To begin, they make it much harder to recommend LGA 1366-based Core i7s. We know the i7-900-series is supposed to be higher-end, and it’s hard to ignore the fact that next year we’ll see hexa-core Gulftowns that drop right into our X58 motherboards. But seriously. Motherboards priced under $100? Core i5s under $200? We’re talking a possible contender next time we tackle an Intel-based $650 System Builder Marathon story (AMD fans rejoice—this month we’ll be doing an all-AMD series for you guys). That’s $10 less expensive than a Core 2 Quad Q9550 and $45 less than a Phenom II X4 965.....
What about the two LGA 1156-based Core i7s? We tested the Core i7-870 and are fairly convinced that, like the Core i7-950, it sits in a no-man’s land. Nearly two times the price of Core i7-860 and only marginally better-looking on a spec sheet, the Core i7-870 becomes Lynnfield’s version of an Extreme Edition processor—without the unlocked multiplier.
More attractive for the folks who stand to benefit from Hyper-Threading is Core i7-860. Its price tag puts it in the realm of Core i7-920, its Turbo Boost helps make it faster, and a complementary motherboard is going to cost you between $75 and $50 less....
Of course, this launch isn’t all bad news for the AMD enthusiasts out there. When the Phenom II X4 965 BE debuted in August, I hinted that you should wait until today before taking a leap. Now you see why. With i5-750 selling at $199, AMD has no choice but to compress its price list. At the very least, it’ll likely slash the prices on its high-end Phenom IIs. If you held off, great deals are quite likely in your future
http://www.tomshardware.com/reviews/intel-core-i5,2410-14.html