Like the Fastra I , the Fastra II use a Lian Li PC @-@ P80 Armorsuit case , which have 10 expansion slots . The motherboard in the Fastra II was at that time the only workstation motherboard that had seven full @-@ sized PCI Express x16 slots . The memory modules was initially six 2 GB modules , but was later upgraded to 4 GB each , for a total of 24 GB . Instead of an eighth dual @-@ GPU video card , the single @-@ GPU GTX 275 is in the computer because , out of all the video cards in the Fastra II , the GTX 275 is the only one the Fastra II 's BIOS can fully initialize . The total amount of GPUs is 13 . The video cards together bring 12 teraflops of computing power . Four of the six GTX 295 video cards have 2 PCBs , while the other two have only 1 PCB .