Cleeve - if you're still about, could you have a little look at this.
FX 4170 4.2Ghz - a 16% overclock on an FX 4100 3.6Ghz. But the same chip.
The FX 4170 delivers a 44% frame rate increase over the Phenom II 955, yet the 955 is in a tier higher on the CPU Hierarchy chart than the FX 4100.
By my reckoning the FX 4100 would deliver something like 28% higher frames than the 955.
As I've said from day 1, the FX 4100 is in the wrong tier. The FX 4170 is 2 tiers higher and the only difference is a 16% overclock.
The i3 2100 is 3 tiers higher, but previous more comprehensive benchmarks show an average of 10% higher frame rates.
My own first hand experience saw a core 2 duo e8500 (same tier as FX 4100), have a 50% frame rate jump in Dirt 3, GTX 470, 4GB DDR3, 1280x1024, 40fps for the e8500, 60fps for the FX4100.
Yet if I based my upgrade route on the CPU hierarchy chart, I would have expected no significant increase and avoided that CPU.
I appreciate this is 1 game and 1 configuration. The FX 4170 seems to be in the right place, but should the same chip with 16% less performance really be 2 tiers lower?
Is it really worth upgrading from an FX 4100 to a 3 tier higher i3 2100?
Is 10% average performance really an upgrade or is it somewhat parallel?
http://www.tomshardware.com/reviews/gaming-fx-pentium-apu-benchmark,3120-10.html