I recently got myself a super tiny network render node.
The machine is a Gigabyte GB-BXi7-4770R (http://www.gigabyte.co.nl/products/product-page.aspx?pid=4888#ov) with an i7-4770R CPU.
We all know KeyShot utilizes all CPU cores to the max. ;)
However, I was a bit shocked when I saw core temperatures soar up to 100°C in HWMonitor on Windows. :-[
While KeyShot is running the core temperatures typically fall within the range 90 to 100°C.
At the same time I'm reading that many Macbooks reach equally high temperatures under heavy loads...
Would it be OK to run this system so hot for extended periods of time (8 hours/day) without melting the machine or my desk? :)
Dries
http://ark.intel.com/products/76642/Intel-Core-i7-4770R-Processor-6M-Cache-up-to-3_90-GHz says the maximum case temperature but not safe cpu operating temps, so my guess would be to say with adequate cooling it may well be happy, but for how long is any bodies guess
Martin
Btw, I'm currently running this machine without overclock, Turbo Boost disabled (3.2 GHz max.) and with a core voltage of just 0.95V.
Dries
Intel defines the case temperature this way:
Case Temperature is the maximum temperature allowed at the processor Integrated Heat Spreader (IHS). You are way over the temp on the spec site that Martin found, so it sounds like you are likely to have a problem.
Maybe it will run cooler with the cover(s) taken off?
Can you relocate the box to a cooler location?
QuoteCase Temperature is the maximum temperature allowed at the processor Integrated Heat Spreader (IHS).
The core temperatures in HWMonitor in fact aren't Tcase. As far as I know, Tcase cannot be measured without an actual probe and milling on the IHS.
QuoteMaybe it will run cooler with the cover(s) taken off?
The case is so tiny, that it doesn't have any covers (except for the bottom, which holds the SSD). :)
QuoteCan you relocate the box to a cooler location?
Not really an option...
Dries
A couple of other (not so good) options are replacing the internal fan with a higher RPM model, or it setting on top of one those notebook coolers. ::)
Hopefully the actual problem is an inaccurate readout (the temperature sensor or the report from it is faulty). You can probably get a close approximation using a hand held infrared thermometer (about $20US). I can't speak to the reliability of those things, but they should be easy to check - point it a someones face, a block of ice, a pot of boiling water, etc.
Just trying to help, but rapidly running out of ideas here. :-\
Hmm, I've been doing some further reading and it seems that 'Tj max' for 4770(R) is 100°C.
This means that this CPU can handle core temperatures up to 100°C perfectly fine.
I think I'm good to go! :)
Dries
100°C ? Call me when the tea is ready ;D
Yeah, it runs a little hot. However, it is still perfectly within Intel spec.
And apparently the recent high-end MacBook Pro models with i7 CPUs run just as hot on high loads.
+50fps in the camera scene for a machine with a volume of 0.79L is pretty awesome. ;D
Dries
I just got the quad core 2.6 i7 MacBook Pro. As soon as you start keyshot the fans seem to kick in on full blast. They must be doing a decent job because the laptop doesn't seem to get too hot even under heavy loads (not like my last one which actually burned my lap once). I looked into it and apparently 100c is ok, though I'm not sure I swallow that, surely those sorts of temperatures can melt solder?. On this note, I'd like to see the ability to pause a render (similar to pausing real time rendering) to let your computer cool down a touch.
Ed
I have been running Macs since the early days of HyperShot and never had a problem.
100C sounds too hot for an i7 in a desktop. You might want to try a different temp monitoring program to make sure your software is reporting the temp correctly. I use Core Temp. I'm running about 55C rendering with 10 out of the 12 cores. If I overclock to 125%, I run about 75C. Idle is high 30s, low 40s.
My laptops i7 mobile CPU renders at about 75-80C with 8 cores. The fan speed is maxed out trying to cool the laptop even with an extra cooling pad under it. Idle is about 50C.
If your i7 CPU is also using the integrated GPU, that could explain the extra heat.
Mike 8)
Quote from: Thomas Teger on February 19, 2014, 06:47:21 AM
I have been running Macs since the early days of HyperShot and never had a problem.
Sorry, I may have been un clear. I have never had any problems running keyshot on any of my macs. My old 'banger' (2006 MBP 2.4 ghz dual core intel) ran it just fine, getting about 12fps with the camera scene. It did however get frighteningly hot, as did it's powerpack, but this was largely due to its slow frame rate forcing my to render each image for ages. My new MBP 2.6 quad i7 runs keyshot like a dream, at about 55 fps. It doesn't seem to get very hot at all, and I now only render each image for 10 mins on average. I'm only commenting on the tha fact that my new laptop seems to turn the fans on pretty hard as soon as keyshot boots up a scene - which isn't a bad thing at all. Iv never had temp monitoring apps on any machine, but my old banger definitely got to nearly 100c. In a nutshell, I think the fans and cooling system in the new mbp's are very efficient (but not particularly quiet) .
Either way, with my new MBP, keyshot running sweet, and rhino surely approaching an osx release I am a very happy chappy. Maybe I'm showing my age, but I'm astounded that I can do what I do, all on a super thin, beautiful machine weighing less than 4.5 lbs! Happy days. On the down side, mavericks is 'ticky' with zbrush, cs6, alias, mudbox, maya. I'm not even going to install these things until they run as sweet as keyshot. Adobe and autodesk could benefit from taking a leaf out of luxions book....get it sorted!
I just installed HWMonitor. Has similar readings to Core Temp. Actually, HWMonitor has much more data. My temps still show 50-55 C with 10 cores cooking in Keyshot.
Intel Haswell CPUs @ 100°C = no problem. :) At default clock speed that is...
These chips are designed to take the heat.
A 4770R @ 55°C will not last longer than @ 100°C.
I've managed to get temps below 90°C, by undervolting CPU.
Btw, I can totally recommend this unit as a headless network render node! ;)
Dries
Hi everyone
I was wondering, one year after... how the Brix Pro has performed and if for instance DriesV is still happy with is ?
Laurent
Quote from: DriesV on February 21, 2014, 05:20:07 AM
Intel Haswell CPUs @ 100°C = no problem. :) At default clock speed that is...
These chips are designed to take the heat.
100°C really is a bit much, as is confirmed by a response to the same question asked elsewhere (https://communities.intel.com/message/223617#223617). For short periods of time it might be fine, but for extended use it is ill advised.
Please note that chips and motherboards have safety mechanisms included in their design. This means that chips might throttle down or even completely shut down when operated at high temperatures. While this means doing damage is less likely, it also means getting less than ideal performance out of your chip, as it sacrifices performance to keep temperatures within check and damage to a minimum.
While Tcase temperatures for the 4770R are strangely omitted from the 4770R Intel Ark specifications, the very similar 4770K lists 72.72°C as the maximum temperature at the IHS and Allen from Intel in the link says this model tops out at just 66.45°C. Even if we ignore Allen's comment, the similar architecture and internal TIM mean that difference is limited. A 100 degrees seems too much either way.
Having such a small package combined with sustained full load operations seems less than ideal, typically you would want something more ventilated for the job. It must be noted that reports seem to indicate that throttling occurs exactly around the 100°C mark, which raises suspicions the chip in your system might already be protecting itself. I would advice increasing your airflow and taking a long hard look at chip behaviour while rendering.
That sounds mighty high!
I'm running a i7-4930k @ 3.4GHz and rendering at 42C with a Corsair water cooler.
Just to follow up on those discussions.
I am running a fully threaded application using the 8 threads of the i7 4770r.
If you disable the turbo mode, roughly the temperature goes up to 86°, while if you enable it, it can go as high as 100° but mostly around 95°.
Without the turbo, you'll loose something like 14% speed ? Up to 86° the Brix Pro is actually quite silent (30db?), at 95-100° ok that's very noisy ! (50-60db).
86° might be ok, yet I've seen somewhere on the internet that the Tcase of the i7 4770r (perhaps was it the Allen's comment ?) around 66-67°... while someone else has called intel and manage to have an answer that this i7 was designed to handle those temperatures..
That's why I was specifically asking to DriesV as he had the Brix Pro for more than a year for intensive computation.
My only problem with the Brix Pro is to know wether it can really handle those temperatures (either 86° or 95°) for long period of time. In theory I would say no and would not recommend it, but 1) the case and size is great 2) it's strange to notice the ventilator only starts above 85° and the high setting for this cpu is 84°...).
So anyone having experience with the Brix Pro for intensive computation on some time period is welcome to add his feedback to this conversation :)
Thanks Arn & DarkEdge