Nvidia vs AMD vram usage?

[shankly1985]

Just got a 480 vs 1060 pop up in my YouTube feed and something I noticed again is just how much difference they is between the two running same setting Amd is around 2GB and nvidia 4GB
Anyone have any idea what is going on here?

Here link sorry can't add to post correct on phone so only mobile links.
https://youtu.be/C9QhOOGm_2k

Seen this on a Farcry primal video other day I'll find link later, where Vram usage was much lower on the AMD GPU than Nvidia running same settings.

 

[shankly1985]

think it just depends on the game if it has nvidia game works like tress fx etc etc
this video shows all the cards within 300mb of each other

It's still much lower look bottom right, next to memory speed.

 

[shankly1985]

Problem is it could be quite complex reasons why - i.e. whether the VRAM is actually used or just lazy garbage collection or caching, etc. nVidia also do some stuff with complied shader caching which can also increase VRAM use but also results in less stutter in some situations compared to normal.

EDIT: Wow 480 gets smoked in that GTA V video.

Be interested what would happen if they selected shader cache in Radeon settings.

Yeah GTA5 seems to favour Nvidia quite abit, still though 480 is handling that sweet 60fps though.

 

[shankly1985]

To be honest, his (DudeRandom84's) testing methodology isn't scrupulous enough.

Tinfoil hat moment:

He could have aggressive pre-allocation set as the memory policy for Nvidia, by some weird force of habit.

He might have enabled "High Quality" texture filtering in NVCP, which can raise VRAM usage quite a lot in some games as it disables all optimizations.

In the OP video, the RX 480 is throttling hard. The core clock is all over the place. In the next video, it's 100% stable at 1266MHz.

It's also not mentioned if it's a 4GB or 8GB 480, as the settings screen is clearly recorded on the 6GB 1060 in the OP video.

Don't get me wrong, I appreciate the work he puts in and he obviously likes buying GPUs but more information would be nice

More information would definitely be nice, it's the only real downside I can give Digital Foundry they don't give much information in there videos either about cards type or clock speeds.
One thing all YouTube channels should definitely aim for if they into this video recording is external capture to completely remove that bottleneck.

OP video am not sure what he uses for recording? But I do know some games are effected much more depending on recording software.