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AMD CPU's worse at raytracing?

NirK

NirK

NirK

Soldato
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I noticed that Cyberpunk and Spiderman do a lot worse on Zen 4 compared to Intel, I also had a look at other RT games and in a lot of those the AMD CPU's are similar or faster than Intel, but in Cyberpunk and Spiderman the AMD CPU's do a lot worse, also minimum FPS in Hitman 3 and Crysis 3 remastered are significantly worse on AMD.

Is there something inherant to AMD / Zen 4 that is going to make it weaker in RT games in the future? As RT is going to be used more in future, will AMD start falling behind Intel in CPU performance? Or is it a coincidence that these 2 games run badly on AMD and not related to RT?

I am interested in the new AMD CPU's coming out but this bad performance in those games is making me a bit worried that I might end up regretting it over the next few years as more games use RT, or it could be that these 2 games are just worse on AMD for other reasons, although I have not seen AMD lose that much to intel on other games that do not involve RT. Overall I am not sure.

RT games that I checked on reviews :

Spiderman + Cyberpunk = Significantly worse on Zen 4 vs Intel

Crysis 3 remaster, Hitman 3 = Significantly worse minimum FPS on Zen 4

Control, Metro Exodus, F1 22, Watch Dogs Legion, Dying light 2, Far Cry 6 = Zen 4 is similar or faster than Intel

Can anyone more knowledgeable than me answer this quesion?
 
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Well for Cyberpunk and Spiderman it is indisputable that AMD are slower, there are various threads about it, for the other ones I am not sure what GPU was used, but would have been a good one. Also same GPU used for all CPU's so it would not make any difference to the results.
 
NirK said:
Also same GPU used for all CPU's so it would not make any difference to the results.
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that what i was getting at..

NirK said:
Well for Cyberpunk and Spiderman it is indisputable that AMD are slower
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it will most likely just be down to the game engine been optimised for intel

also if this is youtube, remember some have advertising deals and have been shown to nurf results in the past with ram speeds and or other things.
but i feel it safe to say intel is gaming king right now, so it go's without saying its faster
 
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Skilid said:
but at the cost of high energy consumption and worse value
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i agree with you, but that's not always what matters.

an extra 50w for 3hr a day 4 or 5 days a week. what is the real world difference? £5 a month ish?
 
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Yes but I am interested in the new 3D Zen 4 coming out soon, this might be possibly better or very close to intel.

I was almost completely decided to go for the new 3D zen 4, but reading about possible issues with RT is making me a bit worried and maybe I should go for intel.
 
You can get a Ryzen 7 5700X for not much more then a Core I5 12400F now. I expect the Ryzen 7 will be faster most of the time. Also it wouldn't surprise me it could be an Nvidia driver issue,so would need testing with different graphics cards.
 
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The AMD are a very nice option when it comes to practical things such as platform lifespan and NVME 5.0 etc.

But at the end of the day if the performance is going to have problems in future due to RT, then that would be something that would make me want to go for intel instead.
 
NirK said:
Yes but I am interested in the new 3D Zen 4 coming out soon, this might be possibly better or very close to intel.
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but you cant base you CPU choice on a completely different chip.
thats like buying intel because the 12700k is better than a 2700x, so im not going to buy a 7700x3d

the chips your not talking about are not in the benchmarks your refiring to so the info is meaningless.
also can we please see a link to the testing your refiring to
 
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Why would it be locked?

I am just asking a question, although my title does sound like I am saying they are worse.

... There we go I added a ? to title lol.
 
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NirK said:
I noticed that Cyberpunk and Spiderman do a lot worse on Zen 4 compared to Intel, I also had a look at other RT games and in a lot of those the AMD CPU's are similar or faster than Intel, but in Cyberpunk and Spiderman the AMD CPU's do a lot worse, also minimum FPS in Hitman 3 and Crysis 3 remastered are significantly worse on AMD.

Is there something inherant to AMD / Zen 4 that is going to make it weaker in RT games in the future? As RT is going to be used more in future, will AMD start falling behind Intel in CPU performance? Or is it a coincidence that these 2 games run badly on AMD and not related to RT?

I am interested in the new AMD CPU's coming out but this bad performance in those games is making me a bit worried that I might end up regretting it over the next few years as more games use RT, or it could be that these 2 games are just worse on AMD for other reasons, although I have not seen AMD lose that much to intel on other games that do not involve RT. Overall I am not sure.

RT games that I checked on reviews :

Spiderman + Cyberpunk = Significantly worse on Zen 4 vs Intel

Crysis 3 remaster, Hitman 3 = Significantly worse minimum FPS on Zen 4

Control, Metro Exodus, F1 22, Watch Dogs Legion, Dying light 2, Far Cry 6 = Zen 4 is similar or faster than Intel

Can anyone more knowledgeable than me answer this quesion?
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Don't forget Horizon Zero Dawn, that favours AMD CPUs too.

With regards to Cyberpunk/Spiderman, just disable SMT as it causes a 10%+ performance regression on AMD CPUs for some reason. The developers just need to fix their games, although development has probably stopped now. If the tests were rerun without SMT, sure the Intel CPUs would be faster but the gap would not be as large as it is now.
 
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Does Horizon ZD even have RT though? I only picked games with RT, to see if there was a common problem on AMD CPU with RT.

Also is it simple to switch of SMT? It would be really irritating going into bios every time, or can you leave it switched off for everything? Does SMT improve performance in some games or is it consistantly the same or worse?
 
NirK said:
Does Horizon ZD even have RT though? I only picked games with RT, to see if there was a common problem on AMD CPU with RT.

Also is it simple to switch of SMT? It would be really irritating going into bios every time, or can you leave it switched off for everything? Does SMT improve performance in some games or is it consistantly the same or worse?
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Turning off SMT (in BIOS) improves CPU perf for me with a 5800X3D like Matt said in Spiderman but it makes it worse in Cyberpunk so not ideal :p
 
There are probably a lot of red herrings in all of this. I'm sure if you link specific benchmarks we could pick them apart.

Zen 4 does have a slight disadvantage for single/low thread peformance and latency. Which is not helped by some benchmark sites using lower speed memory on AMD "because thats the supported spec". Perhaps RT CPU load is more sensitive to this?

RT is also shown to increase load on CPU beyond 12 threads, so 6 and 8 core Ryzens start to get disadvantaged (one area where 5800X3D doesn't look that good)

Game/driver optimisation. Cyberpunk without RT is already favoring Intel 13th gen.

But there is no inherent reason why specifically RT should be slower on AMD.
 
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