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IDF Sandybridge overclocking - 4.9Ghz

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That is with the stock cooler also folks. 5+ might be possible with the best batches with aftermarket air cooling.
 
That "stock" cooler looks like an upgraded version of the one you get for the i7-980X. As such it's going to about as good as any aftermarket single fan cooler.

Would be nice if they included that with the cpu, but I'm not sure they will.
 
I wouldn't bother putting a cooler with it. people are paying a premium to OC it, in almost every case they would just ditch the stock cooler anyway.
 
I have heard alot that these won't be fun to O/C. To some it may be true .

I see this as a whole new type of O/C experiance. If you don't add a discrete Card . Overclocking both the Cpu and gpu for best performance overall is going to br challenging. Because the l3 cache overclocks with the cpu You up the GPU performance at the same time Get both Cpu and GPU performance balanced at High clocks could be very rewarding and fun . GPU is O/Cable also . Looks to be a good challenge , Seeing how Anand showed the 12 eu unit or the G2 . It didn't have turbo on. So it remains to be seen what both the gpu and cpu prtform like when at Stock with turbo on than @4.9 ghz. I hope the IGP will O/C to 1.5ghz This IGP requires way liters drivers than the HDigp because the way intel designed this IGP. Intel has built the perfect Home workstation with this cpu/gpu marriage. All 12 shaders or core or what ever ya want to call the eu . Are strictly used for graphics only . Intel really didn't go into the compute part but did touch on it.
 
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for those of us who've spent days/weeks/months of our lives oc'ing in the past it will certainly be frustrating to not need that knowledge this time around (at least with intel), but at least we can make up for by taking all that extra time to drink lots and lots of beer!
 
OCGuy said:
Wow. Two weeks ago people were saying that you can't even overclock SB, and now I may possibly have a 4.5ghz air-cooled SB???

I don't think I will be able to hand them my money fast enough at launch.
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A-frickin'-men.

This is looking a lot better than I initially thought. I think my major dilemma is going to be considering if the 2600K is worth it over the 2500K.
 
IntelUser2000 said:
They didn't say it was slower, they said if they didn't implement that it could have been slower. It's kinda like saying if the Core i7 didn't have L3 cache it would have been slower than Penryn, but there is no Core i7 that lacks L3 cache, so it doesn't matter.
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Yes you're right. Point I was making is that, IIRC, that was going to be a continuing trend as they shrank further, but they obviously couldn't keep increasing the pressure on the channel indefinitely.
 
Not familiar with the K series or even the SB architecture at this point. Are these the CPUs with IGPs? Or is the K version without?
 
Keysplayr said:
Not familiar with the K series or even the SB architecture at this point. Are these the CPUs with IGPs? Or is the K version without?
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K = unlocked multiplier (makes overclocking easier/possible)

LGA1155 SB has integrated GPU, LGA2011 SB will not.

Pretty much everything discussed to date regarding SB is regarding the LGA1155 variant which has IGP.

Adding a discreet GPU to SB rig will disable the IGP (no hybrid modes discussed at this time).

Ability to use IGP is also dependent on mobo chipset, there is one chipset (P67?) that will explicitly not support the IGP. So any P67 mobos will be presumed to be for discreet GPU rigs.

Caveat: not sure how much of the above is based on unverified rumor versus official fact...it is all kinda running together at this stage.
 
It seems that SB IGP goesn't share the Driver stack with other intel processors not even HD. It has its own very small Driver stack . Intel says drivers are very narrow and light for SB because of all the fix function units in the G series igp . Very cool.
 
bryanW1995 said:
for those of us who've spent days/weeks/months of our lives oc'ing in the past it will certainly be frustrating to not need that knowledge this time around (at least with intel), but at least we can make up for by taking all that extra time to drink lots and lots of beer!
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This is a whole differant experience. It may not be so enjoyable for those who feel the IGP power just isn't there won't hop aboard till ivy bridge.

These are really nice units . But I haven't the faintest idea hhow they perform once you start O/C . The real sleeper here is the fact that L3 O/C with the cpu . Now The IGP runs off the L3 and that is going to be an unknown. Also everyone wants to talk about the O/Cs of the cpu . Well this IGP is made from the exact same process. I am more excited to see how much the IGP o/c . I am expecting 1.5 ghz. Anything less be hugh dissapointment. If I can get 1.6 ghz I happy. If I get dare i say 1.7 ghz I be in over clock heaven with the cpu running 5.ghz. The very bext part is the Money this kind of GPU power on SoC brings is the money saved on watercooling . Now I water cool 2 parts with one block. NOW the best designed blocks will be seen and desired. Know friend this is a whole new kind of O/Cing and its going to be fun to be at the forfront of this experience.
 
The only interest I have the SB GPU is that its there, and for moving the CPU/mobo/RAM into my server once Haswell comes out and I upgrade the desktop.
 
IntelUser2000 said:
I would say the 3 biggest contributors are cache changes, additional load unit, and the uop cache. Bigger OoO buffers and branch prediction would help too, but maybe not as much. They probably lowered instruction latency in overall, but again a small gain.
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I have to agree. The cache changes, including increased bandwidth and lower latency on L3 combined with the new L0 cache make a difference, along with the additional load unit.

Just imagine what IPC improvement SB will see when apps and games are fully optimized to take advantage of AVX.

ElFenix said:
don't they always show off a huge overclock? i'll bet they had P4 chips running near that way back when.
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I bet a 3-3.5Ghz Sandy Bridge would still clown a P4 at 5Ghz in performance 😛.

P4 was specifically designed for high clock speeds. Sandy Bridge was not, so to me seeing SB running at 4.9GHz on air is impressive, even if it was a cherry-picked sample.
 
The original Core 2's performed 90% faster per clock than the Prescott based Pentium 4. With Sandy Bridge even the LV chips should threaten the 5GHz Pentium 4. With multi-threading its going to reach that with the ULV chips. Of course this is all per core comparisons. 🙂
 
I don't think a 10Ghz Pentium 4 processor could top a Sandy Bridge 😛
Look at it this way:
Took a 5.2Ghz Pentium 4 to beat a K8 Athlon at 2.6Ghz
Which would be equal to about a ~2.3Ghz 65nm Core 2 Duo
Which would probably be equal to a 1.66Ghz 32nm Clarkdale
So if the Sandy Bridge processors will ship at 3Ghz and above--
 
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what are the main differences between 1155 and 2011? will 2011 also have a gpu? and why is 2011 so much bigger than even 1366?
 
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s2011 has an extra memory channel (quad channel), AFAIK no GPU. It also moves the PCI-E controller on die (since it was on the NB before, and AFAIK thats gone) and thats 40 lanes of PCI-E 3.0). Those account for the vast majority of new pins.
 
I don't think a 10Ghz Pentium 4 processor could top a Sandy Bridge 😛
Look at it this way:
Took a 5.2Ghz Pentium 4 to beat a K8 Athlon at 2.6Ghz
Which would be equal to about a ~2.3Ghz 65nm Core 2 Duo
Which would probably be equal to a 1.66Ghz 32nm Clarkdale
So if the Sandy Bridge processors will ship at 3Ghz and above--
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If you actually work it out, just going by your numbers a 3GHz Clarkdale would theoretically be slightly beat out by a 10GHz P4, on single-threaded performance.
 
Nehalem using Bloomfield and Lynnfield core is ~10% faster in single thread than Penryn and with Clarkdale its less than 5%.

Core 2: 2x clock P4
Core 2: 45nm-2.2x clock P4
Core i7: 2.5x clock P4
2nd gen Core i7: 3-3.3x clock P4
 
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