HP FX900 Pro 2TB PCIe Gen4 NVMe SSD Review

HP FX900 Professional 2TB
Today we take a look at the HP FX900 Pro 2TB NVMe SSD. We previously reviewed the drive's PCIe Gen 3 predecessors in the HP EX900 and EX900 Plus , both of which were decent drives for their time. However, the FX900 Pro is aimed squarely at the current high-end PCIe Gen 4 SSD market with ratings to match, so I have high expectations for this drive. Keep testing!

HP FX900 Pro 2TB NVMe Solid State Drive

The HP FX900 Pro 2TB features a double-sided M.2 2280 (80mm) form factor.

HP FX900 Pro 2TB Front
The HP FX900 Pro bundles 176-layer TLC NAND with an InnoGrit IG5236 controller. We've reviewed another drive, the XPG GAMMIX S70 , with this controller in the past . Combined with this is DDR4 DRAM cache.

HP FX900 Pro 2TB Back

The back of the drive is home to the remaining two NAND packages and a DRAM module.Eagle-eyed users may notice something interesting about the sticker on the front of this drive; that's because it's more than just a sticker.

HP FX900 Pro 2TB Side
Instead of bundling the heatsink, HP bundles what they call a "graphene thermal pad," which they claim reduces the temperature by "about 18" degrees Celsius. Obviously we will investigate this!

HP FX900 Pro SSD Specifications
The HP FX900 Pro Series SSDs are available in capacities between 512GB and 4TB.

HP FX900 Pro 2TB Specifications
Today we are looking at the 2TB model, which is rated at 7400 MB/s sequential read and 6700 MB/s sequential write. Those numbers will be impressive if the FX900 Pro manages to hit them and will put this drive in contention for the top of my benchmark charts. Endurance numbers for the 1TB drive is 600TBW and this 2TB model is 1200TBW; these ratings are plenty sufficient for almost all use cases but are in no way a standout feature as other drives like the Seagate FireCuda 530 have double the rated endurance of this model. Warranty support lasts 5 years, which is the industry standard on premium quality SSDs.

One thing to keep in mind when reading the benchmark results later is that our review model was a 2TB drive, and most drives I reviewed on STH were at the 1TB capacity point. Generally speaking, this will give the drive an edge in many of my benchmarking pools, so keep that in mind.

HP FX900 Pro 2TB CrystalDiskInfo

CrystalDiskInfo can give us some basic information about the SSD and confirm that we are running at PCIe 4.0 x4 speed using NVMe 1.4.

Test system configuration

We use the following configuration for this test:

Motherboard : ASUS PRIME X570-P

CPU : AMD Ryzen 9 5900X (12C/24T)

Memory : 2x 16GB DDR4-3200 UDIMMs

Our tests used the HP FX900 Pro 2TB as the system's boot drive, installed in the motherboard's M.2_1 slot. The drive is filled with data to 85% capacity, and some is removed, leaving about 60% of the used space on the volume.

Next, we'll move into performance testing.

HP FX900 Pro 2TB performance test

We use the default smaller test size and larger test set for testing in our benchmarks. This allows us to see the difference between lighter and heavier workloads.

CrystalDiskMark x64

CrystalDiskMark is used as a basic starting point for benchmarking, as it is typically run by end users as a sanity check.

HP FX900 Pro 2TB CrystalDiskMark 1GB

HP FX900 Pro 2TB CrystalDiskMark 1GB Chart
The FX900 Pro is close enough to its rated performance numbers that I give it a thumbs up here. Other than that, it tops our performance charts, tied for sequential reads and an overall win for writes. Keep in mind that this is a 2TB drive that competes primarily with 1TB drives, with the exception of the Sabrent Rocket 4 Plus and Rocket Q4; this size difference gives the FX900 Pro a performance advantage over 1TB drives.

HP FX900 Pro 2TB CrystalDiskMark 8GB

HP FX900 Pro 2TB CrystalDiskMark 8GB Chart
Things were fine on the larger CrystalDiskMark test; the FX900 Pro barely ceded, again topping my charts.

ATTO Disk Benchmark

The ATTO disk benchmark has been a staple of drive sequential performance testing for many years. ATTO was tested at 256MB and 8GB file sizes.
HP FX900 Pro 2TB ATTO 256MB
HP FX900 Pro 2TB ATTO 256MB Chart

Similar to CrystalDiskMark, the ATTO results put the FX900 Pro at the top of my chart. The Sabrent Rocket 4 Plus is closer here , almost tied with the FX900 Pro.


HP FX900 Pro 2TB ATTO 8GB Chart
In the larger ATTO test, the FX900 Pro managed to outperform everything else and top our charts. Having said that, it's a close game, with the Rocket 4 Plus coming right behind the FX900 Pro.

Anvil's Storage Tool

Anvil's Storage Utilities is a comprehensive benchmark that gives us a very deep insight into the performance of our test drives. The benchmark was run with test sizes of 1GB and 8GB.

HP FX900 Pro 2TB Anvil 1GB
HP FX900 Pro 2TB Anvil 1GB Chart
The Anvil's performance is interesting on the FX900 Pro, especially compared to the XPG Gammix S70. The drives share a single controller, and despite their differing capacities and NAND, the S70 and FX900 Pro performed very closely in pure sequential testing. In Anvil, where the random traffic pattern test is included in the score, the FX900 Pro manages to differentiate itself from the S70. Relative to the rest, the FX900 Pro performed well, almost topping the list in reading and writing scores.

HP FX900 Pro 2TB Anvil 8GB

HP FX900 Pro 2TB Anvil 8GB Chart

The FX900 Pro fumbled a bit on the larger Anvil test, at least in terms of read performance. Write scores are still very high, but read scores put this drive down a few nails on the charts.

AS SSD Benchmark

AS SSD Benchmark is another good benchmark for testing SSDs. We ran all three tests for our series. Like other utilities, it runs with the default 1GB and larger 10GB test sets.

HP FX900 Pro 2TB Solid State Drive 1GB

HP FX900 Pro 2TB ASSSD 1GB Chart

The HP FX900 Pro returns as an AS SSD, topping the list for read scores and a solid write score. This is a test where the S70 underperformed, so it's interesting to see the FX900 Pro perform well here.

HP FX900 Pro 2TB Solid State Drive 10GB

HP FX900 Pro 2TB ASSSD 10GB Chart

Similar to what happened to the SK hynix Platinum P41, performance in the larger AS SSD test slips a tiny amount and allows the SN850 to squeak out a read score win. The write score is still stronger on the FX900 Pro than either of those drives, though the FireCuda 530 is still the reigning champion in the write department.

SPECworkstation, thermals, and our conclusion are up next.

SPECworkstation 3.0.2 Storage Benchmark

The SPECworkstation benchmark is an excellent benchmark for testing systems with workstation-type workloads. In this test, we only ran the storage component, which is 15 separate tests.

HP FX900 Pro 2TB Specifications

HP FX900 Pro 2TB Spec Sheet
In my recent SK hynix Platinum P41 review, I basically thought this drive was the king of SPECworkstation. Well, that reign didn't last long. While the P41 manages to maintain the highest Product Development score, and is thus listed at the top of our chart, the FX900 Pro nearly ties it with Product Development and then beats it in every other test. If SPEC performance is your concern, the FX900 Pro is king.

Sustained write performance

This isn't necessarily a benchmark, but an attempt to capture the drive's post-cache write speed. When I filled the data to the 85% mark using 10 simultaneous write threads, I monitored the drive for write performance to drop to the lowest stable point and took screenshots.
HP FX900 Pro 2TB Rear Cache Write Speed
HP FX900 Pro 2TB Rear Cache Write Speed ​​Chart
The post-cache write speed of the HP FX900 Pro is around 1.2 GB/s, almost on par with the WD SN850.


We used HWMonitor to monitor idle and maximum temperatures during testing to understand the thermal performance and requirements of the drive. Keep in mind that our test bench was an open chassis in room 22C, but no direct airflow. So this doesn't represent a cramped low airflow situation, but is designed to "self" simulate the temperature of the drive.

HP FX900 Pro 2TB temperature chart

The FX900 Pro has that weird "graphene thermal pad" and even after testing I'm not sure if it helps or hurts. When using the mat, the FX900 Pro was idle at 50C, but under load it topped out at around 82C. After the pads are turned off, the idle temperature drops to the mid-30s, but the load temperature rises faster and faster. On the plus side, this pad is easy to remove, and you can attach a motherboard or an aftermarket cooler if needed. Under light loads, I believe the FX900 Pro is fine with just the pads, but under heavier usage it needs some kind of active cooling or a real heatsink to keep the temperature down.
 HP FX900 Pro 2TB Box
The HP FX900 Pro 2TB is great! While I'm still a bit confused about the thermal pad and think it's a bit silly, it doesn't seem to harm the drive in any way. The drive is cheaper than many (but not all) other top contenders in the 2TB drive space, and still performs very well in all of my tests. If you need a high-end 2TB SSD, the HP FX900 Pro 2TB is an option worth considering.

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