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those who are in the know know that when it comes to measuring the

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performance of a graphics card FPS is

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just part of the story i mean you could

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have all the FPS in the world but if you had an extremely high latency from your

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mouse click to the graphics card processing it outputting it and actually

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seeing the photons hit your eyeballs that wouldn't make for a very good

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gaming experience furthermore efficiency matters if you

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had two graphics cards that performed the same but one of them sucked back 500

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watts and outputs so much heat in your room that you're like

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gaming like this well surely you'd rather have the more

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efficient one now we've tried a variety

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of different methods of measuring these things in the past everything from clamp

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meters for power to makey makeys with high-speed cameras for input latency and

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sometimes it actually worked out okay but more often than not it required more

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setup than we can put into every single GPU on every single test bench

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fortunately that all changes today meet

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NVIDIA's homegrown tools they're calling

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these the ldat and the p cat

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and we're gonna see a if they work and b we're gonna discuss

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whether or not you can trust them glasswire is the tool that shows you

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which apps are slowing down your connection in real time it's used by

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security pros to monitor for malware block bandwidth wasters and detect

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suspicious activity get 25 off using offer code Linus at the link below

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let's start with ldap the latency and

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display analysis tool it's a rather unassuming looking

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logitech g203 prodigy but wait you need

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to look closely here there's actually a second wire coming out of this thing and

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if we follow it down to the end we find

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a photo sensor

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it's embedded in an unassuming looking little 3d printed housing and that wire

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from the mouse plugs right into the front of it a little something like that

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so then how is this supposed to work

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like so when you place this puppy on the screen

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it detects changes in light output so that means we're actually using a

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similar method to something like the one made by leo bodnar but fundamentally

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different in two ways one instead of taking an HDMI input to

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measure display latency we are actually taking a mouse input to measure end to

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end mouse to photon latency

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two it's software controlled from back to front so through that we can set up

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an auto fire mode that is completely unattended as long as something on

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screen changes every time the mouse clicks we can repeat our tests

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indefinitely to get a reading of potentially hundreds or even thousands

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of data points within a single minute of testing giving us an extremely accurate

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result it even lets us see raw sensor data so we can determine where the best

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place on the screen is to place the sensor you guys might not know this but

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screens actually draw like this not just

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like randomly not all at once yeah dead center is fine um ideally what it would

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be is like say you're measuring a game so if it's a first person shooter

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then you would be putting it over the muzzle where the muzzle flash would be

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press the button so why don't we go with my my personal favorite we'll go with

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that that cs go well there's you're missing a step oh i see there was

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another cable in that box yeah and it's still in there oh yeah wait what's this

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for that plugs into the light sensor well let's fire up the program first

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that would be on the desktop it's just in a folder called ldap ldap oh yeah i

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can measure audio as well it's got a little 3.5 millimeter audio jack in there so it can measure audio latency

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in theory you could measure any audio latency with that like not even a computer like

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a tv or something so if you keep it in free running mode then if as you move

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that around uh there you go see there was a little

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luminous change whoa look at that

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so if you put a brighter window over that or some kind of

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yeah like task manager whoa cool yeah so you can actually set the

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activation point for what luminance it should like pick up on uh-huh and uh

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yeah it'll just do it it's super fast sensor

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that's cool you can also add the uh mouse button as

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well with that second option so that it it actually will detect when

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you click the mouse this mode is mostly useful for setting things up the first

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time and that histogram is what you get after you get the latency calculation

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right now if you wanted to get something that's actually a latency calculation

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uh put the window for uh ldap in front of the sensor now click on the window

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like somewhere other than a control

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oh cool yeah so you can just do that it'll pick

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it up how how long it took for it to change so

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what it's doing is it's actually sending the pulse to make the click down the

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cable that's connected to the mouse it's not actually like using Windows or

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anything else to make the click it's it's all in in the hardware so you didn't have to have the software running

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on this computer not only does this automate the process and make it so that

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we can run these tests without a secondary pc or like camera capture

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setup it's going to save so much time it even exports in csv form which we can

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then import into excel and turn into nice little charts for you guys

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but it doesn't tell us

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what is contributing to the overall input lag it just tells us the total so

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what we're measuring here is everything debounce usb polling rate operating

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system processing delay driver processing delay game engine processing

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delay render to display delay and then finally of course the pixel response

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time of our display which isn't to say

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though that it's useless because if we've got this data it means that we can

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change other variables one at a time and just see if the

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overall delay gets better but it's got

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NVIDIA right on the box can we trust it

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yeah i mean it's just a mouse with wires coming out of the button that goes into

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the sensor you don't even have to plug it into the same computer it has nothing

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to do with NVIDIA so yeah i don't see any reason why not

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cool all right how about this other tool this

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is the pcat or power capture analysis

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tool you can tell these are named by the engineers right this is probably the

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most interesting thing i've seen in a

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long time when it comes to measuring

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graphics parts tools to accurately measure power

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consumption are not easily accessible being either very expensive or very rare

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or even worse both methods we've used in the past such as

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kilowatts don't accurately measure power draw because power supply inefficiencies

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can creep in to say nothing of the rest of the system's power consumption during

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the test even worse are the software derived methods you might use at home

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because a each vendor has a different idea of how to measure total board power

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and b you're counting on them to report it correctly

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never go up against a sicilian when death is on the line

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which brings us then to these two pcbs one with a pci express

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connector and card edge and another with

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a whole whack ton of pci express power

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connectors as you guys might have guessed

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these allow us to measure the power flowing through each of these connectors

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that is both from the power supply cables that

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come into the graphics card and through the motherboard itself with up to three

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eight pin pci express 12v cables

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now on this puppy right here we've got a removable OLED display that takes both

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the feed from the pci express board and the power interposers and spits out

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statistics and the current power draw NVIDIA claims it's within 0.25 of their

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oscilloscopes as far as accuracy goes so with this we can accurately measure what

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the real world power draw is for any pci express card actually not just a

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graphics card let's go ahead and try it out here this is one of those things

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that as a manufacturer you have to have the absolute utmost confidence in your

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products in order to produce because it's the kind of thing that

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obviously both AMD and NVIDIA have had internally

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for years but if you go ahead and you make all these

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tools available to you know every yahoo you know hardware reviewer out there

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then not just today but for years forever to come they're going to have

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the means to hold you accountable for your crappy products so you basically

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have to think you know not only do i have the best product

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today but i'm gonna have the best product forever and i want everyone to

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know about it to produce tools like this and send them out because i've asked for

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years like you guys obviously have all these measurement tools why don't you

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just provide them to us because you have them anyway and the answer is always

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like uh let me get back to you

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and yet here we are this is freaking awesome

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how replaceable is this Anthony is this just something NVIDIA's going to sell on

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their webstore or like is it reviewers only or for now it's a

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reviewers-only kind of thing it's just something that they've kind of built upon out of their lab that's why you see

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the 3d printed components but they haven't ruled out selling it to

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consumers if there's enough demand for it so uh

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maybe let them know down in the comments if you want to see that just just make

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sure that they're on the input side versus the other output side and there's

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a wire on each end all right so

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let's just put that puppy i don't know like

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brilliant so they include up to a triple slot

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of little dude adama jigs that you can

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screw in here to your case so you can actually mount it securely apparently

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it's a standard item for mcmaster car you can actually just order them

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yourself if you need a different threading for your screws oh okay

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uh well which i think may actually be necessary in our case all right we're

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just huh we're going straight yolo here boys

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oh yeah no problem piece of cake

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oh the display is upside down this is why we didn't give Linus the

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tools okay okay here we go total power 14 watts

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right now dang oh i should plug in an HDMI cable

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yeah power usage probably go up a little bit with the HDMI cable in yeah the good

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news is the HDMI cable should anchor it to the back of the case here so oh

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that's not a good solution what do you what do you work at Linus

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tech tips or something what's wrong with you listen we deal in jank around here

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right of course you're not stuck just looking at this little tiny display down

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here as freaking cool as that is there's an accompanying pcat utility v 1.1 that

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like the ldap one can log to csv files and additionally provide real-time power

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graphs look at this not just total but

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on a per-source basis so on our two eight pins here you can

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see we're doing somewhere in the neighborhood of four

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watts or so and then where is it yep 12 volt pci express so

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that's coming through the slot we're doing about four or five watts so it's actually equally balanced across all of

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them so then i can just fire up furmark right

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yeah and if you wanted to have all of those different uh metrics on the graph

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there was actually check boxes down at the bottom right there and that'll just

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throw them on there for you even just the like the Windows

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hardware GPU acceleration of the ui

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will give you these little spikes when you do stuff like watch i'm going to

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launch fur mark and it's like oh 40 watts hey we got to draw this window are

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you okay everybody calm down now

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250 watts and i guess we can

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believe it because that's about what we would expect out of a board like this

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and i mean this is just this is just power wires like it would

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have no way whatsoever of knowing if we have a Radeon or a g-force or a

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Intel

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not yet but later you know at some point yeah it's completely agnostic as far as

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it's concerned it can just measure power from whatever source doesn't matter if

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it's a graphics card or a sound card or a network card

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and just figure out what the power draw is we are going to be able to do the coolest like power draw charts for you

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guys and it gets even better because finally both

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of these tools integrate into frame view 1.1 to show latency and frames dropped

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by the display and power statistics from

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pcat now that the overlay has vulcan support plus we've got integration of

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these other tools there's actually very little that we wish that it did

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that it doesn't already directx 9 and 10 overlay next please and thank you

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let's go ahead and take a crack at this campaign so we've jumped to 4k and we're gonna

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see how this puppy performs here how much power it draws

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we're gonna know for sure

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broken ARM thing in your mouth boom broken head

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you fell off a cliff take that

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oh that guy threw a thing at me don't do that anyway that's not the point today

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the point is we are sucking back around

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250 water rooney's with this thing oh wow it's got right it's got the little

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display on it i don't even have to like all tab out i can see it i can see it

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right there i love this this is this is freaking

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cool and i'm sure that if the price is reasonable a lot of enthusiasts are

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going to want to get their hands on these things come on NVIDIA put it on

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the store today's video is brought to you by the drop objective 2 headphone

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amplifier aka the o2 amp this amp was designed and created with the feedback

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medium and standard and it delivers big clear and accurate sound check it out at

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the link down below okay

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um what are we thinking for thumbnail