AMD Radeon Vega 64 Outperforms NVIDIA GTX 1080 Ti in Forza Motorsport 7, DX 12

[anubis44]

Another one to the collection of games where Vega is competitive, it now contains two games.

Vega is 'competitive' in all games. It beats the 1080 Ti in two so far, that have been optimized properly.

I wouldn't hold my breath on that....

Not holding any breath! LOL. Just happy with my R9 290 is all.

 

[sneekypeet]

Vega is 'competitive' in all games. It beats the 1080 Ti in two so far, that have been optimized properly.

Not holding any breath! LOL. Just happy with my R9 290 is all.

Multiple posts are frowned upon. Please learn to edit or use the multi-quote feature.
https://www.techpowerup.com/forums/...osts-and-use-the-multi-quote-features.234427/

 

[anubis44]

Multiple posts are frowned upon. Please learn to edit or use the multi-quote feature.
https://www.techpowerup.com/forums/...osts-and-use-the-multi-quote-features.234427/

OK, I'll learn to respond to 5 people in one reply.

Personally, I find it less likely that someone will go digging through a reply with multiple quotes and to be read than a reply to each person individually, but the terrifying fear of the 'double-post' seems to have gripped some people pretty hard, so I'll try to remember the 'rules' on this site.

 

[EarthDog]

OK, I'll learn to respond to 5 people in one reply.

Personally, I find it less likely that someone will go digging through a reply with multiple quotes and to be read than a reply to each person individually, but the terrifying fear of the 'double-post' seems to have gripped some people pretty hard, so I'll try to remember the 'rules' on this site.

Sure beats a wall of [Insert user here] posts.

Thanks for learning.

 

[RejZoR]

@anubis44
Well, we know how much care they take when porting games from "console" PC's to actual PC's...

 

[Th3pwn3r]

Vega is 'competitive' in all games. It beats the 1080 Ti in two so far, that have been optimized properly.



Not holding any breath! LOL. Just happy with my R9 290 is all.

Definitely not competitive in all games but I guess that's why you posted it with ' '. , It's subjective.

 

[kenikal]

I wonder what the technical reason behind this is, especially considering the rather quick falloff as the resolution increases. Simply geometry/rasterization vs shaders and changes in bottlenecks?

Edit:
Looking at the scaling from 1080p to 1440p and from 1440p to 2160p, I would say 1080Ti (and to a lesser degree, rest of the nVidia lineup up to 2160p) is somehow CPU-limited. nVidia drivers having larger overhead, async scheduling in drivers or something?

In GPU limited circumstances, I would expect the performance difference from going to larger resolution to be 20+% (maybe 15-20% for 1080p>1440p primarily because this usually tends to be CPU-limited anyway). Here is what the 1080p>1440p and 1440p>2160p performance hit looks like based on these graphs:

1080ti - 7.6% and 11.7%
vega64 - 16.0% and 27.2%
gtx1080 - 8.6% and 20.5%
vega56 - 12.0% and 24.1%
gtx1070 - 6.4% and 22.0%

Well maybe this is the most reasonable reason. (That nvidia driver has much larger cpu overhead.) With forza 7 and 1080ti, my cpu usage is pegged at 100% all the time (100% only in 2 threads) and making somewhat stuttery in some scenario, frametime graph spiking. My cpu is i7 skylake overclocked to 4.5ghz.