Well, first of all I think any wanna-be-quiet system have to run warmer than a more noisy one.
Obviously. But not above specifications.
Well, first of all forgive me to have been a bit shallow answering you.
I don't know if it's above specifications, either as I'm used to higher specs for my AMDs (70-72°C), and as I've not checked before answering the TCase max of your 940BE (just 62°C).
However, as you already know, it's not the absolute maximum but the maximum safe operating temp on the heatspreader: AMD isn't used to publish the equivalent of the TJ-max for Intel.
Currently I still think you aren't out of any specs: apart there are several reports from users on the web on temperature about 60°C for the 940BE, to be sure there are several test - IMO - to run: first of all I would use a trusted pair of apps, Prime95 and FurMark to fully stress the system. Then I would check the fans voltages, as on your first post it isn't clear how you run them (particularly the CPU and the front ones).
Personally I would run 4 Large FFT + FurMark two times, with and without the side panel on, while monitoring the temperatures: if the recorded CPU temperature won't differ so much (I guess at most around 3-5°C, as a first instance) then I would be tempted to think that the Sileo (its airflow) don't impact too much the CPU cooling.
The further test I would done, in order to determine if the Sileo is the culprit, is to run the same test without the case at all: if CPU temp should be substantially similar to the one recorded with the mobo inside the case, I would turn my attention to the interface between the heatspreader and the heatsink, and probably I would reinstall this latter giving a fresh application of a good TIM.
If even after reinstalling the heatsink the CPU temp hadn't to lower enough, I would think that the AC isn't enough to cool down the 940BE.
Without recording a consistent data set about temperatures (and fan speeds) I think it's not possible to properly troubleshoot this situation, nor I see a quicker way to do so.
Then, according to me there should be nothing REALLY wrong with your temps
(about the noise, I have some mental reservations).
That's a higher clocked CPU and it is still running cooler than mine in that test.
It's a more efficient and far more powerful heatsink, CPU temp have to be lower.
About the MCP, it's always been a pain IME: according to me the best way to go is for a new heatsink. Something like a Thermalright HR-05 might give you a 15-20°C improvement, without any fan, far more with a slow spinning (1000rpm) 80mm one (a Sythe SFF80A, or a Nexus Real Silent Case Fan maybe undervolted). Even a top down cooler for the CPU may help to lower the temp of about 3-5°C.
Obviously you may go cheap and fix with a zip tie a fan on the original heatsink (I don't recommend to do so).
Umm, did you look at the pictore?
Yes, from the photo the standard heatsink didn't seem cutted down, but however I've looked at it: as said, I think an HR-05 might be mounted, maybe the SLI one.
I have larger Scythe Kabuto on a mATX board with that infamous Nvidia chip, and I was able to swap the heatsink (but the mounting seem different from your pushpins), placing the TR slightly slanted (with reference to the motherboard's sides).
Probably using the SLI one you should move the RAM in the currently empty slots: however, the copper base of the HR05 is usually smaller as footprint than regular mobo's heatsink, about 3x3cm with an about 5mm height (thickness), so it might be possible to fix it under your card.
About the proposed fan, you have just to secure it in order to let it blow against the heatsink, it shouldn't be horizontally out of necessity.
However, there's no other way to substantially lower the MCP78 temp, even without the case it would run very hot.
Maybe your system is just too much crowded, and maybe you should rationalize it.
I'm thinking of replacing the heat sink with a Noctua NH-C12P or something, that blows air onto the board, cooling hte MCP too (maybe).
It may help, but IME usually not dramatically, probably a single digit improvement. The C14, if it fits, it's better suited at cooling the mobo.
Unfortunatelly, CPU and MCP temps aren't specified as clearly or I haven't got any exact information.
I can tell you that above 86°C your MCP should reboot the system: so it did mine (this is why now that mine sports an HR-05 SLI).
I was thinking more like buying the side panel of a CM Centurion 5 (RC-5xx) (like this
) with air vents on it.
Do the tests with and without the side panel, to best determine your choices.
Obviously a modular one will help airflow but I think you wouldn't change it.
Er, this is already a modular PSU
Shit, this is one of the shallowness I wouldn't have made.
I was thinking of buying a Seasonic X-650 or X-560, but since it's turning off its fan under my typical idle loads, it would only worsen the ventilation of the case.
The PSU can't have an exhaust role: a fan have to spin to freshen the PSU, not the case.
An help may come from PSUs such the CoolerMaster Silent Pro with their flat cables, but the more I look your picture, the more I think you should rationalize it.
Any smaller one should work equally good (so, according to me, a 900 or a 600/300 should be preferred with your components).
I don't see why a 900 or an even smaller case should be preferred with my components?
Because they aren't the hottest parts in town (despite of your high load temp on CPU) and in that way you might have spared some money.
They wouldn't even have enough bays for what i've got! The 300 and the 600 has only 3 bays. Only the 900 would take my 4x 5.25" and 1x3,5", but if I'd put all of these there, plus the other hard disks internally, i'd have to remove one of the front intake fans and the bay with it, plus there wouldn't be any open surface to breathe on the front panel!
AFAIK the 902, the 600 and the 300 have the about the same bays (9 to 10), even if I obviously forgot that you have those ugly swap caddy for two 3.5" disks.
I really only found the 1200, that would take everything I've gotten.
You may give a look to the quick research made by MikeC for the SPCR mid-tower file server:
- AeroCool VX/VS-9 Pro
- Antec 1200
- Antec 902
- Chieftec Smart WH-01
- Coolermaster Centurion 590
- Lianli PC-P80
- Lianli PC-P50
- NZXT Evo
- Sharkoon Rebel 12 Eco / Value
- Silverstone KL01 & KL02
- Silverstone TJ-07
- Sunbeam AC9B-T Acrylic
- Thermaltake V5
- Xigmatek Utgard CPC-T90DB
- Zalman MS1000
- Zalman Z7 Plus
I don't want to change the case, but I don't see any other option. That's why I came here to ask, if there's anything else. Maybe I'll try to find a side panel with air vents and see if it would help.
I think you need to do some tests as the ones I pointed you out above.
I'm also thinking that if the rear exhaust fan is costantly run at 1000rpm, it might just be turn out inadequate.
Looking at the dust traces, the case has very low negative pressure, it's sucking in air on all the tiny holes and gaps. This is why I thought, more intake would help fresh air to get in.
Usually a front intake add noticeably more noise but cannot lower so much the temps. Usually, not always.
But otherwise you should have the first four 5.25 slots still filled by the optical and swappable drives, so at first sight I don't think you could substantially lower those CPU and MCP temps with an intake fan under them. Maybe the GPU ones.
I strongly advise you to perform some various stress tests (with the side panel on, without it, on open-air), as you might find out that just convection won't help you enough.