Gadgetory

hello I'm Gary sim from Andrew authority do you want to know about the snapdragon 845 well let me explain so call comic just had their technical summit in Hawaii and we've just been getting all the great new details about the next year's flagship system on a chip that's the Snapdragon 800 and 45% during eight four five so what is it well first of all it is a 64-bit system on a chip that's going to be found in Android phones and also probably in Windows laptops and we'll talk a lot more about that in a moment now inside of it there are lots and lots of different components that's what a system on a chip means it's not just a CPU in there you've also got a GPU you've got an image processor for the camera you've got a DSP for doing signal processing and also for doing some heavy computation like neural network stuff you've got security you've got all the connectivity modem and of course Wi-Fi and Bluetooth and that's all built into just one chip so looking at some of the components individually it's start with the CPU know the CPU in the snapdragon 845 is the cryo 385 now it's built on cortex technology that means that Qualcomm have taken a core design or two core designs from arm and then they have tweaked them a little bit maybe some of the internals may be in how it fits into the rest of the chip that lay out physically on the on the silicon and then they've allowed to brand that as their own chip design which in this case of the cryo 3 8 5 now it's probably that it is the cortex a 75 and the cortex a 55 now if you remember the court is a 75 and a 55 are the two new core designs from arm that used dynamic and the great thing about dynamic is that these cores are now together in the same cluster which means they can share a lot of the same buses and all of the same input and outputs to the rest of the chip without having to be separate and then kind of working independently now here we've got four high-performance cores caught it's a 75 cores running at 2.8 gigahertz and we've got for power efficiency causes the cord it's a 55 running at 1.8 gigahertz so each of the cores have l1 cache and l2 cache the l2 on the bigger cause is slightly larger 256 K per core and is 128 K per core for the a 55 power efficiency cause but beneath that there is an L 3 cache of 2 megabytes now that l3 cache of 2 megabytes works across just the cause it doesn't work across the GPU and the DSP as well so what Qualcomm has added in another layer of caching which they're calling system cache which is a further 3 megabytes and that means that when the CPU and the GPU want to talk to each other that data can be cached on chip without having to go out to main memory looking at the main memory is slow because these are all relative terms so we made up all that caching 3 megabytes across the system core and then 2 megabytes across the l3 cache and then l2 cache with one megabyte for the high performance cause half a megabyte for the power efficiency cause that's six and a half megabytes of cache excluding the l1 caches now that's a significant amount of cache and that's going to be part of the reason why they've managed to bump up the performance here by 30% of course also the a 75 and a 55 are much more much more faster performant than the previous generation anyway but a 30% increase in distilling it's not as much cash as you find in the 11 Bionic however we're getting close to that kind of level now if you think about a 30% performance increase that's absolutely amazing if I said to you that you could buy a new car or a new television or a new microwave that in its measure of performance it was 30% better than the last model that that's pretty impressive now talking about memory for a moment this system on a chip uses LP low power ddr4 it runs at 1.8 gigahertz and you can have a maximum of 8 get gigabytes in a snapdragon 845 phones we're not going to see any 16 gigabyte phones next year and looking at the GPU that comes in the Snapdragon 845 it's the Adreno 630 Qualcomm asset and the next generation they've done a lot of work from the ground up to build this new GPU it's 30% greater performance while using 30 less power which is quite amazing and also it has a 2.5 times a display throughput so significant gains in both the CPU and the GPU performance so the DSP in the subject in eight four five is the latest generation hexagon DSP it does more than just digital signal processing and also do lots of vector calculations it's a third generation of vector engine inside this DSP and Qualcomm are positioning this for all of their neural network processing so it doesn't have a dedicated NPU or neural engine they're saying you can do this on their DSP and so that's in the DSP support all the common neural networking frameworks including tensorflow light and also now support halide that programming language that's being used for image processing which you'll find also in google's pixel to smartphone and the update this will enable that of course was in android oreo 8.1 and then also you've got the spectra 280 ISP which is the image signal processor which of course is used when data comes from the camera how you protis all that information and turn it into movie files and JPEG files that we all like to use now the spec the new spectra is pay can record 4k at 60 frames a second that's a lot of bandwidth they put in there it supports a 10-bit color gamut for video recording so you can actually record in this new HDR mode which will give you ten bits of color and also it can do 480 frames per second slo-mo but only in 720p now the the new DSP in the ISP actually present a problem for Samsung funnily enough because now that there's so much extra stuff going on on the Qualcomm s SOC not just a CPU and a GPU boot got these extras that are doing a lot of multimedia work a lot of processing work a lot of neural network stuff what happened when Samsung want to release their next phone and some of them are using Samsung's Exynos chips and some of them are using Qualcomm's where are they going to draw the line for the lowest common denominator that's going to be a real pro bar coding problem we'll see what Samsung released next year and see whether they've kind of chipped down taken down the Qualcomm processor a peg or two so you can't do this fantastic slow mode or you can't do 10-bit color recording if their new occipital supported we don't know yet so we instance to see what they come out with the new external chip - because these two have to work side by side in two versions of the s9 or the note 9 or whatever samsung release also built onto the chip is called comms acoustic chip and that's acoustic a cue stick acoustic and that supports apdex aptX which of course is the bluetooth codec from kokum which delivers greater audio quality than the standard Bluetooth codec and talking about you've also got bluetooth true Wireless which is a proprietary standard from Qualcomm that allowed two Bluetooth streams to come independently to maybe a left ear bug on a right earbud and they both come independently from the phone rather than one being the master and it kind of copying the information over to the other one and what we're talking about Bluetooth is also full support for Bluetooth five built into the Snapdragon 805 three more things worth mentioning one is that it's also got the new X 20 LTE category 18 modem which means it has a potential download speeds of 1.2 gigabits per second a lot of people get very excited about the LTE modems I don't quite get so excited because it really does depend on what your carrier provides and while these manufacturers are able every year to bring out a new phone and bring out a new modem it's a bigger difference to change a whole country or a whole state to have the latest LTE network on it so we're always kind of a few generations behind what the actual phones can manage however for the future that's a really good sign the sse also supports quick charge for which is qualcomm ladies quick charging technology and it's backwardly compatible with USB power delivery and if you want to know what mirrors be power delivery is then please do check out my video on this channel where I go into great detail about what it actually can do for us as consumers and the last component worth mentioning is the new security processing unit that's basically a way of kind of keeping things like fingerprint data and passwords and all education process is very separate from the cpu so even if some kind of malware managed to get on to the low levels of your CPU here's now another barrier that protects this biometric information and protects your digital information it actually has its own CPU probably a cortex m3 it runs its own little operating system and the CPU will talk to it and say hey let's do some authentication here and it's a separate entity so overall I'm pretty impressed with what the Sundering 845 is offering in terms of the specifications got the latest CPU or using dynamic from arm you've got the latest GPU from quark on themselves and on top of that you've got the DSP and the ISP and the acoustic chip audio processor and then you've got the security processor you've got access to eight gigabytes of lpddr4 Ram it looks really really impressive cause we won't know how impressive it truly is until we see phones launched next year but talking of phones being launched Qualcomm did make it very clear that this chip is optimized for Android and for Windows running on arm so with this year we've just seen the launch of the laptops running Windows on the snapdragon 835 and next year absolutely we're gonna see laptops running windows on the snapdragon 845 so - go central authority I hope you enjoyed this video if you did please do give it a thumbs up also don't forget to subscribe to our and real authorities YouTube channel hit that little bell icon so you get notifications whenever we release a new video and 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