Test Bench
For our tests, we used our Test Rig which consists of an ASRock Z790 Taichi Lite motherboard, along with an Intel Core i9-13900K, a ASRock Radeon RX 7900 XTX graphics card, and 32GB Patriot Viper Xtreme 5 DDR5-7600 memory kit.
* ALL tests are conducted at specified default speeds and settings.
| CPU | Intel Core i9-13900K |
| Cooling | Cooler Master MasterLiquid PL240 FLUX AIO cooler |
| Motherboard | ASRock Z790 Taichi Lite |
| Ram | Patriot Viper Xtreme 5 DDR5-7600 32GB Memory Kit |
| XMP 3.0 profiles | Yes |
| SSD | Lexar NM800Pro PCIE Gen4
Lexar NM790 PCIE Gen4 |
| PSU | Gigabyte UD850 Gold 850W |
| VGA card | ASRock Radeon RX 7900 XTX |
| OS |
Windows 11 |
AIDA64 Disk Information
As you can see from AIDA64 disk information, the Lexar NM790 supports NVMe 1.4, PCIE 4.0 Gen4x4. It shows a total formatted capacity of 1,907GB, which is about right for a 2TB drive when you take it in to consideration.
It doesn’t show the name of the SSD controller, but we know it uses the MAP1602A from Maxiotech, which is one of the new generation of DRAM-Less SSD controllers.
CrystalDiskMark
CrystalDiskMark is a disk benchmark software.It measure sequential reads/writes speed,measure random 512KB, 4KB, 4KB (Queue Depth=32) reads/writes speed, select test data (Random, 0Fill, 1Fill), provide theme support and Multi-Language support.
During our CrystalDiskMark 4GB test we managed to get a Read speed of 7,121 MB/sec with Write speeds of 4,669 MB/sec. For the 32GB test, we got a fast read sepeed of 7,087 MB/sec and write speed of 6,151 MB/Sec. It’s close enough to the advertised speeds, so I’m happy with it.
ATTO Disk Benchmark
ATTO has created a widely-accepted Disk Benchmark freeware software to help measure storage system performance. As one of the top tools utilized in the industry, Disk Benchmark identifies performance in hard drives, solid state drives, RAID arrays as well as the host connection to attached storage.
Anvil Storage
Anvil’s Storage Utilities is a powerful tool that was designed in order to provide you with a simple means of assessing the read and writer performance of your Solid State Drive or Hard Disk Drive.
In our Anvil tests, we managed to get a 4K QTD16 Read IOPS score of 282,255.78. While 4K QTD16 write IOPS score was at 464,543.83, which is pretty decent.
Load Temps
Full load temperatures reached a high 59 degree Celsius, which is higher than I expected, but nothing to be concerned about. I would highly recommend using the motherboards included heatsinks for M.2 SSDs.
PCMark 10 – Full System Drive Benchmark
The Full System Drive benchmark uses a wide-ranging set of real-world traces from popular applications and common tasks to fully test the performance of the fastest modern drives.
This benchmark writes 204 GB of data to the drive over the duration of the test. This data is deleted when the test ends.
To run this test, you need a minimum of 80 GB of free space on the drive, 8 GB of RAM, and a quad-core CPU.
PassMark 9
Fast, easy to use, PC speed testing and benchmarking. PassMark PerformanceTest allows you to objectively benchmark a PC using a variety of different speed tests and compare the results to other computers.
