Back in March, Intel announced a refresh for their Haswell CPUs which would improve their thermal dissipation and get a small speed bump at the same price. Most of these new CPUs were released last month, but the new overclockable models, which would benefit the most from better heat dissipation, were not among them. Yesterday, during the Computex Taiwan show, Intel announced 3 K-series models to be released this month.

The least remarkable of them is Core i5-4690K with 3.5 GHz base clock and up to 3.9 GHz turbo (0.1 GHz more than its predecessor i5-4670K). The increase also comes with slightly higher TDP (88 W, 4 W more than previous model) and motherboards with Z87 will require a BIOS update to support it. The improved thermal material should make it better for overclocking.

A very welcome new CPU for budget users is Pentium G3258 Anniversary Edition with 3.2 GHz clock and 53 W TDP. Its main attraction is unlocked multiplier, which makes in the only modern Pentium with overclocking support. Depending on the prices of motherboards with overclocking support, it may be one of the best choices for gamers with limited budget. Unfortunately, it does not have the same improvements as the new i5 and i7 parts, limiting its overclocking potential.

Finally, there is a nice surprise at the top of the line. Core i7-4790K is a CPU with 4.0 GHz base clock and 4.4 GHz turbo clock. It is much more noticeable 0.5 GHz update over last year's i7-4770K. While we have not received a nice die shrink with Broadwell yet, the minor performance improvement should be comparable to what we have seen between Sandy Bridge and Ivy Bridge. While 4 GHz is something many overclockers have been doing for a long time, having it as a base clock with only a minor raise in TDP to 88W is very welcome. This higher base clock and better thermal parameters may lead to a higher overclocking potential.