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Intel Sandy Bridge E 3930K CPU Review

CPU by leeghoofd @ 2011-12-13

On the 14th of November Intel has shown it's brand new high end platform baptized Sandy Bridge E to the world. Almost all of the press sample kits included only the Extreme version aka the 3960X CPU. Some lucky hardware sites got a 3930K version, with unlocked multiplier, from a 3rd party to test or review. Since this K skew CPU is retailing at only half the price it could become quite a steal. This if it performs alike it's bigger brother. Major difference between the Extreme and the K version is the reduced L3 cache from 15Mb down to 12Mb. Yet, as mentioned before, the multiplier remains fully unlocked, similar to the K skews of the little 2500K and 2600K socket 1155 models, the latter two being heavily popular, as speeds over 4.5Ghz are a breeze. Before continuing with the review : a big thanks to the guys from Tones webshop to supply us with a brand new retail 3930K CPU. Now let's get it on !

4000Mhz Clock per clock test

Before we continue with the daily OC tests and SLi setup a quick comparison off most of our CPUs at the same core speed of 4000Mhz. This to to get an idea of Instructions per Clock (IPC) efficiency. The Corsair RAMs are as always running at 1600Mhz CL8-8-8-24 1T. Keep an eye on the 3930K versus the expensive 3960X CPU. It's all about the cache now between the two SB-E stars.

Observing a very small discrepancy between the two s2011 CPUs. Though the lesser cache effect is already felt in SuperPi 1M. Might not mean much for a normal user, for a bencher this is mucho mucho important. Secondly this is a very brief test. Time to check how the longer 32M version faires.

Close to 2 secs difference in this test, but look at the boost coming from the Gulftown ( i7-970 ) architecture. A big step forward for the new Socket 2011 high end platform.

Bandwith improved a bit via the new Intel bios for their X79DSI mobo. Readout isn't that snappy compared to the dual channel SB's.

Seems Cinebench loves the extra cache, one of the few benchmarks together with X264HD that really gives a damn about it's presence...

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