first unveiling, however, it’s a fair bet that increased performance will be the prime focus.

In terms of raw specifications, the two new CPUs are very similar. Both are designed with easy overclocking in mind, with Intel boasting that its “full range base clock tuning granularity” will help gamers and PC building enthusiasts to hit the overclocking heights. (Note, though, that this feature is only available on the Core i7.)

Both chips use the new LGA 1151 socket, so you’ll need to budget for a new motherboard if you’re looking to buy one. There’s also compatibility with DDR4 RAM, support for up to 16 PCI Express lanes and up to ten USB 3 ports. Both processors also support Turbo Boost 2 and Hyper-Threading, while the new integrated graphics GPU – Intel HD Graphics 530 – offers a claimed 20-40% improvement over the equivalent Haswell processors.

The only differences between the two new desktop processors are in raw clock speed and Hyper-Threading support. The Intel Core i5-6600K is a quad-core CPU with no Hyper-Threading. It has a base frequency of 3.5GHz and will Turbo Boost to maximum of 3.9GHz (on a single core). The quad-core Core i7-6700K does support Hyper-Threading, runs at 4GHz and Turbo Boosts to 4.2GHz. The TDP for both CPUs is 91W.

Base frequency

Max Turbo frequency




Intel Core i7-6700K


Up to 4.2GHz




Intel Core i5-6600K


Up to 3.9GHz




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