I still don't buy it. I need to see some very convincing reasons as to why the P45 performed better than the X38 in crossfire....and also need to see some more tests.
The only "newer tech" the P45 uses is a 65nm shrink from 90nm....the southbridge is different (ICH10 vs ICH9R) but the X48 performs faster than the X38 and P45 and uses the older ICH9R southbridge, so that rules that out.