Solved Difference between fsb and dmi Tags: CPUs DMI QPI Last response: February 15, 2010 11:40 PM in CPUs Share joy4evrr February 4, 2010 4:54:42 AM Hello, please explain me the difference between FSB / DMI / QPI More about : difference fsb dmi Best solution verndewd February 4, 2010 5:20:22 AM front side bus is a northbrige chip that isnt on the cpu http://www.siliconmadness.com/2009/08/lga-1156-nvidias-... http://en.wikipedia.org/wiki/Intel_QuickPath_Interconne... scudst0rm February 4, 2010 5:33:21 AM I'm not sure in what context your refering to DMI, but if you mean Desktop Management Interface then it is completely unrelated to FSB or QPI. FSB and QPI are channels which a CPU uses to talk to other components in your system (RAM, GPU, IOs). FSB is found on old intel chips (core2 and older) and is a shared bus that connects the CPU to the northbridge and through which all data must pass. QPI is found on the new core i* CPUs and offers a direct connection between the CPU and other components. Specifically it provides a separate channel from communication between the CPU and RAM. The problem with FSB was that it created a bottleneck for all the data going to/from the CPU. With QPI offering a dedicated path to memory it significantly increases memory bandwidth. Related resources Difference between core 2 duo and core i3 processors? - Forum Difference between core2 duo and i3 CPU - Forum Differences between Intel QPI and HT used by AMD - Forum What is the difference between changing ram frequency and changing FSB - Forum How much quicker is QPi over FSB - Forum Can't find your answer ? Ask ! Get the answer joy4evrr February 15, 2010 7:22:55 AM Best answer selected by joy4evrr. joy4evrr February 15, 2010 7:23:43 AM verndewd said:front side bus is a northbrige chip that isnt on the cpu http://www.siliconmadness.com/2009/08/lga-1156-nvidias-... http://en.wikipedia.org/wiki/Intel_QuickPath_Interconne... thank you very much for your pain to reply. was a great help verndewd February 15, 2010 11:40:12 PM glad i could help Can't find your answer ? Ask ! Publish Related resources: ForumFSB QPI ForumDMI vs QPI bus ForumRAM - FSB problems ForumWhat's the difference between motherboard FSB & CPU FSB ? ForumBig difference between 800MHz FSB and 667MHz? ForumGA-7VRXP: rev. 1.0 or 2.0? And FSB 333? ForumPerformance difference between 133/200 MHz FSB speed? ForumWill I see any difference between 400 and 533 FSB ? ForumOC T-Bird - difference between multiplier and FSB ForumAthlon XP 1600+ hangs at Verifying DMI Pool ForumHang before 'verifying dmi data' phase - didn't used to! CPU or mobo? ForumPerformance difference between various FSB :RAM ratio? ForumPlease help a newbie understand why Seasonic PSU wont turn on :( ForumDifference between Intel Core i5-520m and i7-720m ForumNeed to know difference between DDR/GDDR5 in video card More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !