"Not enough Memory" - crashes, freezes and more

[Ughmahedhurtz]

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I just noticed your name, Ughmahedhurtz. I love it! It is something like I might have used as a chronic migraineur!

I have a last name...

Next again:
Re CPU temps. You state "Watch it for 15 minutes or so and if the thermals don't climb past 65-70..." this makes me curious. My CPU, a XEON X5675, at idle is 33.4°C. During the testing or when I otherwise max all 12 logical cores at 100% it maxes out at 80.1°C. This didn't seem like a problem as the specs for the CPU state the max temp at the heat spreader to be 81.3°C. Am I mistaken in this? 80°C does seem hot but within spec, so I assumed it was fine. If not I will look for a better cooling option.

TL;DR wall incoming...
Preface question: what does yours do under the max gaming real-world load (as opposed to stress test)?

Here's the thing about the thermals, in my experience. Consider heat soak. Your GPU, SSD/HDD, chipset, and PSU all generate heat. Your PC sitting idle will probably feel cool to the touch. When you hammer it, that spikes the CPU/RAM temps (and maybe GPU if you're running a stress test on that too) which introduces more heat into the chassis. At some point, the amount of heat load in the system may exceed the ventilation system's ability to exhaust it, which ends up causing in effect a thermal runaway. Realistically, few chassis have such poor thermal design that they'd completely runaway to meltdown (*cough*macbook*cough*), but having your fans opposing each other or something like excessive dust buildup can dramatically reduce the effectiveness of fans, heatsinks, etc. HP went from multiple fans to a ducted single-fan design to allow for smaller (read: cheaper) cases/fans/heatsinks to be used on the same CPUs. I like to run H80i CPU coolers with 4x Noctua quiet case fans in mine, which usually results in easy sub-70C stress temps and the loudest thing in the room is the NVidia fan.

I also usually try to allow for fan death or "unexpected results" in my testing as I'd rather have an unexpected spike to 80-85C instead of an unexpected spike to dramatically over-spec temps, especially if something prevents the auto-shutdown feature from saving itself. Again, much less of a problem with more modern stuff but with the way CPU build costs have been elevated lately (yours is or was $1400), I see no reason to risk heat-induced early system issues.

That said, the XEON X5675 specs show a TCase temp of 81.5C. I can't find a reasonable logical relation between TCase temp (the temp at the integrated heat spreader on the CPU itself) and a reading from CoreTemp/etc. Example of where temps are measured, at least on an older system:



Generally, I'd expect ~12C to be a reasonable difference, meaning yours should be *technically* OK up to ~93C core temps, but again that's just a guess based on anecdotal evidence. :P And I sure as hell wouldn't want to run it at 80C+ for extended periods. My hardware engineer colleagues constantly talk about how the lifespan of capacitors/transistors is directly related to how hot they run, and it's not a linear function.