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Intel Turbo Boost Explanation & Windows Gadget Linus Tech Tips

2009-12-03
so we're going to be looking at something pretty cool today from Intel it's not a new product but it is a new software application that they've just released it is a Windows gadget which basically means it's a little application that runs either in the windows sidebar which is over here on the right of side of the cameras reach that's in Windows Vista or on windows 7 you can actually move them around wherever you want so it's the Intel turbo boost gadgets you can see right here this is an Intel Core i7 Xtreme 965 processor 3.2 gigahertz there's nothing in the turbo boost bar right now now our CPU temperatures are around 50 degrees which is a very comfortable CPU temperature maybe a little high for the CPU but we're going to go create an artificial workload and I'm going to show you what the turbo boost gadget does so here is the workload we've created a 1 thread so that means it is a CPU workload that only takes advantage of one CPU out of this quad core so something like a game or an older application might only make use of a single thread now we're going to run it on CPU 1 which is what a single threaded application would typically run on here we go now if you just cruise right on over here you can see that poor 0 to the left to the left everything you own in a box to the most yea core 0 right there is running at 70 degrees and all the other cores are much cooler that's because this is a single threaded application now if you go over to the turbo boost widget that is all sorry it's a gadget-gadget not a widget it is 3.47 gigahertz now and the blue bar is all the way to the top so that's a 3.2 gigahertz processor all the way up to 3.4 7 gigahertz now if I change my workload so if I run a 4 threaded workload and if I change it around so that I assign it to any CPU it wants to be on it if I click the right thing it goes a lot better okay so CPU affinity run on any CPU torture test and run we can go back over to my core temp monitoring you can see that all CPUs are now being stressed and turbo boost only goes up to three point three three gigahertz that's because it's over clocking all four course now this is an older i7 CPU and the newer i5 and i7 is on socket 1156 actually have better turbo boost that can provide up to a twenty percent performance improvement according to the hardware connects review on these CPUs so this one that goes up a couple of speed bins one for our multi-threaded application and to speed bins for a single threaded application whereas the i7 860 and 870 can go up to five speed bins for a single threaded application with the i5 750 going up for speed bim's for a single threaded application so thank you for checking out my - tech tips blog video on the Intel turbo boost gadget widget
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