Gadgetory

hyper-threading it misleads so many people who mistake it to mean double the physical core count as in if an i7 has four cores and hyper-threading it has eight effective course right I mean even hardware monitor sees eight threads in so do most games so why aren't we seeing double the compute power because hyper threading doesn't magically increase core count that's why my i7 6700 K still has 4 physical cores period the logical core count increases but that in terms of what we physically see if we study the die of the CPU would be as far as it goes one type earth reading explained in four minutes or less minute science hyper-threading is simply a proprietary multi-threading process by which adept schedulers interact with compute data in a more efficient way to parallelize processes in simple terms it allows the cpu scheduler to more appropriately allocate data to be processed by logical cores two of which comprise a single physical core logical cores are a computer's way of replicating certain aspects of a CPUs architecture by implementing hyper threading on a single core two logical cores are detected by a modern operating system and data is streamlined in such a way to benefit from this duplication when large chunks of information are fed down a pipeline the scheduler in charge will more appropriately divide data between the two logical cores in an effort to maximize productivity so here's the trick since only one core governs both logical cores only one pipeline at a time can send information through to be processed you would need two physical cores to process data simultaneously I make that very clear right here the catch is with the scheduler now seeing a fork in the road it can hunt for the next data stream in the sequence for lc2 while sending information down LC 1 by the time LC 2 data reaches the process point LC 1 data has already been executed in a scenario without hyper-threading data won't always be prepared in time these animations happen almost instantaneously in the real world but if information isn't prepared by the scheduler quick enough the pressures on because only one logical Corps exists per physical core the scheduler can't efficiently prepare data while it's sending data resulting in delays bottlenecks and even noticeable lag watch this video for a visual representation of that so hyper-threading doesn't increase core count it just tricks the scheduler into thinking that the physical core in question has twice its architectural pipelines a core i5 6400 has four physical cores which can all process information simultaneously but in the event that too much information is being fed to all four pipelines things can slow down and the scheduler can be overloaded with information waiting to be processed but in the case of the core i7 6700 K the same number of physical cores exists only with the added benefit of a more efficient scheduler which appropriately divides reorders and sorts information down to logical cores if the data stream is light then both processors will compute about on or with each other and hyper-threading will go unneeded however in the case of heavy workloads hyper-threading can come in very handy it reduces the number of stalls and increases overall efficiency which is why CPUs equipped with hyper-threading generally sell for a higher price than their non hyper-threaded counterparts all other things equal so the next time you're on the hunt for a new processor ask yourself whether or not your personal workload will benefit from hyper-threading assuming you're choosing between an i5 without it and an i7 with it all you do is play video games in your PC this video right here will answer that question for you you like this video be sure to give it a thumbs up give it a thumbs down if you feel the complete opposite and subscribe if you haven't already for more interesting videos like this one this is science studio thanks for learning this you