The Sandy Bridge Review: Intel Core i7-2600K, i5-2500K and Core i3-2100 Testedby Anand Lal Shimpi on January 3, 2011 12:01 AM EST
I don’t include a lot of super markety slides in these launch reviews, but this one is worthy of a mention:
Sandy Bridge is launching with no less than 29 different SKUs today. That’s 15 for mobile and 14 for desktop. Jarred posted his full review of the mobile Core i7-2820QM, so check that out if you want the mobile perspective on all of this.
By comparison, this time last year Intel announced 11 mobile Arrandale CPUs and 7 desktop parts. A year prior we got Lynnfield with 3 SKUs and Clarksfield with 3 as well. That Sandy Bridge is Intel’s biggest launch ever goes without saying. It’s also the most confusing. While Core i7 exclusively refers to processors with 4 or more cores (on the desktop at least), Core i5 can mean either 2 or 4 cores. Core i3 is reserved exclusively for dual-core parts.
Intel promised that the marketing would all make sense one day. Here we are, two and a half years later, and the Core i-branding is no clearer. At the risk of upsetting all of Intel Global Marketing, perhaps we should return to just labeling these things with their clock speeds and core counts? After all, it’s what Apple does—and that’s a company that still refuses to put more than one button on its mice. Maybe it’s worth a try.
Check Jarred’s article out for the mobile lineup, but on desktop here’s how it breaks down:
|Processor||Core Clock||Cores / Threads||L3 Cache||Max Turbo||Max Overclock Multiplier||TDP||Price|
|Intel Core i7-2600K||3.4GHz||4 / 8||8MB||3.8GHz||57x||95W||$317|
|Intel Core i7-2600||3.4GHz||4 / 8||8MB||3.8GHz||42x||95W||$294|
|Intel Core i5-2500K||3.3GHz||4 / 4||6MB||3.7GHz||57x||95W||$216|
|Intel Core i5-2500||3.3GHz||4 / 4||6MB||3.7GHz||41x||95W||$205|
|Intel Core i5-2400||3.1GHz||4 / 4||6MB||3.4GHz||38x||95W||$184|
|Intel Core i5-2300||2.8GHz||4 / 4||6MB||3.1GHz||34x||95W||$177|
|Intel Core i3-2120||3.3GHz||2 / 4||3MB||N/A||N/A||65W||$138|
|Intel Core i3-2100||2.93GHz||2 / 4||3MB||N/A||N/A||65W||$117|
Intel is referring to these chips as the 2nd generation Core processor family, despite three generations of processors carrying the Core architecture name before it (Conroe, Nehalem, and Westmere). The second generation is encapsulated in the model numbers for these chips. While all previous generation Core processors have three digit model numbers, Sandy Bridge CPUs have four digit models. The first digit in all cases is a 2, indicating that these are “2nd generation” chips and the remaining three are business as usual. I’d expect that Ivy Bridge will swap out the 2 for a 3 next year.
What you will see more of this time around are letter suffixes following the four digit model number. K means what it did last time: a fully multiplier unlocked part (similar to AMD’s Black Edition). The K-series SKUs are even more important this time around as some Sandy Bridge CPUs will ship fully locked, as in they cannot be overclocked at all (more on this later).
|Processor||Core Clock||Cores / Threads||L3 Cache||Max Turbo||TDP|
|Intel Core i7-2600S||2.8GHz||4 / 8||8MB||3.8GHz||65W|
|Intel Core i5-2500S||2.7GHz||4 / 4||6MB||3.7GHz||65W|
|Intel Core i5-2500T||2.3GHz||4 / 4||6MB||3.3GHz||45W|
|Intel Core i5-2400S||2.5GHz||4 / 4||6MB||3.3GHz||65W|
|Intel Core i5-2390T||2.7GHz||2 / 4||3MB||3.5GHz||35W|
|Intel Core i5-2100T||2.5GHz||2 / 4||3MB||N/A||35W|
There are also T and S series parts for desktop. These are mostly aimed at OEMs building small form factor or power optimized boxes. The S stands for “performance optimized lifestyle” and the T for “power optimized lifestyle”. In actual terms the Ses are lower clocked 65W parts while the Ts are lower clocked 35W or 45W parts. Intel hasn’t disclosed pricing on either of these lines but expect them to carry noticeable premiums over the standard chips. There’s nothing new about this approach; both AMD and Intel have done it for a little while now, it’s just more prevalent in Sandy Bridge than before.
In the old days Intel would segment chips based on clock speed and cache size. Then Intel added core count and Hyper Threading to the list. Then hardware accelerated virtualization. With Sandy Bridge the matrix grows even bigger thanks to the on-die GPU.
|Processor||Intel HD Graphics||Graphics Max Turbo||Quick Sync||VT-x||VT-d||TXT||AES-NI|
|Intel Core i7-2600K||3000||1350MHz||Y||Y||N||N||Y|
|Intel Core i7-2600||2000||1350MHz||Y||Y||Y||Y||Y|
|Intel Core i5-2500K||3000||1100MHz||Y||Y||N||N||Y|
|Intel Core i5-2500||2000||1100MHz||Y||Y||Y||Y||Y|
|Intel Core i5-2400||2000||1100MHz||Y||Y||Y||Y||Y|
|Intel Core i5-2300||2000||1100MHz||Y||Y||N||N||Y|
|Intel Core i3-2120||2000||1100MHz||Y||N||N||N||N|
|Intel Core i3-2100||2000||1100MHz||Y||N||N||N||Y|
While almost all SNB parts support VT-x (the poor i3s are left out), only three support VT-d. Intel also uses AES-NI as a reason to force users away from the i3 and towards the i5. I’ll get into the difference in GPUs in a moment.
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Rick83 - Monday, January 3, 2011 - linkI just checked the manual to MSI's 7676 Mainboard (high-end H67) and it lists cpu core multiplier in the bios (page 3-7 of the manual, only limitation mentioned is that of CPU support), with nothing grayed out and overclockability a feature. As this is the 1.1 Version, I think someone misunderstood something....
Unless MSI has messed up its Manual after all and just reused the P67 Manual.... Still, the focus on over-clocking would be most ridiculous.
Rick83 - Monday, January 3, 2011 - linkalso, there is this:http://www.eteknix.com/previews/foxconn-h67a-s-h67...
Where the unlocked multiplier is specifically mentioned as a feature of the H67 board.
So I think anandtech got it wrong here....
RagingDragon - Monday, January 3, 2011 - linkOr perhaps CPU overclocking on H67 is not *officially* supported by Intel, but the motherboard makers are supporting it anyway?
IanWorthington - Monday, January 3, 2011 - linkSeems to sum it up. If you want both you have to wait until Q2.
8steve8 - Monday, January 3, 2011 - linkso if im someone who wants the best igp, but doesn't want to pay for overclockability, i still have to buy the K cpu... weird.
beginner99 - Monday, January 3, 2011 - linkyep. This is IMHO extremely stupid. Wanted to build a PC for someone that mainly needs CPU power (video editing). An overclocked 2600k would be ideal with QS but either wait another 3 month or go all compromise...in that case H67 probably but still paying for K part and not being able to use it.
Intel does know how to get the most money from you...
Hrel - Monday, January 3, 2011 - linkhaha, yeah that is stupid. You'd think on the CPU's you can overclock "K" they use the lower end GPU or not even use one at all. Makes for an awkward HTPC choice.
AkumaX - Monday, January 3, 2011 - linkomg omg omg wat do i do w/ my i7-875k... (p.s. how is this comment spam?)
AssBall - Monday, January 3, 2011 - linkMaybe because you sound like a 12 year old girl with ADHD.
usernamehere - Monday, January 3, 2011 - linkI'm surprised nobody cares there's no native USB 3.0 support coming from Intel until 2012. It's obvious they are abusing their position as the number 1 chip maker, trying to push Light Peak as a replacement to USB. The truth is, Light Peak needs USB for power, it can never live without it (unless you like to carry around a bunch of AC adapters).
Intel wants light peak to succeed so badly, they are leaving USB 3.0 (it's competitor) by the wayside. Since Intel sits on the USB board, they have a lot of pull in the industry, and as long as Intel wont support the standard, no manufacturer will ever get behind it 100%. Sounds very anti-competitive to me.
Considering AMD is coming out with USB 3.0 support in Llano later this year, I've already decided to jump ship and boycott Intel. Not because I'm upset with their lack of support for USB 3.0, but because their anti-competitive practices are inexcusable; holding back the market and innovation so their own proprietary format can get a headstart. I'm done with Intel.