Home / PC H/W Reviews / Core PC Components / PC Storage and RAM Kit Reviews / Kingston SSDNow UV400 480GB SSD Review
Kingston UV400 14

Kingston SSDNow UV400 480GB SSD Review

  1. Introduction, Specs and Closer Look
  2. Test Setup and Methodology
  3. Anvil Benchmarks
  4. AS SSD Benchmark
  5. ATTO Benchmark
  6. CrystalDisk Mark Benchmark
  7. Futuremark Benchmarks
  8. IO Testing
  9. Access Test
  10. Conclusion
  11. Online Purchase Links
  12. View All

Disclosure: This review unit is provided by Kingston

Introduction, Specifications and Closer Look

With a silver casing and its trademark logo on the front, Kingston SSDNow UV400 seems to be an updated variant of the previous version, the SSDNow UV300. It assures the baseline performance (using ATTO) of up to 550MB/s read and 490MB/s write, backed with a three-year warranty support. The Kingston SSDNow UV300 that I reviewed earlier used a Phison controller. That unit’s availability was very limited with countries like India. The SSD did attract some interest because it was a cost-effective solution to get a larger SSD or an entry-level for general purposes. Kingston wasn’t the first to target the entry-level market.

The UV400 has four storage variants, 120GB, 240GB, 480GB and the 960GB. As the title suggests, this is a 480gig variant.

This SSD does not have a spacer for notebooks with 9.5 mm HDD cages. Strange! Notebook users benefit from a faster storage over the pre-installed HDD that’s typically 5,400 RPM at the time of purchase. It’s a bare minimum. Desktop users and notebook or ultrabook users with 7mm z-axis HDD bays wouldn’t mind.

Kingston places SSDNow as low-cost drives, while HyperX is for the mid-to-high end.

The complete specifications are as follows:

Form factor: 2.5″

Interface: SATA Rev. 3.0 (6Gb/s) – with backwards compatibility to SATA Rev. 2.0 (3Gb/s)

Capacities: 120GB, 240GB, 480GB, 960GB

Controller: Marvell 88SS1074


Baseline Performance:

Data Transfer (ATTO):

  • 120GB — up to 550MB/s Read and 350MB/s Write
  • 240GB — up to 550MB/s Read and 490MB/s Write
  • 480GB — up to 550MB/s Read and 500MB/s Write
  • 960GB — up to 540MB/s Read and 500MB/s Write

Maximum Random 4k Read/Write (IOMETER):

  • 120GB — up to 90,000 IOPS and 15,000 IOPS
  • 240GB — up to 90,000 IOPS and 25,000 IOPS
  • 480GB — up to 90,000 IOPS and 35,000 IOPS
  • 960GB — up to 90,000 IOPS and 50,000 IOPS

Power Consumption: 0.672W Idle / 0.693W Avg / 0.59W (MAX) Read / 2.515W (MAX) Write

Storage temperature: -40°C~85°C

Operating temperature: 0°C~70°C

Dimensions: 100.0mm x 69.9mm x 7.0mm

Weight: 57g

Vibration operating: 2.17G Peak (7–800Hz)

Vibration non-operating: 20G Peak (10–2000Hz)

Life expectancy: 1 million hours MTBF

Warranty/support: Limited 3-year warranty with free technical support

Total Bytes Written (TBW):

  • 120GB: 50TB
  • 240GB: 100TB
  • 480GB: 200TB
  • 960GB: 400TB

The casing is metal. There’s a small thermal pad for the controller and the cache. Kingston uses Marvell 88SS1074 four-channel controller and 15nm Toshiba TLC flash chips. The cache this PCB uses is a 70mm Nanya NT5CC256M16CP 4Gb DDR3L chip.  Kingston SSDNow UV300 uses Phison S10 controller and Toshiba A19 TLC.

Kingston SSDNow is tested with 0C3FD6SD firmware which was the latest one available at the time of writing. The drive gives you a formatted space of 447 GB

Note the cost of per GB depending on the country you purchase it from:

Kingston does not sell its 960GB variant anywhere, despite mentioning it in their product website. These drives are cheaper in India compared to the US and the UK even looking at per dollar conversion at the time of writing.

Test Setup and Methodology

The system that I am using is to test most of the hardware. The same operating system, choice of USB 3.0 port (specific rear I/O port) version of benchmark software and the testing method is maintained throughout the graph.

Operating System Windows 10 64-bit Pro
Processor+ Cooler Intel i7 4790k + Noctua NH-U12S
Motherboard Gigabyte Z97X-Gaming GT
RAM 8GB Kingston DDR3 HyperX
Primary Storage 240GB SanDisk Extreme II SSD
Secondary Storage 3TB WD Red WD30EFRX
Power Supply Corsair TX750
PC Case Lian Li A70F

The testing methods are as follows:

Anvil Benchmark

  • Access Test
  • Transfer Rate Test

AS SSD Benchmark

  • IOPS Test- Sequential- 16MB, 4K and 4K-64 Thrd
  • MB/s Test- Sequential, 4K and 4K-64 Thrd

ATTO Benchmark- Read and Write

CrystalDiskMark Benchmark

  • 1 GiB- Read and Write
  • 32 GiB- Read and Write

Futuremark Benchmarks

  • PCMark 7 Benchmark
  • PCMark 8 Benchmark

IOPS Testing

  • 4K and 256K Read and Time- Total IOPS
  • 4K and 256K Read and Time- Average IO Response Time

SSD Access Test

  • Read: Min./Max./Average
  • Write: Min. Max./Average

Drive Format: NTFS

Anvil Benchmarks

Access Test

Using the 1GB incompressible test file, UV400’s 4K read access speed is in the same rank as that with SanDisk Extreme Pro and un-noticeably quicker than the V300. But these are half the storage space compared to this SSD. It’s not bad if you take its sequential and 4k aligned write speed as well.

Transfer Rate Test

Anvil write shows major improvement with sequential over its predecessor UV300. 4k aligned is pretty good as well. Zotac Premium SSD rules in this graph table for now.

AS SSD Benchmark


Transfer Test

ATTO Benchmark

The best part about the UV400 is between 8MB and 64MB file size, the read performance is consistent pretty much hitting SATA III’s 600 MB/s wall. 4K write performance with the UV400 is much better than the UV300.

CrystalDisk Mark Benchmark

1GiB Test

32GiB Test

Sequential and 4K looks pretty decent for the drive of this class.

Futuremark Benchmarks

PCMark 7 Storage Benchmark

Kingston UV400 PCM7

PCMark 8 Benchmark

Kingston UV400 pcm8

IO Testing

Total IOPS

Average IO Response Time (ms)

Average Read/Write Access Test


On most counts, Kingston SSDNow UV400 is a good drive for its cost. This entry-level will attract a lot of people moving out of 5,400 RPM/7200 RPM mechanical drive, mostly general purpose PCS and notebooks. It is just strange that Kingston doesn’t provide the space with this pack. Kingston UV400 does have a desktop upgrade kit which has a spacer too. All they have to do is fight the price war with other makes for the entry-level as well.

Since Kingston does not make its own chips and controls, therefore relying on NAND and controller makers where some of them have their own products, it needs to be competitive and easily available.

This is also a good drive if you want to have your own USB 3.0/3.1 drive due to its sequential read and write performance. Just get a casing and enjoy the space it provides.  But come on! No spacer? Really? Your potential entry-level customers are going to give you a dirty look when they find out other entry-level SSDs do provide the spacer. A Lenovo Y50 notebook’s HDD caddy is 9.5mm z-axis, as an example.

Those with heavy write intensive tasks should look at the better options available for a higher price and a backing of a 5-year warranty. Regular SSD users will just say meh, but on the bright side, they wouldn’t argue about it after seeing the price tag for a 240gig drive. No surprises here. Keeping all this mind, I have no hesitation to give it a bronze award to acknowledge the value this drive provides for the general crowd.

kingston ssdnow uv400 480GB

These are affiliate links where we get a small referral fee if something is purchased from the links above. While this doesn’t add any extra cost from non-affiliated links, it helps us to gain funds to pay the bills for hosting and get required resources for testing. If our reviews helped you, buying from our affiliate links helps a lot!


United States

United Kingdom

Leave a Reply

Your email address will not be published. Required fields are marked *