Typical fanboi-ism that is being repeated. There are 2 different lines of AMD GPUs that use the same GPU parts: FirePro Wxxxx and Radeon xxxx / R7 or R9 xxx.

Typical fanboi-ism that is being repeated. There are 2 different lines of AMD GPUs that use the same GPU parts: FirePro Wxxxx and Radeon xxxx / R7 or R9 xxx. For instance, the W9000 uses the same GPU as the Radeon HD 7970 Ghz Edition. This card sells for a retail price of maybe $500. Even if it is instead based on the 7990, that card is not $3K either. The difference between the W9000 and the Radeon is that the RAM on the card is ECC on the FirePro and not ECC on the Radeon series... and nowhere that I can see, does Apple say that the DDR5 RAM on the graphics card is ECC; only that the main RAM for the CPU is ECC. See this for codenames of the various GPUs: http://en.wikipedia.org/wiki/Radeon_HD_7000_Series#Southern_Islands_.28HD_7xxx.29_Series http://en.wikipedia.org/wiki/Radeon_HD_7000_Series#Southern_... . Look up the equivalent retail prices of the cards mentioned, on the Wiki page... note that currently the prices are higher at retail because of the GPU shortage due to people buying these for Litecoin / Dogecoin mining. See that the Apple fanbois in their "I Want to Believe" behavior don't understand what is going on...