HAY, i can finally use the forums again! so what i meant to post yesterday is now on the main post. for simplicity i'll put the stuff here too so you dont have to go back.
OK, first off my initial testing was off by nearly 10%, 569,252 vs 634,077, because i found out that even though all my hardware was pcie 3.0 compliant the gpu was actually running pcie 2.0 until i forced it to run at 3.0 speeds. if you want a direct unit to unit comparison of pcie 2.0 vs pcie 3.0 look below.
PCIE 3.0
9704: 636,693
9704: 644,790
9704: 645,873
9704: 638,934
9704: 648,603
Avg PPD: 642,978
PCIE 2.0
9704: 638,585
9704: 572,532
9704: 575,073
9704: 572,382
Avg PPD: 589,643
8.295% improvement with the 1070 going form pcie 2.0 to pcie 3.0.
Now with the 1070 avg being 634,077 PPD it is 26% lower than that of the 1080. some other useful stats on the 1070 is that its PPD per Watt at 150W full load is 4,227 and its PPD per USD spent is 1,441. On the other hand the 1080 has 4,423 PPD/W and 1,244 PPD/$. with the 1080 achieving 26% higher PPD while only increasing its TDP by 17% to 180 Watts the 1080 wins in efficiency by 5%. BUT it looses in the PPD over cost department! With an increased cost of 48%, $650 vs $440, the 1070 is actually 18% higher in PPD per USD spent.
so in conclusion, if efficiency is your goal and cost doesn't matter then the 1080 is the go to folding card right now. but if cost is of concern the 1070's are there to help you out and not break the bank.