Ssd adata ultimate su630 240gb review

ADATA has introduced its new entry-level SSD for client PCs. The Ultimate SU630 is the first drive from an independent maker of SSDs based on 3D QLC NAND, which is an indicator that the new type of flash memory is finally to the point in terms of production and reliability that companies like ADATA can offer it to their customers, albeit with only a two-year warranty. Notably, the drive is also among the first SATA-based QLC SSDs.

Aimed at entry-level PCs, ADATA’s Ultimate SU630 drives come in a 2.5-inch form-factor and feature 240 GB, 480 GB, and 960 GB configurations. The company says that the Ultimate SU630 SSDs support sequential read performance up to 520 MB/s as well as sequential write performance up to 450 MB/s when pseudo-SLC caching is enabled, based on numbers obtained using the ATTO benchmark. Interestingly, the 240 GB version is not slower than higher-capacity models. As for random performance numbers, the Ultimate SU630 is capable of up to 40,000 read and up to 65,000 write IOPS in case of the 480 GB and 960 GB SKUs.

Moving on to the endurance of the ADATA Ultimate SU630 drives, the 240 GB version is rated for 50 TBW (TB Written), whereas the higher-capacity 480 GB and 960 GB models are rated for 100 and 200 TBW, respectively. To put this in perspective, these endurance ratings are one-third those of ADATA’s entry-level 3D TLC NAND-based drives. This is not exactly surprising considering the peculiarities of QLC NAND memory in general. In fact, Crucial P1 SSDs are rated even lower, though the company a five-year warranty on its QLC drives. Meanwhile, ADATA ships its QLC-based drives with just a two-year warranty, which happens to be the minimum allowable warranty in Europe.

ADATA Ultimate SU630 Specifications Capacity 240 GB 480 GB 960 GB Model Number ASU630SS-240GQ-R ASU630SS-480GQ-R ASU630SS-960GQ-R Controller Maxio Technology MAS0902A-B2C NAND Flash 64-layer 3D QLC NAND Form-Factor, Interface 2.5-inch/7-mm, SATA 6 Gbps Sequential Read 520 MB/s Sequential Write 450 MB/s Random Read IOPS 30K 40K Random Write IOPS 65K Pseudo-SLC Caching Supported DRAM Buffer No AES Encryption unknown Power Management unknown Warranty 2 years MTBF 1,500,000 hours TBW 50 TB 100 TB 200 TB DWPD 0.28 0.28 0.28 MSRP $49.99 $79.99 $139.99

ADATA does not disclose the controller it uses for the Ultimate SU630 SSDs, nor the supplier of 3D QLC memory being used. Keeping in mind how close the company works with Micron and Intel, it is more than likely ADATA is buying their QLC NAND made by one of these companies. As for the controller, so far we have only seen two SATA SSD controllers that are officially capable of handling QLC: Maxio Technology’s MAS0902A-B2C and Phison’s PS3111-S11T. Since Phison usually delivers turn-key SSD solutions with its controllers (i.e., fully assembled drives), ADATA has not been working with this company, which leaves Maxio as the most likely provider of QLC-supporting SATA SSD controller for ADATA.

UPDATE 11/23: ADATA has confirmed Intel’s QLC NAND and Maxio Technology’s MAS0902A controller.

Overall this is exactly the kind of drive we’ve come to expect from ADATA. The company has shown that it’s not afraid of experimenting with new SSD controllers and NAND memory, and as a result they have dozens of products aimed at a variety of market segments, including niche ones. ADATA was the first independent maker of SSDs to offer drives based on 3D NAND several years ago. With its Ultimate SU630 the company comes up with multiple firsts: it is the first 3D QLC-based SSD from a well-known independent manufacturer, it is the first 3D QLC-based drive with a SATA interface, it is the first QLC SSD (likely) powered by Maxio’s MAS0902A controller from a popular brand. Meanwhile, ADATA makes no secret that the Ultimate SU630 is positioned as its cheapest SATA SSD: the drive formally sits below the Ultimate SU650/SU655, SU700, SU800, SU900, and XPG SX950U products, some of which are three years old.

Time to talk about pricing of the Ultimate SU630. ADATA plans to sell the 240 GB model for $49.99, the 480 GB model for $79.99, and the 960 GB version for $139.99. Keeping in mind that street prices are usually below MSRPs, recommended prices of the new drives look competitive against other cheap SSDs. In the meantime, when acquiring such products one should keep in mind that their endurance is below that of many other inexpensive drives available today.

Related Reading:

Source: ADATA

Why you can trust Tom’s Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test .

Features and Specifications

Going by Adata’s latest mainstream SATA SSD’s name, Ultimate SU750, it may sound like you’ve found the ultimate SSD, and, if we were reviewing it back in 2010, it just may have been. Unfortunately, in the world of SSDs today, it is rather unimpressive. SATA SSDs are no longer the speedy, fun devices they used to be in light of the latest NVMe offerings. Although, that’s not to say it is not worth looking into if you are in search of something cheap when it goes on sale.

Adata Ultimate SU750 SATA SSD (

(Image credit: Tom’s Hardware))

Like Adata’s other entry-level NVMe SSD, the XPG SX6000 Pro, the Ultimate SU750 features a Realtek SSD controller and Micron NAND flash. Specifically, it is powered by the Realtek RTS5733DMQ controller. And contrary to what Adata says on the device’s web page (as of publication time), this controller is a DRAMless, two-channel controller. To the non-tech savvy, this may not mean much, but these two factors have performance-limiting implications, which negatively impact the real-world user experience.

More complex, but more consistent SSDs feature a DRAM cache, but unlike those, Adata’S Ultimate SU750 lacks a DRAM package. The DRAM is usually used for accelerating flash translation layer access and improves device performance dramatically in some cases. This means that, without it, operations such as write-heavy mapping, garbage collection, wear leveling, and flash management will encounter significantly higher latency which in turn can impact the time of response to your system’s requests. Implementing a DRAMless controller is one way manufacturers can significantly reduce bill of materials (BOM) costs, but SSDs like this are usually much slower and latent under write-heavy, mixed workloads; especially under sustained writing. 

The other half of the SU750’s potential problem is that there are only two NAND channels for bandwidth to handle all those FTL processes and move data around while juggling in host requests. Which means under heavy workloads, things can get a bit congested. This is half the channels that other mainstream SATA SSD controllers have. Just as DRAM can help improve the performance in an SSD, more NAND channels enable faster performance as well. With more channels, there is more opportunity for striping, interleaving, and pipelining optimization. However, these come at the cost of increased power consumption and die size and thus affects production cost, which is why the SU750 features just two.


Swipe to scroll horizontally

ProductUltimate SU750 256GBUltimate SU750 512GBUltimate SU750 1TBPricing$45.99$64.99$119.99Capacity (User / Raw)256GB / 256GB512GB / 512GB1024GB / 1024GBForm Factor2.5″ 7mm2.5″ 7mm2.5″ 7mmInterface / ProtocolSATA 6.0 Gb/sSATA 6.0 Gb/sSATA 6.0 Gb/sControllerRealtek RTS5733DMQRealtek RTS5733DMQRealtek RTS5733DMQDRAMNoneNoneNoneNAND FlashMicron 64L TLCMicron 64L TLCMicron 64L TLCSequential Read550 MB/s550 MB/s550 MB/sSequential Write520 MB/s520 MB/s520 MB/sRandom Read65,000 IOPS65,000 IOPS65,000 IOPSRandom Write75,000 IOPS75,000 IOPS75,000 IOPSEncryptionN/AN/AN/AEndurance200 TBW400 TBW800 TBWPart NumberASU750SS-256GT-CASU750SS-512GT-CASU750SS-1TT-CWarranty3-Years3-Years3-Years

Even with just two NAND channels though, the Ultimate SU750 can still sequential speeds of up to 550/520MB/s read/write and is capable of delivering 4K random performance of up to 65,000 /75,000 IOPS read/write. Capacities are available from 256GB up to 1TB and what stands out quite a bit is its durability. The SU750’s endurance figures are twice the competition’s per capacity thanks to its LDPC ECC. Incredibly, the 1TB model we are reviewing today is rated to endure up to 800TB of writes before the 3-years warranty voids.

Software and Accessories

Adata provides both an SSD Toolbox and an Acronis True Image OEM software download from the company’s website. With the toolbox, one can monitor the SSD, run diagnostics, update the firmware if available, and optimize the system. Acronis True Image OEM, on the other hand, is a simple to use software for cloning your existing data over to your new SSD. You can also use it for making system images for backup and restoration purposes.

A Closer Look

Adata SU750 is a 2.5” 7mm form factor SATA 6Gb/s SSD that features a plastic and metal finish. Overall, it feels cheap and flimsy, unlike the Crucial MX500 or Team Group Vulcan that have sturdy a metal finish all around. And, while the 2.5” form factor is rather large in comparison to an M.2 SSD these days, the SU750’s PCB within the casing is actually quite small.

In all, there are four Adata branded packages on it, but within are Micron’s second-generation 64L TLC NAND flash. And, directly next to the SATA data connector is the Realtek controller powering it. The controller is closest to the SATA data connector for the least noise/interference. 


MORE: How We Test HDDs And SSDs

MORE: All SSD Content

Written by Jane