Before you buy the AMD 7900 XTX..

it's finally time for some competition Nvidia has had a few month head start with their 4080 and 4090 allowing them to basically charge whatever they want but now it's time for AMD the new Radeon 7900 XT and XTX they aim to undercut the pricing of nvidia's heavyweight gpus while still offering Enthusiast performance at 4K and in a smaller and more digestible package for the consumer today we'll be putting the top of the stack RX 7900 XTX priced at a thousand dollars against the RTX 4080 and the 4090 and on paper it's looking pretty good so far in typical AMD fashion we get more video memory than what Nvidia has to offer and in this case faster memory as well and although it's an apples to oranges comparison 96 compute units is the most that AMD has ever stacked onto a GPU now a quick look at the test bench here we've got a ryzen 5800 X 3D and 36 gigabytes of 3600 megahertz memory and a beefy power supply as well I will note that as usual I've tested with smart Access Memory AK resizable bar disabled for these tests and that gives us a more even comparison between these gpus so the performance that you're about to see is completely stock out of the box performance with fresh driver installs and that's it without further Ado let's see how fast this thing actually is and against the RTX 4080 in Modern Warfare 2 the new 7900 XTX gives Nvidia an absolute beating at 1440p the AMD card is 23 faster on average here while being 200 cheaper even when we add the 4090 into the picture a 600 more expensive GPU the 7900 XTX is keeping up extremely well so far things are looking pretty good for the AMD card but the games aren't always this impressive in Forza Horizon at 4K completely maxed out the 4080 and the new 7900 XTX are basically equal at the end of The Benchmark run here both average around 134 FPS but the new AMD card does that while costing 200 less and that's really the match up here right 4080 versus 7900 XTX if you were expecting the new AMD Flash ship to beat nvidia's 1490 while costing 600 less unfortunately that just isn't happening here in God of War again at 4K the 4080 and 7900 XTX are basically tied in performance with the 4090 being about 40 faster than both of them again though factoring value into the equation the new AMD Flagship is putting up extremely confident performance then in Red Dead Redemption 2 4K High settings 4080 and 7900 XTX are virtually tied again looking at them side by side but at the end of The Benchmark run the AMD card is actually eight percent faster now I think before these results many would expect close to 40 90 performance with the XTX but evidently the 4090 is in a completely different league and as it should be because it is 600 more expensive so let's take a look at the average then across 12 games at 4K between the 4080 and the 7900 XTX as you can see it's a tough battle AMD Winsome and video wins some others for the most part though you're getting pretty similar performance now if we convert this graph 2 percentages we can see what's happening here a little bit clearer and yeah the 4080 and 7900 XTX they're virtually equal while the 4080 averaged 124 FPS across 12 games at 4K the new AMD GPU managed 123.4 so basically it's the same performance being 200 cheaper though that of course makes it the better pick over the 4080. essentially you're paying less for the same performance on average I think 40 90 owners though are feeling pretty comfortable and again it's a much more expensive GPU so it should be much much faster and across the same 12 games it is on average I found the 4090 to be 37 faster than amd's new flagship and although the cost per frame is better than the 4080 the 7900 XTX is the better value option especially when you take a look at Modern Warfare 2 or war zone 2 for that matter which is the most popular game in this graph at the moment the 7900 XTX is looking pretty damn good for the money so 7900 XTX versus 4080 it's looking like a pretty clean sweep but there's something else that we should factor into the equation here and that's power how much power these gpus are chugging back while spinning out all of these frames is really important to consider and I see you guys in the comments this is something that people are really beginning to care about by now we've seen these massive new cooler designs from Nvidia to deal with all of the heat output as well as the stories of the new 16-pin adapter melting AMD on the other hand the new XTX is much much smaller and only uses two eight pin connectors but this is where things get really interesting here we're looking at total system power draw from the wall but since we've used the same test bench for both gpus that's where the differences are coming from White is the 4080 and orange is the new 7900 XTX and in dumateral at 4K it's actually the AMD GPU that pulls about 40 Watts more than we have God of War also at 4K differences are a little bit closer here but still the AMD GPU surprisingly pulls more power but then we take a look at OverWatch 2 at 1440p the 4080 sips power in this title as it should but the AMD card is flat on the gas pulling 150 watts more for anomalies like this you obviously go back and test multiple times which I did but I kept getting the same results probably more concerning though is what happens when you're just idling on the desktop they're the AMD card again just randomly pulls so much power for no reason at all here it chugs back an extra 80 Watts over the 4080 while it does nothing and looking at some of the monitoring software we can see that it pulls close to 100 Watts again this is complete idle desktop use even after a fresh restart hopefully it's something that AMD can fix quickly because it's simply unacceptable somewhere else where the 4080 has an advantage though is when it comes to Ray tracing performance here we're looking at control at 4K with Ray tracing crank to the max but without any upscaling techniques like dlss or FSR essentially what we're looking at here is how much of an impact retracing has on these gpus and you can see it has less of an impact when we switch it on for the 4080. now the 4080 is the faster GPU in this title without retracing but the margin grows from about 8 to around 30 percent when we turn Ray tracing on so it's basically a sweep for the 4080 if you like playing with Ray tracing on I mean here in Doom Eternal with 4K and RT on the margin is almost 40 for the RTX 4080 over the new 7900 XTX which does lead to a pretty massive frame rate difference long story short the ray tracing capabilities of the 4080 are significantly ahead of the 7900 XTX while in non-retraced games the two are practically even switching Ray tracing on does make the 4080 look like the 200 more expensive GPU that it actually is but an area where AMD has caught up to Nvidia surprisingly his video encoding so if you do a bit of streaming and you're looking for the best quality possible the matchup is actually pretty close which is surprising because historically this is where Nvidia has led undefeatedly both the new AMD and Nvidia gpus feature av1 encoding support which gives a huge boost to visual quality and playing them side by side here I mean it's actually impossible to tell the difference the rtx40 here is on the left and the 7900 XTX is on the right and as far as stream quality goes they're both incredibly good both of them look better than 99 of twitch streams that you'll see today and that's thanks to the new av1 support in fact even pausing some frames here and comparing them side by side sometimes Nvidia looks better but sometimes AMD looks better it really just depends on what frame you're looking at I was actually convinced that Nvidia would still be ahead here despite AMD adding av1 support but that's actually not the case amd's ev1 encoding looks virtually identical to nvidias maybe Nvidia looked slightly better over more comparisons but it's so damn close especially if you're playing in real time but until OBS actually add support for ev1 for streaming which supposedly is late this year or early next year you'll be stuck with h.264 encoding on either GPU and that's where there really is a massive difference amd's h.264 encoding there's no nice way to say it it's basically trash now for whatever reason it's just a blurry mess compared to what nvidia's looks like there's no need to zoom in here because the difference is pretty clear the performance overhead while streaming on a 4080 or a 7900 XTX though is about even which is surprising because the 4080 has two video encoded chips whereas the AMD card only has one so I'm not sure if OBS is fully taking advantage of the two chips that the 4080 actually has before that's worth both see pretty much the same minimal difference while streaming and gaming at the same time video editing in DaVinci Resolve is also pretty good on the 7900 XTX and specifically looking at export speeds here although there's no ev1 support for AMD it still manages to beat the 4080 while using h.265 in the end it's about six percent faster though I also checked the actual rendered videos and kind of just examined the quality of the two and you know the differences were pretty minuscule to say the least to the untrained eye both look identical and even when looking at the waveforms and the histograms between the two which shows you the objective color data there was almost no difference to speak of there are some slight differences when it comes to the saturation and the Hue but that's mostly a difference between av1 and h.3 65 rather than AMD and Nvidia I will say though Nvidia is still the undoubted pick for 3D professionals blender showed the 7900 XTX to be about on par with a 3080 which doesn't look good at all I'll also mention that some renderers just simply won't accept an AMD GPU so for 3D work Nvidia is still the most sensible pick now quick note on thermals after 40 minutes in firm Mark the 7900 XTX settled in at 68 degrees and 350 Watts with the room ambient at 23. Pretty good overall but with that much heat load you'll definitely need a well ventilated case I know I've shown previously how you can cram this thing into some pretty small cases but you'll 100 want to give this thing some active calling cramming it into a Sentry 2.0 or at the bottom of an end case M1 for example I don't know if that's the best idea for a two and a half slot cooler though on an Open Bench it's pretty damn good all right so closing thoughts if AMD can fix the weird power consumption on this card when at idle and at 1440p then it's a decent alternative over the RTX 4080. that's also if you don't care about retracing performance 3D work and dlss frame generation on the 40 series and if you're more focused on is getting as much value out of your frame rates as possible because yeah roughly equal rasterization performance at 200 cheaper that's a pretty good deal again though the aggressive power consumption needs to absolutely be fixed at idle and for 1440p gaming especially when AMD present themselves as the more power efficient alternative it's just really weird to see that but I'd love to know what you guys think down below as always a huge thanks for watching and I'll see you all in the next one

Channel: optimum

Views: 410,915

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Id: tMH9vfvos00

Length: 10min 43sec (643 seconds)

Published: Mon Dec 12 2022