Questions mostly about CPU

[SecretX]

For convenience, let's assume a i7 8700K paired with a MSI Z370 SLI Plus, using the Cryorig H7 as cooler, with a Gigabyte GTX 1080 (Blower Style), 2 random RAM sticks and all these parts are inside of a HAF 912.

 

1. Can I damage my CPU by undervolting it? Like set the voltage to manual and set it to 0.5V or something like that.
2. Can I damage my CPU by underclocking it and keep the same voltage? Let's assume that the default voltage of i7 8700k is 1.18V, and I underclock the processor to 1GHz and keep the same voltage (aka auto mode).
3. Can I damage my CPU by overvolting it? Let's say that I inadvertently set the CPU voltage to 1.7V into the bios, what could happen?
4. Can MCE (multi core enhancement) somehow damage my CPU (or reduce it's lifespan by more than 20%)?
5. What should I do if I mislead something into the bios settings and my PC doesn't boot anymore (whereas my mobo is the one specified above)?
6. Let's say my new i7 8700k has 20 years left (with stock settings), OCing it to 4.7GHz will reduce it's lifespan by how much (approximately)?

And a question non-related to CPU:

      7. "Blower Style" (1 fan, exhaust the hot air to out of the case) video cards have a performance reduction of more than 5% compared to their "Open Air" variants (2 or 3 fans, exhausting hot air into the case)?

[pyrojoe34]

2 minutes ago, SecretX said:

For convenience, let's assume a i7 8700K paired with a MSI Z370 SLI Plus, using the Cryorig H7 as cooler, with a Gigabyte GTX 1080 (Blower Style), 2 random RAM sticks and all these parts are inside of a HAF 912.

 

1. Can I damage my CPU by undervolting it? Like set the voltage to manual and set it to 0.5V or something like that.
2. Can I damage my CPU by underclocking it and keep the same voltage? Let's assume that the default voltage of i7 8700k is 1.18V, and I underclock the processor to 1GHz and keep the same voltage (aka auto mode).
3. Can I damage my CPU by overvolting it? Let's say that I inadvertently set the CPU voltage to 2.0V into the bios, what will happens?
4. Can MCE (multi core enhancement) somehow damage my CPU (or reduce it's lifespan by more than 20%)?
5. What should I do if I mislead something into the bios settings and my PC doesn't boot anymore (whereas my mobo is the one specified above)?
6. Let's say my new i7 8700k has 20 years left (with stock settings), OCing it to 4.7GHz will reduce it's lifespan by how much (approximately)?

And a question non-related to CPU:

      7. "Blower Style" (1 fan, exhaust the hot air to out of the case) video cards have a performance reduction of more than 5% compared to their "Open Airl" variants (2 or 3 fans, exhausting hot air into the case)?

1. If it's stable, no, if it's unstable, yes. Always run thorough stability tests when changing CPU defaults. It's very unlikely that you'll get it to run stable at stock clocks at 0.5V so you'll have to underclock it as well.

2. No

3. Only if it is unstable or the temps are too high.

4, As long as it is stable and the temps are fine then it won't cause damage.

5. Reset the CMOS (either click the reset button/short the reset pins, or remove the CMOS battery for 30sec)

6. Impossible to say, it's almost negligible if it is stable and cool. Nobody is going to run the same CPU for 20yrs anyway.

7. Only if the card is reaching it's thermal limits. Since blower coolers are less effective than 3rd party coolers then they will usually reach the thermal limit sooner, however if your room is really cool then a blower will give the same performance as a 3rd party cooler (ignoring factory OC contributions).

[mynameisjuan]

1.no

2.no

3.Yes, but only if you really really over volt it. pushing it to like 1.35 or 1.4 might make it run hot but CPUs will throttle. It actually really hard to fry a CPU.

4.NO

5.Pull your cmos battery and unplug power. 

 

 

6....there is no proof that OC damages or reduces the life span of CPUs. You wont have that 8700 in 20 years or maybe even 10. Just overclock it and forget about life span. Just keep temps under a 100c for good measures. 

 

7. For some reason blower cards run hotter even though they by design push more air. Its weird but thats what happens. 

[Thinkfreely]

So now a days its actually really really hard to fry a cpu.

[mynameisjuan]

5 minutes ago, Thinkfreely said:

So now a days its actually really really hard to fry a cpu.

Yeah its really hard. The only way I could think it would be possible is to like crank the voltage like above 2.0v if that is even possible, where the amount of voltage would fry it before safety measures kicked in.