Comparing: OPPO A15s eMMC 5.1 vs Lexar High Performance 633X 64GB

Specification Comparison Table

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Submission Comparison Table

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About Hardware OPPO A15s eMMC 5.1

OPPO A15s eMMC 5.1 is the eMMC (embedded MultiMediaCard) version 5.1-based internal storage chip used in the OPPO A15s smartphone. The eMMC 5.1 technology is a significant upgrade from the previous generation, delivering faster read/write speeds, better power efficiency, and improved performance in data input/output management. While not as fast as the more modern UFS (Universal Flash Storage) technology, eMMC 5.1 remains a reliable storage standard for entry-level to mid-range smartphones.

This storage is designed to provide a seamless user experience, from opening apps, saving files, recording videos, to managing Android system data. It also plays an important role in operating system stability, lightweight multitasking, and response time when the device starts up or switches between apps.

The tests were conducted on an OPPO A15s device with MediaTek Helio P35 (MT6765) specifications, 4GB RAM, and 64GB internal storage, running on Android 10 operating system with ColorOS 7.2 interface. The test was conducted when the device had been in use for approximately two years, so the performance results may be slightly affected by NAND Flash performance degradation over time (wear leveling).

In a benchmark using the Cross Platform Disk Test (Mobile), the eMMC 5.1 on the OPPO A15s recorded a read speed of 145.27 MB/s and a write speed of 50.09 MB/s. This indicates that the storage performance is still solid enough for daily needs such as opening social media, streaming videos, accessing galleries, and saving files from third-party applications.

Overall, the eMMC 5.1 on the OPPO A15s is a well-balanced internal storage solution between price, efficiency, and performance, perfect for users who need a smartphone with responsive capabilities while remaining power efficient. For casual users, this performance is more than enough to run most popular Android apps without a hitch.

Device test (testbed):

Device: OPPO A15s
CPU: MediaTek MT6765 Helio P35
RAM: 4GB
Storage: 64GB
OS: Android 10, ColorOS 7.2

* This hardware test was conducted after the device was approximately 2 years old, there may be some performance degradation.

Tuesday, 06 April 2021 13:51:49 | Update: 1 month ago

About Hardware Lexar High Performance 633X 64GB

The Lexar High-Performance 633x 64GB microSDXC is a high-grade memory card designed to provide fast data transfer speeds and reliable performance, especially for users who frequently handle large multimedia files. With UHS-I U1/U3 and V30 class speeds, as well as a 633x rating, the card offers read speeds of up to 100MB/s which is ideal for Full HD to 4K UHD video recording, high-resolution photography, and heavy application usage on Android devices.

The microSD card also has an A1 rating for app performance, which enables faster app loading times and more responsive multitasking on mobile devices. Compatibility is broad, supporting various types of devices such as smartphones, action cams, drones, tablets, and other recording devices. For more flexible use, Lexar also includes an SD adapter in the sales package so that the card can be used easily with DSLR cameras or laptops that have full SD slots.

Another advantage lies in physical durability. The Lexar 633x is designed to waterproof, extreme temperature resistant, shockproof, and X-ray resistant standards, making it a great choice for outdoor use or rugged field conditions. This card is perfect for content creators, travelers, and gamers who need large-capacity yet reliable storage.

Testing was conducted using a Lenovo IdeaPad Slim 3i 14ITL6 device with Intel Core i5-1135G7 processor, NVIDIA MX350, 12GB DDR4 3200MHz RAM, and Windows 11 Home 23H2 operating system. Testing also utilized a Lexar RW450 (rev B) card reader with GL3231S controller, using factory default conditions (exFAT file system, Quick Removal). In the CrystalDiskMark benchmark, the card recorded a read speed of 87.70 MB/s and write speed of 58.83 MB/s, confirming its performance claim as one of the fastest microSDs in its class.

Overall, the Lexar High-Performance 633x 64GB offers a combination of high speed, physical durability, and sufficient capacity to meet the storage needs of multimedia, gaming, and heavy applications on modern mobile devices. If you are looking for a microSDXC card with stable performance and ready to be used in various conditions, the Lexar 633x 64GB is a highly recommended choice.

Device Test (Testbed):

Device: Lenovo IdeaPad Slim 3i 14ITL6
Device Specs: i5-1135G7, NVIDIA MX350, 12GB RAM 3200MHz (4+8), 512GB NVMe SSD, USB 3.1 Gen 1, Windows 11 Home 23H2
Card Reader: Lexar RW450 rev B (GL3231S Controller)
Room Temperature: 30 celcius based on DHT11 Sensors

* This experiment is run when the item is newly purchased, no files condition (0% usage), exFAT file system (default), Device Manager Policy: Quick Removal (Default).

Friday, 12 January 2024 02:42:40 | Update: 1 month ago