Feeds
65%

Intel P45 desktop chipset

Makes life more difficult for overclockers

Application security programs and practises

Added to that, P45 motherboards support a feature called DRAM Read Training. DDR 3 models also support DRAM Write training as DDR3 uses fly-by topology so we immediately have a new level of complication.

We’ve been given a stack of rules by motherboard manufacturers for P45 overclocking starting with a straightforward one for the northbridge voltage: it can be left at default value if the FSB is below 400MHz, rising to 1.3V for 400-500MHz and a maximum of 1.4V for 500MHz and above.

Then there’s the CPU VTT value, which should be set higher than the northbridge voltage but no more than 1V higher.

Power Draw Results

Intel P45 - Power Draw Results

Power Draw in Watts (W)

The third area to consider is the northbridge GTL reference voltage measurement figure. With P35 you want a ratio of 0.61x-0.67x with 0.62x as an ideal, but with P45 the range is 0.37x-0.76x and 0.67x is ideal for a Penryn processor.

If you work very hard indeed at overclocking a Penryn processor on P45 you will get the same results that you can achieve in a matter of minutes on P35, which doesn’t sound like much of a deal. In our experience, you’d do well to leave the manual Bios settings alone and stick to the Auto settings that have been created by the motherboard manufacturer.

It seems to us that P45 is a taste of what is to come with Nehalem/Core i7 and P55/X58 chipsets as overclocking control slips away from the avid customer back into the hands of the manufacturers.

Verdict

P45 is the end of the line for Intel chipsets that use a frontside bus and include a memory controller. Although it buffs up the few rough edges that existed with P35, the new chipset makes life more difficult for the overclocker.

Eight steps to building an HP BladeSystem

65%

Intel P45 desktop chipset

The last of its line, the P45 adds little to the feature set of its predecessor.
Price: P45-based mobos: £75-120 RRP

More from The Register

next story
Sysadmin Day 2014: Quick, there's still time to get the beers in
He walked over the broken glass, killed the thugs... and er... reconnected the cables*
SHOCK and AWS: The fall of Amazon's deflationary cloud
Just as Jeff Bezos did to books and CDs, Amazon's rivals are now doing to it
Amazon Reveals One Weird Trick: A Loss On Almost $20bn In Sales
Investors really hate it: Share price plunge as growth SLOWS in key AWS division
US judge: YES, cops or feds so can slurp an ENTIRE Gmail account
Crooks don't have folders labelled 'drug records', opines NY beak
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
BlackBerry: Toss the server, mate... BES is in the CLOUD now
BlackBerry Enterprise Services takes aim at SMEs - but there's a catch
The triumph of VVOL: Everyone's jumping into bed with VMware
'Bandwagon'? Yes, we're on it and so what, say big dogs
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
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.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.