Intel LGA1155 Sandy Bridge Platform Explanation H67 P67 Locked & Unlocked CPUs Linus Tech Tips
Linus Tech Tips
·Linus Tech Tips
·2011-05-08
·
758 words · ~3 min read
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Today on my video blog, we're going to be demystifying the new Intel
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Sandybridge processors and the chipsets that go with them a little bit, or at
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least we're going to be attempting to do so. Now, there's a few new features on
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these chips, or a few important features, let's say. So, let's start
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with Intel Turbo. So turbo, as we're
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familiar with already from the Core i7 original processor, allows the chip to
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overclock itself if you have enough cooling and you're not uh overstepping
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the thermal design power. So turbo
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processors such as the Core i5 2400 are allowed to turbo themselves up up to
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four speed grades above their stock frequency if you're using only one core.
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They also Okay, so here let's uh let's let's start sort of working our way
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along here. So they are also allowed to
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turn up the multiplier and OC up to four
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speed bins above that four speed bins.
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So up to eight speed bins
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or multiplier levels on the P67 chipset.
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This is also the same as over here. Okay. On the H67, it can only use turbo
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mode. That's it. No additional overclocking. So, four speed bins,
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turbo there. So, that is a regular turbo
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processor. Then there are completely non-turbo processors. In terms of
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overclocking, we have no support on H67,
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no support on P67, and no support on
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Z68. Nothing. You can overclock probably about 5% if you turn up the base clock,
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but it's really not recommended because you can do all kinds of nasty stuff like
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corrupt your hard drive and just don't do it. Okay, so then we've got unlock.
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So yeah, example would be like a low-end Core i3. All right, unlocked. So these
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ones have turbo because all the unlocked chips are already reasonably high-end
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chips and they also have a suffix K. So the example we're using is the Core i7
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2600 K. All right. So, you cannot
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increase Oh, well, okay. I guess you got support
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for the four-speed regular turbo.
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Okay. You have completely up to whatever
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the heck you want in terms of overclocking on P67, and you have up to
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whatever you want on Z68, which isn't
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out yet. So, these guys, you can overclock as much as you could possibly
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want. Well, until the chip reaches its limit.
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So, okay. Right. So, if Z68 is exactly
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the same as P67, then what's going on here? So, let's
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talk about the other important feature of these new Core i processors, and that
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is their onboard graphics. So, there are a few different kinds of onboard
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graphics built into these chips. The K series chips actually have the highest
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end onboard graphics, which is pretty funny because uh no
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onboard graphics on P67. So on the
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platform where you can actually overclock these K series chips, you have
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no support for onboard video. Uh here we
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have onboard video enabled, but we
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actually can overclock the chip. So you have the best possible graphics core on
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the one that is only supported on the one where you can't overclock it and it
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has the overclock. So here we have onboard graphics enabled. That is the
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difference between Z68 and P67. It has
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sort of the best of both worlds, but it isn't out yet. So these ones don't have
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quite as powerful an onboard graphics card. So same thing here. No onboard
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graphics supported. Here it's supported. Here it's supported. And same thing
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here. These ones have the lowest end onboard graphics and here is no and here
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is okay. So that is the difference between all these different chips and
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all these different chipsets. So in summary, if you are not using onboard
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graphics and you are overclocking, then your choice is going to be a K series
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processor and a P67 motherboard. If you
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want to use onboard graphics and you don't really care quite as much about
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performance, you do not need a K series processor, you can get either one of
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these and an H67 motherboard. If you want the best of both worlds, I guess
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you'll just have to wait until Z68
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launches at some point in the future.
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Don't forget to subscribe to Linus Tech Tips for more unboxings, reviews, and
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other videos about computers and whatnot.