NVIDIA hardware passes WHQL as judged by Microsoft, and fully supports all the features of SM3. Other hardware also passes WHQL for SM3, while not necessarily fully supporting all of the SM3 features. [...] A failure in a WHQL DCT test is by itself not an indication of hardware or driver flaws. There can be several causes for this, including test errors, and hardware mismatches. [...] WHQL failures and errata by themselves are a poor and inaccurate indication of Windows and DirectX compliance.
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