The LGA-1156 Socket: Size and Installation

The first Core i7, Bloomfield, went into a 1366-pin LGA socket:

A year later we have Lynnfield, and it fits in a much tighter space:

The LGA-1156 socket and Lynnfield CPUs are about as big as the old LGA-775 sockets/chips:

From Left to Right: Intel Core i7 "Bloomfield" (LGA-1366), Intel Core i7 "Lynnfield" (LGA-1156), Intel Core 2 Quad "Yorkfield" (LGA-775)

Note the pad densitiy of Lynnfield vs. LGA-775 processors

The installation process is largely the same as any other Intel LGA socket, the difference being that LGA-1156 uses a new one-sided retention mechanism.

After the socket is "open", gently place the CPU on top of the pins. The chip can only fit in one direction so just pay attention:

With the chip in the socket and the lever still pulled back, move the socket cover over the CPU and slide its teeth under the retention screw on the opposite side:

Then, lower the lever, lock it in place and you're good to go:

Index New Heatsinks and Motherboards


View All Comments

  • Ben90 - Tuesday, September 08, 2009 - link

    Was reading it pretty casually thinking it was just a preview because i didnt think the NDA lifted yet.... then i saw a next page... looked at the tab and it has like 20 pages OMGOMGOMGOMG!!! ITS OUT LOL....Im gonna try really really hard to read the article before i go to the gaming performance though...prolly wont make it Reply
  • Lashek - Wednesday, September 09, 2009 - link

    you compare it to the Q6600 a lot in the text, but no comparison with an overclocked Q6600 is made in the benches...
    If you have figures of an overclocked Q6600, could you add them? all over the web these question are asked but business leaders who own these web sites dont want to challenge a overclocked core 2 duo,and quads,or is it politics?
  • coldpower27 - Thursday, September 10, 2009 - link

    You will have to compare an overclocked I750 or i860 to the Q6600 as that would only be fair, no sense doing a stock vs overclocked comparison.

    It is well known you can equal todays stock performance by overclocking to some degree, but if your going to compare overclock then you need to overclock both processors.

    Q6600 will be destroyed by i750 and i860 if you compare perf/watt however.
  • Joshaze - Wednesday, September 09, 2009 - link


    When testing World of Warcraft what processAffinityMask value where you using?

    The default value for this variable does not take advantage of all cores on the Core i7 processors.

    Here is the article discussing the CVAR:">

    The value should be 255 for 8 cores and 15 for 4 cores.

    If not, any chance you could retest using the above values and report back on any changes?
  • Googer - Wednesday, September 09, 2009 - link

    The lack of PS2 is a real deal killer for me, I have a beloved IBM Clicky Model M keyboard (1391401) and I will not give it up for anything. I know PS2-usb keyboard adapter exist but they just don't work very well.

    I am not alone, there are tens of thousands of vintage keyboard lovers out there and the IBM Model 1391401 is one of the more popular ones among keyboard aficionados.

    Kind of sad that a 20-30 year old keyboard still works as well as they day it was made, new cheaper keyboards are less acuurate, uncomfortable, very flimsy and are poorly made. You would be lucky to get 5-6 years out of 'some' of these newer $90+ keyboards.

    Save PS2, keep it alive. PS/2 has less lag than any USB keyboard I have tried. There are a lot of great keyboards still in use. There is no shortage of real estate on the back IO shields, so there should be no reason not to include a PS/2 port..
  • MamiyaOtaru - Thursday, September 10, 2009 - link

    Seconding this. USB is incapable of providing n-key rollover for keyboards. PS2 can. Not everyone needs that, but I won't do without it. Reply
  • Zoomer - Wednesday, September 09, 2009 - link

    I saw at least one PS2 port on these motherboards. What are you talking about again? Yes, they seem to be shared with the PS2 port for mice, but mice work the same on USB anyway. Reply
  • Taft12 - Wednesday, September 09, 2009 - link

    This is probably the most off-topic post I've seen on this site. Fortunately for all of us, your rant is invalid and you never have to say anything about this ever again:">
  • boogerlad - Tuesday, September 08, 2009 - link

    where't ta152h now? That idiot is finally done trolling. Reply
  • snakeoil - Wednesday, September 09, 2009 - link

    all the results of this review are biased because they were made with turbo enabled, that's at least 600 mhz overclocking.
    to be fair you must compare this results against a phenom 2 overclockded at least 600 mhz
    people is not stupid.

Log in

Don't have an account? Sign up now