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Haswell at IDF 2012: 10W is the New 17W
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Old 10th September 2012, 07:49   #1
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Default Haswell at IDF 2012: 10W is the New 17W

Earlier this week Intel let a little bit of information leak about Haswell, which is expected to be one of the main focal points of next week's Intel Developer Forum. Haswell is a very important architecture for Intel, as it aims lower on the TDP spectrum in order to head off any potential threat from ARM moving up the chain. Haswell still remains very separate from the Atom line of processors (it should still be tangibly faster than IVB), but as ARM has aspirations of higher performance chips Intel needed to ensure that its position at lower power points wasn't being threatened.

The main piece of news Intel supplied was the TDP target for Haswell ULV (Ultra Low Voltage) parts is now 10W, down from 17W in Sandy and Ivy Bridge. The standard voltage Haswell parts will drop in TDP as well, but it's not clear by how much. Intel originally announced that Haswell would be focused on the 15 - 25W range, so it's entirely possible that standard voltage parts will fall in that range with desktop Haswell going much higher.

Intel also claims that future Haswell revisions may push even lower down the TDP chain. At or below 10W it should be possible to cram Haswell into something the thickness of a 3rd gen iPad. The move to 14nm in the following year will make that an even more desirable reality.

Although Haswell's design is compete and testing is ahead of schedule, I wouldn't expect to see parts in the market until Q2 2013.

Early next year we'll see limited availability of 10W Ivy Bridge ULV parts. These parts will be deployed in some very specific products, likely in the convertible Ultrabook space, and they won't be widely available. Any customer looking to get a jump start on Haswell might work with Intel to adopt one of these.

The limited availability of 10W ULV Ivy Bridge parts does highlight another major change with Haswell: Intel will be working much closer than it has in the past with OEMs to bring Haswell designs to market. Gone are the days when Intel could just release CPUs into the wild and expect its partners to do all of the heavy lifting. Similar to Intel's close collaboration with Apple on projects like the first MacBook Air, Intel will have to work very closely with its PC OEMs to bring the most exciting Haswell designs to market. It's necessary not just because of the design changes that Haswell brings, but also to ensure that these OEMs are as competitive as possible in markets that are heavily dominated by Apple (e.g. the tablet market).

Don't expect any earth shattering increases in CPU performance over Ivy Bridge, although I've heard that gains in the low double digits are possible. The big gains will come from the new GPU and on-package L4 cache. Broadwell (14nm, 2014) will bring another healthy set of GPU performance increases but we'll likely see more than we did from IVB with the transition to Haswell on the graphics side.

http://www.anandtech.com/show/6248/h...is-the-new-17w
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