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oh hey guys uh just casually gaming

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with the purchase of a qualifying Intel processor SSD or knuck you could

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instantly win an Intel gaming jersey and be entered in the draw for the ultimate

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system click now to learn more the first and most important thing about this

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mouse is the optical sensor featuring logitech's delta zero and fusion engine

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i'll get into exactly what the fusion engine does in a moment but first i want

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to test their delta zero feature which basically means no cursor acceleration

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as i have some pretty seriously deeply rooted trust issues when it comes to

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most manufacturers and their claims about acceleration a quick and dirty

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explanation of mouse acceleration is this if you disable it moving your mouse

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from point a to b along a surface without acceleration should result in

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the cursor on your screen moving exactly relative to the movement of your mouse

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independent of the speed of which the mouse is moving

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if you were to start at a move halfway to b extremely quickly shake the mouse

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around for a little while and then go extremely slowly to b it would still

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land on b if you enable acceleration moving extremely quickly the same

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distance on the mouse pad will cause your cursor to overshoot b's position on

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the screen and then repeating the same movement but very slowly will cause the

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cursor to fall short of b's position this is fine for average users who want

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to move their mouse very slowly when trying to click on something more precisely but it's not desirable for

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gamers who want precision of their muscle movements to translate directly

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to the screen without any janky randomness it seems like this is a

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non-issue since aside from gaming mouse drivers Windows allows pointer

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acceleration to be disabled except that many modern gaming mouse sensors have

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inherent acceleration that cannot be turned off so to calm anxiety we tested

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g402 sensors by grabbing our camera slider and just doing a few

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modifications i replaced the traditional soft stopper method with dual heavy duty

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clamps to reduce travel when the slider bumped into them

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i then put the slider on the table and lowered it pretty much as far as it could go using a velcro strip to secure

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the mouse to the bottom of the slider then for measurement i put a grid

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overlay on my monitor after all this setup i tested it with a

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variety of movements and i'm happy to say that as far as i can tell the g402

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features what is known as a perfect sensor with no inherent acceleration

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kudos logitech next up is the fusion engine i was

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talking about earlier logitech is using a gyro and an accelerometer to augment

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their already awesome optical sensor if you're running at a low dpi setting and

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need to whip your mouse insanely fast in order to pull that super sick 360 no

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scope at the end of your mega dope montage video it is technically possible

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for you to outpace an optical sensor if you do manage to outpace the optical

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sensor it can potentially cause the cursor to jutter or even drastically

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jump around which is bad with the fusion

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engine and the gyrometer and accelerometer we'll try to fill the

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holes in the data stream to avoid this to test this out Linus and i had a

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contest of sorts where we battled to see who could whip the mouse the fastest in

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terms of ips or inches per second minus one to his extensive master badminton

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skills which he has honed over many years of extremely vigorous training so

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it works as advertised kudos again but even though it worked i left logitech's

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sensor monitoring tool on for a night of gaming and just tried to ignore it and

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play normally to see what would happen it seems that i never actually exceeded

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84 ips which means this feature is unlikely to ever actually kick in for me

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but i'm not a professional gamer if you're a low sensitivity gamer and you

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do end up purchasing the g402 and you find that you get into the speeds where

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the fusion engine really benefits you please message me on twitter or some

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other medium as i'd love to hear more about your experience which brings us to

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the software setting the 240 to 4000 dpi

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sensors multiple sensitivity levels was easy enough and it allowed for fairly

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specific setting as it was able to increase in increments of 80. you can

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also set your polling rate to 125 250 500 or even 1 000 reports per second

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after getting all that technical stuff out of the way you can have fun with the right side of your brain by playing with

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the customizable lighting you're able to set brightness level change the speed or

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disable breathing mode entirely and change the deep if dpi lighting is

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always on or just illuminated when you are changing things and last but not

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least is turning off the lighting effects when you haven't used your mouse for a specific amount of time handy for

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those of us who have our computers in our rooms so that was fun but now it's

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time for real world use of impressions in terms of shape feel and ergonomics of

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the unit when compared to the g502's futuristic alien looking aesthetic the

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g402 is definitely more conservative but still does have some flair it's rocking

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eight buttons including forward back dpi up dpi down dpi shift left click right

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click and middle click and they can be programmed to execute various functions

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keystrokes or even multi-key macros using logitech software so basically

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even if you're one of those guys who is religiously against dpi shift buttons

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you can set that button to anything from play next song functionality to spamming

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kabba kappa kappa or razer dongerz in chat unfortunately though scroll up and

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scroll down were not included in the key binding options after all that we're

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left with a few takeaways when compared to the g502 the g402 is definitely a bit

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more conservative it's down to eight buttons from 11 it

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doesn't have a free spinning or tilting scroll wheel it doesn't have a

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customizable weighting system it lacks some of the nicely textured soft touch

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rubber gripping the light isn't quite as bright

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it doesn't have a braided cable the swooped out part for your thumb isn't

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nearly as accommodating and the left and right click don't feel quite as sharp

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and responsive as the g502 but they still have a 20 million click rating

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which is nice but hold on now that's actually not that bad on one hand you

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have the g502 with its beautiful sensor and laundry list of features on the

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other hand you have the g402 with a different but still beautiful sensor

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which is ARM in ARM with a powerful but possibly not needed for everyone at

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least fusion engine while the g402's laundry list of features is considerably

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shorter than the g502 it still feels great in hand i mean you still have the

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fundamental ergonomic quality of a logitech mouse which too many people

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myself included feels great in your hand

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and you've got one other thing in your hand that feels great too

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20 bucks the g402 is 60 compared to the g502's 80 price tag so that's a lot of

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most for your money and the review is pretty much over but i have one more

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closing thought thank you logitech for working on meaningful performance

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metrics instead of just focusing on dpi

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which many people are just going to lower anyways they don't even have their

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dpi blasted on the front of the box and it's clear they're more focused on

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things like their delta zero and fusion engine technologies i'm tired of seeing

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companies dump high-end flawed mice

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year after year and it's nice to see a shift in focus speaking of a shift in

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focus today's video is sponsored by Gigabyte auras x7 v2 gaming notebook

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this is the thin and light sli gaming notebook that we compared against a not

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so thin and light notebook in the video in the annotation here

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with two GeForce 860ms in sli an Intel i7 4860hq processor a 17.3 inch 1080p

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display a one terabyte hard drive and a few different options for SSD and RAM

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capacities all packed in a chassis that's less than 0.8 inches tall this is

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an absolute beast that you can pack in your backpack without breaking your back

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as a surprisingly good keyboard solid heat dissipation from its rear exhaust

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setup and more than acceptable noise levels for a thin notebook all which

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make the Gigabyte auris x7 v2 an ideal product for someone looking for a

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notebook that's suitable for everyday use as well as gaming so if you're in

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the market for a gaming notebook be sure to check out pricing and availability

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for the x7 v2 using the link in the video description let me know what you

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guys think about their delta zero and fusion core technologies as long as what

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do you guys think about our testing methodologies for stuff like acceleration also if you would like to

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save money getting the 402 or if you're more kind of into the baller style

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status of the g502 let me know all that kind of stuff in the comments down below

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where you should also be liking disliking subscribing sharing and

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otherwise distributing this video and if you want to post somewhere else because

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you're kind of not into youtube jump over to the forum post there and let me

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know what you think there if you don't like the ads on the forum become a contributor and as always thank you guys

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for watching i'll see you next time