Overall we see a 10% increase in performance for a 13% increase in power consumption. Performance isn't as good as a stock 3770K in this well threaded test simply because the 3470 lacks Hyper Threading support: Power consumption doesn't go up by all that much because we aren't scaling the voltage up significantly to get to these higher frequencies. Performance and power consumption at the overclocked frequency are both reasonable: It's really an effortless overclock, but you have to be ok with the knowledge that your chip could likely go even faster were it not for the artificial multiplier limitation.
In practice I had no issues running at the max overclock, even without touching the voltage settings on my testbed's Intel DZ77GA-70K board: The table below summarizes what you can get out of a 3470:
It isn't fully unlocked, meaning the max overclock is only 4-bins above the max turbo frequencies. The 3470 does support Intel's vPro, SIPP, VT-x, VT-d, AES-NI and Intel TXT so you're getting a fairly full-featured SKU with this part. The two are technically priced the same so I can see this happening. It's possible that 22nm yields are doing better than expected and the 3470 will simply quickly take the place of the 3450. We're often hard on AMD for introducing SKUs separated by only 100MHz and a handful of dollars, so it's worth pointing out that Intel is doing the exact same here. The 3470 is near identical, but runs 100MHz faster. At the Ivy Bridge launch we were told about a Core i5-3450, a quad-core CPU clocked at 3.1GHz with Intel's HD 2500 graphics. Intel also introduced a new part into the Ivy Bridge lineup while we weren't looking: the Core i5-3470. I don't agree, but this is the hand we've been dealt. Combine the two and you can see how some folks at Intel might feel it's better to behave a bit more guarded. It's also true that at the highest levels there's a bit of paranoia about the threat ARM poses to Intel in the long run. Why the change? Various sects within Intel management have different feelings on how much or how little information should be shared. One dual-core desktop part gets announced today as well, but the bulk of the dual-core lineup won't surface until later this year. Furthermore, Intel only revealed the die size and transistor count of a single configuration: a quad-core with GT2 graphics.Ĭompare this to the Sandy Bridge launch a year prior where Intel sampled four different CPUs and gave us a detailed breakdown of die size and transistor counts for quad-core, dual-core and GT1/GT2 configurations. Dual-core mobile parts are announced today, as are their ultra-low-voltage counterparts for use in Ultrabooks. Intel unveiled many of the quad-core desktop and mobile parts last month, but only sampled a single chip to reviewers. Intel's first 22nm CPU, codenamed Ivy Bridge, is off to an odd start.