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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BSMonitor - Tuesday, January 4, 2011 - linkYou'd spend $80 on a 6-core MB ?? LOL
If you buy a 6-core Phenom, likely you'll be in th 140-180 range for a decent MB..
Funny how the cheapers rationalize their cheapness.
zipzoomflyhigh - Tuesday, January 4, 2011 - linkThat's not true at all. Most $40-50 AM3 mobo's support X6. If you don't game or overclock, you don't need extra pci-e lanes and extra cooling. Especially for a workstation.
Oxford Guy - Monday, January 3, 2011 - linkYeah, I'm stoked about the new low-level DRM.
This is sure to run it fast.
talevski - Thursday, January 6, 2011 - linki think that amd 880g mainbord with cpu araound 90 dolars plus some 55xx series gpu can do better in terms of encoding decoding video playback games etc. and all that without alot of money spend on inetl new socekets wich you have to trow away when they make the next cpu.So please corect me if i am wrong
pshen7 - Tuesday, February 22, 2011 - linkThe charts and the numbers say it all. This is definitely worth an upgrade for me!
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Shifu_V - Saturday, April 16, 2011 - linkHi everyone, i dicided to build a PC but made an 1 error getting the i7 2600 if anyone is interested in buying one please let me, it's brand new sealed in it original contents.
and i dont mind trading it in for a i7 2600k.
and i will match the price maybe even better
Skott - Monday, January 3, 2011 - linkI'm wondering how supply will be on release day? Often we see new components with low supply and online stores start price gouging from day one. New Egg is particularly known for such. Lets hope supply is very good off the bat. That 2600K looks really appealing to me.
evilspoons - Monday, January 3, 2011 - linkOne of the local computer stores had Sandy Bridge parts up for sale last week, but they're all gone now save for a few Asus P8P67 standard, pro, and deluxe boards.
I wasn't able to see what kind of money they were asking.
This review has convinced me that once the 2600K shows up again it's all I'll need. I was going to wait for socket 2011 but damn, the 2600 is already more than twice as fast in everything than my poor ol' Q6600.