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| LG Gram Book 15 may be one of the quietest 15.6-inch laptops in recent memory |
In the crowded world of budget laptops, finding a machine that gets the fundamentals right often feels like a game of whack-a-mole. You might get a great processor, but the fans scream like a jet engine. You might find a silent runner, but it chugs on basic tasks. LG, a company better known for its featherlight Gram series, has entered the budget arena with the Gram Book 15, and it has made a fascinating, deliberate choice.
While we aren't big fans of the display on the LG Gram Book 15—a common cost-cutting measure at this price point—we still have to admit that the laptop strikes an intriguing, if controversial, balance between performance and fan noise. In a move that defies the typical "faster is better" arms race, LG has intentionally handicapped the CPU performance to keep the laptop whisper-quiet.
As our deep-dive into the performance metrics reveals, this isn't a case of poor engineering; it's a case of specific prioritization. When compared to other laptops wielding the same Intel Core Ultra 7 255U processor, the Gram Book 15 runs a staggering 20 to 25 percent slower. To put that in perspective, machines like the Lenovo IdeaPad 5 2-in-1 or the ThinkPad T14s 2-in-1 will leave the LG in the dust in raw processing power.
But before you write it off, consider the flip side. Under demanding loads—the kind that would typically send a laptop's cooling system into overdrive—the Gram Book 15 emits a barely-there hum of just ~28 dB(A) against a silent background of 25 dB(A). Those aforementioned Lenovo models? Under similar stress, they can blare past 41 dB(A) .
For users who prioritize a serene work environment over sprinting through video exports, LG’s approach suddenly looks less like a weakness and more like a feature.
The "Silent Mode" by Default
The philosophy here is clear: LG has tuned the Core Ultra 7 255U to operate within a very conservative power envelope. The result is a laptop that remains cool and inaudible even when you're pushing it. However, that 25 percent performance reduction is a difficult pill to swallow, as it essentially negates the generational leap of the new chip.
What’s most striking is that the LG Gram Book 15 trades blows with last year's models. For example, in CPU benchmarks, it performs nearly identically to the HP Envy x360 15, which is powered by the older Core Ultra 7 155U. You are paying for next-gen silicon but getting previous-gen speeds—all in the name of silence.
One has to wonder: would a simple "Maximum Fan" mode in the software have been too much to ask? A toggle that allows the fans to spin up to, say, 35 dB(A) in exchange for unlocking the full 20% performance boost would give users the best of both worlds. As it stands, owners are locked into a single, quiet, but slower profile with no option to unleash the beast when they need to crunch a spreadsheet or render a video quickly.
CPU Performance at a Glance
The numbers don't lie. Here’s how the LG Gram 15U55T stacks up against the competition using the same Intel Core Ultra 7 255U processor:
- Lenovo ThinkPad T14s 2in1 Gen1: 83.9 pt (+11% faster)
- Lenovo IdeaPad 5 2-in-1 16IAL10: 82.6 pt (+10% faster)
- Average Intel Core Ultra 7 255U: 76.6 pt (+2% faster)
- HP Omnibook 5 16-af1037nr: 75.6 pt (0%)
- LG Gram 15U55T: 75.3 pt (Baseline)
- HP 17t-cn500: 65.5 pt (-13%)
*Note: A full suite of tests including Cinebench R23, Geekbench, 7-Zip, and Blender confirms this trend.*
The "Library-Ready" Advantage
Where the LG Gram Book 15 completely flips the script is in the noise department. If silence is golden, this laptop is a treasure chest. Check out how its acoustics compare to the competition—remember, lower is better here.
- Load Average Noise:
- LG Gram 15U55T: 25.6 dB
- Lenovo IdeaPad 5 2-in-1: 41.8 dB (63% louder)
- HP Envy x360 15 (older CPU): 43.5 dB (70% louder)
- Maximum Load Noise:
- LG Gram 15U55T: 28.1 dB
- Lenovo ThinkPad T14s: 41.8 dB (49% louder)
- HP Omnibook 5: 45.8 dB (64% louder)
In real-world terms, the LG is virtually silent under load. In a quiet office or a library, you’ll barely know it’s on. The competition, however, requires headphones or a separate room if you don't want to annoy the people around you.
The Catch: A Screen That Disappoints
Of course, the conversation around the LG Gram Book 15 can't ignore the elephant in the room: the display. As we explored in our initial hands-on, this is where the "budget" label hurts the most.
For a more detailed critique of the screen's color accuracy and brightness, you can check out our dedicated review here:
LG Gram Book 15U55T: A Budget Laptop That Picks Its Battles
While the quiet operation is a blessing for the ears, the dim and lackluster panel is a strain on the eyes. It’s a frustrating dichotomy: you have a laptop so quiet it won't disturb your movie-watching experience, but a screen that makes that same movie look dull and washed out.
Conclusion: Who Is This For?
So, is the LG Gram Book 15 a brilliant compromise or a missed opportunity? It depends entirely on your needs.
Buy the LG Gram Book 15 if: You are easily annoyed by fan noise. If you are a student who studies in quiet libraries, a writer who needs to focus without distraction, or an office worker in a silent open-plan space, this laptop is a godsend. The performance is still perfectly adequate for web browsing, document editing, and media consumption (even if the screen could be better).
Skip the LG Gram Book 15 if: You need processing power for video editing, coding compilations, or heavy multitasking. Paying for a Core Ultra 7 and getting Core Ultra 5-level performance feels like a bad deal. Also, if you consume a lot of video content or work with photos, the poor display quality—detailed further in our follow-up review—is a dealbreaker.
Ultimately, LG has created a niche product. It proves that sometimes, what a laptop doesn't do (scream like a turbine) is just as important as what it does. But in a market that demands versatility, the lack of a performance mode and a sub-par screen might confine the Gram Book 15 to a very specific, quiet corner of the market.
For a deeper look into where the cost-cutting went too far, read our full analysis here:
LG Gram Book 15: When Budget Cuts Cut Too Deep