The question is often asked: what is burning with a finer processors Ivy Bridge will exceed their predecessors frequency Sandy Bridge. We have therefore made some tests and aircooling liquid nitrogen to determine the overclocking potential of these new CPU for the socket LGA 1155. So what can we really expect Toshiba PA3534U-1BRS  these new processors engraved in 22 nm?

Before anything else, it is important to know that only two processors among the long list of Ivy Bridge chips are designed for overclocking. It is well on models "K" as in those of the Intel Sandy Bridge (2500K, 2550K, 2600K and 2700K). Here we have the first right in these two models, 3770k and 3570K (tested here).

K models have an unlocked multiplier, finally almost completely released because it can vary from 36X to 63X. Other family processors will settle for a slight overclocking the BCLK. The maximum bclock Ivy Bridge is slightly higher than what you might encounter on Sandy Bridge, but it is not extraordinary. We must be content with a maximum frequency of "+" or "-" 115 Mhz CPU for the best below 0 ° C. Recall that 110 Mhz bclock was very difficult to achieve on Sandy Bridge.

For this test, we used the Sony VGP-BPS14 motherboard Asus Maximus Gene V range ROG that we introduced some time ago in this article. Joking aside now and go home in the heart of the matter and see what Core i7-3770k in the belly:

Configuration used in air-cooling:

• Motherboard: Asus Maximus Gene V
• Processor: Intel Core i7 3770k
• CPU Cooling: Cooler Master 612S
• Memory: G.SKILL TridentX 2666 CL11
• SSD: Kingston HyperX 120GB
• VGA: Asus HD 7970 Direct CU II
• Power Supply: Corsair AX 1200W
• Table: Table test Dimastech
• 64-Bit Windows Seven

Overclocking AirCooling

To test the overclocking potential of our Core i7-3770k benchmark we used in wPrime 1024M. This software multithreaded stress the CPU to 100% for a period of a few minutes. We also used the software Asus Sensor Recoder (AI SUITE II) to monitor CPU temperature during wPrime 1024M.

Here are the  VGP-BPS13 screenshots temperature readings and Vcore required to pass wPrime 1024M in aircooling 4 Ghz to 4.8 Ghz.

Compared to these results, we are a little disappointed 3770k overclocking potential in aircooling because you should know that Core i7-2600K previous generation could climb from 4.8 Ghz to 5.5 Ghz. Here we could run wPrime 1024M by 5 Ghz and without risking the CPU temperature exceeds 100 ° C. Fortunately, we can see that it takes only 1.32 3770k V to be stabilized at 4.8 GHz and only 1.05 V to 4 Ghz, which allows the Cooler Master 612S to keep below 40 ° C.

Here's a little graph summarizing our results better overclocking 4 Ghz to 4.8 Ghz.

By mounting the Vcore to 1.4 V, the 3770k can reach to the VGP-BPS12 Battery frequency of 5268 MHz frequency at which the processor was just enough to make a stable CPUZ validation.

Intel will undoubtedly improve the etching process Tri-Gate 22nm as he had done with Nehalem (i7 920, ..., 975xe) through the revision C1 D0 revision.

New side ratios memory

Passion overclocking memory and bandwidth outside the norm, the Z77 platform / Ivy Bridge offers some novelty about the timing of DDR3. Taking advantage of a memory controller more swift than Sandy Bridge, Ivy Bridge will not be stable difficulty with memory overclocked to over 2800 Mhz aircooling or more 3200 MHz with a cooling system below 0 °.

Here is a screenshot of the BIOS Maximus Gene V where you can choose from no less than 17 desynchronizations memory. The Ivy Bridge can use the value bases 100 and 133 for its various memory frequencies, thus sony vgp-bps11  supports a wider range of ratios than Sandy Bridge.

Here are some screenshots within the bandwidth in MB / s and latency in ns with the overclocked DDR3 2000 Mhz to 2800 Mhz.
With hp pavilion dv6 DDR3 2800 MHz CL11 in the AIDA software is memory bandwidth reading of 25,138 MB / s with latency of 30.1 ns compared to 20,295 MB / s and 37.1 ns at 2 Ghz.

Aircooling finished laughing, let's get cold!

Core i7 3770k under liquid nitrogen

To start the game extreme overclocking of this article, here are some photos of the insulation configuration.

Configuration used in liquid nitrogen

• Motherboard: Asus Maximus Gene V
• Processor: Intel Core i7 3770k
• Cooling CPU: Bucket and 3D SSD LN2
• Memory: G.SKILL Flares (test was done before the release of TridentX)
• SSD: Kingston HyperX 120GB
• VGA: Asus HD 7970 Direct CU II
• Power Supply: Corsair AX 1200W
• Table: Table test Dimastech
• 64-Bit Windows Seven

Even if Ivy Bridge overclocking is a bit disappointing aircooling the Pavilion DV5 Battery performance "clock to clock" are on the rise compared to Sandy Bridge. These Ivy Bridge will be the greatest happiness of all extreme overclockers will fall all the world records in 2D but also in 3D a lot in the weeks to come.

Under liquid nitrogen, the difference between Ivy Bridge and Sandy Bridge is like day and night. On one side a processor that overclocks better aircooling but that only takes 100 or 200 Mhz more under cold and the other side a processor that has trouble with 5 Ghz aircooling but easily takes 6.5 LN2 Ghz ...

Since the E8600 and some Clarkdale as Core i5 670 and 655K, Intel were abominable to overclock under liquid nitrogen. That is to say, they really could not stand the cold, and when a certain negative temperature was reached, the system refused to boot. What is called the "Cold Boot Bug." Could be circumvented by booting slightly higher temperature. But the HP 484170-001 system instantly spat when reaching a certain temperature. What is called the "Cold Bug," and there could not do anything but strictly control the temperature of the bucket to the nearest degree. This cold bug was located on Sandy Bridge between -5 ° and -50 °.

With Ivy Bridge, everything is different! The cold boot bug almost disappeared, according to some reports, some CPUs are still struggling to boot below -150 °, but the cold bug itself has completely disappeared as the latest AMD processors. It is therefore possible to run it with the bucket filled and -196 ° C to probe!

Here are some screenshots of Super Pi 1M and PiFast to 6600Mhz