I've recently built a new computer specifically for MBing and its not quite delivering what I'd expected at this stage.

Specs: 920 stock
DFI T3EH8 X58
12GB 1600
Intel Raid 0
GTX 295
2560 x 1600 screen

I play all 5 instances on the one screen, with the main in the centre and the 5 slaves (one spare slot) stacked down the right.

I have fps limiter set to 45 maxfps and 15 maxfpsbk.

In a single WoW instance with all video settings maxed, I get 15-20fps in dalaran. With all settings on min, but draw distance maxed I get 35-40fps in Dalaran.
When boxing, 5 instances with all 5 on low setting and low draw distance, I get 35-43fps in Dalaran and in the wild. On low settings with max draw distance, I get 15-25fps on main.

Interestingly, Dalaran does not seem to decrease fps any more than unpopulated areas for me, so I don't think my CPU/RAM/HDD are limiting. I am thinking this must be a GPU limiting issue for me. Is there anyone else out there using a 30" screen for all 5 instances with a GTX 295 or 285. Are these results to be expected or are there any other ideas as to what I could change?

Cheers