Intel To Expand Core M Broadwell Line With Faster Dual-Core Processors
MojoKid writes: Intel didn't waste much time following-up on its initial Core M lineup launch. The company has added 4 more Core M models to its roster. Like the launch chips, these four are dual-core designs that support HyperThreading to enable an effective four logical threads for processing. Also like those earlier chips, these are spec'd with a TDP of 4.5W. These new chips, however, are generally faster than the launch models, with a new top-end processor called the M-5Y71. This chip has a base clock speed of 1.2GHz, but is burstable through Turbo up to 2.9GHz. What really sets these chips apart from the initial Core M models is that their TDP is scalable, based on what the builder is looking to do with it. If the chip is set to be used in a notebook with very little free space, the OEM could opt to drop the chip down to 3.5W and lose 600MHz in the process. By contrast, a bulkier notebook could handle a hotter chip better, so a higher TDP could be decided upon. If that route's taken, any one of these new chips could peak at 6W and add 200MHz to the base and top-end clocks.
How much can they do with overvolting and watercooling?
thegodmovie.com - watch it
For so many years in a row, Intel has been making faster and faster processors. This year, for a change, they have decided to focus on making only slower processors, and the Broadwell series is the result! This year they are slowing down the CPUs, next year they will slow down the system bus ...
Very cool technically speaking, and good for system designers ... it will, however, make it that much harder to comparison shop, if the same CPU has a different speed depending on how it's wired up.
You mean one can set the clock on these...
If it's like their first M processor, the turbo boost mode only works when using a single core. i.e. You can run one core at 2.9 GHz, or you can run both cores at 1.2 GHz. That's the price you pay for the extremely low TDP. In contrast, an i5-4250U has a base clock of 1.3 GHz, can turbo boost to 2.3 GHz on two cores, and 2.6 GHz on a single core.
That there would be more breakthroughs in CPU clock speed (per core) rather than multicore having to take up all the slack? In the 80s and 90s, we expected to see doubling of speeds every few years, but there have been only marginal increases in speed of each individual core for quite some time now. I sorely miss those days :)
Stop'd read'n at that po't.
Well, if the peak is 6w, that is easily in the power envelope of USB. (6w = 5v@1.1a)
The maximum current for USB 2.0 is 500mA and for USB 3.0 it is 900mA, so 6W is well outside the power budget for a USB-powered device. 4.5W is possible on USB 3.0 as long as you don't want power for anything else like a screen, memory or other peripherals. It is more manageable with the 3.5W option but at 600MHz you are way below the performance of equivalent ARM-based parts with the same power profile, so you have to really want x86 in your device.
"(6w = 5v@1.1a)"
Are Intel still having problems with their floating point maths?
5V x 1.1A = 5.5 W
So if I want a real low power consumption desktop small form factor are there motherboards that I can get that will use these?
The question I would like to see answered is, do any of these chips support ECC memory? The additional circuitry has trivial cost. Additional memory does add to the price, but that isn't very much of the price. Meanwhile, even embedded devices now have enough memory that getting hit by cosmic rays will cause enough failures to be a major concern.