Set flags to boost performance??? Yes, there are certain trace flags that can be set to change the way SQL server works. These settings improve performance for larger systems (8+ CPUs, 8+ GB RAM, etc…). There is an nice KB article for this here: tuning options in high performance workloads
Here are a few excerpts (many more in the link): Trace flag 652: Disable page pre-fetching scans, Trace flag 661: Disable the ghost record removal process, Trace flag 834: Use Microsoft Windows large-page allocations for the buffer pool, Trace flag 836: Use the max server memory option for the buffer pool.
The scope of these TFs (Trace Flags) can be server or session based. Look up the KB for more details.