Quotes from xbits article comparing the two CPUs:
"...the most expensive processor in the market, the 1000-dollar six-core Core i7-990X Extreme Edition, can be titled the today’s fastest CPU only during video processing and transcoding, final rendering and a few specific tasks, such as encryption and batch image processing"
" As for the majority of general-purpose applications
, including contemporary 3D games, (the 990X Extreme Edition) yields significantly to Core i7-2600K.
"Although the (Core i7-2600K) CPU has a smaller L3 cache, (the 2600K) can boast much higher relative performance per core.
"... the maximum (overclocking) frequencies for the (Core i7-2600K) are not any lower than those of the Core i7-990X Extreme Edition
"the “Extreme Edition” part in the name of a 1000-dollar processor becomes a little ridiculous, because now it refers only to power consumption and price."http://www.xbitlabs.com/articles/cpu/di ... -990x.html