Whether it is Workstation Pro or Workstation Player, the system requirements are the same for the same version number.
The i7-920 is Bloomfield (Nehalem microarchitecture).
https://ark.intel.com/content/www/us/en/ark/products/37147/intel-core-i7920-processor-8m-cache-2-66-...
Ever since version 14.x at minimum Intel CPU requires Westmere microarchitecture (the one immediately after Nehalem). The last version that can run with i7-920 was 12.5.7 (last update January 2018).
Upgrade to a whole new system altogether or upgrade to a Gulftown CPU such as i7-970 or i7-980 as it shares the same socket as i7-920.
https://ark.intel.com/content/www/us/en/ark/products/codename/29886/products-formerly-gulftown.html
If you want to buy a second hand Gulftown CPU, make sure that the motherboard BIOS supports it. Typically a BIOS update is necessary to support newer CPUs even if they are socket compatible. Other things to watch out for is the RAM speed (e.g. i7-980 appears to support only DDR1066 but not DDR800). Of course there is always the risk the old i7-970 bought from an online auction site may not work at all so buyer beware.
