Simultaneous Multithreading: Maximizing On-Chip Parallelism

Q1. The paper presents a number of choices for building future microprocessors.
    These include (a) wide-issue superscalar for a single thread, (b) fine
    grained multithreading, (c) simultaneous multithreading, (d) single-chip
    multiprocessor. Given a constant area budget, which of these options
    would you prefer if you were trying to: (i) maximize single-thread
    performance, (ii) maximize total instruction throughput for a highly
    multithreaded workload, (iii) maximize the product of single-thread
    performance and total instr throughput?

Q2. Does an SMT processor have a negative impact on clock speed?