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Thoughts on next MBP using i7 with Quad?
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Mac Enthusiast
Join Date: Aug 2001
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I'm getting ready to go back to school this summer and I'm in the mind to upgrade my MBP, which is MB134LL/A (2.5 GHz), and I'm wondering if Apple will add this new mobile version of the i7 Quad core? Will Intel have this processor available this year or by the traditional fall/late fall product line update? I can wait if it will be worth it. What say some of you?
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Moderator  Join Date: Apr 2000
Location: Gothenburg, Sweden
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Quadcore i7 mobile (codename Clarksfield) is here already - it was ready before the dualcore i7/i5 (codename Arrandale). The issue is that it runs rather hot, and so is forced to a low clockspeed. Apple will probably not use it. There will not be a straight threadshrink of that model, so the next mobile processor is from the next Intel generation (codename Sandy Bridge). The mobile version (Sandy Bridge-MB for now) is penciled in for Q4 of this year, but that usually just means that Intel will start shipping them to OEMs in December. Quadcore MBP is likely to show up by Q1 2011 or so.
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The low-end Mac Pro is the most overpriced Mac since the IIvx
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Posting Junkie
Join Date: Oct 2005
Location: Houston, TX
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Originally Posted by P 
Quadcore i7 mobile (codename Clarksfield) is here already - it was ready before the dualcore i7/i5 (codename Arrandale). The issue is that it runs rather hot, and so is forced to a low clockspeed.
This issue is alleviated by TurboBoost. While the advertised clockspeeds are low since they're for all 4 cores running, the with only 1 or 2 cores active the turbo takes it up to about the same clockrate as the duals.
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Mac Elite
Join Date: Jun 2004
Location: Edmonton, AB
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If they didn't make a G5 Powerbook they probably won't use this generation of quad core mobile Intel chips.
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Mac Enthusiast
Join Date: Aug 2001
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Thanks for the info! It makes since that if it runs hotter than the current dual core i7 that they wouldn't put a hotter chip in it. Especially if there are already a lot of complaints of it (dual i7) running too hot.
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Moderator Join Date: Apr 2000
Location: Gothenburg, Sweden
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Originally Posted by mduell
This issue is alleviated by TurboBoost. While the advertised clockspeeds are low since they're for all 4 cores running, the with only 1 or 2 cores active the turbo takes it up to about the same clockrate as the duals.
Sort of. The i7-720QM only goes to 2.4 GHz with two cores active, which is >20% lower than the 3.06GHz the i7-620M turbos up to with both cores. The i7-820QM goes to 2.8 GHz, and that one is crazy expensive by comparison. The only one that actually reaches the 620 is the inhumanly expensive and very hot i7-920QM. The quads will probably still win many cases due to their superior memory latency, but it is a very different situation from one on the desktop where even the i5-750 will crush all the duals in any reasonably designed test.
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The low-end Mac Pro is the most overpriced Mac since the IIvx
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