At the request and repeated insistence of NVIDIA, we decided to retest our performance results above; NVIDIA said they had seen no problems with the Hybrid Power over the mGPU as dramatic as we saw here.  We retested all three titles at got some slightly different results; at least on the one title that stood out:

NVIDIA nForce 780a SLI Chipset Update - Chipsets 4

NVIDIA nForce 780a SLI Chipset Update - Chipsets 5

NVIDIA nForce 780a SLI Chipset Update - Chipsets 6

From these results you can see that Crysis and Call of Duty performance remained the same as in our original tests posted on launch day.  The World in Conflict results show a dramatic change though – rather than have a 50% decrement in performance going from having the monitor connected to the discrete GPU to having the monitor connected on the integrated GPU we saw performance nearly identical in both situations.  It turns out that the root of our problem was with the WiC patch and how it handles resolution changes and really had nothing to do with NVIDIA’s Hybrid Power implementation at all. 

Our apologies to our readers for the mix up, but we are glad to have the actual results seen above.

Read the full review and updated conclusion and analysis.