AMD today announced the much-awaited 2nd generation Ryzen quad-core socket AM4 processors, in addition to two new E-series (energy-efficient) variants of its existing processor models. To begin with, the company announced the 4-core/8-thread Ryzen 5 2500X and the 4-core/4-thread Ryzen 3 2300X.Unlike their predecessors that are carved out of the "Summit Ridge" silicon by disabling 2 cores per compute complex or CCX (2+2 CCX config), the 2500X and 2300X feature a 4+0 config, or an entire CCX in the "Pinnacle Ridge" silicon being disabled. This also means that the 2500X has just 8 MB of L3 cache (its predecessor has 16 MB). The 2300X is clocked at 3.50 GHz with 4.00 GHz boost, while the 2500X ticks at 3.60 GHz with 4.00 GHz boost. The TDP of both chips is rated at 65W.AMD also released the "E" brand extension for its 2nd generation Ryzen series, with the new Ryzen 5 2600E, and the Ryzen 7 2700E. Both these chips sacrifice clock speeds for an impressive 45W TDP. The 2600E is clocked at 3.10 GHz, with 4.00 GHz (compared to 3.60 GHz ~ 4.20 GHz of the 2600X); while the 2700E ticks at 2.80 GHz, with 4.00 GHz boost (compared to 3.70 GHz ~ 4.30 GHz of the 2700X). The company didn't reveal pricing of the four chips.