Wow! Thats the lowest number I've heard yet! It seems like the performance boost from Penryn keeps getting lower and lower the longer we wait for it.
Here are some exact figures for you from actual testing, but in summary:
1. Penryn improves battery life by 16% -- very nice.
2. Penryn improves "productivity" in day to day use by 6%
3. In SSID applications performance is 30%. -- very few apps use SSID now.
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The test results:
http://www.appleinsider.com/article..._offer_marginal_battery_and_speed_boosts.html
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In effect, the Productivity 2007 test emulates a SYSMark 2007 Productivity test, but does so with a focus on how long the battery will last, not how fast the system can perform. In this test, the Penryn-based notebbok lasted an extra 55 minutes, or an increase of almost 16.5 percent in battery life over the identically configured Merom system.
The results of the Reader 2007 test, which simulates mostly idle time when a notebook user would be reading a digital document, were similar but more marginal. In this test, battery performance improved 5.6 percent or a total of 23 minutes on the Penryn notebook compared to the older Merom-based system.
Mobile Penryn vs. mobile Merom battery tests | Source: AnandTech.
Again, and as would be expected, the Penryn notebook outperformed the Merom system in a DVD playback test, offering up to 18 minutes longer battery life for an approximate 7 percent increase in battery performance.
As noted by AnandTech, these increases in battery life will come at no additional charge to the end user, as Intel has priced the new mobile Penryn chips in line the the Merom-based models they replace. PC manufacturers like Dell and Apple are expected to adopt the chips as part of their mid-winter notebook refreshes, which will similarly arrive at price points that are either in line or cheaper than the price points of the systems they replace.
In general processor performance, the Penryn-based notebook was also marginally faster than the Merom-based system, boasting a MobileMark Productivity 2007 score that was 6.4 percent higher. Results of several SYSMark 2007 tests yielded similar results, with the Penryn system besting the Merom system by a range of 1 to 8 percent depending on the test.
Where the mobile Penryn really outshines its predecessor is in support for applications written to take advantage of Intel's Supplemental Streaming SIMD Extension 4 (SSE4) instruction set, which is making its debut as part of Intel's broader Penryn platform.
Mobile Penryn vs. mobile Merom battery tests | Source: AnandTech.
Running Intel's TMPEGEnc benchmark, which does take advantage of SSE4 during a movie transcode, AnandTech was able to witness a wide performance gap. The Penryn-based system, because of its SSE4 support, completed the encoding test in 31 percent less time than the Merom system that lacked such support.