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I guess 120c is too hot for 7900x doing sustained rendering

Chaoss

Chaoss

Chaoss

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Joined
29 Jul 2013
Posts
126
Location
Angel, UK
I have an RMA open for my 7900x but due to work commitments (which I use my PC for) and lack of money to buy another one while this one is being RMA'd I've been unable to send it in. The problem is that no matter what it gets a bit toasty, especially when rendering. I've had to increase the shut off temp from 110c to 120c so I can get my Substance Painter bakes to actually finish baking. Anyway the problem I've noticed today is that core 3 (the "problem" core that always gets 20 - 40c hotter than the others) doesn't seem to "work". as in it's always reported as running at 0mhz, the cpu now runs a bit cooler but the pc just immediately shuts off as soon as I start a bake, as in its like someone tripped the power and then it comes back on. REALLY annoying as I have a tun of work on backlog I need to send in this month.

tl;dr. X299 is **** for game development, if you're building a rig for game development either go with Xeon, or go with one of the older generations like X79
 
100+ degrees can't be the norm for this chip, with a 360mm rad. Despite it running hotter due to the poor TIM ??

I would put it down to a faulty chip rather than a whole platform being rubbish.
 
Can you disable that core somehow as a temporary solution? Change the affinity of your rendering program to not use that core? It might also be misreporting temperatures, have you got the latest BIOS installed?
 
What cooler have you got? It's either a bad mount or faulty IHS. Either way, running it flat-out like that is going to cause problems sooner rather than later.
 
As above, check the cooler to make sure it's got proper contact with the CPU.

I would also highly consider removing your overclock as well and perhaps undervolting it.

Pretty sure Intel states 95c is the max so... 120c at long periods is killing it :p.
 
Instead of raising the temp limit to get renders to complete, why don't you just under clock / under volt it?
 
105 is the TJ max on these CPUs... To bring down temps you can delid.... Disable the extra hot core you identified... Run without HT.... Lower Cache volts to 0.9v set IO to 0.9v.... All these work a treat.

We have many 18c rendering in business at 4.6 in 2U racks no issue with HT running!! after the other measures are taken.
 
Last edited:
8 Pack said:
We have many 18c rendering in business at 4.6 in 2U racks no issue with HT running!! after the other measures are taken.
Click to expand...

I suspect they would be in a temperature controlled room. Not a house with either central heating on (in February) or large windows affecting temperatures in summer.
 
Chaoss said:
I have an RMA open for my 7900x but due to work commitments (which I use my PC for) and lack of money to buy another one while this one is being RMA'd I've been unable to send it in. The problem is that no matter what it gets a bit toasty, especially when rendering. I've had to increase the shut off temp from 110c to 120c so I can get my Substance Painter bakes to actually finish baking. Anyway the problem I've noticed today is that core 3 (the "problem" core that always gets 20 - 40c hotter than the others) doesn't seem to "work". as in it's always reported as running at 0mhz, the cpu now runs a bit cooler but the pc just immediately shuts off as soon as I start a bake, as in its like someone tripped the power and then it comes back on. REALLY annoying as I have a tun of work on backlog I need to send in this month.

tl;dr. X299 is **** for game development, if you're building a rig for game development either go with Xeon, or go with one of the older generations like X79
Click to expand...

If you build a rig for game development either go with Ryzen Threadripper or with a Ryzen Threadripper.

120°C isn't simply too hot, it is impossible temperature, that chip is so defective, that can't be more. Wonder Intel's quality control how passed it through.....
 
Have I missed something ? I see no mention of what cooler hes using. Aos if you are running a 4.5ghz OC like your Ssig says, run it at strock.

The one core being much hotter does seem like a bad mount or a bad IHS. That being said I had a **** poor 5820k, needs 1.25v for 4ghz. 7v fans on a custom waterloop I was getting temps in the 90's under load with @4.3/1.35v with one care about 12-15c hotter than the other.

2 years later of being sick of this I brough a lapping kit and sanded the IHS as mine seemed to be very concave off center. Same CPU same OC is now in the low 70's.

My day to day 4ghz/1.22v now with a added 1080ti in the loop in the low 60s withe heaven and realbench/ADIA64 putting load on both the GPU/CP
 
Jumper118 said:
Return and get a threadripper 1950x
Click to expand...

Threadripper Zombie Alert why would he want to bring back a 10 core 7900X that crushes a 16 core Threadripper
HEVC / x265 Encoding and every last game their is and Threadripper cant get past 4 ghz and when it does it draws
more power then he would have to buy a specialy made AIO water cooler head sure the 7820x 8 core beats your
16 core Threadripper encoding HEVC
 
Hogie said:
Threadripper Zombie Alert why would he want to bring back a 10 core 7900X that crushes a 16 core Threadripper
HEVC / x265 Encoding and every last game their is and Threadripper cant get past 4 ghz and when it does it draws
more power then he would have to buy a specialy made AIO water cooler head sure the 7820x 8 core beats your
16 core Threadripper encoding HEVC
Click to expand...

Wow hang on, what a strange rant to make, on power and heat you're saying exactly the opposite of whats fact, the 7900X is known the world over to draw far more power than a 1950X and run far hotter, especially when overclocked vs overclocked.

As for the rest of it...

90034.png


x265.png





And some things you didn't mention...

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untitled-13.png


cine-multi.png


Where Intel win its hardly convincing, where Threadripper wins it is.

Edit: no one reacted to Jumper118 because what he said was not helpful, but this, what you jumped in with is just factually wrong.
 
Hogie said:
Threadripper Zombie Alert why would he want to bring back a 10 core 7900X that crushes a 16 core Threadripper
HEVC / x265 Encoding and every last game their is and Threadripper cant get past 4 ghz and when it does it draws
more power then he would have to buy a specialy made AIO water cooler head sure the 7820x 8 core beats your
16 core Threadripper encoding HEVC
Click to expand...
its doesnt melt the motherboard or the cooler you put on it and thermal throttle. a threadripper at stock is faster than a thermal shut down joke cpu fill with lava and toothpaste.
 
All 5 of the Intel chips I'd used with my old external water cooler shut off at precisely 106C. I know this because I've never seen 107 on screen :D
Generally if I'd seen 105 it was then too late to get to the cooler on/off switch in time. To my surprise none of the chips or motherboards failed over their years of heating abuse.

Although the OP states that its 1 core playing up, so perhaps the 120 is just for that one core? I'm just wondering what the overall cpu temp is as surely it cannot be possible to be 120c? Also would need know what cooling as said above. If it were a budget chip, I'd assume it was on the cheepo stock cooler with one of the legs not fastened.
 
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