Tony Posted January 9, 2015 Report Share Posted January 9, 2015 Can't say i really understand why this increases the running speed but seemingly it does Quote Link to comment Share on other sites More sharing options...
phipck Posted January 9, 2015 Report Share Posted January 9, 2015 good god, how old is that video!? liquid nitrogen has been used in competitive overclocking for a few years now. The basics are that as you run a chip faster than its rated clock speed (overclocking) it produces more heat, this leads to errors and an unstable processor. To some degree reducing the heat returns the stability and gives more overhead for increased overclocking. There is however an inevitable limit to clock speed much like engine rpm, there are many things you can do to get closer to that higher speed and improve stability but there will always be a limit. http://youtu.be/goRB91SR-gY Quote Link to comment Share on other sites More sharing options...
Tony Posted January 9, 2015 Author Report Share Posted January 9, 2015 Similar process so what changed assuming the vid i showed was old..... Is it the modern chip -V- the older chip? Quote Link to comment Share on other sites More sharing options...
phipck Posted January 9, 2015 Report Share Posted January 9, 2015 a range of things have changed. Firstly the technique has been honed over the years that these guys have been playing, so the introduction of the coolant into the system is gradual so that it does shock the components, obviously this would cause problems. But also improvements in motherboard design, manufacturers know that guys are doing this kind of thing so have designed tighter and more feature rich motherboards to cater for this kind of competition. Having accurate and reliable voltage is essential and being able to monitor those readings live and accurately is essential. Plus having processors which run cooler natively can all contribute to achieving much higher overclocks. Its like building a race engine from a mainstream engine, you need to pick a worthy starting block in the first place then learn it inside out before raising its output. Quote Link to comment Share on other sites More sharing options...
Tony Posted January 10, 2015 Author Report Share Posted January 10, 2015 Very interesting thanks for the reply. Quote Link to comment Share on other sites More sharing options...
Funky Posted January 12, 2015 Report Share Posted January 12, 2015 Intel or whoever will make a run of chips, the best ones (ones that can run at higher clocks) will get sold as high end products at a much higher price.. The slower ones will get sold as mainstream, and so on. This is usually called binning. Quite quickly they perfect this process and more and more are able to run the higher speeds. However they still need to sell to the low end and mainstream buyers. So enthusiasts can buy a cheaper mid range CPU and overclock it to get the performance of the really expensive ones. Things have got a bit different over the last few years because Intel have been dominating the market so have changed things slightly and forced us to part with a bit bit more cash for the fun of overclocking. The principle is still the same though. My Intel CPU is rated to run at 3.5GHz, with a bit more voltage I can make it run at 4.6Ghz. Some people with really good (lucky) chips may be able to push theirs to 4.8GHz or more. But as the voltage and speed is increased so is the heat. I have a water cooling set up, it's basically the same as a car engine cooling. A water block, a reservoir, a pump and a radiator with fans. When overclocking a CPU you get to a point where you start to need more and more voltage to make the next jump in clockspeed. So for 24/7 use mine is clocked at 4.5GHz to keep the voltage down, and so less heat equals less fan noise. Hope this explains why and how it started. My rig Quote Link to comment Share on other sites More sharing options...
Tony Posted January 13, 2015 Author Report Share Posted January 13, 2015 Space station Quote Link to comment Share on other sites More sharing options...
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