"Visibly Smart" was the tagline with which Intel brought its 2nd Generation Core processor family codenamed "Sandy Bridge" into the market. What every Sandy Bridge chip in the LGA1155 package launched thus far has in common is its integrated graphics controller. Apparently, Intel is planning to launch three new Core i5 quad-core processors, which lack that integrated graphics. The processors very much will work on H61, H67, and Z68 chipset-based motherboards, only you can't use the integrated graphics, making them functionally-identical to first-generation LGA1156 Core i5 quad-core chips.
The Core i5-2550K, which has been talked about for the past few weeks, is one of these three models that will lack iGPU. This chip is geared for overclocking, as it features an unlocked base clock multiplier. The other two models are the Core i5-2450P, and Core i5-2380P. Intel is perhaps counting on the "P" marker to intuitively denote lack of iGPU, like with P67 chipset. Clocked at 3.10 GHz with a Turbo Boost speed of 3.40 GHz, the Core i5-2380P is clocked identically to the Core i5-2400, except of course it lacks the iGPU. The Core i5-2450P, on the other hand is a little unique, with a clock speed of 3.20 GHz and 3.50 GHz Turbo Boost speed. Pricing and availability are not known, though it is expected that some of these chips will be priced lower than existing models with iGPU.