P45 chipset has higher TDP due the need of Northbridge (22W vs 4.7W) than the P55 so the extra 8W in Clarkdale is irrelevant.
http://www.intel.com/Assets/PDF/designguide/319972.pdf
http://www.intel.com/Assets/PDF/designguide/322171.pdf
Before the new Core series of processors came around most processors consisted of a processor, a chipset northbridge (with a graphics interface and memory controller, also called the Memory Controller Hub or MCH), and a southbridge (the I/O Controller Hub, or ICH). The potential power consumption of these three components has to be added together. The processors are rated from 65W up to 130W, a P45 MCH requires up to 22W, and the ICH10R is rated at 4.5W.
The Core platform, including theCore i3, Core i5 and i7series CPUs, introduced Intels first mainstream two-chip design. The memory controller slipped into the processor with Bloomfield (Core i7 on LGA 1366) and the PCI Express interface now follows suit. As a result, the need for a separate northbridge is gone, leaving mainly I/O and management functionality behind.
Given this slimmed-down arrangement, the P55 chipset is officially called the Platform Controller Hub, or PCH. Since large chunks of the PCH correspond to equivalent areas of the old ICH, net complexity and power consumption are similar.
Effectively, the new processors stay at the same power level as as some of the preceding Core 2 Quads: 95W. Compared to Core i7 on LGA 1366, the current core series of processors are already rated 35W lower. Moreover, the fact that there's no longer a discrete MCH means that 20-some watt piece of logic no longer contributes to overall power consumption.
You have to still account for the wattage either way, regardless. So yes it does matter it is a all in one design, so USB, GPU, etc all contribute to thermal constraints. Not just the processor. And all have to be given equal value when considering what to put into the machine.
How does the dual Core i5 650 compare to:
- quad core i5 in 27inch
- current C2D in 21.5 iMac and
- MacBook Pro Mobile i5 and i7?
am still on the fence on deciding whether I'll go with the 21.5 or 27 inch screen and I guess a good performance comparison between quad and dual core i5s and i7s would be interesting!
anyone have some good websites which has some of these comparisons? Thanks!
here are some good sites.
http://www.anandtech.com/show/2901
http://www.cpu-world.com/news_2010/2010052401_Core_i3-550_mini-review.html
Here you can compare just about any processor you would like, except for the newest ones such as the i3 550.
http://www.anandtech.com/bench/Product/144?vs=109
i have an i5 laptop and it smokes my old centrino duo laptop i used to have. i3 is the same thing except no hyperthreading or turboboost or whatever. the architecture is a lot faster than c2d
the intel HD is not fast, but not crap either. it's enough for 90% or so of the people out there
No turbo boost. It has hyperthreading.
Hey guys, I've read that intel GPUs are not great, and that the i3 has the intel GPU integrated. How would this compare to the Nvidia 9400m in the current base model iMac? Would the move to i3 be a small speed bump but with poorer GPU performance? How would the i3 with integrated intel GPU compare to mid-level 21.5 with C2D and ATI Radeon HD 4670?
The core i3 and i5 dual cores both have intergrated GPU's. Most likely Apple will add their own GPU's. No way no how is Apple going only with an intel GPU.
The Core i3 550 is more than a speed bump. It is faster than any C2D made and that includes the C2D E8600. Efficiency and multi-threaded applications will benefit the most.
http://www.cpu-world.com/CPUs/Core_...6003174AJ (BX80616I3550 - BXC80616I3550).html
http://www.cpu-world.com/news_2010/2010052401_Core_i3-550_mini-review.html
The core i3 540 to say nothing of the core i3 550 beat the fastest core series processor the E8600 in these tests by a score of 17 to 8. And the E8600 is a fast dual core processor and still is.
http://www.anandtech.com/show/2901
