Gadgetory


All Cool Mind-blowing Gadgets You Love in One Place

Is Hyper-Threading Even Necessary? ZombieLoad Impact Testing

2019-05-20
so clearly there's a lot of construction going on outside of our old set while we're building our new ones so we're kind of in the shitty position right now where it's noisy no matter what we do so I apologize for that but until our set is done and they're done we get to deal with the noise and being semi-homeless but that's okay so here's one day we're going to talk today about the new vulnerabilities that are going on with Intel processors but we're not going to talk so much about the problem we're talking about the potential effects of the problem on your day to day and then we're gonna kind of test whether or not disabling hyper-threading only affects our performance like 7% which is what Intel is trying to make you believe the new bridge PCIe cables from cable mod fuse two separate PCIe cables together with a single close comb for an incredibly clean look you can configure yours however you like using their easy-to-use configurator and from now until May 27th you can take 15% off your order using the coupon code May 15 this coupon code is good for absolutely everything on the cable mod global store so if you've been looking at pimp your rig with cable monte r now's the time to learn more click the link in the description below okay so like I said we're not gonna talk a whole lot about the problem itself if you guys want to learn more about this new vulnerability it's called zombie load and it's specifically affecting like predictive computing and so that is gonna specifically be dealing with Intel CPUs and hyper threading and you can drill down into that more it's called MDS but you can drill down into that more if you go and do some searches but what I can tell you the problem regarding this and zombie load is the fact that it could be affecting clouds how much information have you sent to the cloud how much data have you ever just connecting to the Internet your information is in the cloud packets are sent packets are received and so we have server farms and data farms and all that that could be potentially affected by this so that's a whole different level Enterprise Solution that's going to have to be figured out in terms of patching and MCU or micro updates so I looked at this way I'm like what is the impact going to be for you my average viewer who's gonna be general use computing maybe some video rendering or live streaming and gaming so today we're gonna do some testing on both hyper threading enabled and disabled on our 8700 K not our highest n CPUs that we have because we want to kind of try and keep it sort of realistic to the real world we have a twenty eighty on here another twenty atti so this is more like a 1080 a 1080i and I guess technically not really lower than that but whatever what we want to see here is what the impact would be like if you wanted to take the extreme measure of protecting yourself by disabling hyper-threading now like I stated earlier it's a really convoluted complex problem that I don't know what the solution is gonna be a long term on that I don't think intel does either but they made a statement that it's okay you can disable hyper threading and you'll lose like seven percent performance well it's kind of funny because Apple said the same thing only they quoted 40 percent of a performance loss so I'm kind of curious as to what that number really is we're gonna test that today and see what the real impact is gonna be to my average viewer alright so as you can see with our 8700 K it's still running at 5 gigahertz that's only like a 300 megahertz overclock on all cores so this isn't out of the box performance but like I said what we're testing here is what the bottom line what did we lose performance wise on my rig by disabling hyper-threading so obviously your results may vary depending on your motherboard if you have a hyper threading CPU you more than likely even on a unlike a B Series motherboard would have the ability to disable hyper threading so you could test this on your own and it's only one switch you have to flip inside the bios of course each bios is gonna be different so let's do this I'm gonna go ahead and let me do a 3dmark run first the reason why I like 3dmark is the fact that it gives us both a physics test which is CPU and it gives us a GPU test which is obviously high frame rate switch CPU can hold that back we see it all the time especially when we're doing like our high a you know Ln two cooling benchmark runs that the CPU does indeed affect the graphics core so that is what we are going to test for sort of our baseline there probably a Senate bench will do a Senate bench run as well and we are going to do time spy extreme will do both screw it will do time spy extreme and will do regular time spy will just kind of do some tests and then we'll just disable hyper-threading and do the same test so here's our baseline the very first test that we did everything is on hyper-threading 5 gigahertz and all that no overclock being applied to our graphics card that's important there's no afterburner running any of that so we've got a graphics core 5223 a cpu score of 36 45 for a combined score of 49 oh for now we obviously know when we turn on hyper-threading it's gonna go down but anyway there's our base mark our baseline 4904 with our two individual scores so let's see what Cinemark gives us or Sinemet Cinemark it Cinebench whatever could you imagine if they just combined the two tests 3d benched in America ok so our baseline test right now I'm not going to go through the scores really I'm just going to show you which ones we did because what we're gonna do here is we're gonna put them in a graph format we care more about how much performance we lost rather than what the actual score is that we started with because when we end up with this kind of the point here so we did Cinebench r15 with hyper-threading on all 12 cores 6 cores 12 threads doing their thing at 5 gigahertz we did times by extreme and Rigo times by because they both respond very differently to workload because it's this is technically a 4k test versus a 1080p test or a 1440 test we did 1080p Metro Riddick's in again no overclocks to the GPU so we want to see what happens to our average frame rate because this is a high frame rate game two hundred eight point nine frames per second so we want to see how what happens to that once we cut the that workload potentially in on oh by a third I mean hyper-threading people think is like doubles your performance it doesn't same thing in 1448 and we also did shadow of the Tomb Raider in both 1080p and 1440 mostly because this is a very CPU centric game as well so we also did a premiere of our kingpin video so we did a premiere render with a 99 we're doing this on Phil's test bench and then we're gonna re-render it or edit rate whatever yeah it's a test bench today and then Phil is gonna also rerender it with the exact same settings and same export settings with hyper-threading disabled so those are our tests so let's go ahead and disable hyper threading now in your particular motherboard it's going to vary we have an asus motherboard here this is a Strix z3 70 or z2 70 hey they started working again apparently that union break is over so anyway I digress let's go ahead and go into the BIOS here now I'm just mashing delete some of my pf8 whatever look at your motherboard manual I can't tell you how to get into BIOS on your motherboards but I can tell you on Asus you can mash delete and then what you're gonna get as a menu that looks like this if it's an rog board it's it's red it might be blue depending on which motherboard you have so you just go over here to advanced CPU configuration hyper-threading disabled f10 save so now we just turned off hyper-threading entirely so now we have a six core six thread CPU do you think we're gonna lose more than seven to nine percent alright so we ran all the tests and stuff so the question is now how does it all stack up well if you take a look at these charts that were kind of showing you right now you'll see that hyper threading for gaming really doesn't make that much of a difference believe it or not it's a subject I haven't really given did Davitt dive dive Dobin dope I have not done a lot of testing with how hyper threading directly relates to gaming performance but we do know as CPUs and stuff become more you know utilized in games and multi-threaded it could indeed have an impact now what you're gonna notice what these percentages is that this is just the one task it's the one game running and the comparison of hyper threading on hyper threading off you know half the logical course but we saw as low as 0% loss like 1414 Metro all the way up to about what fifteen point six are sixteen point eight percent loss in premiere fun fact about premiere though is if you're running a CPU that's got an IG P you in it we showed in the past on how you can enable hardware acceleration where the AI GPU built into the to the CPU can handle all the h.264 encoding on a hardware level so it doesn't really matter at that point because once you enable that we got the exact same score or time pretty much about 11 minutes with hyper-threading on and off but that's because it's offloading it to a whole separate die anyway an interesting thing though is with time spy we saw the exact same percentage drop with hyper-threading on and off in both extreme and non extreme but what's interesting is that we did say see a bigger reduction in normal versus extreme because of the lower resolution higher frame rates which of course the CPU could start to hold it back but we saw in time spy we actually saw the graphics core increase ever so slightly like 60 points or something like that probably still within margin of error but we did of course see the CPU drop on both of the physics test because it is 100% CPU seems to be roughly around where Intel was saying the performance loss would be you know 7% to 9% nowhere near the 40% that Apple is saying the performance loss could be but we don't know what those testing perimeters were we don't have any details about what rig they use what CPU they used what we think Apple could be wanting to make Intel look a little bit worse than maybe it really is because who knows what their future holds in terms of proprietary hardware they could also be trying to cause a little bit of pressure for Intel to do something more quickly we don't know so at the end of the day I'm much more comfortable now telling people like it look if you're building a system just for gaming it makes sense to save some money and go with like a 9600 K or a 9700 K versus a 9900 K but again this is a six core CPU where a four core would obviously show us more of a gap but yeah so this kind of really changed my way of thinking on the way I might build some of my future systems when we start thinking budget and even high end because gaming systems just the for the example of gaming do not get hit that hard with hyper-threading even on the multi-threaded stuff like far cry and shatter the Tomb Raider and all that sort of stuff but again it really depends on what you're doing to computer if you have tons of programs running a background task going if you got VMs all that sort of stuff then obviously you want as much of the horsepower as you can possibly get alright guys thanks for watching I just wanted to kind of put this out there if you were curious about what performance you lose if you turned off your hyper-threading on your Intel CPU not as much as we initially thought which really truly surprised me so alright guys if you think this is something we should investigate further in terms of hyper-threading and games and how they correlate let us know what titles you think we should test there's so many titles out there it's impossible for us to really determine what the most universal titles are so this is where you guys help us try and determine that all right we're gonna go now thanks for watching and we'll see you in the next one and I get a set to build because I'm done with this crap so we're gonna do this in a bench now it's time to start we'll kind of show the FE two guards burn and then the Bert and and that's in an orphaned or
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.