Feeds

The best memory config for a Core i7 CPU

All the options tested

Intelligent flash storage arrays

How good is triple-channel memory?

We started by setting up a test system with an Intel DX58SO motherboard along with a Core i7 920 processor, 3x1GB of Qimonda 1066MHz DDR 3 Ram and an Intel X25-M SSD running 32-bit Windows Vista Ultimate. The nature of the Intel motherboard with its four memory slots meant that we could install 3GB of memory in triple-channel mode, 2GB or 3GB in dual-channel, and 2GB in single-channel mode.

SiSoft Sandra Results
Bandwidth

SiSoft Sandra

Memory Bandwidth in Gigabytes per Second (GB/s)
Longer bars are better

Latency

SiSoft Sandra

Memory Latency in Nanoseconds (ns)
Shorter bars are better

SiSoft Sandra shows that the memory bandwidth climbs in big steps as each memory channel is added with 7.4GB/s for single channel, 12.7GB/s or 12.8GB/s for dual channel, and 17.1GB/s in triple channel mode. The memory bandwidth didn't scale as steeply as we might have hoped, and increased by some 70 per cent as each extra channel was added. The latency remained steady at 86ns or 87ns.

PCMark Vantage Results

PCMark Vantage

Longer bars are better

We used PCMark Vantage to see what effect these huge changes in memory bandwidth would have across a range of tasks and were only slightly surprised to see that the answer is ‘very little’. The system delivers stacks of performance with 2GB of memory in single-channel mode which barely changed when we switched to 2GB in dual-channel mode. 3GB of dual-channel memory is a surprisingly effective configuration, while triple-channel appears to be a small step backwards.

Verdict
Don’t worry too much about triple-channel memory as two channels work just as well.

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
Hi-torque tank engines: EXTREME car hacking with The Register
Bentley found in a hedge gets WW2 lump insertion
What's MISSING on Amazon Fire Phone... and why it WON'T set the world alight
You fought hard and you saved and earned. But all of it's going to burn...
Trousers down for six of the best affordable Androids
Stylish Googlephones for not-so-deep pockets
Download alert: Nearly ALL top 100 Android, iOS paid apps hacked
Attack of the Clones? Yeah, but much, much scarier – report
Fujitsu CTO: We'll be 3D-printing tech execs in 15 years
Fleshy techie disses network neutrality, helmet-less motorcyclists
prev story

Whitepapers

10 ways wire data helps conquer IT complexity
IT teams can automatically detect problems across the IT environment, spot data theft, select unique pieces of transaction payloads to send to a data source, and more.
Why CIOs should rethink endpoint data protection in the age of mobility
Assessing trends in data protection, specifically with respect to mobile devices, BYOD, and remote employees.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
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?
Mitigating web security risk with SSL certificates
Web-based systems are essential tools for running business processes and delivering services to customers.