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MP 1,1-5,1 Are these temps Normal after CPU upgrade
- Thread starter Forrhouse
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CPU A is fine, CPU B cooling is bad.
The CPU B temperature is OK at this moment, but the fans need to work harder than normal. Also, CPU B will have higher chance to get into thermal throttling.
@KeesMacPro Do you know what model Noctua' fans you replaced your power supply fans with?
Also, did you have to re-pin the connectors?
Also, did you have to re-pin the connectors?
The NF-A12X25 ULN is the exact model I've installed in my MPs as a PSU fan.
It's a very silent fan , almost inaudible.
Note that the max rpm is 1200 , so with a power hungry GPU ,2X5690 and constant heavy workloads it could be insufficient.
Personally I havent seen this extreme scenario ,but this is something you may have to test first.
One practical thing I'd do : reroute the fan cable through the optical bay instead of behind the LogicBoard, this way you dont have to remove the Board for a fan replacement.
About the way to connect it etc. there's lot of info here:
Mac Pro (4.1/5.1) aftermarket fans WITH automatic SMC control
I've been reading around this subject for a while as a pet peeve of mine is noisy computers. My normal workstations are entirely passively cooled and silence is bliss, but I do still use my cMPs when I need machines with a bit more power or more cores for testing virtual environments and the...
forums.macrumors.com
Yes, the same fan.
I've also installed this fan in a MP 4,1>5,1 with 2X5690 and a RX580 Pulse and i'm using it on daily basis .
The NF-A series is very well made and superior to e.g. the Redux series.
It's not a big leap, but the NF-A is very silent and more effective under medium pressure load.
You may find this thread useful ... I had broken rivets and my Northbridge was 110C. Check it out if you want to know more ... https://forums.macrumors.com/thread...ndom-shut-downs-possible-overheating.2245159/
In the spirit of info sharing I thought I'd share my Northbridge stay replacement story following on from my post above.
I replaced my Northbridge following KeesMacPro's advice and the ifixit guide (https://www.ifixit.com/Guide/Mac+Pro+Single+CPU+Northbridge+Heatsink+Repair/125875) although this is for single 4,1 and mine is a dual Frankenstein 5,1 (2010 case, 2012 cpu tray) it was still really useful. In the UK I got the exact components I needed from
Accu.co.uk, including super thin washers (steel for the top and nylon for the underside) and low profile stainless steel nut for the underside, the thinner these components are the better the clearance with the aluminium tray housing and that negates the need to drill a hole as the ifixit guide suggests. I cleaned up the northbridge using Artic Silver thermal remover and purifier and reinstalled with my new stays and the original springs.
I'd already been in to replace the CPUs but this time I cleaned the whole tray with isopropyl etc.
It was a fair bit more disassembly than the CPU upgrade and while I've done indepth Mac surgery in the past I was still crossing my fingers as I rebooted.
I'm glad to report all's well. I've seen the incremental cooling reported by others after a circuit board clean. AND I've maintained my 7°C Northbridge delta which KeesMacPro rated. I used standard Artic silver. I had wondered if there was any benefit to be gained from these ultra-high performance thermal pastes but I'm happy as things stand.
If there's a better thread for me to post this in let me know.
I replaced my Northbridge following KeesMacPro's advice and the ifixit guide (https://www.ifixit.com/Guide/Mac+Pro+Single+CPU+Northbridge+Heatsink+Repair/125875) although this is for single 4,1 and mine is a dual Frankenstein 5,1 (2010 case, 2012 cpu tray) it was still really useful. In the UK I got the exact components I needed from
Accu.co.uk, including super thin washers (steel for the top and nylon for the underside) and low profile stainless steel nut for the underside, the thinner these components are the better the clearance with the aluminium tray housing and that negates the need to drill a hole as the ifixit guide suggests. I cleaned up the northbridge using Artic Silver thermal remover and purifier and reinstalled with my new stays and the original springs.
I'd already been in to replace the CPUs but this time I cleaned the whole tray with isopropyl etc.
It was a fair bit more disassembly than the CPU upgrade and while I've done indepth Mac surgery in the past I was still crossing my fingers as I rebooted.
I'm glad to report all's well. I've seen the incremental cooling reported by others after a circuit board clean. AND I've maintained my 7°C Northbridge delta which KeesMacPro rated. I used standard Artic silver. I had wondered if there was any benefit to be gained from these ultra-high performance thermal pastes but I'm happy as things stand.
If there's a better thread for me to post this in let me know.
@KeesMacPro Do you know a Noctua' fan in the NF-A series that will work, but has a little bit higher max rpm?
I am always overly protective of stuff just in case the worse case scenario should ever happen.
Thanks again for all of your help.
I am always overly protective of stuff just in case the worse case scenario should ever happen.
Thanks again for all of your help.
I suppose you mean a 120mm fan for the PSU / Intake and Exhaust CPU compartment.
I've tested the NF-A 12X25 FLX which runs faster , but unfortunately it doesnt work under ~ 1000 rpm, so afaik there's no other NF-A 120mm fan that works fine in this case.
Looking at Temps while testing , a Noctua ULN with max 1200 rpm is a safe bet for the PSU.
If i'm not mistaken you installed a RX580 , which power consume is moderate.
As an Intake and Exhaust fan in a DUAL CPU , it depends on the workload, ambient T etc.etc. so could be insufficient.
The single CPU runs way cooler than the dual CPU.
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Hmmm, crap. I dunno why? Bad paste job? Heatsink not fully screwed down? It's the diode that's high, the heatsink is comparable to before. Does anyone have any advice?
Read it again on idle,
fans set to standard speed.
if all is well I guess bad paste, maybe a fingerprint on processor or heatsink.
fans set to standard speed.
if all is well I guess bad paste, maybe a fingerprint on processor or heatsink.
Just saw your post .
+1 for checking contact CPU B heatsink /die.
As suggested by @Macschrauber too: read Temps at idle with fans on auto , if possible post a screenshot.
The Delta NB looks excellent !?
Thank you all for your feedback. Much appreciated! I have monitored temperatures for about one week now since your replies -- I wanted to make sure the screenshot I posted here last week was indeed consistent over time -- and indeed it is! Pretty bad temps for CPU B and they get worse with more pressure, like 20C difference!
I have to say that I never had temps above 40C for either CPUs up until I upgraded to Big Sur, but anyhow, regardless of that, I understand that I need to take care of this temp issue ASAP!
Please help me better understand the following (and hopefully your answers will help future newbies as well!!!):
1- What is the preferred range/difference (so called delta?) between CPUs Tdiode and CPUs HeatSink?
2- What is the preferred range/difference (so called delta?) between NB Tdiode and NB HeatSink?
3- Why is the NB delta higher than the CPUs delta..? Or so I seem to understand form several threads on temps?
4- Would you suggest I first try to tighten a very tiny bit (like 1/4 turn) the HeatSink of CPUB before I do a whole new paste job for that CPU? When I swapped new CPUs I was very paranoid with over-tightening and I am pretty sure I tighten less than I should have for both of them. Apparently CPU A ended up OK but CPU B definitely is loose.
5- When I swapped CPUs I used the MacRumors-famous Arctic MX-4 (but not the 2019 version!). At the time of getting ready for the CPU swap, I also got the graphite little thingy here attached as an image and recommended by @h9826790 in another thread about temps... should I try that graphite thingy or stick to the paste instead? I still have enough MX-4...
Thanks! In cMP we trust!!!
Stex
PS: I really feel like we need a sticky for temp ranges post CPU upgrades... we have amazing loads of info on upgrades but very scattered threads about optimal temps, and the latter are probably the most important aspects of a cMP upgrade... not sure if newbies can manage/initiate a sticky, but please long-term posters/contributors consider adding a sticky thread for optimal CPU/NB temp ranges to the Mac Pro sub-forum... ?
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Imho when CPU Diode, Heatsink and Core have a delta of 3 Celsius at idle its basically ok.
When heating up the results vary cause the massive heatsink is taking temperature slowly.
When heating up the results vary cause the massive heatsink is taking temperature slowly.
thanks. how about the NB optimal range? it seems from various threads that it is a much wider range between 6-12C is this correct? My NB to HeatSink difference is pretty consistent at 15C.... which I have read it's borderline...? again, I know these temps are hard to set to stone but a "reasonable" suggested range would be very helpful to have for all newbies bringing those x56XX into our beloved cMP!!!!
@KeesMacPro Do you know a Noctua' fan in the NF-A series that will work, but has a little bit higher max rpm?
I am always overly protective of stuff just in case the worse case scenario should ever happen.
Thanks again for all of your help.
I am always overly protective of stuff just in case the worse case scenario should ever happen.
Thanks again for all of your help.
Yes, I was referring to the 120mm fan for the PSU / Intake and Exhaust CPU compartment. My intake and Exhaust fans are set based on the NorthBridge Diode temp of 57C to 66C and are running at 1225 to 1380 RPM. They are still relatively quiet and at these settings and speeds and the result are great stable temps. So, even though the Noctua NF-A 12X25 FLX doesn't work under ~ 1000 rpm it sounds like it would be a great fit for my setup. Even doing light work puts them at a minimum of 1225RPM. In Northern California It will get to be 80F in the Summer inside the house. It will get to 90 to 100F (32C to 38C) in a Studio setting with lots of equipment on. Air conditioning is a must in the studio, but even with it on and a bunch of heat generated by equipment your still looking at a good 80 to 85F (27C to 29C). Outside we have days that average 110F (43C). If the Noctua NF-A 12X25 FLX fans are quieter even by just a small amount and they will last a long, long time then they would be worth it. So it sounds like the Noctua NF-A12X25 ULN is what I should use for my Setup as a PSU fan and a pair of Noctua NF-A 12X25 FLX fans is what I should use for the Intake and Exhaust CPU compartment.
I suggest we go on with this topic in another , more adequate thread , to keep this thread a bit streamlined concerning CPU Temps after upgrades.
THere's lots of information there and we can go more in-depth about fans , fans setup etc etc.
Mac Pro (4.1/5.1) aftermarket fans WITH automatic SMC control
I've been reading around this subject for a while as a pet peeve of mine is noisy computers. My normal workstations are entirely passively cooled and silence is bliss, but I do still use my cMPs when I need machines with a bit more power or more cores for testing virtual environments and the...
forums.macrumors.com
when I see 9-11 Degrees Clesius its ok in idle.
you really cant set it in stone as it differs from single to dual and from what you stuff in the Mac Pro.
also the Die heats up faster than the heatsink.
its not the best method but to be comparable I prefer take a first look at Idle.
you should see processor loads very low and standard smc settings.
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ok sounds good. Thanks for your help.I suggest we go on with this topic in another , more adequate thread , to keep this thread a bit streamlined concerning CPU Temps after upgrades.
THere's lots of information there and we can go more in-depth about fans , fans setup etc etc.
Mac Pro (4.1/5.1) aftermarket fans WITH automatic SMC control
I've been reading around this subject for a while as a pet peeve of mine is noisy computers. My normal workstations are entirely passively cooled and silence is bliss, but I do still use my cMPs when I need machines with a bit more power or more cores for testing virtual environments and the...
So I must confess that I hadn't actually fully screwed down either of my heatsinks post after my Northbridge stay replacement.
After fully cranking them down finger tight I get these temps at idle:
CPU A is definitely at 3ºC delta at idle (sometimes momentarily lower as seen here). CPU B rarely gets as low as 3º usually 4 or 5ºC. Is that a problem?
Thanks again...
After fully cranking them down finger tight I get these temps at idle:
CPU A is definitely at 3ºC delta at idle (sometimes momentarily lower as seen here). CPU B rarely gets as low as 3º usually 4 or 5ºC. Is that a problem?
Thanks again...