Feeds

Intel 'Lynnfield'

Next-gen Core i7 - and Core i5

  • alert
  • submit to reddit

Security for virtualized datacentres

We also tested the overclocked Core i7 940 with Turbo Boost disabled and found that the feature doesn’t have much value - its speed increase is marginal. You'll often find that the overclocking fraternity disable SpeedStep and Turbo Boost when they are working with Core i7 to assist stability.

CPU-Z: Core i7 870

And so we come to our first experience of overclocking the i7 870 and we have to admit that it didn’t go especially well.

We raised the CPU core voltage slightly along with the QPI voltage, which is intriguing as Lynnfield uses DMI rather than QPI, but that's what the Bios calls it nonetheless. With these settings we were only able to raise the base clock from 133MHz to 150MHz which resulted in a pathetic clock speed of 3.3GHz. We ran the overclocked i7 870 with Turbo Boost on and off, and also with HyperThreading disabled to mimic how a Core i5 770 might perform when Intel gets round to inventing it.

Our results clearly show that both HyperThreading and Turbo Boost play their part in increasing performance, and this is especially clear in the ‘All CPUs’ test in Cinebench. In an older benchmark, such as PCMark05, the benefit is minimal.

Things would be a good deal clearer if we were able to spell out our test results, but the Intel NDA makes things tricky. At this stage in the proceedings, our view was that the i7 870 was marginally inferior to the i7 940. The snag here is that the i7 940, which has been replaced by the 950, is an expensive luxury as you can overclock a £200 Core i7 920 close to 4GHz if you use a decent motherboard.

Asus P7P55 Pro

Asus P7P55D Deluxe: ideal for overclocking?

Things took a turn for the better when Asus sent us a P7P55D Deluxe motherboard along with the assurance that it overclocks like a dream. We ran the i7 870 with the same settings we used on the Gigabyte mobo, although the QPI voltage setting has been renamed IMC. Initially, we found no difference to the clock speeds we could achieve. However, Asus was adamant that Lynnfield requires the bare minimum of voltage. This is somewhat strange as the P7P55D Deluxe has three switches that allow you to use enhanced voltage settings in the Bios for Ram, CPU and IMC.

New hybrid storage solutions

More from The Register

next story
Apple iPhone 6: Missing sapphire glass screen FAIL explained
They just cannae do it in time, says analyst
Slap my Imp up: Bullfrog's Dungeon Keeper
Monsters need to earn a living too
Oh noes, fanbois! iPhone 6 Plus shipments 'DELAYED' in the UK
Is EMBIGGENED Apple mobile REALLY that popular?
Apple's big bang: iPhone 6, ANOTHER iPhone 6 Plus and WATCH OUT
Let's >sigh< see what Cupertino has been up to for the past year
The Apple Watch and CROTCH RUBBING. How are they related?
Plus: 'NostrilTime' wristjob vid action
Apple's SNEAKY plan: COPY ANDROID. Hello iPhone 6, Watch
Sizes, prices and all – but not for the wrist-o-puter
Apple Pay is a tidy payday for Apple with 0.15% cut, sources say
Cupertino slurps 15 cents from every $100 purchase
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
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.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.