Feeds

Intel 'Lynnfield'

Next-gen Core i7 - and Core i5

  • alert
  • submit to reddit

Mobile application security vulnerability report

Intel has enhanced the Turbo Boost feature for Lynnfield and this is worth a closer look. Turbo Boost is a dynamic overclocking tool that increases the clock speed when the CPU is under load, so long as it continues to operate inside its thermal limits.

Intel Core i7 870

The i7 900 made limited use of Turbo Boost and only raised the CPU clock speed by one step of the 133MHz base clock for all four cores, or two steps if the software was thrashing one or two cores. In other words, a 2.66GHz Core i7 920 would accelerate to 2.8GHz on all four cores or 2.93GHz on one or two cores. This is a welcome increase, but the vast majority of enthusiasts who lay out the cash for Core i7 900 will surely want to overclock way beyond that point.

Lynnfield increases the impact of Turbo Boost by bumping the clock speed of all four cores of a 95W TDP CPU by two steps (266MHz) when the CPU is under load. If the software you are using only takes advantage of two processor cores then Turbo Boost can increase the clock speed by another two steps: 533MHz above the standard speed. If you are only using a single core, Turbo Boost will raise the speed by a total of five steps, or 666MHz. This means that Intel will dynamically overclock our 2.93GHz Core i7 870 to 3.2GHz on all four cores, 3.46GHz on two cores, or 3.6GHz on one core.

The low-power 82W TDP Lynnfield CPUs have another trick up their silicon sleeves. Turbo Boost will raise the clock speed of all four cores by a single step, but two cores can run a further five steps faster, and one core can go another step faster for a total of seven steps, or 933MHz.

It's anticipated that there will be five initial models of Lynnfield:

  • Core i7 870 2.93GHz (3.6GHz), 95W TDP
  • Core i7 860 2.8GHz (3.46GHz), 95W TDP
  • Core i5 750 2.66GHz (3.2GHz), 95W TDP
  • Core i7 860 2.53GHz (3.46GHz), 82W TDP
  • Core i5 750 2.4GHz (3.2GHz), 82W TDP

We were sent a Core i7 870 sample with a clock speed of 2.93GHz and a stock Intel CPU cooler. The Core i7 900 has a hefty maximum TDP of 130W that covers the whole family from Core i7 920 to 975 Extreme, while the first Lynnfield CPUs will have a TDP of 95W. This is a welcome step but Intel annoyingly set the LGA1156 cooler mounts are just a couple of millimetres closer together than the ones on the LGA1366 socket.

Boost IT visibility and business value

More from The Register

next story
Report: American tech firms charge Britons a thumping nationality tax
Without representation, too. Time for a Boston (Lincs) Macbook Party?
iPad? More like iFAD: We reveal why Apple fell into IBM's arms
But never fear fanbois, you're still lapping up iPhones, Macs
Apple gets patent for WRIST-PUTER: iTime for a smartwatch
It does everything a smartwatch should do ... but Apple owns it
Apple orders huge MOUNTAIN of 80 MILLION 'Air' iPhone 6s
Bigger, harder trouser bulges foretold for fanbois
Microsoft takes on Chromebook with low-cost Windows laptops
Redmond's chief salesman: We're taking 'hard' decisions
For Lenovo US, 8-inch Windows tablets are DEAD – long live 8-inch Windows tablets
Reports it's killing off smaller slabs are greatly exaggerated
Cheer up, Nokia fans. It can start making mobes again in 18 months
The real winner of the Nokia sale is *drumroll* ... Nokia
Microsoft unsheathes cheap Android-killer: Behold, the Lumia 530
Say it with us: I'm King of the Landfill-ill-ill-ill
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Reducing security risks from open source software
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.