Feeds

Intel 'Lynnfield'

Next-gen Core i7 - and Core i5

  • alert
  • submit to reddit

Secure remote control for conventional and virtual desktops

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.

Remote control for virtualized desktops

More from The Register

next story
All aboard the Poo Bus! Ding ding, route Number Two departing
Only another three days of pooing and I can have a ride!
Official: European members prefer to fondle Apple iPads
Only 7 of 50 parliamentarians plump for Samsung Galaxy S
Fujitsu CTO: We'll be 3D-printing tech execs in 15 years
Fleshy techie disses network neutrality, helmet-less motorcyclists
Space Commanders rebel as Elite:Dangerous kills offline mode
Frontier cops an epic kicking in its own forums ahead of December revival
Nexus 7 fandroids tell of salty taste after sucking on Google's Lollipop
Web giant looking into why version 5.0 of Android is crippling older slabs
Dragon Age Inquisition: Our chief weapons are...
Bioware's fantasy forces in fine fettle
prev story

Whitepapers

Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Simplify SSL certificate management across the enterprise
Simple steps to take control of SSL across the enterprise, and recommendations for a management platform for full visibility and single-point of control for these Certificates.
Top 5 reasons to deploy VMware with Tegile
Data demand and the rise of virtualization is challenging IT teams to deliver storage performance, scalability and capacity that can keep up, while maximizing efficiency.