The LL 6070 has notoriously bad ventilation, especially around the intake area. You're also running a lot of HDDs and a hot vidcard which all contribute heat to the case. Your 4 NMB fans, while nice and quiet, don't move a lot of air either. So that gives you pretty high case temps to start with which leads to problems with your CPU cooling.
The
MCX478-V, while a good performing heatsink, isn't at it's best with a low-flow fan like that Papst.
The 875PBZ reports temps fairly accurately.
It's been warm here in Cali the past few day. My computer room has been in the high 80°F range during the late afternoon/evening hours so I'll assume your in a similar position since you're located about 10 miles from me.
So, the bottom line:
Your CPU temps under load and at idle are right about where they should be, given your hardware setup and ambient temps.
Can you do anything about it and still keep your system quiet? (which seems to be your aim, given your choice of hardware and your excellent cablegami job)
1) More case ventilation would certainly help. That would mean cutting all your fan grills at the absolute minimum, and preferably doing some further mods the the front bezel are of that 6070.
2) You
might want to think about swapping out the rear NMB's for Panaflo L1A's on Zalman Fanmates. The L1A's move more air than the NMB's and are about the same, or very slightly louder. Using the fanmates you can tune them if necessary.
3) You could consider swapping your HSF for a Zalman 7000. They perform much better than the MCX478 under low airflow conditions. (look at the temp comparison charts on the last page of that review I linked above)
The thing is, if you do all the above you'll end up with a CPU that still runs in the high 50°C area under full load, which is 100% perfectly safe and won't hurt the CPU at all, but still seems to concern people that are used to seeing lower temps. These 3+ GHz CPUs put out a lot of heat and it's tough to get rid of it unless you want to run a lot of fans/ventilation, which it looks like you
don't want to do. I can empathize with you, being a quiet PC nut myself. My nearly silent gaming rig is built around a 3.0C P4 and runs in the high 50°C range duing the hot summer/fall even though it's in a very well ventilated case.
My suggestion is to make a few mods to your case ventilation/airflow and then just run your system like that. You have a very nice system and it seems a shame to pull it apart just because the CPU temp runs warm in hot weather under full load.
Facebook
Twitter
Instagram