What is your definition of "stressed"?
Keep in mind that what KrazyTrumpeter says about not being able to damage equipment is, in my experience, often wrong. I've seen more than my fair share of poorly designed "prefab" systems that:
* were built with poor air circulation that caused frequent overheating, which isn't healthy even with proper sensors.
* had undersized power supplies that too would overheat and/or fail to deliver sufficient consistent voltages (which is extremely unhealthy)
* came from the manufacturer with exceedingly high default sensor settings that weren't much better than just having the sensors disabled (because, I figure, the manuf. didn't want to have the performance of their machine look worse).
Dell managed to pull off ALL THREE of these foopahs on the same machine in fact, and worse yet it was a business machine. It wasn't even being marketed to gamers! The Dell Optiplex GX280 w/ 3.2ghz P4 runs nominally at 60-70C and 80+C under moderate load (hot enough that the exhaust from the case fan feels like it's burning your skin, and it'll stink a room with the smell of burning silicon). The 210w power supply is barely enough to power the CPU, let alone the rest of the machine. And the thing has no power or heat saving features, so it just keeps powering along until it blows up.
... which is why to this day you can find GX280s on refurb for ~$100-$150, and can by them by the dozen, because Dell sold a million of them in 2004, and then had to take them all back when they died after 3-5 months of running Excel in an air conditioned office building.
edit: Sure a properly designed system should be stable and safe, but that depends on the word "properly." Most commonly I see other systems with undersized power supplies, and this is especially true of laptops, which tend to have stringent power restraints. So getting a high powered video card installed in a laptop can actually backfire on you, if you were under the impression that the card should be even more "resilient" to load. High powered GPUs need larger power sources, and few things cause hardware failures as quickly or efficiently as a failing power supply unit.
Keep in mind that what KrazyTrumpeter says about not being able to damage equipment is, in my experience, often wrong. I've seen more than my fair share of poorly designed "prefab" systems that:
* were built with poor air circulation that caused frequent overheating, which isn't healthy even with proper sensors.
* had undersized power supplies that too would overheat and/or fail to deliver sufficient consistent voltages (which is extremely unhealthy)
* came from the manufacturer with exceedingly high default sensor settings that weren't much better than just having the sensors disabled (because, I figure, the manuf. didn't want to have the performance of their machine look worse).
Dell managed to pull off ALL THREE of these foopahs on the same machine in fact, and worse yet it was a business machine. It wasn't even being marketed to gamers! The Dell Optiplex GX280 w/ 3.2ghz P4 runs nominally at 60-70C and 80+C under moderate load (hot enough that the exhaust from the case fan feels like it's burning your skin, and it'll stink a room with the smell of burning silicon). The 210w power supply is barely enough to power the CPU, let alone the rest of the machine. And the thing has no power or heat saving features, so it just keeps powering along until it blows up.
... which is why to this day you can find GX280s on refurb for ~$100-$150, and can by them by the dozen, because Dell sold a million of them in 2004, and then had to take them all back when they died after 3-5 months of running Excel in an air conditioned office building.
edit: Sure a properly designed system should be stable and safe, but that depends on the word "properly." Most commonly I see other systems with undersized power supplies, and this is especially true of laptops, which tend to have stringent power restraints. So getting a high powered video card installed in a laptop can actually backfire on you, if you were under the impression that the card should be even more "resilient" to load. High powered GPUs need larger power sources, and few things cause hardware failures as quickly or efficiently as a failing power supply unit.
Jake Stine (Air) - Programmer - PCSX2 Dev Team