Turbo Boost - on or off?
Turbo Boost - on or off?
Hello,
I've been mostly keeping my CPU's turbo boost turned off due to the extra heat it produces when active. When turbo is disabled, the limits are around 2.5 GHz and 0.958V for both speeds. But with turbo enabled, it can often go up to 3.1 GHz and 1.076V. Does higher voltage really cause more heat? If it does, then using more voltage would likely increase wear and reduce the CPU's lifespan. I've been trying to keep turbo off to minimize heat and extend its life. It also helps the internal fan run less when it's off.
Thanks.
Volts amps and watts form a triangle of connection (ohms law), volts are the one you can lower without hurting performance, it just stops working completely if they don<|pad|>. Watts mainly lead to excessive heat but limiting the maximum watts is defining a performance limit.
Every CPU has a maximum temperature rating, and as long as you stay under that it will last the same, it will fail from other factors before reaching the temperature limit.
Volts amps and watts form a triangle of connection (ohms law), volts are the one you can lower without hurting performance, it just stops working completely if they don<|pad|>. Watts mainly lead to excessive heat but limiting the maximum watts is defining a performance limit.
Every CPU has a maximum temperature rating, and as long as you stay under that it will last the same, it will fail from other factors before reaching the temperature limit.
Logically, higher GHz levels also correlate with increased power usage, so they're essentially similar in impact. I can't reduce the voltage because of the CPU's Ivy Bridge architecture. You're asking about the maximum temperature before throttling occurs—it's 105°C, but even though it doesn't throttle at 104°C, I don't think the difference in longevity would be as significant as running at 55°C instead. That doesn't seem logical. "It will break from other things before breaking from the temps" — could you clarify what you mean by that?
When performing the same task at a higher Ghz, power consumption will increase. If all three parameters are constrained (volts, amps, watts), then lowering Ghz will also lower the others. The CPU's safety temperature is about 10 degrees above its throttle temperature; if you only hit the throttle temperature, it will likely fall below safe limits. This suggests it won't fail outright but could fail due to physical damage from bending pins or other mechanical issues.
It's similar to driving at a steady 30mph (50kph) in high gear to extend engine life. This approach benefits both the environment and your budget, though it does mean slower performance in computing tasks. Turbo boosting activates only when required. When working on documents in Word, turbo won't be used much. In demanding games, however, it can significantly enhance the experience.
To reach higher clock speeds, the BIOS adjusts CPU voltage in several stages. A greater voltage is necessary to ensure stability. The quicker the CPU runs, the more volts are required.
With higher voltage comes increased current draw by the CPU, which in turn raises power loss. Volts multiplied by Amps equals Watts.
In digital circuits, most power use comes from individual transistors flipping between 0 and 1. The faster the clock, the more frequent these transitions, leading to higher power use.
This is why quicker CPU speeds produce more heat—basic physics at work.
I own a fully functional laptop from 10 years ago. A friend has one nearing 15 years old. There are even older models that could still function after over 20 years, aside from battery life.
How long do you plan to use your laptop? 10, 20, or 30 years?
Restricting turbo boost likely won't noticeably affect laptop lifespan, unless you run intensive encoding software continuously.
Yes.
No. Unless you're performing intense overclocking.
No. It doesn't affect how long the device lasts.
Even with turbo boost active, you're still operating within normal limits.
Likely not.
Unless your laptop's battery is depleted and you're forced to save energy.
Thank you for your message. Based on the image, the safe temperature for my CPU is around 110°C. I usually try to keep it below 100°C, but during a stress test it reached 98°C without throttling, as shown by HWInfo. Also, higher clock speeds usually mean the internal fan runs faster, so turning off turbo boost might help the fan operate more efficiently and last longer.
Good points there, indeed by doing so I'm not fully utilizing the performance. But it never feels like the CPU is being bottlenecked with turbo boost off. In my experience it was the HDD and, now with the SSD, a few GHz increase doesn't seem to be noticeable except for maybe a few FPS in games and benchmark tests. My laptop is also about 10 years old. Obviously it wasn't working 7/24 for the past 10 years but I still want it to work for about the next few years.