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The new processor range features a design with up to 6 execution cores. Each core supports two threads, which we all know as ‘Intel Hyper Threading Technology'. This logical thread basis doubles the physical count, so a 6 core processor will have 6+6 for a total of 12. Each core has a 32kb instruction and a 32kb data first level cache (L1) and a 256kb shared instruction/data mid level (L2) cache. The new processors have between 10mb and 15mb of last level (LLC cache), up to 2.5 MB per core.
The processors support four DDR3 channels with a single unbuffered DIMM per channel. Officially they support memory of 1066mhz, 1333mhz and 1600mhz, although as we will see later this is just the beginning.
The Direct Media Interface Generation 2 (DMI2) serves as the chip to chip interface to the PCH. The DM12 port supports a x4 link width and only operates in x4 mode when in DMI2. It operates at PCIe2 or PCIe1 speeds and is transparent to software. There is support for processor and peer to peer writes and reads with 64 bit address support.
Above, a CPUz overview of our engineering sample Core i7 3930K processor. The processor has 6 cores and 12 threads, with 12MB of ‘Level 3' cache. The new chip has support for 40 PCI Express lanes. By comparison the 3960X EE has an extra 3 MB of level 3 cache, totaling 15MB.
The latest range of processors are based on Intel's ‘tock' cycle, before the 22nm Ivy Bridge chips hit retail in the near future.
| Product | Core i7 3960x | Core i7 3930K | Core i7 3820 |
| Base Clock Frequency | 3.3ghz | 3.2ghz | 3.6ghz |
| Turbo Mode Speed |
up to 3.9ghz
|
up to 3.8ghz | up to 3.9ghz |
| Unlocked multiplier |
yes
|
yes | partially |
| Cores/Threads |
6/12
|
6/12 | 4/8 |
| L3 cache | 15 MB | 12 MB | 10 MB |
| Memory controller | 4 channels | 4 channels | 4 channels |
Above, specifications of the latest range of high end Core i7 processors. Kitguru has already reviewed the Core i7 3960X and Core i7 3820. Today we complete the roundup with the 3930K.
Above the naked Core i7 3930K, it looks basically identical to the 3960X. The 3930K is particularly appealing because it is totally unlocked and if past experiences are anything to go by, with the right motherboard this chip will almost mirror the same performance of the flagship product for a fraction of the price.
Is the P9X79 WS LGA2011 WorkStation ‘the right' motherboard? Let us take a closer look.
Absolutely brilliant review, very interesting to see them both at 4.8ghz when rendering. That L3 cache does make a difference.
wish I could afford the 3930k. but id need to change my motherboard as well……. still when I get £800 this will be the changes!
Very informative review and the pictures of the mobo are great. glad I found the site today.
I feel sorry for AMD, I remember when they were closely matched, but sadly no more 🙁
Fantastic read. I can only speak for the Intel Core i7 3930k —
While the product itself is great, it doesn’t include a cooling fan, necessitating the purchase of an aftermarket cooler. As of Dec. 6th, there are only a few compatible fans available on the market and Corsair Hydro Series H80 High Performance Liquid CPU Cooler (CWCH80) is the only one that I know of that Amazon carries. Buyer beware!
http://www.amazon.com/gp/product/B00603QXPM/ref=as_li_ss_tl?ie=UTF8&tag=emjay2d-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B00603QXPM
Nice system, love asus motherboards, this one has a passively cooled northbridge too which is better than the others. I hate seeing small fans blocked by graphics cards.
AMD where are you? I long for the days of good FX processors. That 8150 was a disaster. double the cores of 2600k and still slower 🙁
Great review! Now I have both devices in my computer. I’m waiting a opportunity to get a ideal power suply and enjoy this awsome configuration!