Got any more info regarding this? Intel themselves says that for VT-d you just need Processor and BIOS support, they say nothing about Chipset, check
here. Intel claims VT-d support on many of their Desktop Motherboards using a wide range of Chipset for Sandy Bridge (H61, Q67, X79), Ivy Bridge (B75, H77, Q77, Z75, Z77) and Haswell (B85, Q87).
Other manufacturers are pumping out beta BIOSes to support this feature either with public availability or at request on Motherboards with a variety of non-Q Chipsets, but as far that I am aware, ASUS has the worst track record regarding support for this feature. While many ASUS Motherboards do have an option to enable/disable VT-d support in the BIOS, they got usually an incorrectly implemented
DMAR tables for Intel platform or
ACPI IVRS tables for AMD, so it can't be used. It is also prone to be broken with a BIOS upgrade, as on some Motherboards that did have it working, newer BIOSes broke them.
You may want to check into this issue, as ASUS DO have Motherboards claiming support yet not working. I'm holding back from purchasing a new ASUS Motherboard for Haswell until its guaranteed it will work with VT-d/AMD-Vi, as that is what they will be used for.
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