Intel Quietly Ships Two Special "Yonah" CPUs
June 27, 2006 2:01 PM
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9W dual-core and 2.33GHz Yonah processors hit the streets
processor announced yesterday
, this week Intel is expected to start shipping two new Core Duo processors.
The new Core Duo T2700 is a 2.33GHz dual-core 65nm Yonah-based CPU, specifically targeted for high end notebooks and desktop replacement (DTR) devices. The processor is already shipping at some retail outlets, and should start showing up in high-end notebooks very soon. The previous high end model, the 2.16GHz T2600, was reduced to $423 on June 4th, but neither the T2600 nor T2700 will receive another discount until the
launch later this year
. The T2700 will sell for $637 in quantities of 1,000.
Furthermore, Intel is also discretely rolling out its Core Duo U2500 ultra-low voltage (ULV) CPU. The U2500 is currently the only dual-core ULV product in Intel's arsenal until the 1.06GHz U7500 Merom processor launches with Santa Rosa in Q2'07. The U2500 is a 1.2GHz
processor with 2MB L2 cache and a 533MHz FSB. The U2500 recently received some attention on
as it is the only x86 dual-core processor to ship with a
9W maximum TDP envelope
. The CPU consumes less than 1W during normal operation. The U2500 will sell for $289 per chip in quantities of 1,000.
Intel recently announced it would
spin off its XScale ARM CPU series
; a processor typically dedicated to extremely low voltage applications like cell phones and PDAs. With single-Watt dual-core processors now part in Intel's processor lineup, it may be that the company is considering x86 for these devices.
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RE: Wonder? Hardly...
6/28/2006 10:56:18 AM
The other advantage of under-volting a standard voltage Yonah is that you will likely have more motherboards that support it, as at least some of the Pentium M motherboards didn’t support any of the LV or ULV versions and this may have been true across the board. The same is likely to occur for Core Duo and this is even assuming that the ULV Core Duo will be available in a S479 packaging, which hasn’t been confirmed yet and seems unlikely.
I used CrystalCPUID to under-volt & under-clock a T2300 and estimate that it consumed ~8W @ 1.167 GHz (multi = 7), 1.004V, 667 FSB. Maybe a bad chip will only go as low as 10-11W, but is it worth paying the extra $80 on the odd chance of saving a couple of watts!
When estimating a TDP remember that the T2700 is 2.33 GHz at a max voltage of 1.4V and is rated at 31W. Wattage scales fairly linearly with clock speed and is proportional to the square of the voltage. This isn’t 100% accurate but close enough.
You can also use CrystalCPUID in laptops to in effect change a standard Core Duo to an ULV version and you get to choose your own max multiplier. I did this with an Inspiron 6400 when making the above measurements; the power consumption of the laptop with both cores on full load dropped from 43W to 27W when I used the above settings.
AFAIK, the big deal about these chips is that they come in a more compact packaging which is useful in smaller laptops. Sure they bin them, but I don’t think they have any problems getting enough parts; Intel’s mobile parts are that good.
"And boy have we patented it!" -- Steve Jobs, Macworld 2007
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