In which case you are still 2 PCIe slots short. HPTX requires 9 slots of space after the I/O plate and that case only has 7. SR-2 slots are in positions 3-9.

that does indeed makes things complicated but the picture that bcavnaugh posted seems the hold a mobo of the same size but i could be wrong though.
I could however just get the rack none the less for the other PC I have and testfit it with the SR2.
I know from experience that nothing is what it seems in terms of fitting hardware :p

gordan79
 

bcavnaugh
It would be really Cool if EVGA came out with an SR-3 That would support 4 Graphics Cards at x16 with Two Zeon CPUs.
That Indeed would be my Next Rig. Throw in two 20 Core Zeon's and I am set for life.

 
Or they could just leave motherboard manufacturing to grown-ups and we can all live happily ever after.

gordan79 If you do not like EVGA Motherboards that is fine but their is need to Bash The Company.

NOXX1S
that does indeed makes things complicated but the picture that bcavnaugh posted seems the hold a mobo of the same size but i could be wrong though.
I could however just get the rack none the less for the other PC I have and testfit it with the SR2.
I know from experience that nothing is what it seems in terms of fitting hardware :p

The Motherboard that is inside is listed shown on my 2P Rig and was an ASUS KGPE-D16 Motherboard and is now a SuperMicro MBD-H8DGi-F
Same size Motherboards (EEB (12"x13"))
And in my 4P is a SuperMicro H8QGL-IF Both SuperMicro Motherboards are Useless as a Gaming Computers.
They do make Great Servers, that is I also have some SuperMicro Motherboards.
See http://www.evga.com/articles/00537/  You need a Case that has 9 or More PCIe Slots.
SR-2 Size HPTX (High Performance Technology Extended) form factor of 15 inches x 13.6 inches
 
http://www.evga.com/support/manuals/files/270-WS-W555.pdf 
http://www.evga.com/support/manuals/files/visual/270-WS-W555_Visual_Guide.pdf
 
 
Supermicro Chassis  4U  SC745TQ-R920B This is the Case I have for my HPTX Motherboard
Under $800 over at http://www.wiredzone.com Still Free Shipping