Originally posted by schmidtbag
View Post
Announcement
Collapse
No announcement yet.
PCI Express 1.0 vs. 2.0 vs. 3.0 Performance With NVIDIA/Radeon Graphics On Linux
Collapse
X
-
Originally posted by agd5f View PostCan you check the pcie config cap registers and see if changing the sbios setting actually disables advertising the higher speeds or not? It may just change the default negotiated speed.
EDIT: this was with testing on FullHD Resolutions though, might make a bigger difference on 4K
Comment
-
Thank you Michael, great test! I'm very surprised by the results when it comes to the the AMD vs NVidia difference as well! It seems to spark some questions here in the forum, it will be interesting to see if we get any comments from any AMD devs on what they think the difference might come down to.
- Likes 2
Comment
-
Originally posted by microcode View Post
I would advise against getting a Skylake X, they're prettymuch the same as the socket 2011 equivalents, but more expensive, and with mainboard-level DRM on chipset features.
Comment
-
Just my humble opinion....setting the link rate in the BIOS wasnt confirmed as set post boot. What if the NVidia card forces the BIOS to override its setting by advertising it will only take the highest available link rate?
I have seen many PCIe cards adapt their lane usage depending on the Gen level and the type of slot they are in.
its a compelling test indeed and worthy of further analysis.
Comment
-
Originally posted by microcode View Post
I would advise against getting a Skylake X, they're prettymuch the same as the socket 2011 equivalents, but more expensive, and with mainboard-level DRM on chipset features.
Not to mention that Skylake Xeons have been running Linux on cloud servers since the beginning of the year and I'm pretty sure they work with Linux too.
* Including literally inventing the direct rendering infrastructure that AMD relies on for its Linux drivers, can't say that AMD has contributed some vital piece of infrastructure that benefits literally thousands of applications in the same way.
- Likes 1
Comment
-
Originally posted by edwaleni View PostJust my humble opinion....setting the link rate in the BIOS wasnt confirmed as set post boot. What if the NVidia card forces the BIOS to override its setting by advertising it will only take the highest available link rate?
I have seen many PCIe cards adapt their lane usage depending on the Gen level and the type of slot they are in.
its a compelling test indeed and worthy of further analysis.
Comment
-
Originally posted by chuckula View PostNo idea what that so-called "mainboard DRM" is about but I'm more than willing to bet that the company that is consistently #1 or at least one of the largest contributors not only to the Linux kernel but to a vast number of open source projects* that are regularly used not only by Intel processors but by the wider community will be able to install & run Linux just fine.
Not to mention that Skylake Xeons have been running Linux on cloud servers since the beginning of the year and I'm pretty sure they work with Linux too.
* Including literally inventing the direct rendering infrastructure that AMD relies on for its Linux drivers, can't say that AMD has contributed some vital piece of infrastructure that benefits literally thousands of applications in the same way.
- Likes 1
Comment
Comment