Why doesn 3DMark05 run on CPUs without SSE support?
SSE has been around since the days of 3DMark 99 MAX. CPUs ever since Intel Pentium III or AMD Athlon XP have supported SSE. A CPU without SSE support is most likely too weak for 3DMark05 anyway. SSE use provides a nice performance addition to 3DMark05, so it is needed for the new extremely heavy game tests.