"Merom" TDP Not All That
August 17, 2006 2:18 PM
comment(s) - last by
"Merom" runs hot, "Yonah" might be the better chip for notebooks
Intel began releasing specifications of the new
processor to its motherboard partners today. For those expecting
to increase performance over Yonah while simultaneously decreasing the thermal envelope, think again.
The top of the line
processor, the T2700, has a TDP of 31W at 2.33GHz clock frequency. All Core 2 Duo
processors have a TDP of 34W, including the lowly 1.66GHz T5500. In comparison, the 1.66GHz Yonah rings in at 27W.
Surely with Enhanced Speed Step these numbers get better, we'd think. In "Battery Mode," all
processors clock down to 1GHz and 0.75V -- yet amazingly the TDP is still 20W.
, which also clocks down to 1GHz in Battery Mode with a 0.95V core has a TDP of 13.1W.
Those expecting to pop in a Core 2 Duo Merom processor to alleviate
an overheating MacBook Pro
, look not here. Merom is a better performing processor than Yonah, but its thermals on paper show its advantages are only in performance and not in thermals at all.
Intel will counter these poor thermals with more "Low Voltage" and "Ultra Low Voltage" processors. Just a few weeks ago, Intel announced an Ultra-Low Voltage (ULV)
processor running on
a TDP of just 9W
. Intel's newest roadmap includes the U7500, an ultra-low voltage version of Merom. However, given the fact that the normal voltage Yonahs have a lower TDP than the average
processor, we'd be hard pressed to think U7500 could possibly run cooler than its
This article is over a month old, voting and posting comments is disabled
RE: Look at AT's comparison
8/18/2006 7:02:04 PM
One could argue, however, that Merom is able to spend a larger percentage of its time in a low-power state as it is able to complete tasks more quickly. I'm not sure how much impact this would have in practice, though.
RE: Look at AT's comparison
8/19/2006 10:50:23 AM
I noticed thermals were lacking in the AT review? Or did I miss something?
"I'd be pissed too, but you didn't have to go all Minority Report on his ass!" -- Jon Stewart on police raiding Gizmodo editor Jason Chen's home
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