Hey Rodney -
First off, the GTX 460 is a nasty card - awesome pic! Even at that resolution, the 460 should be eating all of those games for breakfast at max settings - GE:S shouldn't even be a blip on the radar.
After reading this thread to catch up, I have a couple questions and a statement for you:
Q.)
What do you have for a motherboard?
Do you have more than 1 PCI-E x16 slot on your board?
What is your PSU?
What do you have for a case?
S.)
When looking at your system specs, this caught my eye:
"AMD Phenom 9500 Quad-Core 2.20 GHz"
I bring this up because it's about 6 sub-families of processor behind where the current AM3 sockets are (behind Athlon II's & Phenom II's,) so it could be bottle-necking your sweet GPU.
Unless GE:S is somehow causing you to hit your RAM ceiling, I seriously doubt your RAM as anything to do with anything. Even if it's still DDR2-800Mhz - which I kind of suspect, because you have an AM2+ socket.
All of your temps (from your old setup) look fine, so none of your components seem to be over-heating. How are the temps with your 460?
Chances are, if temps really were the issue, you wouldn't get poor FPS while gaming, your drivers / card would just crashes with either artifacts, grey-screen, blue-screen, or black-screen. If they were really bad your card might not even function all together.
The reason why I asked about the 2nd PCI-E x16 slot on your board is that on most mid-range boards with more than 1 PCI-E x16 slot, you'll typically see the primary slot at x16 and the secondary slot running at x8. If you have your GPU in the x8 slot, that could also be a reason for the poor FPS.
Even though I ask about your PSU, I seriously doubt it - chances are if you were over-drawing your PSU while your GPU was under load during games, you would've fried your rig by now - not had poor FPS. Just curious though.
To be honest, out of all of the components, I suspect your CPU the most unfortunately. Especially considering how new the 460 is. If it
is your CPU that is the culprit, your mobo should support an AM3 socket (since it's AM2+.) That being said, you would more than likely have to do a BIOS flash, and even then you might encounter a greater likelihood of having BSOD's since there are known compatibility issues with AM2+ sockets and AM3 chips.
That being said, I couldn't find a release date on your CPU, so I'm a little unsure of when it came out. Depending on the release date, we could have either found the cause of your issues, or that I'm a big fat liar.
One or the other.