Funny how the posts was when hardocp reviewed conroe. Anyway, without talking about hardocp and its junk as such. Those memory+speed wouldnt change anything at all. Less than 1%. 0.5% is a good bet on average.
Actually faster memory is better for the "old" phenom. I think cache blinds you in terms of "IPC" gains. On a pure core view I dont think Phenom 2 is any faster than Phenom 1.
Its abit like a Core 2 with its large cache. DDR2-667 vs DDR3-2000 basicly makes no difference. Tho you could claim it FSB limited. But we already seen the 1066vs1333FSB....
Anyway, look on the scores. I would say UT2 and maybe World in conflict is simply bad testing.
Call of duty..0%. CoH 2%, CoJ 2%. Stalker 4%, Crysis 5%.
Also a fun note. DDR2-800 in the end might not have been so bad...
http://www.anandtech.com/printarticle.aspx?i=2989
Phenom 2 used Corsair DDR2-8888. Thats 4-4-4-12 at DDR2-1100. I´m sure you can have some pretty good timings at DDR2-800 speed as in 3-3-3? The DDR3 is 8-8-8 I think