Poll: Ryzen 7950X3D, 7900X3D, 7800X3D

[Iron Man]

Curious if anyone who is primarily a gamer will want to buy the 12 or 16 core 7x3d version? Not sure how much faith I have that these will preferentially use the X3D cores for gaming without issue.

 

[LtMatt]

Curious if anyone who is primarily a gamer will want to buy the 12 or 16 core 7x3d version? Not sure how much faith I have that these will preferentially use the X3D cores for gaming without issue.

I’m almost certainly getting the 7950 X3D and I will only be gaming. However, one of my main games is Football Manger and this game loves cores and will use every core you can throw at it to process matches around the world, speeding up the game And less time waiting for these matches and stats to be calculated.

 

[Bencher]

I’m almost certainly getting the 7950 X3D and I will only be gaming. However, one of my main games is Football Manger and this game loves cores and will use every core you can throw at it to process matches around the world, speeding up the game And less time waiting for these matches and stats to be calculated.

Does it actually scale to 16 cores though? Thats nuts.

 

[Bencher]

Oh what, i just bought a 8c/16t CPU and now that's not going to be enough?

It depends on which 8/16 cpu you bought.

 

[GoogalyMoogaly]

I’m almost certainly getting the 7950 X3D and I will only be gaming. However, one of my main games is Football Manger and this game loves cores and will use every core you can throw at it to process matches around the world, speeding up the game And less time waiting for these matches and stats to be calculated.

Does it make use of the 3D cache?

 

[humbug]

Not sure data would agree here as I it's easy to do additional testing and get actual info vs speculation.

Here's HT off and Ecores off. So only 6 threads.

Here's HT ON and Ecores off. 12 threads.

Here's HT on and Ecores on. 20 threads.

My actual daily config: Ecores on HT off due to better frames times that you quoted is 120.

If you have good cores that are well tuned, 6 + HT is going to be plenty for even resource heavy games for now. I'm sure it'll change but that's not today.

You have 85% load with 6 thread and 107 FPS, 75% load with 12 threads 118 FPS and 70% load with 20 threads and 122 FPS.

Yeah that doesn't make any sense, your frame rates are barely changing with higher CPU threads, which by its self is perfectly normal, but your CPU load also changes little despite adding more threads to it. That's anything but normal.

So its like you have gone from 100% CPU cycles at 107 FPS to 300% CPU cycles at 122 FPS for no apparent reason.
What's going on there?

 

[Dave2150]

Swapped my 4090 back to my 13900k rig, to test in the exact same spot (though different time of day, still loads of NPC's roaming around)

R5 7600 @ 5.35Ghz



13900K @ stock (undervolt)



Couldn't get the 13900k to go below 68FPS in this area, obviously feels much smoother as well.

Can't wait to test on Zen4 X3D when they launch, I'd like to see how much of a difference a 8, 12 or 16 core Zen4 makes in this specific building (Tom's Diner). I assume I can easily disable cores if I go for the 7950X3D, to simulate a 8 or 12 core etc?

 

[humbug]

Swapped my 4090 back to my 13900k rig, to test in the exact same spot (though different time of day, still loads of NPC's roaming around)

R5 7600 @ 5.35Ghz



13900K @ stock (undervolt)



Couldn't get the 13900k to go below 68FPS in this area, obviously feels much smoother as well.

Can't wait to test on Zen4 X3D when they launch, I'd like to see how much of a difference a 8, 12 or 16 core Zen4 makes in this specific building (Tom's Diner). I assume I can easily disable cores if I go for the 7950X3D, to simulate a 8 or 12 core etc?

On the 13900K rig your GPU load is a chunk lower prior to taking that screen shot. Looks like about 75% load on the GPU. left side bottom of task manager, see the graph.

Clearly there is bottleneck there somewhere before you took that screen shot.

 

[Bencher]

Swapped my 4090 back to my 13900k rig, to test in the exact same spot (though different time of day, still loads of NPC's roaming around)

R5 7600 @ 5.35Ghz



13900K @ stock (undervolt)



Couldn't get the 13900k to go below 68FPS in this area, obviously feels much smoother as well.

Can't wait to test on Zen4 X3D when they launch, I'd like to see how much of a difference a 8, 12 or 16 core Zen4 makes in this specific building (Tom's Diner). I assume I can easily disable cores if I go for the 7950X3D, to simulate a 8 or 12 core etc?

How did you make it drop to 68? What ram are you using? That's weird

 

[Dave2150]

On the 13900K rig your GPU load is a chunk lower prior to taking that screen shot. Looks like about 75% load on the GPU. left side bottom of task manager, see the graph.

Clearly there is bottleneck there somewhere before you took that screen shot.

I was tabbed out, so GPU usage should be ignored, other than in the screenshot showing 99%. In game it's pegged @ 99%

It was late so didn't have time to stand there for the benefit of filling the graphs in task manager, though may do so today after work

 

[Dave2150]

How did you make it drop to 68? What ram are you using? That's weird

4K ultra, RT Ultra, HDR10+. Think you're running 1440P?

Ram is Gskill 6600Mhz C34 on 13900k, Corsair Dominator 6000Mhz C30 on Ryzen 5 7600 (now clocked at 5.4Ghz)

I just wanted to compare the same spots at the same settings that I actually play with.

 

[Bencher]

4K ultra, RT Ultra, HDR10+. Think you're running 1440P?

Ram is Gskill 6600Mhz C34 on 13900k, Corsair Dominator 6000Mhz C30 on Ryzen 5 7600 (now clocked at 5.4Ghz)

I just wanted to compare the same spots at the same settings that I actually play with.

Uh, i didnt see the gpu usage. How much faster is the 13900k when you remove the gpu bottleneck? Say you drop resolution or somethinng.

 

[LtMatt]

With the help of @stooeh he provided me a manual save file near Cherry Blossom Market, so I tested the 7950X there (I had SMT disabled as I normally do so not sure if that helps or hinders performance in this game) and again at 720P Ultra RT preset but with FSR off I could not get GPU usage to drop below 99%.

@Poneros You might find this interesting...

 

[Dave2150]

Uh, i didnt see the gpu usage. How much faster is the 13900k when you remove the gpu bottleneck? Say you drop resolution or somethinng.

Will try lower resolution after work

 

[Dave2150]

With the help of @stooeh he provided me a manual save file near Cherry Blossom Market, so I tested the 7950X there (I had SMT disabled as I normally do so not sure if that helps or hinders performance in this game) and again at 720P Ultra RT preset but with FSR off I could not get GPU usage to drop below 99%.

@Poneros You might find this interesting...

7950X looking much more capable than my 7600 there (though to be expected). Using 67% of all 16C/32T is something.. Demanding game.

Could you test 4k ultra, R5 ultra in the same area? Different GPU's, but interested in the CPU's behavior here, compared to my 7600.

 

[LtMatt]

7950X looking much more capable than my 7600 there (though to be expected). Using 67% of all 16C/32T is something.. Demanding game.

Could you test 4k ultra, R5 ultra in the same area? Different GPU's, but interested in the CPU's behavior here, compared to my 7600.

I have SMT off, so its using 16 threads only. Maybe I should enable SMT and rerun it, but I doubt too much will change other than CPU utilisation will drop.

Interestingly Horizon Zero Dawn, which is the opposite of this and favours Ryzen CPUs vs Intel CPUs, shows the same behaviour. I see 70% CPU utilisation at 1440P max settings with SMT off, but that drops to 40% or so with SMT enabled.

4K Ultra with FSR? Otherwise the FPS are going to be so low it'll be painful. The CPU won't have much to do at 4K if I can't get CPU limited at 720P.

 

[timorous]

I’m almost certainly getting the 7950 X3D and I will only be gaming. However, one of my main games is Football Manger and this game loves cores and will use every core you can throw at it to process matches around the world, speeding up the game And less time waiting for these matches and stats to be calculated.

That is a good shout for a game that really should be in a CPU benchmark suite. Also another example where 'GPU is all that matters for 4K' is totally BS.

 

[Deleted User 456458]

I’ll put together a bench scenario for Spider-Man with RT tonight and share. That should be another good cpu test case.

 

[Dave2150]

I have SMT off, so its using 16 threads only. Maybe I should enable SMT and rerun it, but I doubt too much will change other than CPU utilisation will drop.

Interestingly Horizon Zero Dawn, which is the opposite of this and favours Ryzen CPUs vs Intel CPUs, shows the same behaviour. I see 70% CPU utilisation at 1440P max settings with SMT off, but that drops to 40% or so with SMT enabled.

4K Ultra with FSR? Otherwise the FPS are going to be so low it'll be painful. The CPU won't have much to do at 4K if I can't get CPU limited at 720P.

I'm using 4K ultra, DLSS on quality, so the AMD version of that I guess.

There's been talk that RT calculations at 4K put extra strain on the CPU, as this area (stand in Tom's Diner, can see the room layout/doorday on minimap in my screenshots) is so demanding.

 

[LtMatt]

I'm using 4K ultra, DLSS on quality, so the AMD version of that I guess.

There's been talk that RT calculations at 4K put extra strain on the CPU, as this area (stand in Tom's Diner, can see the room layout/doorday on minimap in my screenshots) is so demanding.

I don't know where Toms diner is, but my save file is right by Cherry Blossom Market so I can test in that area again.