Does increase in number of secondary datafiles for tempdb helps in reducing io write waits(stalls) ?

All,

First of all thanks for taking a look on my ask.

Env. : SS2K8R2, Windows Server 2K8R2 SP1(Virtual Machine) & 4 core processor.

I see some high number of io write stalls for tempdb database through dmv - sys.dm_io_virtual_file_stats.

Currently, I have only one primary tempdb file and one tempdb log file. I read some of the blogs online that count of tempdb files(.mdf & .ndf) should be equal to CPU count. Hence, does increase in tempdb files here helps me in reducing the tempdb io write ? 

Appreciate your help here. Thanks in advance!