A friendly reminder
This article is only for the goal isOftenNotebookTake it out and use it off the powerThe crowd!
For just a few movesBatteryWhen using a UPS for 5kg martial arts practitioners, it's not suitable for overweight laptops. I've been using a light-weight mix as a daily choice for several years.
No product recommended! If you post related information in the comments, I'll pretend I didn't see itIf you ask irrelevant questions or those already explained in this article, you may also pretend not to see them.

Nowadays, which indicator stands out most in manufacturers' promotions for ultrabooks and all-rounders?
I would say yes, performance release

Is the performance release good?
A bit higher is certainly better.
The higher the performance,ApplicationThe faster it runs.
However, the impact on experience improvement is not significant, and if it brings negative side effects of experience improvement, that would be bad
So I recommend sometimes compromising or even deliberately sacrificing performance release.

We all know thisMobile phonesProcessors have an efficiency curve,
The general formula is,
Put the processor downPower consumptionCutting from maximum to half reduces performance by about 20%.

Very well, the same logic applies to laptop CPUs and GPUs

For example, an all-rounder laptop weighs 1.6kg and has a large battery of 99Wh
We provide it with 80W continuous performance output,
Isn't that great?
At the extreme performance, we assumed the power consumption of fans, memory, power, and screen at a low 30W
Add them up and divide by battery capacity,
From full charge to dead battery, you can only use it for 54 minutes!!
Loses 1% of the battery every 30 seconds!!
You'll see the battery drain at a speed visible to the naked eye!!

We cut power consumption in half, reduce performance by 20%, and double the usage time!
With battery power, you can run twice as long at 0.8x performance, and your total usable compute load is actually 1.6 times higher than before!

If you really need to take it out the door, does running it at 80W improve the experience? The answer is negative lift
You haven't done anything, just reduced performance,
Overall, it can be used for more calculations and more tasks!
Not to mention issues like heat generation and noise—those are the same old topics.

We then reduce power consumption to a quarter of the original, just stepping out of the high-load sci-fi realm and entering the threshold for heavy daily office work.
At this point, we have to face some practical issues.

You say, OP, I hope the laptop I bought can last at least one morning for heavy office work.
I left home with a full battery in the morning, opening 3D modeling/programming/editing/photo editing software, while opening WeChat, QQ, DingTalk, and WPS all in my browserI worked all morning, and before lunch, the battery was almost dead. If I really couldn't do it, I found a corner to squat and charge it for a bit, then continued using it in the afternoon.

Alright, that's about 8 to 12 o'clock, 4 hours. Most people don't use it twice a day until 0% is left with no room for improvement. Let's consider using it from 95% to 15%, and you'll need at least 5 hours of battery life.

With a 99Wh battery and 5 hours of use, less than 20Wh per hour is used. For an all-rounder, the CPU + GPU is typically split at 10W, and the fan and memory power supply at 10W.

We're talking about the maximum capacity that can be brought on an aircraft under the 99Wh regulation. Many ultrabooks only have 50-70Wh, so the 5 hours of battery life allocated to the CPU and GPU are even more limited.

Sorry, many reviews haven't tested laptop CPUs and GPUs at around 10W energy efficiency,
Let me tell you a secret,
Because some impressive stats on paper can easily reveal that you've pulled a big chunk at this point

Tell me,
"OP, when I choose a laptop, I love reading reviews. I pick the one with the strongest performance. If the performance is low, how is it any different from a phone or tablet?"

Of course, you can pay for the best performance in your laptop by installing the 5090.
However, with a target battery life of 5 hours and a GPU power budget not exceeding 10W,
If you give the Snapdragon 8E5, its performance can reach 1060 or even 1660 fps.
If you give the 5090, its performance is zero and it won't light up at all!

This is another key point when it comes to choosing range.
If manufacturers promote and pursue performance under high performance, then the overall tendency of laptops will inevitably favor high performanceOptimization！
Hardware that tends to release high performance struggles to perform well under low load, often just eating without doing the workIt requires a lot of power consumption just to barely start working, using more power to achieve barely usable performance!

Not only CPUs and GPUs, but when screen, memory, and power supply are all focused on high performance, they consume the most power at the low-load side.
When the total power consumption is 100W, the peripheral parts are just 20W of water.
At 15W total power consumption, the peripheral parts are 12W, and the remaining CPU and GPU are 3W. Even if you use a CPU or GPU with a low power leaning, the performance will still be poor!At the same power consumption, the CPU and GPU are overwhelmed by 3W of peripheral power and 12W of GPU distribution.

Of course, balancing high performance and low load in a whole system design is difficult but not impossible—it requires extra money!
For example, why are Apple's MacBooks priced higher for the same performance? Because not to mention 10W—the M series can perform decently at just 1W, similar to a phone processor. Its 16-inch laptop uses 4W power enough for light work.
If you want to buy a high-performance, cost-effective product, especially since some manufacturers love to mock MacBook, don't just look at some products whose absolute performance dominates others. 100W power consumption is a continuous system, under 10W is a bug, and in low-power ranges, it just consumes power without doing much work, releasing performance that leaves the M series far behind.

If you want to ensure the best five-hour heavy work experience, and you say you want to spend less, you want to buy a cost-effective product! If I only have a review for Qiafan, what should I look at?
It's simple: for similar hardware, choosing a large battery + performance output is a bit lacking, and even a continuous performance output of only 15-25W is sufficient
It can reach the sweet spot, meaning it's half or even one-third of the processor's maximum thermal design power, 65%-80% of maximum performance is sufficient.
Even if the manufacturer can't handle both high and low ends, since the high end can't be reached, they naturally prioritize hardware that is comfortable only for low-load use.

Even with tuning, these power consumption figures are still quite impressive

So, OP, if I choose a product with poor performance output, does that mean I lose out forever, like 20%-35% of the performance?
Not necessarily
Using a laptop is a dynamic process,
Many products' hardware designs cannot sustain high loads, but that doesn't mean peak performance can't be achieved; they can maintain a 30-second or even 5-second high-energy state, which is sufficient
Many times, what you lack is those 5 seconds.
The moment you open the software, it freezes; at the critical moment, it freezes.
If you give it 30% extra performance in 5 seconds, it's very likely that it won't lag
Moreover, during several hours of use, if you only use this 1-5 second peak performance a few times, the extra power consumption has minimal impact on overall battery life.
This is the crucial role of tuning in a laptop's smoothness and battery life. When should you unlock a bit of extra performance to ensure smoothness, and for how long? To what extent did it improve? When is user perception weak and power consumption should be kept low to maintain battery life?
There is a lot of knowledge involved here
With identical hardware, good tuning can improve battery life by 20%-40% while maintaining smoothness, or even smoother.
Many products come from their super cost-effective performance, simply stacking hardware together and releasing Windows, which doesn't necessarily mean the experience is good.
A good training is something you have to pay for

All of the above,
And it was only a full morning of heavy office work
You know, OP, I want to use it for eight hours, ten hours, or twelve hours in actual light use, and use the exaggerated battery life given by the GeekBay Pen Bar review room. I want to use my phone in the morning + afternoon without charging, fully charged, and head out all day.

Alright, this battery life is almost impossible for a high-performance all-rounder.
For a 70Wh long-endurance ultrabook, 8 hours of actual battery life corresponds to 95%-15% of the battery, which means 10 hours ~ 7W per hour.
This 7W is distributed among the CPU, GPU, memory, screen, power supply, and so on. If you can split CPU + GPU at 4-5W and power consumption at about 2W while station, that would already be an excellent overall design

Here's a suggestion that defies common sense:
Throw away the high refresh rate screen!

That's right! KOL is hereScriptWhen evaluating battery life, performance is often overlooked—in other words, whether it lags during actual use
So, manufacturers will also optimize in this direction for benchmark scores. Is it really about performance? If you hold on, your grades will improve.

Most long-endurance laptops that can handle this level will experience slight frame drops and a slight delay under this average power consumption limit.
In other words, even maintaining 60Hz has become a rare achievementWhy would you need screens at 90Hz, 120Hz, or 144Hz?

Conclusion:
The English name for laptops is 'laptop', and it can be used on the top of the lap thighComputer
But if you really need to use your laptop comfortably without a desk or power,
You buy according to many manufacturers' marketing directions, KOL guidance, and the so-called 'laptop enthusiasts' crowd. If everyone says this thing is good, just buy it
You realize what you bought isn't a laptopIt's a lightweight desktop you can carry around, searching everywhere for power outlets. Wherever you go, charger + mouse are inseparable—you can buy a der
I originally wanted to talk about it all at once, but later realized there was too much—just talking about performance alone could take so long
Actually, it's easy to spot the contradictions here. Today, when I point it out, who has noticed that something was really off before?

Battery life-saving version,
Half an hour, and anyone who practices using batteries as UPS can buy it
Two hours, a value-for-money laptop focused on performance release is worth buying
One morning, giving up on high-performance release, truly chasing it means you have to pay more
All day long, give up more and endure stickiness to enjoy the battery life