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It is not a secret that it is going to get easier to overclock future K-versions of Intel Core i5 and Core i7 "Haswell" microprocessors because of variable DMICLK/BCLK [base clock] coarse ratios. Therefore, it is not surprising that professional overclockers have already started to test the new chips in a bid to set-up clock-speed records. While no actual records have been set yet, Core i “Haswell” chips have already hit 7GHz core frequency.

Haswell Hits 7.012GHz Ahead of Launch

Journalists from Ocaholic web-site have discovered a record in the CPU-Z database that an unnamed overclocker had managed to boost the speed of an Intel Core i7-4770K microprocessor from 3.50GHz to whopping 7012.8MHz (91.07MHz BCLK*77). The overclocker used Asus Maximus VI Extreme Edition mainboard based on Intel Z87 core-logic. While the utility claims that the core voltage of the chip was upped to unprecedented 2.56V, it should rather be considered as a software bug, than a miracle since Core i-series 3000-family “Ivy Bridge” chips fail at 2.0V.

Results submitted to CPU-Z database cannot be cheated, but they also cannot be tracked down to find out a particular person. It is unknown what kind of cooling system did the anonymous overclocker use to overclock the Haswell chip by two times over its default frequency. One thing is clear, though: Intel Haswell seems to be very capable of reaching high clock-speeds, even early in its lifecycle.

Better Overclocking

Intel Core "Haswell" desktop platform is going to offer unconventional flexibility when it comes to boosting performance. Core i "Haswell" chips will feature more "knobs" for relevant frequency and voltage domains of the chip [compared to today’s products] as well as higher core ratios for those, who want to set-up clock-speed records using extreme cooling methods like liquid nitrogen. The main improvement of Haswell platform over current Ivy Bridge and Sandy Bridge will be support for variable DMICLK/BCLK [base clock] coarse ratios supported currently only by the high-end desktop (HEDT) LGA2011 platform.

Nowadays there is virtually one safe way of overclocking Intel Core i-series K-family LGA1155 microprocessors with unlocked multiplier: by adjusting the latter, which generally means poor frequency granularity. When processor system bus is overclocked, other busses within a PC also change clock-speed (since BCLK ratio is locked) which usually causes errors. Meanwhile, Intel Core Extreme LGA2011 platforms support various BCLK, e.g., 125MHz and 166MHz, in addition to default 100MHz, which allows to play with both multiplier and bus speed without overclocking of other components (like input/output controllers, PCI Express bus and so on).

With Core i7 "Haswell" K-series LG1150 central processing units, Intel will bring variable BCLK coarse ratios to the mainstream platforms, which will provide more flexibility to overclockers. Intel platform will still not allow independent clocking of processor bus and other components, but one can be rest assured that for enthusiasts Haswell may provide more than existing chips.

Intel did not comment on the news-story.

Tags: Intel, Haswell, 22nm, Core, LGA1150, LGA2011, Sandy Bridge, Ivy Bridge


Comments currently: 18
Discussion started: 05/03/13 07:31:57 PM
Latest comment: 05/18/13 06:35:45 PM
Expand all threads | Collapse all threads


Apparently it suffered china syndrome.
1 1 [Posted by: linuxlowdown  | Date: 05/03/13 07:31:57 PM]

As you can see from this slightly more in-depth article, 2.65v must have been a mistake as you can hit 6.2GHz on just 1.2v. The memory overclock is just as impressive.

Plus for those that were wondering this was gone on a ASUS Maximus VI*Extreme Edition.
1 2 [Posted by: loadwick  | Date: 05/03/13 11:47:27 PM]

Also, 5GHz on just 1.008v which is simply stunning!!
1 2 [Posted by: loadwick  | Date: 05/04/13 12:04:42 AM]
- collapse thread

More so than your girlfriend? Probably.
1 2 [Posted by: linuxlowdown  | Date: 05/05/13 06:10:28 AM]
That doesn't mean anything considering voltage is only one part of the equation. Did you forget about amperage?
2 0 [Posted by: mmstick  | Date: 05/05/13 08:31:28 PM]

This all because Haswell is only 5-11% better than Ivy Bridge in performance. Guess how many Haswell chippies will OC to 7 GHz. Not many and only on LN2 for a few seconds before they go POOF.
4 4 [Posted by: beenthere  | Date: 05/04/13 11:11:49 AM]

If Intel would just strip out that useless integrated graphics, and replace it with a few extra CPU cores, then high end gamers would be much more excited, but Intel and its MBA management just appear to be in marketing mode, trying to shove mediocre graphics down everybody's throat! The one area where Intel leads, CPUs paired with Nvidia's or AMD's descrte graphics, and Intel still pushes its integrated mess!
4 1 [Posted by: BigChiefRunAmok  | Date: 05/04/13 01:25:48 PM]
- collapse thread

Indeed, what a disappointment that performance has essentially plateaued for several years, chip prices remain high, and all effort is in the direction of power reduction and integrated GPUs.

That is fine, but would it kill Intel to leave off the GPU and include an extra four cores as an option? Years ago, it was assumed that frequency scaling would give way to increasing core count, but that seems to have leveled off at four.
2 0 [Posted by: x  | Date: 05/04/13 05:15:21 PM]
Yep, it should just outsource the work to Nvidia or AMD graphics, like it always did.
2 0 [Posted by: linuxlowdown  | Date: 05/04/13 05:46:43 PM]
the issue is that you dont seem to realize that at this point more cores won't serve anything. Most programs already don't make use if an i7 full capabilities so for gamers having 8 cores is totally irrelevant. 4 GOOD AND POWERFUL cores however are much better.
0 0 [Posted by: Mathias Chartier  | Date: 05/18/13 06:35:45 PM]

2.56v ? That can't be right...
There is no mobo out there that can supply that kind of voltage, and besides, at that voltage the capacitors around the CPU socket would simply blow up...
0 0 [Posted by: TAViX  | Date: 05/04/13 07:01:04 PM]
- collapse thread

show the post
0 3 [Posted by: Jared Huffman  | Date: 05/05/13 08:48:14 PM]

Not entirely sure why I would get marked down for linking people to more information??

Anyway, TAViX things have changed a lot I agreed but I used to put 2.7v through my Pentium D 820:
1 2 [Posted by: loadwick  | Date: 05/04/13 11:59:24 PM]
- collapse thread

Man, that was 6-7 years ago. 90nm vs 22nm ... lol
2 0 [Posted by: TAViX  | Date: 05/05/13 06:45:52 AM]
show the post
0 3 [Posted by: loadwick  | Date: 05/05/13 10:58:30 AM]
show the post
0 3 [Posted by: loadwick  | Date: 05/05/13 11:07:48 AM]

With all the hype and buzz lately about mr. Haswell I think Intel is pretty desperate...
3 2 [Posted by: Rares  | Date: 05/05/13 08:43:13 PM]
- collapse thread

Desperation exaggeration and the battle for misleading advertising Intel inside continues.
3 0 [Posted by: Urhu  | Date: 05/06/13 11:06:24 PM]


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