those temps are good especially since synthetics like prime usually tend to make lots of heat, i have noticed myself what you said tho, on haswell lower clocks with lower voltage seem to return better results then higher clocks with higher voltages at least sometimes, i have had a rare few tests so far go the other way
as i saw as well your running 4.4GHz on your test at 1.275v and a score of 1113 mine probly wouldnt even boot that lol
mines 4.5GHz min/max Cache 4.4GHz requires 1.4v to be stable and only gets a 903 lol 0 throttling happening and 1 core spikes to 90
i run adaptive tho so i dont use prime, but i can run realbench as many times as i wish and 80c is the highest spike ill get, but im also using a Swiftech H320
at those temps and voltages tho you may be able to swing 4.5 or 4.6 to see if you catch any improvement, the number i tend to look for when testing is high 70s and 80's for my chip atleast after about 76c its like a downhill where it can get to hot to fast, and not like a 76 spike, i mean like its sitting at about 76-84c which ive only had mine doing when i had 1.5+v going to it to try and boot 4.8
as for other sections of the test,
besides that if you havent already you may be able to pull down your ram timings and overclock the GPU's a bit, but ive noticed again it may just be my card since its a piece of trash lol but ive noticed a couple places that nvidia cards sometimes get worse scores when going higher on the overclock as well, well in realbench anyway lol
my trash 560 ti is that way lol realbench stock settings gets 37,000 openCL 650+ textures per second
bring its base clock of 851MHz to 1050MHz gives me a score of 27,000 openCL 200-400 textures per second
and bringing the 851 to 951 gives me 45,000 openCL 860+ textures per second
as i said tho may just be this crap card, as sometimes the 1050MHz gets shaky while other times its rock solid
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