Asus Zenbook S 13 OLED UX5304 vs Lenovo Yoga Book 9i 13" Comparison

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Asus Zenbook S 13 OLED UX5304

13.3 inches | April 2023

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Lenovo Yoga Book 9i 13"

13.3 inches | March 2023

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Asus Zenbook S 13 OLED UX5304 vs Lenovo Yoga Book 9i 13" Comparison Overview

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In this review, we will be comparing Zenbook S 13 OLED UX5304 and Yoga Book 9i 13", two laptops from Asus and Lenovo. Asus Zenbook S 13 OLED UX5304 was introduced to market in April 2023 and Lenovo Yoga Book 9i 13" was launched in March 2023. There is only 1 months difference between Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" so we are expecting this to be a fair comparison regarding age and technology level.

Click for Available Configurations of the Laptops

Here is a brief look at the main features of Asus Zenbook S 13 OLED UX5304 and Lenovo Yoga Book 9i 13" before getting into our more detailed comparison.

Asus Zenbook S 13 OLED UX5304 Key Specs

Launched in April 2023
13.3" OLED, 16:10 Aspect Ratio Display
CPU: Intel Core i5 1335U
GPU: Intel Iris Xe Graphics G7 (80EU)
16GB Ram
296.2 x 216.3 x 10.9-11.8 mm (11.66 x 8.52 x 0.43-0.46 inches)
Weight: 1 kg (2.21 lbs)

Lenovo Yoga Book 9i 13" Key Specs

Launched in March 2023
13.3" Touchscreen - OLED, 16:10 Aspect Ratio Display
CPU: Intel Core i5 1335U
GPU: Intel Iris Xe Graphics G7 (80EU)
16GB Ram
299.1 x 203.9 x 15.95 mm (11.78 x 8.03 x 0.63 inches)
Weight: 1.34 kg (2.95 lbs)

Let's read on the following sections in order to better understand in detail how Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" compares and decide which one is better for you.

**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose Asus Zenbook S 13 OLED UX5304 over Lenovo Yoga Book 9i 13

Weight	1.00 kg vs 1.34 kg	0.34 kg lighter
Side Bezel Thickness	4.8 mm vs 6.3 mm	1.5 mm thinner bezels
DCI-P3 Color Gamut	100% vs 99.8%	Wider DCI-P3 Color Gamut
Adobe RGB Profile	96.1% vs 95.4%	Wider Adobe RGB Coverage
Max Brightness	550 nits vs 400 nits	Brighter Screen
HDMI Port	1x HDMI 2.1 vs No	Connect to external monitors directly via HDMI cable
Keyboard Backlight	Yes vs No	Easily see the keys under low light
Avg. MSRP Price	$1200-1600 vs $4400-4800	Lower Price (*may change depending on config, seller, location, and time)

Reasons to choose Lenovo Yoga Book 9i 13 over Asus Zenbook S 13 OLED UX5304

Screen-to-Body Ratio	~84.1% vs ~80%	Larger screen area ratio
Noise Level	38.3 dB vs 40.1 dB	Less fan noise
2-in-1 Design	Yes vs No	Use like a tablet
Touch Screen	Yes vs No	Interact with your fingers
Charging Port Position	Left, Right vs Left	Flexible cable positions
Speaker Loudness	85.8 dB vs 83 dB	Generates higher sound levels
Webcam Resolution	2560 x 1920 vs 1920 x 1080	Higher Resolution Camera
Number of USB-C Ports	3x USB 4.0 vs 2x USB 4.0	Connect more device at the same time

Common Strengths of Lenovo Yoga Book 9i 13 and Asus Zenbook S 13 OLED UX5304

Launch Dates	April 2023 vs March 2023	Both laptops are recent models
Screen Technology	OLED vs OLED	High Screen Quality
HDR Support	Yes, Dolby Vision vs Yes, Dolby Vision	Watch HDR Clips
Fast Charging Support	Yes vs Yes	Charge the battery in a shorter time
USB Power Delivery	Yes vs Yes	Charging via USB port gives flexibility
RAM Type	PCI-E Gen 4.0 (4x) vs PCI-E Gen 4.0 (4x)	Fast RAM type
Upgradable Storage	Yes vs Yes	Option to increase the Storage size
SSD Type	NVMe vs NVMe	Faster Data Transfers
Dolby Atmos Support	Yes vs Yes	3D Surround Sound Support
Wi-Fi Standard	v6E vs v6E	Fast and Reliable Wi-Fi Connections
Bluetooth Standard	v5.2 vs v5.2	Fast and Reliable Bluetooth Connections
Thunderbolt Port	v4 vs v4	Fast data and power transfer via Thunderbolt Port
VGA Output	No vs No	Connect to External Displays via VGA cable

Common Weaknesses of Lenovo Yoga Book 9i 13 and Asus Zenbook S 13 OLED UX5304

Upgradable RAM	No vs No	No Option to increase the RAM size
Fingerprint Sensor	No vs No	No fingerprint login feature

Asus Zenbook S 13 OLED UX5304 vs Lenovo Yoga Book 9i 13": Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the Asus Zenbook S 13 OLED UX5304 and the Lenovo Yoga Book 9i 13".

Physical Specs
Weight	1 kg (2.21 lbs)	1.34 kg (2.95 lbs)
Surface Area	641 cm2 (99.3 inches2)	610 cm2 (94.6 inches2)
Screen to Surface Ratio	~80%	~84.1%
Side Bezel Thickness	~4.8 mm	~6.3 mm
Weight per Inch of Screen	0.08 kg/inch	0.10 kg/inch
	0.176 lbs/inch	0.22 lbs/inch
Colors	Gray, Blue	Blue
Cover Opening Angle	180Â°	360Â°

Comparison of the Asus Zenbook S 13 OLED UX5304 and the Lenovo Yoga Book 9i 13" External Dimensions

Weight

Zenbook S 13 OLED UX5304 weighs 1 kg (2.21 lbs), whereas the Yoga Book 9i 13" weighs 1.34 kg (2.95 lbs). There is a notable difference in weight between these two laptops. The weight difference between the two laptops is not significant.

Weight Comparison

Displays size 13.0-13.9 inches

Asus Zenbook S 13 OLED UX5304

Lenovo Yoga Book 9i 13"

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Thickness Comparison

Displays size 13.0-13.9 inches

Asus Zenbook S 13 OLED UX5304

Lenovo Yoga Book 9i 13"

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Average

Max

Another value that we use for comparing the weights of the laptops is the Weight per Inch of Screen, which is calculated by dividing the total weight of the model with its usable diagonal screen size. This value for the Asus Zenbook S 13 OLED UX5304 is 0.08 kg/inch.In comparison, this value for the Lenovo Yoga Book 9i 13" is 0.10 kg/inch.Here are some of the best performing laptops in this area:

Microsoft Surface Go 4: 0.05 kg/inch
LG Gram SuperSlim 15.6 2023: 0.06 kg/inch
Asus ProArt PZ13 HT5306: 0.06 kg/inch
Asus Zenbook A14 UX3407: 0.06 kg/inch
Microsoft Surface Pro 12: 0.06 kg/inch
Dell Latitude 7330: 0.07 kg/inch
Lenovo ThinkPad X1 Nano Gen 2: 0.07 kg/inch
LG Gram 14 2022: 0.07 kg/inch

Asus Zenbook S 13 OLED UX5304 vs Lenovo Yoga Book 9i 13": Internals (CPU, GPU, RAM, Battery, SSD, etc.) Comparison

CPU Comparison

CPU Model	Intel Core i5 1335U Intel Core i7 1355U	Intel Core i5 1335U Intel Core i7 1355U
Base Frequency	1.3 GHz	1.3 GHz
Turbo Frequency	4.6 GHz	4.6 GHz
Number of Cores	10	10
Number of Threads	12	12
L3 Cache	12 MB	12 MB
Integrated GPU	Intel Iris Xe Graphics (80EU)	Intel Iris Xe Graphics (80EU)
CPU Fabrication Process	10 nm	10 nm
Geekbench 5 (Single)	1706	1706
Geekbench 5 (Multi)	7593	7593
Cinebench 23 (Single)	1726	1726
Cinebench 23 (Multi)	7438	7438

Above you can see the CPU options and the CineBench and GeekBench test scores for both laptops, which gives an idea about what kind of performance difference you may experience between the Asus Zenbook S 13 OLED UX5304 and Lenovo Yoga Book 9i 13".

You may also read reviews of latest laptops with the same CPU ( Intel Core i5 1335U ) and compare them:

GPU Comparison

GPU Model	Intel Iris Xe Graphics G7 (80EU)	Intel Iris Xe Graphics G7 (80EU)
Base Clock Frequency	300 MHz	300 MHz
Boost CLock Frequency	1100 MHz	1100 MHz
TGP (Total Graphics Power)	15 W	15 W
Type	Integrated	Integrated
FLOPS	1,408 GFLOPS	1,408 GFLOPS
Memory Size	System Shared	System Shared
Memory Type	System Shared	System Shared
Memory Bus	System Shared	System Shared
Memory Speed	System Shared	System Shared
Shading Units Cores	640	640
TMUs	40	40
ROPs	20	20

GPU is as critical as the CPU for graphic heavy applications and the table above gives a picture of how the two GPU compares. FLOPS is a measure of a GPU's performance based on the number of floating-point arithmetic calculations that the processor can perform within a second. Asus Zenbook S 13 OLED UX5304 has a FLOPS value of 1.41 TFLOPS whereas the Lenovo Yoga Book 9i 13" ' has a FLOPS value of 1.41 TFLOPS.

RAM Comparison

RAM	16GB 32GB	16GB
Memory Bus	2x8 GB	2x8 GB
RAM Clock	5200 MHz	6400 MHz
RAM Type	LPDDR5	LPDDR5X
Upgradable	No	No
Memory Bus	PCI-E Gen 4.0 (4x)	PCI-E Gen 4.0 (4x)

Both laptops, the Zenbook S 13 OLED UX5304 and the Yoga Book 9i 13", come with similar RAM capacities of 16 GB, providing comparable performance in memory-intensive tasks.

LOCAL LLM Compatibility Evaluation

This quick guide shows what types of large language models (LLMs) each of these laptops could support, based on their respective hardware specifications. It's meant to help you compare their suitability for running AI models locally.

LLM Category	Asus Zenbook S 13 OLED (UX5304)	Lenovo Yoga Book 9i (13")
Small Models(1-3B):Examples: Phi-2, Qwen-1.8B	✔ Run smoothly.	✔ Run smoothly.
Medium Models(7-8B):Examples: Mistral-7B, Qwen-7B	✔ Good performance.	✔ Good performance.
Large Models(13-30B):Examples: Mixtral, Qwen-14B	✖ Not supported.	✖ Not supported.
Extra-Large Models(65B+):Examples: LLaMA2-70B, Qwen1.5-72B	✖ Not supported on most systems. Requires high-end GPU or advanced setup.	✖ Not supported on most systems. Requires high-end GPU or advanced setup.

Note: Optimized (e.g., 4-bit) models may run on limited hardware. Performance depends on runtime and setup.

📌 MoE Models: Some models like Mixtral 8x7B and Qwen3-30B-A3B use a Mixture of Experts (MoE) design, activating only part of the model during inference. This means they can often run efficiently on laptops with 12–16 GB of VRAM when quantized.

BATTERY

BATTERY	63 Wh	80 Wh
Battery Type	Li-Ion	Li-Po
Replaceable	No	No
Fast Charging	No	No
USB Power Delivery	Yes	Yes
Charging Port Position	Left	Left, Right
Charge Power	65 W	65 W

On the other hand, the Yoga Book 9i 13" features a higher battery capacity of 80 Wh, delivering longer usage time compared to the Zenbook S 13 OLED UX5304's 63 Wh.

Battery Comparison

Displays size 13.0-13.9 inches

Asus Zenbook S 13 OLED UX5304

Lenovo Yoga Book 9i 13"

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STORAGE
Both laptops, the Zenbook S 13 OLED UX5304 and the Yoga Book 9i 13" have similar max. storage capacities of 1 TB, allowing for ample space to store files and applications.

Storage Options	512 GB, 1 TB	512 GB, 1 TB
Upgradable	Yes	Yes
Total Slots	1	1
Storage type	SSD (M2)	SSD (M2)
NVMe	Yes	Yes

If your budget allows, we recommend opting for the largest possible disk size, considering the potential increase in storage capacity needs in the future. However, please keep in mind the question 'What will the laptop be used for?' when making this decision. Of course, you can later upgrade the hard disk capacity by getting a larger disk. However, if your laptop has only one disk slot, it may not be as straightforward as a RAM upgrade, where you simply add or replace a module, as moving or cloning files to a new disk may be necessary.

Asus Zenbook S 13 OLED UX5304 vs Lenovo Yoga Book 9i 13": Display Comparison

The display is an essential aspect to consider when comparing the Asus Zenbook S 13 OLED UX5304 and Lenovo Yoga Book 9i 13" since its is the component that you interact the most and significantly impact the experience.

Screen Area and Dimensions

Now let's look at the comparison of the actual display areas of both laptops below, keeping the bezels around the screens out of the equation. Both Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" screens have the same size of 13.3".The total usable screen area of the Zenbook S 13 OLED UX5304 is 513cm² / 80inch² whereas the Yoga Book 9i 13"'s total usable screen area is 513cm² / 80inch².

PPI (Pixels per Inch)
Both Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" feature the same pixel density with 255 pixels per inch (PPI).

Screen PPI (Pixels Per Inch) Comparison

Displays size 13.0-13.9 inches

Asus Zenbook S 13 OLED UX5304

Lenovo Yoga Book 9i 13"

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Refresh Rate
Both Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" offer the same refresh rate of 60 Hz.

Both Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" boast the same response time of 0.2 ms.

Brightness
The Zenbook S 13 OLED UX5304 offers a higher maximum brightness of 550 nits, delivering a brighter screen.

Brightness Comparison

Displays size 13.0-13.9 inches

Asus Zenbook S 13 OLED UX5304

Lenovo Yoga Book 9i 13"

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Average

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Asus Zenbook S 13 OLED UX5304 vs Lenovo Yoga Book 9i 13" Connectivity Comparison

In terms of connectivity,

Wifi
Both laptops offer the same Wi-Fi standard (v6E), ensuring fast and reliable wireless connections.

Below, you'll find a Wi-Fi Versions Table, along with their release dates and speeds, to provide a brief overview of its development.

Wi-Fi Versions and Speeds

Standard	Speed	Release Date	Network	Frequency Bands (GHz)
Wi-Fi 7	up to 40 Gbps (5 GB/s)	2023	802.11be	2.4, 5, 6
Wi-Fi 6E	up to 9.6 Gbps (1.2 GB/s)	2020	802.11ax	2.4, 5, 6
Wi-Fi 6	up to 9.6 Gbps (1.2 GB/s)	2019	802.11ax	2.4, 5
Wi-Fi 5	up to 6.93 Gbps (866.25 MB/s)	2014	802.11ac	2.4, 5
Wi-Fi 4	up to 600 Mbps (75 MB/s)	2009	802.11n	2.4, 5

* Please note that the provided transfer rates are maximum theoretical values, and real-life performance may vary based on environmental factors.

USB
Zenbook S 13 OLED UX5304 is equipped with 1x USB 3.2 USB-A ports. Yoga Book 9i 13" does not have USB-A ports.
Both Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" have USB Type-C ports. Zenbook S 13 OLED UX5304 has 2x USB 4.0 USB Type-C ports, while Yoga Book 9i 13" has 3x USB 4.0 USB Type-C ports.

Below, you'll find a table of USB ports, along with their release dates and speeds.
To mitigate the confusion caused by generation names, the USB Implementers Forum (USB-IF) suggests using marketing names like USB 5Gbps, USB 10Gbps, and so forth, based on their respective transfer rates.

USB Type and Speeds

USB Type	Version	Speed	Date	Other Features/Explanations
USB4	Gen 4 (2.0)	80 Gbps	2022	Also known as USB 80Gbps
USB4	Gen 3×2	40 Gbps	2019	Also known as USB 40Gbps
USB 3.2	3.2 Gen 2x2	20 Gbps	2019	Double the data transfer rates of Gen 2
USB 3.2	3.2 Gen 2	10 Gbps	2017	Previously known as USB 3.1
USB 3.2	3.2 Gen 1	5 Gbps	2017	Previously known as USB 3.0
USB 3.1	3.1 Gen 2	10 Gbps	2013	Faster data transfer rates
USB 3.0	3.1 Gen 1	5 Gbps	2010	SuperSpeed USB, improved data transfer rates
USB 2.0	2.0	480 Mbps	2000	High-speed data transfer
USB 1.0	1.0	1.5 Mbps	1996	Original USB standard

Thunderbolt
Both Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" are equipped with Thunderbolt 4 ports.

HDMI
Zenbook S 13 OLED UX5304 features an HDMI port (1x HDMI 2.1) for connecting to external monitors. Yoga Book 9i 13" does not have an HDMI port.

Below, you'll find a comparison table detailing different HDMI versions, including their bandwidth, color depth, maximum resolution, and release dates. This information can be helpful in understanding the capabilities of each HDMI version and choosing the most suitable one for your needs.

HDMI Comparison Table

HDMI Version	Maximum Resolution	Bandwidth (Gbps)	Color Depth (bits)	Release Date
HDMI 2.1-2.1b	7680 x 4320 *(8K)* @ 60p 3840 x 2160 *(4K)* @ 120p	48.0	48	2017
HDMI 2.0-2.0b	3840 x 2160 *(4K)* @ 60p	18.0	48	2013
HDMI 1.4-1.4b	3840 x 2160 *(4K)* @ 30p	10.2	48	2009
HDMI 1.3-1.3a	2560 x 1440 @ 60p	10.2	48	2006
HDMI 1.0-1.2a	1920 x 1200 @ 60p	4.95	24	2002

* Please note that the provided resolution values represent the maximum supported resolution, and actual display quality may depend on other factors such as source content and connected devices.

SD Card Reader
Neither Zenbook S 13 OLED UX5304 nor Yoga Book 9i 13" has an SD Card Reader.

Audio Jack
Both Zenbook S 13 OLED UX5304 and Yoga Book 9i 13" are equipped with a 3.5mm Audio Jack, providing seamless connection to headphones and speakers.

To summarize the connectivity and ports details, please refer to the table below to see them listed.

Connectivity and Ports
WiFi Standard (latest: v7)	v6E	v6E
Bluetooth (latest: v5.4)	v5.2	v5.2
USB-A (latest: 3.2)	1x USB 3.2	No
USB Type-C (latest: USB4 2.0)	2x USB 4.0	3x USB 4.0
Thunderbolt (latest: 5)	Thunderbolt 4	Thunderbolt 4
HDMI (latest: 2.1)	1x HDMI 2.1	No
Display Port (latest: v2.0)	No	No
VGA	No	No
Fingerprint Sensor	No	No
Optical Drive	No	No
Audio Jack 3.5mm	Yes	Yes
Ethernet RJ45	No	No
SD CardReader	No	No
Proprietary Charging Port	No	No