Gadgetory

excellent what's up guys welcome back to Pauls hardware today's video is pretty straightforward I am benchmarking the new KB Lake processors not just one but two the top two SKUs that have just launched these 7600 K which is a quad core without hyper threading and the 7700 K which is a quad core with hyper threading I'm going to be comparing them to their direct counterparts on the skylake side so the 6600 K and 6700 K I have six benchmark sets I'm going to run through three of them or more CPU workload focused and three of them or more gaming focused so let's start by going over the testbed that I'm using right here to test this all out on and this has been done in an open-air environment for the sake of expediency the motherboard I'm using is the gigabyte or SC 270x gaming seven brand new motherboard from gigabyte they're now doing or to some other boards the memory is Corsair Vengeance 2 by 8 gig kit I'm just running it at stock 2133 speed for the tests for the graphics card I'm have a gigabyte GT X 1080 extreme gaming this one is manufacturer overclocked but I'm just leaving it at the standard settings as it came out of the box from gigabytes for a CPU cooler since these CPUs don't ship with one I'm using an air max ETS t4 TB this one is nice because it has a fixed backplate once it's on there so it made it easier for me to remove it to swap the CPUs out as I was going along I also wanted something that was a decent CPU cooler you can get this one for about 35 to 50 dollars depending on where you find the price although it is a little bit more difficult to find now but NMX does have an updated version that's roughly the same I also should point out that I'm not using the stock fan that came on that cooler I'm using a scythe gentle typhoon which is a PWM optimized cooler for storage of Kingston HyperX 240 gig SSD and for power I have a Rosewell 1000 watt 80 + Platinum power supply those are all the stuff that's in there and let's quickly go over the specs for the four CPUs that I'm going to be testing I'll place them up side-by-side here so you can compare and you will find they're largely the same especially if you're looking at the ones that are in the same series so the 6600 K is 4 cores 4 threads and then the turbo frequency goes up to 3.9 gigahertz that's supposed to be just on one core but I found that on all of these I don't know if it's a motherboard or just some special magic that I have in me but they were all just running at their max turbo frequency across all the cores so go figure but pay attention to the frequencies though because that's the main differentiating factor between these CPUs the 7600 K the news KB Lake version of the 6600 K turbos up to 4.2 gigahertz so even though everything else is roughly the same across the specs it is going to be running at 300 megahertz faster out of the box and that is on all four cores at least it was during my testing also voltage for the 7600 K just for those of you who are testing these out new right now I was running out of the box at one point two nine six volts about 1.3 a little bit higher than I was expecting actually all the CPUs on this board were running a little bit higher voltage that I thought they would but fortunately most of them were okay except the 7700 K more than that just a second though the 6700 K as a fork or a thread CPU again all the specs here you should be familiar with if you've been looking at skylake processors at all the past year year and a half 4.2 gigahertz turbo on this one as compared to the 7700 k for of course eight threads 4.5 gigahertz turbo and I think that's the main selling points of this particular CPU right now 4.5 gigahertz out of the box and again it was doing that on all four cores although when I first installed it it was running at one point four one six volts which is a lot more than I would expect at least for just a CPU out of the box and it was running pretty hot at that voltage too so even though that was was about it defaulted to I manually punched in a - point 1 to 5 volt offset resulting in a about 1.3 4 volt max voltage under full load while stress-testing typical gaming load it was running at about 1.3 volts which I found was a little bit more normal but I didn't want to point that out since that was a change that I made as opposed to everything else which was running pretty much at stock frequencies but I did want to point that out since it's a change I made a different from what it was running at stock out of the box let's move into our benchmarks now starting with Cinebench r15 running on all cores so as many threads were available to the CPU as the CPU has 7600 K squared 681 he's 700k with its 8 thread scored 970 6600 k 6:30 and 6700 k 906 so this is kind of what you would expect it's giving you that you know five to ten ish percent performance jump going from the 6000 series of skylake processors up to the 7000 series cable eight processors moving it over to single core mode that gives you a better idea of instructions per clock at least sort of a vague idea of instructions per clock 7600 K here scored 180 7700 K squared 194 then the 6600 K and 6700 K scored close to those numbers but again just a little bit less which is again kind of what we'd expect for a the iterative changes that Intel's been giving us with a generation to generation launches CPU mark as part of the pass mark suite but specifically it has two CPU overall scores are listed here 7700 K and 6700 K scoring up around 12,000 with again the 7700 K and 7600 K outperforming by somewhere in the 5 to 10 percent range depending on how accurately you do your math CPU mark has a single core test as well and here I want to point out the similarity between the 7600 K and the 6700 K scoring within 5 points of each other and bear in mind that those are the two CPUs that are running the single core at the same frequency at 4.2 gigahertz so food for thought for later on let's move on to Adobe Media encoder this is cs6 version and it is rendering a 4k video that's about 6 minutes and 50 seconds long for the 7600 K it took 27 minutes 7700 K took 23 minutes 6600 K took about 28 minutes and that the 6700 K took about 24 minutes again we're seeing differences here that fall in line with what we'd expect given that the 7700 K in 6704 more threads to work with and of course the other differences can mainly be explained by looking at those clock speeds let's move over to the gaming benchmarks though starting off with 3d mark firestrike extreme which run GPU intensive workloads as well as some physics tests that gives us more of an idea at the CPUs performance now the graphics performance across all these tests should be pretty much the same since I'm using the same GPU with note Changez 7600 K squared 97 40 overall take a look at that physics score of 93 87 and you can compare that to the physics scores of the other CPUs such as the 7700 K squaring 14300 the 6600 K scoring eight thousand seven hundred and the 6700 K scoring ten thousand two hundred and twenty six and again if you're looking at those combined tests so the overall tests you'll find that they even had a lot more it's mainly looking at that physics test that's going to give you the difference because that is primarily where the CPU is going to make a difference with this particular benchmark x pi is a direct x12 test and again has some tests that integrate the CPU a lot more in fact they have a CPU specific tests so again here overall we're not going to see a huge variance there all within about two three four hundred points of each other again that's largely due to the fact that it's using the same GT X 1080 GPU but with that CPU test we can see the performance again fall it's pretty much the same kind of layout that we saw with all of the other tests and if you're not noticing the trend here already the trend is that if you look at the frequencies that will kind of tell you what the performance is going to be and this is also why don't worry I decided to overclock as well and I'll be coming to those tests in a minute but first GTA 5 this using my standard test with maximum settings right 1920 by 1080 so it puts a little bit more of the load on the CPU as opposed to the GPU and again here we saw a little bit better performance from the seventy-seven arcane 6700 K but everything was pretty much within line that 6600 K came in last with D score of 129 average frames per second finally we have civilization 6 also DirectX 12 tests using max settings running at 1920 by 1080 I ran both the graphics test as well as the turn average turn time test now the turn time is the one that I actually thought was going to show more of a difference here because that is the one that's supposed to be more determined by the performance of the CPU as far as how quickly the CPU can process the AI and what it wants to do next when it's looking at the layout of all the map and everything that's there but not a huge difference here it in fact is awesome surprising upsets here with the 6700 a coming in with the lowest turn time of 22 seconds whereas the 6600 K up ended it with 21.9 five seconds there and then actually coming in first was the 7600 K at the time of twenty point six six seconds so probably some stuff remains to be seen as far as how multi-threaded the sip six AI test is because I'm not a hundred percent sure but there you go there's some game tests as well now before I move into some overclocking and some clock speed specific tests because that's really what it came down to for me was these all seem what they should be but I'm not really I feel like I'm not seeing apples to apples unless all the processors are running at the same frequency here are some temperature and power draw numbers please take these with a grain of salt the ambient temperature here in my garage it's about 21 degrees Celsius during testing fortunately it stayed that way because it's kind of winter here in California and max power draws for the entire system measured from the wall and it didn't really vary that much efficiency between the quad core with hyper-threading without seems to stay relatively the same but let's move on to the tests that I think you guys have been waiting for the most these are the overclocking tests and I'm only going to be showing comparisons for a couple of the benchmarks because honestly I did not have that much time and CES is about to happen I clocked all the CPUs to 4.6 gigahertz 4.6 that's a very slight overclock for the 7700 K just from 4.5 to 4.6 whereas the other CPUs are running down at like 3.8 3.9 got more of a boost but this was to give a better idea of straight instructions per clock performance from CPU to CPU let's start with Cinebench r15 running across all cores and we see Equalization yes the 7600 K at 6600 case Cori almost identical the same as a 7700 K and 6700 K I will say that the KB Lake processors are ever so slightly faster at least in these tests so I guess we can give them that but that's pretty much within margin of error looking at the single core results we see the same thing not more than a three or four point difference between all of the processors and that's running on this single-core on all the processors so that's taking any advantages that hyper-threading or multiple cores might give them cpu mark again showed just a leveling off of everything when everything is running at the same frequency ten thousand six hundred and ten thousand eight hundred respectively for the 7600 k and sixty-six hundred k so the 6600 k here actually outperformed the 7600 k at the same frequency but again that's still within margin of error for these tests so if I ran it bunches and bunches of times I have a feeling they pretty much even at to where they're supposed to be and again only about a fifteen point difference between the 7700 K and 6700 K again with the skylake processor winning out but just just just barely you could even really call that it win if you're accounting for variances and testing so I guess I had a I like I kind of saw it coming when I when I was doing the initial test and I was like I bet these are going to do the exact same performance if they ran at the claim same clock speed so in conclusion clock speed seems to be providing the greatest amount of performance variation between the skylake and KB Lake processors but those differences between the processors especially if you're looking at single threaded performance pretty much disappear when you equalize the clock speeds which you can easily do with these processors because there are all K SKUs now with a 7700 K you are at least getting a chip that guarantee can run up 4.5 gigahertz so I guess there's something to be said about that but most 67 or K is that I work with can do that fairly easily as well there also doesn't seem to be a whole lot of IPC improvement instructions per clock improvement if any at all over sky lakes so if the question you're asking yourself is I'm on sky lake now should I upgrade to KB Lake it doesn't seem like you really need to overclocking expectations performance reliability still remains to be seen with these processors I've only worked with two of them we need a much wider sample size it's going to be a bunch of the other people also posting their results right now as well as a big overclocking event the Intel is hosting at CES with Hardware bots where they're going to be doing a bunch more overclocking so that's thing that maybe could be said for KB Lake but we just don't know yet so it still remains to be seen whether once lots of people start overclocking these processors if they're average over clocks with KB Lake processors might be better than with skylake who knows it might be the same it might even be worse but we're going to need to wait probably at least a week or two for a lots more people to start posting their results to get a better idea of that so to sum up I wanted to point out that usually going from one generation of CPU to the next within cell you expect to see maybe a five to fifteen percent performance improvement on an instructions per clock level for that new generation but KB Lake just doesn't really seem to have that that leaves the other stuff to be your main motivations to upgrade like new motherboard features and there are a few of those that I've talked about in my first five things you need to know about KB Lake video you should click on that it's leaked but also there's those tiered features that they're blocking people out of like support for opting or 4k streaming which honestly feels more like they're purposely locked it's like it's like that you need to have windows tend to run DirectX 12 you know it's like they don't have to do that they're just doing that to force people onto the new platform or into buying new stuff honestly though what I really want to see is what kind of pricing changes or other shakeups happen in the CPU marketplace when Rison goes on sale AMD's promised competitor for Intel which is supposed to happen in q1 but apparently not quite yet that's all for this video though guys don't forget to hit the like button if you enjoyed it you can also share this video with other people if you know anyone who's interested in KB Lake and particularly some kb lake benchmarks because lord knows these took a decent amount of time and your feedback and likes and all the good stuff always helps subscribe to my channel if you're not already comment in the comment section down below let me know what you think of this launch and what exciting hardware you're excited about having launched in 2017 I've talked enough for this video already thanks for watching and we'll see you Sam