Joined Jul 16, Messages 0. I want to overclock my i3 a bit. I know the only way is to overclock via blck but I'm not sure if its safe. Checking on google I can't find too much info. My motherboard seems to think its ok as it has an option for auto overclocking which sets it to mhz. Others say it will kill all your components but is there any proof of this or just people guessing. You may have seen a few posts dotted around the internet claiming that BCLK overclocking will kill your CPU, well according to Asus and Gigabyte, this is not the case, and they have no idea why these things are being said.
They also went on to say that in the months leading up to the Sandy Bridge launch, they tested hundreds of CPUs, but they had a very low failure rate, considering the abuse that they were subjected to. Also if you start off with a higher temperature it is very hard to test stability, as you will probably be more unstable than if you used a lower VCore. Also under LN2 higher vcore might not yield a higher clock, as it will add more heat which can have an opposite effect.
So while at 1. I should take a second and note that Ivy Bridge is an extremely tough CPU, it is very hard to kill, however you can kill it if you go above 1. Ivy Bridge also seems to be more resilient to degradation than Sandy Bridge was, however the heat produced by the CPU can cause degradations when above what Intel recommends. Ivy Bridge also shows a lot of power increase due to frequency alone as well. You can see this in the graph below which represents a K with a fixed voltage of 1.
What is increasing to increase the power is the current, you cannot control the current, but you can control the frequency and voltage. The Science behind the 22nm 3D Transistor and how it can help us overclock!
So let me confuse you a bit and then unconfused you by simplifying everything. When we reach the 22nm size, we are dealing with quantum physics, and when we do this we can talk about the Hinesburg uncertainty principle, which basically states we cannot know where the electron will be at a certain point. That means that if the electron is outside of where it should be, then we have higher leakage. There is an equation where temperature and leakage are related, and while it is pretty complex, it does allow us to analyze certain points easily.
This has been true for almost all microprocessors, however on Ivy Bridge it is easy to see. The power input to the CPU will be reflective of the leakage, lower input power can be because of lower the wasted power and thus lower leakage, and the temperature we put on the CPU will be the temperature. We will then do this at another voltage with a higher frequency and see if the trend is affected. We can see that not only is the temperature decrease having a great effect on the power consumption representative of leakage , but also an exponential one, as at around C on both runs we see a leveling off of the power consumption.
However as the temperature rises the increase in power is much more than it is when the temperature is lower. This confirms that the leakage on this CPU is very heavy, we can also see that the leakage is being decreased exponentially as we decrease the temperature. So how can this help me OC? Well keep this in mind, for every degree you can reduce the temperature of Ivy you are decreasing the leakage at a faster rate than at the degree above it, when you do this you are increasing your opportunity for higher frequency at a much faster rate.
At around C this effect subsides, so phase change would be a point at which the power scaling starts to end. Preface to OC: Before you start overclocking it is important to know what type of memory and cooling you have, first you want to OC the CPU and then the memory separately as to not cause issues which are harder to pinpoint.
After you change each setting you should use a stability test such as Prime95 or IBT to test for stability before going up another notch. With Ivy Bridge, you want to slowly increase the VCore as temperatures will hurt your max OC much more than voltage can stabilize it. I would go one multiplier at a time sticking to my voltage ranges in the graph below. However I do not want to show that shot as people might not always read stuff, but 5 GHz at 1. You should try to fall under these voltage ranges or slightly above to stabilize your OC, these are the recommended voltages per frequency, however the CPU I used is very good it seems, so you might need more voltage than I did.
With just increasing the multiplier you can increase the clock speeds of the CPU up to about 4. If you want a set MHz even base clock it is best to set the base clock to If you want the best results you should disable power saving options like I have below, however if you want the CPU frequency to drop under idle conditions, you should leave them enabled.
Terms of Use. Show Full Site. All rights reserved. Log in Don't have an account? Let's start at the very beginning. Overclocking, a term which you've probably heard used by enthusiasts and high-end system builders, involves running a hardware component at a greater speed than it was originally designed for.
The process is applicable to various components, but this guide will focus specifically on what's certain to be a popular core component of many upcoming PCs: Intel Sandy Bridge CPUs. Launched in January and marketed as the second-generation Core processor family, the Sandy Bridge chip introduces a new architecture, new supporting chipsets and a change in overclocking methodology.
First and foremost, out of the numerous desktop Sandy Bridge processors available at launch, only two - the Core i7 K and Core i5 K - are ideal for heavy overclocking. Identified as "unlocked" processors by the K suffix, both parts warrant a small price premium over the rest of the fixed-multiplier range.
If you're the owner of a non-K part, don't worry, there is still a small amount of overclocking wiggle room available, and that topic will be covered a little later in the guide. Looking at the complete desktop range, the choice for overclockers is made easy via the differentiator in the last column; locked or unlocked. From then on, choosing between the Core i7 K and Core i5 K will be down to individual preference - the chips are separated by Hyper-Threading support, and the quad-core, octo-thread i7 K will appeal to users whose programs have a heavily-threaded workload.
Similar results should be achievable on other platforms with the same processor, but please note that your mileage may vary.
If you can make a processor quicker than its out-of-box state, is there any reason why you shouldn't? Traditionally speaking, overclocking was used as a means to make a cheap processor perform like a premium one. With Intel's Sandy Bridge range, that's no longer the case - the cheaper models are all multiplier locked and have very limited overclocking potential.
What you're left with are two high-end parts that are already lightning-quick and can be pushed further by enthusiasts. At this end of the scale, there's often little need to gain additional speed and doing so can introduce a few problems.
Overclocking your components may void your warranty and reduce the lifespan of your components. With that mind, it's important to ensure you're prepared with many of the overclocking prerequisites.
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