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Intel Sandy Bridge CPU In-Depth Look at Overclocking, Memory Timings and More

CPU by leeghoofd @ 2011-02-01

First introduced at the CES, Intel’s new Sandy Bridge CPU architecture is here to flood the mainstream market with over 25 CPUs. Don't panic, most are foreseen for the mobile market and only 9 new models will be introduced for the desktop segment. Coinciding with this new release is also a new socket design. 1155 pins will be the new standard for Intel’s mainstream lineup. Yes you guessed it, Sandy bridge is here to replace socket 1156. Slowly but steadily Clarkdale and Lynnfield will become End Of Life and will be phased out. At the Sandy Bridge Tech conference the representatives of Intel said that the current S1366 i7 lineup (Bloomfield and Gulftown) will remain their high end platform. Time to explore Sandy Bridge...

hang in there : 1866Mhz tested

1866Mhz up next, will it bring even more performance or is there a setback ?:

First test start off pretty good, a small improvement over the two benchmarks, CPU and RAM wise. Sandy seems to enjoy every minute of it.

Wprime 1024 is within the error of margin now, but SuperPi 32M keeps on putting out faster numbers. AIDA64 will probably indicate nicely what exactly is going on.

The Write tests shows a marginal improvement, but again Copy and Read get a healthy boost. It doesn't stop to amaze me !

X264HD gains zero to none with the decreased timings. Did we reach a sweet spot ? Let's continue with the tests, to see if there's more...

Yep, being repetitively as ever : tiny gains, but nothing really earth-shattering to see here. It scales a little bit, but again far less as with the lower ram clocks.

Pcmark05 scoring less than 80 points better, similar to the encoding tests. Timings don't seem to matter that much anymore at these speeds.

Even the 3DMarks are neck to neck with the 1600Mhz results. Even sometimes being beaten by the 1600Mhz C6 setup. Let's see if the games get a few FPS more with the improved bandwidth.

Blimey around 1 FPS difference, that's all there's too it. Think we can almost conclude that for a daily user, 1600mhz ram speed is more than sufficient. Giving a great overall combination of speed and efficiency.

Comment from Teemto @ 2011/02/02

52x102 here with flares at 2176-6/9/6/24
SuperPi and Pifast stable.

Comment from leeghoofd @ 2011/02/02

So use these clocks too then for 3D Pascal

Comment from Teemto @ 2011/02/02

Yes my master.

Comment from thorgal @ 2011/02/03

So which settings did you use for 5Ghz

It's those "just a few settings" that interest me

I always want to learn from a master

Comment from Stefan Mileschin @ 2011/02/04

Quote:

Originally Posted by Teemto

Yes my master.

Is the system stable in 3DMark 2005 CPU test too at those frequencies?

Comment from Teemto @ 2011/02/04

Nope. That's realy the max I could go.
Haven't played around with the other voltages though.
Maybe Albrecht can shed some light if this could improve stability/OC'ability?

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