Asrock H81 & Radeon 7990 incompatibility

[mrs]

Interesting post confirming the 8 GPU limit is only related to the Windows AMD driver, this poster has 4x Radeon 7990 plus 2x NVIDIA cards = total 10 GPUs under Windows

https://bitcointalk.org/index.php?topic=...msg9069444

[epixoip]

4x 7990 is 8 GPUs. That's the maximum the AMD driver supports. Not sure what you're not understanding about that.

[mrs]

I was just sharing an interesting setup... no need to be so aggressive.

[mrs]

Quick update: I've been running 4x 7990s on the ASUS Z97-WS successfully. This board won't boot with 5x 7990.

[ati6990]

This board won't boot with 5x 7990. oh jezuz pleaze...............

[epixoip]

5x 7990 is 10 GPUs, and the AMD driver only supports 8. So even if it did boot, it wouldn't work.