Hi,

First of all - sorry if this is the incorrect forum, but this seems the most appropriate. I've also searched, and not found any answer on this.

As you might be aware - AMD/ATI have never officially released a Crossfire/CFX application profile for Fallout: New Vegas. While they have included crossfire performance improvements in their drivers, nothing specifically for FO:NV in an application profile. With the more recent CCC/vision-control-centre (VCC) they allow you to now setup/configure application profiles for different games, including crossfire settings. At the bottom of the "3D Application Settings" tab/area is now a section/option to change the "AMD CrossFireX Mode for 3D Applications". I'm assuming that using this can allow you to use specific CFX profiles and/or settings for games, especially ones which might not have their own CFX application profile (such as FO:NV, and you can go through the list of applications in this section to verify this).

What I'm wondering is, what option would I use here to enable a CFX profile to be used in FO:NV? Or would I have to use RadeonPro to do so?

The options provided:

1. Disabled — Disables AMD CrossFireX / AMD Radeon Dual Graphics support.
2. Default Mode — Uses the optimal graphics mode based on the current application and available AMD custom profiles.
3. AFR Friendly — Uses alternate frame rendering (AFR) mode for applications that do not have an AMD predefined AMD CrossFireX / AMD Radeon Dual Graphics profile.
4. Optimize 1×1 — Uses alternative frame rendering (AFR) mode with additional optimization for 1×1 resources.
5. Use AMD Pre-defined Profile — Uses an AMD predefined application profile with another application profile.

What I'm wondering is - can I use this to force/enable a CrossfireX profile for use with FO:NV? And if so, which option do I use? - I'm thinking using either of the AFR options, although I don't know what the difference between the two is, or use #5 and use Skyrim's profile.

Setting this correctly should allow/force CFX to be used in FO:NV, if I'm understanding this correctly. Or at least offset any/some negative scaling that might exist as there is no application profile for it. I'm hoping someone might be able to provide some assistance with this - like whats the differences between options #3 & #4, would option #5 using Skyrim work... or would I have to use RadeonPro for CrossfireX/CFX support in FO:NV?

Thank you in advance.