AMD RDNA3 GPU Architecture Deep-Dive: 7900 XTX Drivers, Rasterization, & Ray Tracing
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Date: 2022-12-07
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Comments and reviews: 15
DeinonychusCowboy
Devil's advocate: the 8 pin is absolutely something AMD should market, until most people have power supplies with native 12 pin connectors. It's important for people to know that a product is natively supported by their hardware, especially during a transition period, and a dongle coming in the box simply isn't the same thing EVEN IF said dongle works properly and there are no issues (compare USB C dongles). The additional cognitive load of understanding and planning for 3 8 pin connectors instead of a single 12 pin connector is a potential stumbling block for even relatively experienced system builders if they're working fast and not paying attention. Being first to market with a new standard isn't actually a good thing, and sticking with an older, more reliable standard that your customers actually have already is a marketable benefit.
(Remember I'm playing devil's advocate, I do sort of believe this but I also agree AMD's kind of taking credit for doing nothing here)
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Devil's advocate: the 8 pin is absolutely something AMD should market, until most people have power supplies with native 12 pin connectors. It's important for people to know that a product is natively supported by their hardware, especially during a transition period, and a dongle coming in the box simply isn't the same thing EVEN IF said dongle works properly and there are no issues (compare USB C dongles). The additional cognitive load of understanding and planning for 3 8 pin connectors instead of a single 12 pin connector is a potential stumbling block for even relatively experienced system builders if they're working fast and not paying attention. Being first to market with a new standard isn't actually a good thing, and sticking with an older, more reliable standard that your customers actually have already is a marketable benefit.
(Remember I'm playing devil's advocate, I do sort of believe this but I also agree AMD's kind of taking credit for doing nothing here)
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wtfusername
Type-C on the card is great for artists and anyone who uses a graphics tablet! They often use HDMI if there is no Thunderbolt or alt-display type C available, so for anyone who draws, it basically frees up the HDMI, and/or means you can skip a thunderbolt motherboard. Needing/wanting a thunderbolt compatible mobo really limits options.
Specifically for me, my good monitor doesn't support advanced color spaces on displayport, only HDMI, so a type-c on the graphics card lets me plug in my drawing tablet, and use the HDMI for reference/preview. Or watching movies and stuff lol. I've been looking at the thunderbolt compatible motherboards, and some of the USB 4 options, but they're often much more expensive, rarely available in my preferred matx, and, I quite like my current motherboard.
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Type-C on the card is great for artists and anyone who uses a graphics tablet! They often use HDMI if there is no Thunderbolt or alt-display type C available, so for anyone who draws, it basically frees up the HDMI, and/or means you can skip a thunderbolt motherboard. Needing/wanting a thunderbolt compatible mobo really limits options.
Specifically for me, my good monitor doesn't support advanced color spaces on displayport, only HDMI, so a type-c on the graphics card lets me plug in my drawing tablet, and use the HDMI for reference/preview. Or watching movies and stuff lol. I've been looking at the thunderbolt compatible motherboards, and some of the USB 4 options, but they're often much more expensive, rarely available in my preferred matx, and, I quite like my current motherboard.
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Joe
One thing about GPU and system RAM: it's likely the GPU can get to system RAM via DMA, Direct Memory Access. It does require a traffic cop like a CPU to tell where from RAM to read from, but that's a tiny amount of bandwidth compared to the data in system RAM. Otherwise, you are pretty close.
Culling is a great place to optimize. It's so common in GPU rendering. Also, AMD said another advantage of chiplets is that it greatly reduces R&D costs. We can easily say it's worth millions of R&D savings alone, plus it free engineers to work on logic. They can work on making a new I/O chiplet ever x generation instead of every single one
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One thing about GPU and system RAM: it's likely the GPU can get to system RAM via DMA, Direct Memory Access. It does require a traffic cop like a CPU to tell where from RAM to read from, but that's a tiny amount of bandwidth compared to the data in system RAM. Otherwise, you are pretty close.
Culling is a great place to optimize. It's so common in GPU rendering. Also, AMD said another advantage of chiplets is that it greatly reduces R&D costs. We can easily say it's worth millions of R&D savings alone, plus it free engineers to work on logic. They can work on making a new I/O chiplet ever x generation instead of every single one
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KonradGM
I'm most interested in software from both NVidia and AMD. Sadly new games due to change of rendering, often need to rely on shitty post processing effects, where i feel although grpahics got better, they actually look worse and are more eye straining than before. Kinda makes me feel how when i first time plugged my 360 from crv to flat screen where i expected stuff to look a lot better but it appeared a lot worse. So i feel stuff like DSR / VSR is almsot required.. hopning with DLSAA and some AMD alternative soon we will see a new era of anti aliasing soon to come..
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I'm most interested in software from both NVidia and AMD. Sadly new games due to change of rendering, often need to rely on shitty post processing effects, where i feel although grpahics got better, they actually look worse and are more eye straining than before. Kinda makes me feel how when i first time plugged my 360 from crv to flat screen where i expected stuff to look a lot better but it appeared a lot worse. So i feel stuff like DSR / VSR is almsot required.. hopning with DLSAA and some AMD alternative soon we will see a new era of anti aliasing soon to come..
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Colin
All I need to know at this point is whether or not Steve and the rest of GN are excited about RDNA3 and it's potential. Not from the perspective of reviews, making content etc. Just whether or not you guys have seen or heard things that have you excited about how RDNA3 is gonna match up. Obviously it's not going to be anywhere near as good as far as RT goes but that's perfectly fine by me. I'm seriously considering a 7900xtx to replace my EVGA 3080 ftw3 ultra. After EVGA leaving the gpu market I kind of just want to put it on display to remember the good ole days.
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All I need to know at this point is whether or not Steve and the rest of GN are excited about RDNA3 and it's potential. Not from the perspective of reviews, making content etc. Just whether or not you guys have seen or heard things that have you excited about how RDNA3 is gonna match up. Obviously it's not going to be anywhere near as good as far as RT goes but that's perfectly fine by me. I'm seriously considering a 7900xtx to replace my EVGA 3080 ftw3 ultra. After EVGA leaving the gpu market I kind of just want to put it on display to remember the good ole days.
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beep2bleep
I hate tat they made this great standard of quality but don't have a number or year on it. This should be AMD Advantage Desktop 7000 or 2023 so they can make a new version next time. I love the idea of setting a floor on prebuilts. I think this would probably be something like 1000 but I'd love to have different companies compete over who can give you the cheapest AMD Advantage desktop XXX as these seem like a really good base line. Everyone has tried this and then dropped it later, I expect this strategy to last for about 18 months.
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I hate tat they made this great standard of quality but don't have a number or year on it. This should be AMD Advantage Desktop 7000 or 2023 so they can make a new version next time. I love the idea of setting a floor on prebuilts. I think this would probably be something like 1000 but I'd love to have different companies compete over who can give you the cheapest AMD Advantage desktop XXX as these seem like a really good base line. Everyone has tried this and then dropped it later, I expect this strategy to last for about 18 months.
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Plasmaburndeath
One thing I would like someone to cover is the link between Concrete and Silicon, both rely on SAND, and our planet is using up the supply of easily accessible sand, on concrete side there are some work arounds being worked on, like manufacturing, faking sand, but manmade sand isn't as good as natural sand for several concrete formulas. Now yes our planet is 27.7% made of Silicon by mass, but only so much in nice cheap easy to use Sand, once we run out, that's it, cheap electronics game over unless we work on a Plan B,C,D,....
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One thing I would like someone to cover is the link between Concrete and Silicon, both rely on SAND, and our planet is using up the supply of easily accessible sand, on concrete side there are some work arounds being worked on, like manufacturing, faking sand, but manmade sand isn't as good as natural sand for several concrete formulas. Now yes our planet is 27.7% made of Silicon by mass, but only so much in nice cheap easy to use Sand, once we run out, that's it, cheap electronics game over unless we work on a Plan B,C,D,....
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Chuu
1:20 I'd just like to say not to encourage them to release even less information. As an OpenGL developer, the level of architecture disclosure is already far lower than I'd like, and it seems to decrease with every generation. Long gone are the days when Intel used to scream all of their cool new architectural features from the rooftops in interesting papers. Rather it seems that every hardware manufacturer is holding their cards ever tighter to their chests, and that is very much my nomination for the Worst Trend category.
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1:20 I'd just like to say not to encourage them to release even less information. As an OpenGL developer, the level of architecture disclosure is already far lower than I'd like, and it seems to decrease with every generation. Long gone are the days when Intel used to scream all of their cool new architectural features from the rooftops in interesting papers. Rather it seems that every hardware manufacturer is holding their cards ever tighter to their chests, and that is very much my nomination for the Worst Trend category.
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Dan
The MCD for this makes me think of how this might help the Ryzen. I wonder if it would hurt or help Ryzen to either eliminate the L3 cache per CCD and put the L3 on the memory controller like an MCD or eliminate the per core L2 and make the current L3 into a shared L2 per CCD and have the L3 on an MCD. Then instead of an IO die on the package, have an MCD and a separate IO die that would just have the PCIe and USB/SATA controllers separate that can be done with older manufacturing processes. What do you guys think?
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The MCD for this makes me think of how this might help the Ryzen. I wonder if it would hurt or help Ryzen to either eliminate the L3 cache per CCD and put the L3 on the memory controller like an MCD or eliminate the per core L2 and make the current L3 into a shared L2 per CCD and have the L3 on an MCD. Then instead of an IO die on the package, have an MCD and a separate IO die that would just have the PCIe and USB/SATA controllers separate that can be done with older manufacturing processes. What do you guys think?
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CHIEFISREAL
Do AMD drivers finally support V sync globally on all backends? Forget advanced features like ray tracing and DLSS. I need AMD to have basic features that Intel and nvidia have had for well over a decade like driver level vSync that's actually useful instead of open GL only. Some games are whack and need to have V sync forced externally either because they don't have it or their implementation is bad. And adaptive sync projectors don't exist before anyone says that, I wish they did.
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Do AMD drivers finally support V sync globally on all backends? Forget advanced features like ray tracing and DLSS. I need AMD to have basic features that Intel and nvidia have had for well over a decade like driver level vSync that's actually useful instead of open GL only. Some games are whack and need to have V sync forced externally either because they don't have it or their implementation is bad. And adaptive sync projectors don't exist before anyone says that, I wish they did.
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jwar
All I want to know is can these new cards from AMD the RX7900 XTX and or the RX7900XT work for drafting design software as I do both design custom cabinets, alone with CNC woodworking design and I game. My RTX2070 card works for both and I am ready to upgrade to a newer setup as my Intel CPU keeps throttling me while either drawing and rendering in 3d and or when hardcore gaming. Went to Intel because it was faster at the time than AMD, but going back and Tired of the Nvidia price gouging.
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All I want to know is can these new cards from AMD the RX7900 XTX and or the RX7900XT work for drafting design software as I do both design custom cabinets, alone with CNC woodworking design and I game. My RTX2070 card works for both and I am ready to upgrade to a newer setup as my Intel CPU keeps throttling me while either drawing and rendering in 3d and or when hardcore gaming. Went to Intel because it was faster at the time than AMD, but going back and Tired of the Nvidia price gouging.
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Alex
AMD Chill is one of the features I feel like I'm the only one in the world that uses it - and likes it. I don't need my VGA running a cinematic at 600 billion FPS, nor I need the card to be always running 110% all the time. If I AFK or the likes, I have no problems with the card dropping to 60FPS (if not more), and for that, AMD Chill is perfect to counterbalance the abuse the card is under - except it is already very well refrigerated via an oversized liquid loop.
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AMD Chill is one of the features I feel like I'm the only one in the world that uses it - and likes it. I don't need my VGA running a cinematic at 600 billion FPS, nor I need the card to be always running 110% all the time. If I AFK or the likes, I have no problems with the card dropping to 60FPS (if not more), and for that, AMD Chill is perfect to counterbalance the abuse the card is under - except it is already very well refrigerated via an oversized liquid loop.
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sphaera
This is all very nice, but in my case, all I care is FPS and how it performs playing Star Citizen - yes, I know, but that's the only game I play... If it beats my 4080 by more than 10%, I'll consider a 7900 XTX, if not, I'll wait for what's next or go crazy and get a 4090 when they come back in stock. I use Cyberpunk as a reference. I'm waiting for the embargo to lift and check out your performance data. Got to see those bar charts! ;-)
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This is all very nice, but in my case, all I care is FPS and how it performs playing Star Citizen - yes, I know, but that's the only game I play... If it beats my 4080 by more than 10%, I'll consider a 7900 XTX, if not, I'll wait for what's next or go crazy and get a 4090 when they come back in stock. I use Cyberpunk as a reference. I'm waiting for the embargo to lift and check out your performance data. Got to see those bar charts! ;-)
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bill
Looking to finally upgrade my GTX 970. I currently have an Acer XB270 HU that has Gsync and is a 144hz monitor. Ive always felt I had to stick with Nvidia because of the Gsync and with prices the way they are I d probably be looking 30 series at this point. With cards as good as they are and the fact that I ll be at 1440 max, could I get a new AMD card and not have to worry about needing Gsync anymore or should I still stick with Nvidia?
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Looking to finally upgrade my GTX 970. I currently have an Acer XB270 HU that has Gsync and is a 144hz monitor. Ive always felt I had to stick with Nvidia because of the Gsync and with prices the way they are I d probably be looking 30 series at this point. With cards as good as they are and the fact that I ll be at 1440 max, could I get a new AMD card and not have to worry about needing Gsync anymore or should I still stick with Nvidia?
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Alexis
It s interesting to go through this video and see some of the new information that could get interpreted as pluses for 3D artists and (hobbyist) game devs like me, who don t have all that much money for the newest 4090s and things like that. Seems like AMD could finally become the next big thing for people who do high-usage rendering and baking and game development rather than just gaming.
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It s interesting to go through this video and see some of the new information that could get interpreted as pluses for 3D artists and (hobbyist) game devs like me, who don t have all that much money for the newest 4090s and things like that. Seems like AMD could finally become the next big thing for people who do high-usage rendering and baking and game development rather than just gaming.
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