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Gigabyte X470 Gaming 7 VRM Analysis | Buildzoid

2018-04-19
hey guys builds weed from actually hardcore overclocking here and today we're gonna be taking a look at the gigabyte x4 70 horas gaming 7 Wi-Fi for the rise in 2000 series 2 CPUs as well technically it can also run the AP use and it can also run the 1000 series but you should really only be considering this board for like the 2000 series I guess if you're on a bad 1000 series board upgrading to this would not actually be a bad idea anyway before we get into the vrm details here I'm just gonna point out some overclocking features that this board has note that it has many before that this video is brought to you by thermal takes view 37 case the view 37 focuses on highlighting custom PC builds with its full panoramic window and tinted front acrylic and our thermal testing the view 37 performed reasonably well when considering its looks focused build which is partly thanks to the airflow design and the removal of a bottom power supply shroud for a balance of looks and performance check the link in the description below for the view 37 there's this Auto OC button which you should never use because it's probably gonna load up some awful really like miserable settings that are either too much voltage or not stable because I've never seen one of these actually work well but the other OC feature like the actually useful OC features you do get is a postcode down here and then these two switches there's unfortunately no power button no reset no retry and no safe boot on this motherboard which makes me really really sad but for for most users those are admittedly kind of unnecessary where the whereas these two are actually really really handy so these two switches here is one is BIOS mode so basically this being a gigabyte motherboard obviously has a has a dual BIOS implementation you have a main BIOS and a backup files and basically the BIOS mode switch allows you to go between single BIOS and dual BIOS modes and the reason why you'd want to go between single BIOS and dual BIOS is because this sometimes on some Gigot well yeah on some gigabyte the board's dual BIOS modes tends to go derp it tends to be a little bit buggy it tends to have issues it sometimes won't update the secondary BIOS you know you update your primary and it just refuses to update the backup so if you ever screw up your main BIOS oh you're gonna have to do a BIOS update because it'll go to the backup and the backup is gonna be on like a BIOS version that's way too damn old other issues include is say you screw up your memory settings and you fail to boot a few times in a row the backup BIOS will randomly decide that it will overwrite your primary and you know that's just like it gets kind of old if you're running you know if you're trying to do some overclocking that isn't that that is really tripping up the dual BIOS implementation because it yeah it sometimes just does silly things so you can put the board into single BIOS mode and what single BIOS mode basically does is you can be either on this chip or on this chip the board will not try to automatically recover for you and so what do you do if you screw up while you're in in single BIOS mode well you have this switch right here which allows you to choose which biles so like that is a straight-up BIOS which so yeah this is a this is a handy feature to have like the normally I'd be most boards where it's like I think for the bare minimum implementation of dual BIOS you really should just have a switch and two BIOS chips gigabyte tends to do the opposite they have two BIOS chips and a bunch of fancy software and no switches which you know as I said tends to kind sometimes get kind of infuriating because the dual BIOS mode on some other boards tends to be a little bit less than intelligent so yeah that that's a nice feature to have and then there's the postcode there's no reset like there is there's no retry safe boot power reset or anything clear CMOS is done by jumper down here that's not the worst way to do it honestly like I mean I'd prefer a button but hey at least it's it's just a jumper and it's down here easily and accessible enough you do get some debug quick debug LEDs right here but I don't see why you'd use them when you do have the post code so yeah that pretty much covers the quality of life features for overclockers on this motherboard I'd really like that power button as well as the reset at the very least but at least there's the you know manual bios controls which I like I do appreciate that because I have run into issues with gigabytes dual BIOS implementation of implementations a few times nothing as serious as like outright breaking a board but I'd you know not being able to run the board because the well wasting time waiting for the BIOS to flash over because the primary is a little bit screwed up and the backup decides to just randomly update it is just not you know the most pleasant experience so I do appreciate that they put the BIOS which is on this one now then let's get to the V RMS starting with the ones around the CPU socket which are the most important ones this L shape right here which I'm not nailing this L shape right here is your V core v RM and then next to it you find the SOC right here so that powers the a GPU and the SOC portion so I GPU on the AP use and for the Rison non APU CPUs this powers the memory controller and the u.s. like some of the USB ports the PCIe and all of that this powers the cores so yeah both of these are controlled by the International rectifier ir35 2:01 here and this time around the three five two zero one is configured in a 5 + 2 phase configuration this does technically look like a 1 2 3 4 5 6 7 8 9 10 phase and it is marketed as a 10 phase and that's actually completely fine because gigabyte does actually have a doubling scheme you have one doubler up here and then if you go on to the back of the board you get a bunch of them along the back here so you have 5 doublers toad and these are the dumb kind of doubler these are international rectifier $35.99 s and these literally just pass the PWM signal between two phases but at least you don't have you know at least you won't ever have two phases turning on at the same time like some of the not really doubled the doubling schemes that a lot of other motherboard manufacturers like to use especially on low-end motherboards so this this is this is a 10 phase by the like you know most basic definition of what a 10 phase would be this is a 10 phase it's not as good as if you had a real like you know smart or doubler or just a straight-up 10 plus 2 phase voltage controller but it is a 10 phase gigabyte can call this a 10 phase that's fine and then the SOC BRM is just a straight-up plus 2 there's no doublers for that the power components themselves are while the MOSFETs in this case our international rectifier power stages for the vcore vrm you are looking at international rectifier ir35 53s gigabytes favorite 40 amp power stage like there is so many motherboards they put these on but it's just like literally must have some kind of crazy discount on these because you like gigabyte uses these everywhere once you get past a certain sort of price point for their motherboards there's motherboards where they use these for memory power which is just completely ridiculous because it's a 40 amp power stage but nonetheless you know perfectly good part it reaches peak efficiency at 12.5 amps output and that's kind of a problem with this 10 phase right here because well if you're on like a 6 core or a quad core or you're just not overclocking this vrm will have to shut down partially like most of this vrm should not be running if you're running at stock settings because it's just gonna be horrific ly inefficient if you're running like if you're pushing like 5 amps through one of these power stages you're gonna have like the bulk of the power loss across one of these power stages at that point is gonna be the act of turning the power stage on and off like the Drive circuit the fir-tree itself will be the bulk of your power loss and so basically for light load efficiency this thing should drop phases like turn off basically like if you're on a quad core it should just turn off all of those or orb like this I'm really not sure which order they're wired up in but basically this thing should drop down all the way to like a four phase four idle or or a quad core maxed out because they're not that power-hungry for a six core this should be running bit low around eight phase-- like six to eight phase mode and then if you're on an eight core 2000 series and overclocking it should actually go into the full 10 phase mode but otherwise this thing should be just disabling phases because it's just burnt wasting power otherwise on just driving them so that's a kind of an interesting issue with having a big multi-phase vrm but obviously the ir35 to zero on does support that functionality I'm also pretty sure that gigabyte BIOS actually allows you to enable and disable like the number of phases that the board will run so there should be especially for like this class of board there should be a manual override to force the board into 10 phase mode if you're if you don't care about vrm efficiency and just want the you know best voltage regulation which you obviously get with more phases rather than top efficiency anyway let's talk actual power capabilities so gigabyte has a ridiculous heat well a real heatsink for their vrm it's not really that ridiculous for this this is this is a real heatsink that's nice to see but they so they do have the real heatsink for this VRM but honestly it might not even be that necessary because rise in 2000 series 8 core is a little bit more power-hungry than its predecessor you know the 1000 series but you're still looking at for the 8 core right if you go 8 core one point for 2 volts and 4 point 2 gigahertz or you know 4.3 you're gonna be looking at about a hundred and 25 amps of current coming out of the VRM which falls right within that peak efficiency figured it makes perfect sense why gigabyte went with this ten phase right here because they're gonna nail that if you're in on an eight-core isin doing around four point two to four point four with max out v core for that you're gonna be looking at about 15 watts of heat dissipation for the entire set of MOSFETs right here so you know that's it's nice efficiency right there that's that's actually really really solid nothing to complain about there now if you're on an eight-core first gen and you're at one point for 2 volts you'll be looking at about a hundred amps right you know I'm assuming around 4 gigahertz you're gonna be looking at around a hundred amps and that will produce about 12 watts of heat this is also technically kinda relevant for a 6 core 2000 series like that those figures right there 6 core 2000 series a slightly higher clock about 90 amps instead of a hundred so you'd still be looking at about you know 10 to 12 watts of heat now if you're on a 6 core first gen the vrm will have to start shutting down phases again for efficiency because at one point for 2 volts those and you know 4 gigahertz you're gonna be looking at about 75 amps of current output for the vrm which is just way below the efficiency floor for these power stages and you're gonna be looking at about 10 watts of heat in 10 phase mode it'll actually get more efficient if it shuts down phases and if you're on a quad-core which would be like an APU or something one point for 2 volts 4 gigahertz you're gonna be looking at about 50 amps of current draw because there's currently not a 2000 series quad core and at that point the vrm if you're running 10 phase mode it will produce 9 watts of heat which like just looks awful if the vrm drops into 4 phase mode which should be pretty much close to peak efficiency for well it'll be peak efficiency for 50 amps output if it drops into 4 phase mode it'll drop down to about 6.2 watts of heat output so basically if you want to like you should really run this motherboard with an 8 core because otherwise most of this vrm will just turn off and you're not using it so you you know what waste of waste of motherboard components if you're on something less than an eight-core on this Vic is like seriously it's not efficient like running a ten phase for these lower core counts is not efficient so yeah that's the V curve erm situation now the SOC vrm is made up of two white one last figure I forgot to mention if you had an eight-core on liquid nitrogen and we're pushing about 1.8 5 volts 5.3 gigahertz or 5.2 I you know I don't have data for what the 2000 series will actually hit in terms of frequencies on a liquid nitrogen yet 5.3 gigahertz you'd be looking at about 200 amps of current and about 30 1.2 watts of heat so there the heatsink might actually come in useful though with how Rison runs and how long benchmarks on liquid nitrogen usually last that heatsink might turn out to be unnecessary in this area of the board will probably like this entire area of the board probably ends up covered in ice if you run it on liquid nitrogen so the vrm will be sub ambient unless you're constantly running about like running a really really long benchmark over and over and over again the board will be covered in ice so yeah now the SOC vrm different current figures obviously very different this is a two-phase design right here and you do get the power stages there are international rectifier 35:56 is which is gigabytes second most favorite power stage it's a 50 amp part and well massively overkill if you're on a cpu Rison and if you're on an APU it should still be plenty powerful though I don't really like I don't think putting an APU in this board is exactly cost-effective so for a regular risin you'd be looking at about 1.2 volts - well 1.2 volts SOC voltage 20 to 30 amps of current which will produce about 2 to 2.5 watts of heat so nothing like this would get away with just past like no heatsink whatsoever and if you're on an APU you might go to like 1.25 volts because you do need to you know for the GPU runs off of that too and also the SOC might actually have an upgrade to be more voltage Torrent learnt but 1.25 volts on that and you'd be looking at about say 40 to 60 amps of current depending on what kind of you know I GPU overclock you have and if you're running the 2400 G or the 2200 G and for that you'd be looking at 4 watts to 6 well about 7 watts of heat output for the SOC VR I'm so not much so yeah this is plenty powerful enough as well like yeah that this VR M is really really solid it's not the most powerful one on X 470 but I think going over like getting anything stronger than this is probably completely unnecessary for the rise in 2000 series if you're on ambient cooling if you're on liquid nitrogen there might be some justification for a stronger vrm than this but because you know you'll be pushing like 200 amps of current through the V Corps of erm and then some higher end power stages or just more phases would actually further improve efficiency but for daily usage this this is plenty laughs this is actually overkill for most CPUs and most people's over clocks because you'd really have to hit that one point for 2 volts figure to even like get this VR I'm into the peak of the efficiency curve for these power stages so yeah great job gigabyte on on the on the V curve erm as well as the SOC interesting note about these inductors that gigabyte uses so I actually managed to get the like this is a useful part number so I managed to get the datasheet for these these are from each so a 10 yeah and that is a like these guys supply a lot of high-end inductors you find them on like AMD reference cards server boards like these are high-end and so these are rated for 125 degrees centigrade because these are inductors they run that they can tolerate stupid high temperatures similar to MOSFETs really the most temperature sensitive component in a VRM is your you know your aluminum polymer output capacitors and then the little ceramics into the RM itself though you can get those in 125 C rated versions as well you can technically get 125 rated aluminum polymers as well but those are really expensive compared to 105 C rated counterparts anyway the inductor is 125 C you're looking at a average current capability of about 61 amps so that's how much current you can push through these before they start getting steadily hotter and hotter and hotter and hotter so this is way beyond what this motherboard needs to be able to handle and for saturation current which is basically where the saturation current is 70 amps and that is the current level at which the inductor basically stops being able to like the magnetic field of the inductor stops building and it basically starts turning into a short circuit so basically if you exceed that current level the inductor like in a buck converter application that is really really bad you really don't want to hit saturation point but as we kind of covered rise in 2000 even on liquid nitrogen should not be going like it shouldn't be getting anywhere near these kinds of current figures because you'd have to be at like to get anywhere near though that the saturation or even the you know the average current capability of these inductors you'd have to be pushing like 600 amps through this VRM there is no way a Rison is pulling that not on an a core anyway so yeah these are ridiculous overkill from gigabyte but you know that's that's nice to see and they do use them on a lot of high-end boards and I guess they just have a ton of them so why not use them on this board as well the capacitors at least these I'm not sure about these these look a hell of a lot like a pack this manufacturer and their Taiwanese but all of these black you know aluminum polymers those RFP series and hg cons I don't know the hours rating because normally the F P series has like like this model name right here normally has the hour writing in it but gigabyte opted to not have that so these might be 5000 hours they might be 10,000 hours I really hope that they're not just two and a half thousand hour capacitors in black paint though that is technically possible but yeah these are amici con is a Japanese capacitor manufacturer and these are you know as good as it gets basically from other boards you won't find anything really better accept other Nicci cons for higher with higher our ratings so yeah but these should still be 5,000 or 10,000 hours rated but I can't you know find the specifics anyway that covers the CPU power situation you got some minor buck converters down here which I don't know the power levels for the MOSFETs here are on semiconductor for C tens for there the voltage controllers are rich tech RT 8 120 DS so these two control chips and I'm not sure home voltage ease what voltages these generate they should be something like VDD P as well as some of the PLL voltages so yeah but this is plently don't push that much power so I'm not worried about those for your memory power you're looking at this single-phase right here controlled by yet another RT 8 120 D and the MOSFETs used here are 4 C 10 ends in the larger package so that's actually the same MOSFET so that's on semiconductor again that's the same MOSFET is this just different packaging size and you have to you have one high side fat and two low sides so the one with the X is a low side and the end result is that this memory the RM can push six amps 1.35 volts to your four that's for four memory sticks cuz DRAM like ddr4 doesn't pull that like much power at all per stake and actually this is probably higher than what you would see at one point three five volts or even one point five or maybe even 2 volts like memory really doesn't use a lot of power and it doesn't really send its power usage doesn't even really scale with voltage so you can crank a lot of voltage into memory and its power consumption doesn't really change anyway for six amps one point three five volts you'd be looking at about point eight watts of 0.8 watts of heat for the MOSFETs right here the controller would obviously add to that overall power of a power draw figure so yeah that pretty much covers everything on this motherboard and there is a clock gen on this board I'm just not sure where it is it might be this but when looking like I can't get a particularly helpful datasheet for this chip right here and any mention I've I found of this is just that it's a clock buffer so yeah there's there's not really any details on what exactly it's capable of doing and that it and actually the only reference I found for it is referring to the PCIe Express slots so yeah but the board is capable of changing VC LK in BIOS we have tested that so yeah it's uh this thing is uh this is a solid like this is a really really solid board significant upgrade over the previous X 370 gaming seven boards and the gate while gaming seven case I mean gaming k7 from X 370 as well as the gaming five it's a significant upgrade over both of those and really this is like this is a really solid high-end AM 4x4 seventy bored like there's not really any complaints I have for it yeah it's it's it's a good board I'm kind of sad that it doesn't have the power and reset buttons but for a daily user this is quite possibly like this quite possibly would be the best choice assuming there isn't something weird going on with the BIOS so yeah physically this thing is great for like a daily system very very well balanced and and with the vrm heatsink you have you shouldn't even have to worry about like airflow at all because that this has a ton of surface area so yeah very very very solid board for like a daily build for extreme overclocking it would really depend on how the BIOS well the BIOS situation would also be very very important so yeah that's it for the video thank you for watching like share subscribe leave a comment or any questions down below if you would like to see more videos like this I have my own channel called actually hardcore overclocking and if you'd like to support what we do here with gamers Nexus where there is a patreon in shirts you can find links to those down in the description below as well as in the comment section as well that's it for the video and see you next time
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