WEBVTT

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the focal point of any graphics card once you get past the RGB lighting of

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course is the GPU itself which does all the

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number crunching that pushes the frames of your favorite games to your screen

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but an often overlooked component is your video memory which typically takes

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the form of these small modules surrounding the GPU if you take off the

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cooler the memory stores visual assets like textures and other information that

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the GPU needs to process to render a finished frame and like gpus video

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memory or vram gets a boost in speed and performance every so often and today

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we're going to tell you about the latest newest boost a type of vram called

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gddr6x gddr6x is set to be the successor to

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gddr6 and the older gddr5 family on high-end

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graphics cards although plain gddr6 without the x is actually a fairly

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recent innovation with both the rtx 2000 series from NVIDIA and the rx 5000

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series from AMD using it the new x revision was developed to keep pace with

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the ever increasing demands on our gpus you see the reason that video memory

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performance is so important is that you can have the most powerful GPU in the

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world but in order to render your frames quickly enough it needs something to

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work on so if your vram can't get visual assets and other crucial data to your

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GPU quickly enough you can experience slowdowns and even crashes generally

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speaking higher resolutions and quality settings require more video memory in

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order to store all that extra information which is why you often see

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recommendations that users choose a version of a card with more vram if

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they're trying to play at 4k but you need high speed to move all that data to

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and from your GPU quickly enough which is where gddr6x comes in unlike typical

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data pathways called buses which move data one bit at a time gdr6x uses a

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technique called pam4 which isn't something you spray your skillet with

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but rather a method that can send one of four discrete power levels at a time

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instead of two this means that gddr6 can move two bits at a time dramatically

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increasing bandwidth and as we demand graphic solutions that can pump out high

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resolution frames faster than ever gddr6x has made its way into graphics

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cards with the new NVIDIA rtx 3090 and 3080 which are aimed at 8k at 60fps and

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4k at 120fps respectively and based on

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how much each module of gddr6x can store

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the rtx 3090 will have nearly one

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terabyte per second of vram bandwidth

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while the 3080 will deliver a still staggering 760 gigabytes per second

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that's right having more capacity actually gets you more bandwidth and not

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only that the pam4 scheme is more power efficient since it can send two bits per

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clock cycle meaning super high-res gaming might not require as beefy of a

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power supply on desktop or suck as much power if you're using a gaming laptop

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but hold on a second james i thought hbm was going to be the way of the future

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well high bandwidth memory or hbm did look like it was going to take the

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graphics market by storm not too long ago but it was more complex to

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manufacture than various versions of GDDR and AMD who developed the

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technology moved away from it for their rtx 5000 series however that does not

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mean a future variant of hbm couldn't compete

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with GDDR as the powers that be are still working on improving the

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technology and it might become cheap enough at some point to appear in

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mid-range gaming cards instead of mostly in data centers which are using gpus for

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non-graphics applications such as ai but for now

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gddr6x looks like it'll be king of the hill for a little bit i mean it has an x

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in it and that makes it cool right

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below so thanks for watching guys if you like this video then give it a thumbs up

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hit subscribe and be sure to hit us up in the comment section with your ideas for topics that we should cover in

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future videos