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Extreme: Intel Core i7-3970X Extreme Edition - six-core, 3.5GHz
This is the king of CPUs.
The Core i7 processors represents a new era in architecture for Intel, and the 3970X the next stage in desktop processors based on the Sandy Bridge-E architecture -- the next stage in evolution of the six-core CPU.
This is a 3.5GHz part that can be Turbo Boosted up to a whopping 4.0GHz. It has six cores, which when combined with Hyper-Threading makes a whopping 12 threads available. Add to this 15MB L3 cache, triple-channel DDR3-1066 memory interface, 150W TDP.
The ideal choice for hardcore gamers, video editors, and show-offs!
Image source: Intel.
Extreme: ASUS Rampage IV Extreme
An extreme CPU needs an extreme motherboard, and they don't come much more extreme than the ASUS Rampage IV Extreme.
This board supports the Socket 2011 found on the Intel Core i7-3970X and offers support for up to 64GB RAM via 8 DIMM slots, and comes with a total of support for 12 separate USB 2.0 ports, eight USB 3.0 ports, and eight 6Gb/s SATA ports.
The OC Key allows system information to be overlayed on the screen, showing you real-time information when you want need.
Image source: ASUS.
Mainstream: AMD A10-5800K - quad-core, 3.8GHz
The AMD A10-5800K APU is the flagship of Trinity series, and features quad-core CPU with up to 3.8GHz/4.2GHz Turbo clock, and an AMD Radeon HD 7660D GPU to provide best-in-class performance and 3D gaming.
The A10-5800K is also fully unlocked, making it overclocker-friendly.
A super CPU for anyone thinking of building a mainstream PC.
Image source: AMD.