Lenovo Thinkbook K4 Review: Portable And Efficient “true” Mobile Office Productivity


[Bestbuy618 Notebook Channel] The hybrid office model, which combines office work, home work, and mobile work, has emerged as the new standard. As a result, notebook computers, which are the most productive for business people, are facing more complex and demanding challenges. It must be portable while also offering a quick wake-up time, efficiency, and longevity in frequently switched use scenarios. Only then will notebooks be able to keep up with the fast pace of the modern office and keep users from “exploding in their heads” as a result of computer lag and program crashes.

This is why notebooks are an important part of corporate IT procurement, and the ThinkBook K series is a dependable workplace partner capable of meeting the needs of modern office users. The ThinkBook K series, Lenovo’s exclusive series for large business customers, includes two sub-models, the K3/K4, corresponding to 13 and 14 inch models, with customizable configurations.

The Lenovo ThinkBook K4 under review is equipped with 11th generation Intel Core processors, which can provide efficient productivity. What’s more impressive is that the ThinkBook K4 is capable of delivering stable and reliable performance in “real” mobile office scenarios (unplugged), easily handling more complex usage scenarios. So, without further ado, here’s a comprehensive review of the ThinkBook K4.

The A-side is adorned with only two logos, Lenovo and ThinkBook, and the frosted material has a fine feel and is resistant to fingerprints and sweat stains, ensuring neatness.

The ThinkBook K4 has an ultra-thin aluminum body that is approximately 14.9mm thick and weighs approximately 1.27kg (the 13-inch ThinkBook K3 has the same thickness but weighs 1.26kg less), so it doesn’t feel significantly heavier whether it’s on your lap, resting on your arm, or in your backpack. And, thanks to the narrow bezel design on all sides, the entire machine is more compact, so even a girl’s satchel can fit easily. It is also worth noting that the ThinkBook K series offers two types of USB C power adapters: two-stage and wall-plug, the latter of which is 45 percent smaller and weighs only 200g, further reducing the burden of carrying it around. Furthermore, the I/O ports on the left and right sides of the ThinkBook K3/K4 are locked with alloy clips, making them even stronger and more durable.

The ThinkBook K4 has a 14-inch 16:9 ISP Full HD screen with a narrow bezel design and a screen-to-body ratio of 90 percent, which provides a stronger sense of visual immersion and allows the eyes to focus on the screen content and enhance work concentration. The ThinkBook K3 also includes a 13.3-inch IPS touchscreen with a resolution of up to 2560×1600, and all ThinkBook K series screens support a high color gamut of 100 percentsRGB, ensuring “what you see is what you get” when viewing images, browsing materials, and renderings.

It’s worth noting that the screen on the ThinkBook K3/K4 supports 180° opening and closing, making it easier to share screen content during meetings and brainstorming sessions. You can also use this design to hang the computer on your desk and use the screen to rise to a “C-side height” to relieve neck pressure and fatigue from long hours of work. The ThinkBook K4 also has a highlight – the camera. The ThinkBook K series not only includes a camera with an indicator light and dual microphones, but it also supports physical anti-voyeurism, which eliminates clandestine photography and recording to protect privacy.

Despite its compact size, the ThinkBook K4 keyboard does not feel constrained when recording, and the moderate key range provides a good sense of percussion and confirmation, while the optional spill-resistant backlit keyboard adds an extra layer of protection. The metal-cut silver edges of the touchpad add a bright accent to the deep C-side while also enhancing the texture.

The ThinkBook K4 still has a larger touchpad, making it more convenient for mobile use scenarios without a mouse. The power button on the ThinkBook K4 is located in the upper right corner of the C-side, with optional integrated fingerprint recognition for faster and safer “one-touch system access.”

The ThinkBook K4 has a complete set of interfaces. Thunderbolt 4 (power connector), one HDMI, and one headphone and microphone 2-in-1 interface are located on the left side of the body, while two USB 3.2 Gen 1 and computer lock holes are located on the right side of the body (the more compact 13-inch ThinkBook K3 also supports the same interface). The ThinkBook K3/K4 has onboard memory that cannot be replaced, like many thin and light notebooks, but the M.2 SSD can be replaced after removing the protective D-side case. The ThinkBook K3/K4’s processor, memory, and storage are all available in a variety of specifications that can be customized.

The processor supports up to 11th generation Intel Core i7 processors as well as AMD Raider 7 5800U processors; memory supports up to 16GB LPDDR4X 4266MHz; and storage is available in 1TB PCIe NVMe. The overall energy efficiency of the 11th generation Core processor has been improved thanks to 10nm SuperFin process technology, the new Willow Cove micro-architecture, and the Torch Xe graphics card, so it provides better productivity in a wider range of application scenarios and expands the use scenarios of ThinkBook K3/K4. The ThinkBook K3/K4 represents a new generation of ThinkBook.

In addition, the 11th generation Core i5-1135G7 brings Thunderbolt 4, Wi-Fi 6, and LPDDR4/4X-4266 to the ThinkBook K4. LPDDR4X 4266MHz memory read and write speeds have been measured to be more than 62,000MB/s, which is quite impressive. When combined with a solid state drive with read speeds close to 2500MB/s, it provides a faster system and program startup experience and can wake up the device in time to enter work mode when the office scenario switches quickly. The performance of the ThinkBook K4 was tested by CINEBENCH, CPU-Z, PCMark 10 and other testing tools, with the following results.

Of course, performance output is only one of the ThinkBook K4’s highlights. It is also of interest to workplace professionals that this product still provides efficient productivity in a real mobile office scenario without being plugged in. The hybrid office has become the new normal, and business people from all walks of life have mobile office needs.

As a result, in the real mobile office scenario of saying goodbye to power, notebooks must also provide dependable productivity, or else. Consider this scenario: you’re on your way to work, on your way home from work, or even sitting in a coffee shop when your boss or a customer calls and says, “Send me the latest report.” At this point, no matter how repulsive it is in your heart, you must remove the computer and move the bricks! However, in the scenarios described above, it is difficult to ensure that the laptop can be connected to the power supply.

If the device does not perform well when not plugged in, you must watch the computer spin in a state of anxiety and urgency caused by the boss’s or customer’s urging. Of course, if the laptop can also deliver consistent performance when not plugged in, the situation changes. Reliable productivity allows you to respond calmly in a variety of environments and ensure efficiency even when editing and revisions are required.

A very important advantage of the ThinkBook K4 – in mobile office scenarios, it can provide stable productivity even when not connected to a power source and using battery power. When the x264, x265, and V-Ray tests were run without being plugged in, the highest drop in performance was about 9%.

In several real-world productivity tests, ranging from light office PPT to PDF to higher-load image processing, the ThinkBook K4’s performance drops by about 10% from plugged in to unplugged. The ThinkBook K4 not only provides efficient productivity when unplugged, but also provides long-lasting battery life to avoid power crashes at critical times. With a large 56Wh battery, the ThinkBook K4 lasted nearly 13 hours and achieved a performance score of 7259 in PCMark 10 Modern Office mode, with screen brightness at 50%, volume at 20%, and Wi-Fi connection.

So, even if you forget to bring a power supply to work, you can easily achieve 8 hours of unplugged daily office time. Lenovo has been working on the business market for many years and has a keen understanding of the needs of business users, so while improving the notebook product line, it not only incorporates more innovative features, but also takes into account the demanding requirements of business users for device reliability and stability.

After all, while catching up on a TV show, a lag will only affect the immersion of watching, but if the computer lags during a video conference or presentation of a proposal, it will not only affect efficiency, but may even cause unnecessary losses. As a result, Lenovo has taken into account the stability and reliability of the ThinkBook K series in terms of hardware, software, and services, and has passed a number of professional tests. The first hardware aspect includes the aforementioned multiple configuration specifications, an aluminum metal body, fingerprint recognition, physical anti-peek, I/O port locking, and other designs.

The cooling configuration of the ThinkBook K4 includes dual fans, a large diameter long copper pipe with an even heat plate covering a large area of the motherboard that can export heat in a timely manner, and a large diameter long copper pipe with an even heat plate covering a large area of the motherboard that can export heat in a timely manner. Furthermore, the ThinkBook K4 has thermal pads on the SSD.

The ThinkBook K4 is a fully loaded stability test, with a stable processor power output of about 24W and an average CPU temperature of around 75°C. In terms of software, the ThinkBook K4 comes pre-installed with Lenovo Computer Manager, which supports “Fn Q” one-key mode switching, allowing the system to flexibly switch between high performance and long battery life based on user needs. At the same time, Lenovo’s perfect after-sales system – more than 1,400 spare parts centers, more than 2,400 outlets, and more than 6,000 national authoritative certified program service engineers – can professionally and efficiently solve problems encountered by users.

Lenovo also provides dedicated telephone support for major customers, IT asset environmental disposal, non-standardized and other related services that can be better tailored to the needs of enterprises and flexible shopping, and to protect user assets and data security, eliminating worries and helping to reduce costs and increase efficiency. They have less tolerance for IT equipment because they grew up with the Internet and PCs, and equipment lag and slow operation will not only affect work efficiency, but also work status and mood.

In this regard, businesses are being urged to pursue a more aggressive IT equipment refresh strategy; otherwise, a lack of enthusiasm for work due to poor laptop performance will result in a “mind explosion,” and the loss will not be worth it.

So, whether it’s to welcome new blood or improve enterprise efficiency, or to promote digitalization with IT refresh to take the lead in market competition and explore new business models, Lenovo ThinkBook K series with wide applicability is one of the choices worthy of consideration when refreshing IT equipment, with portable and efficient “real” mobile office productivity, assisting enterprises to improve quality and efficiency.