# HP FX900 512GB -- Budget PCIe 4.0 DRAM-Less NVMe SSD Review (2026)

The HP FX900 512 GB steps up from the 256 GB variant with meaningfully improved write speeds and double the endurance while retaining the DRAM-less InnoGrit IG5220BAA platform.

Quick answer: The 512 GB FX900 is the practical minimum capacity for a budget Gen4 boot-and-gaming drive. Its 4,900/3,300 MB/s speeds are competitive with the Kingston NV2 512 GB and WD Blue SN580 512 GB. The 200 TBW endurance is adequate for light-to-moderate use. The DRAM-less HMB design means it is not ideal for sustained professional workloads, but for gaming, web browsing, and office productivity, it delivers a smooth experience. Choose based on which of the three is cheapest at the time of purchase.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 512 GB |
| Interface | M.2 4.0 x 4 |
| Controller | Innogrit IG5220BAA |
| Memory type | MicronTLC |
| DRAM cache | HMB |
| Sequential read | 4900 MB/s |
| Sequential write | 3300 MB/s |
| Random read IOPS | 820000 |
| Random write IOPS | 645000 |
| Endurance | 200 TBW |
| MTBF | 1500000 |
| Warranty | 5 years |

## Performance

The 512 GB FX900 delivers 4,900/3,300 MB/s sequential reads and writes with up to 820,000/645,000 read/write IOPS. The HMB design handles light-to-moderate sustained writes adequately. Gaming load times are competitive with any PCIe 4.0 drive. Under heavy sustained writes, the drive transitions to native NAND speeds faster than DRAM-equipped alternatives.

## Endurance, TBW & Warranty

HP covers the FX900 512 GB with a five-year warranty limited by 200 TBW, equivalent to roughly 109 GB/day over five years. The 256 GB carries 100 TBW, 1 TB 400 TBW, and 2 TB 800 TBW.

## Pros and Cons

**Pros:**

- 4,900/3,300 MB/s -- competitive budget PCIe 4.0
- DRAM-less HMB design keeps price low
- 200 TBW endurance -- adequate for light use
- Single-sided PCB -- thin-laptop compatible
- 5-year warranty
**Cons:**

- No DRAM -- slower sustained random I/O
- Write speed half the 1TB model
- 512 GB tight for large game libraries
- Not suitable for heavy sustained workloads


## Verdict

The 512 GB FX900 is the practical minimum capacity for a budget Gen4 boot-and-gaming drive. Its 4,900/3,300 MB/s speeds are competitive with the Kingston NV2 512 GB and WD Blue SN580 512 GB. The 200 TBW endurance is adequate for light-to-moderate use. The DRAM-less HMB design means it is not ideal for sustained professional workloads, but for gaming, web browsing, and office productivity, it delivers a smooth experience. Choose based on which of the three is cheapest at the time of purchase.

## Frequently Asked Questions

### Is the 512GB FX900 good for gaming?

Yes — 4,900 MB/s reads provide fast game loading. The 512 GB capacity holds several modern titles. For larger libraries, the 1 TB model offers more room.

### What is the TBW of the 512GB FX900?

Rated for 200 TBW over five years, equivalent to roughly 109 GB/day. At typical gaming write rates of 10-20 GB/day this lasts 27-55 years.

### Does it have DRAM?

No — the FX900 uses a DRAM-less HMB (Host Memory Buffer) design. This keeps costs down but reduces sustained random I/O performance compared to DRAM-equipped drives.

### How does it compare to the Kingston NV2 512GB?

Both are DRAM-less budget PCIe 4.0 drives. The NV2 rates at 3,500/2,500 MB/s. The FX900 leads on both reads (4,900 vs 3,500) and writes (3,300 vs 2,500). At similar pricing, the FX900 is the stronger performer.

### Can I use it for PS5?

The 4,900 MB/s reads fall below Sony's 5,500 MB/s minimum recommendation. It will physically fit and work, but load times may be slightly slower than recommended drives. Not recommended for PS5.

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Last updated: 2026-05-23. Source: https://ssdrive.net/hp-fx-900-512-gb