There are several reasons that we are excited about Toshiba's XG5. First and foremost is the arrival of Toshiba's much anticipated BiCS 3D NAND flash. The XG5 represents the first mass produced storage product to feature BiCS flash. Even though the XG5 is the first product to hit sales channels armed with BiCs flash, BiCS is actually in its third generation of development and is currently hitting retail channels as a well refined 64-layer product called BiCS 3.
The XG5 also represents the first TLC based NVMe SSD that can go toe to toe with Samsung's TLC based NVMe SSDs. The only thing that holds us back from declaring the XG5 the best performing client TLC SSD ever made is the way it has been programmed to cache the OS. We feel that benchmarks with the OS on the drive would have to be class-leading for us to declare it the fastest TLC SSD ever. For now, the 1TB Samsung 960 EVO will remain our top performing TLC-based OS Disk.
However, as shown by our secondary storage device benchmarks, where the drives SLC cache is in play, the XG5 is a much better performer than even the 960 EVO where it matters most – moderate workload performance. What we can say is that when running as a secondary storage device, the XG5 is easily the best performing client TLC SSD ever made – we have the benchmarks to prove it.
At the end of the day, we at TweakTown are enthusiast's first and foremost. Toshiba's XG5 is not an enthusiast SSD; it is an OEM SSD. However, based on history with the XG3/RD400, we can get a very good idea of what to expect from an enthusiast version of the XG5 that is coming soon via OCZ. Unofficially, we have been told that the enthusiast version of the XG5 will not employ OS caching and will, of course, have a dedicated NVMe driver. With this in mind, we are of the opinion that our Windows 10 Maxed Out Performance results are very close to what we can expect from OCZ's retail version.
Before we get off-track, let's get back to what this review is really about. Is Toshiba's 1TB XG5 a better performing OEM OS disk than Samsung's 1TB PM961? We are of the opinion that the answer to that question is yes. Based on our PCMark 8 results and our SYSmark results we believe the XG5 to be the superior OS disk. This is quite an unexpected accomplishment. We cannot remember a time where anyone has delivered a better performing SSD than its Samsung equivalent.
- Moderate Workload Performance
- Premium Components
- Single-Sided Design
- OS Caching
|Overall TweakTown Rating||94%|
The Bottom Line: Toshiba's XG5 is the best performing TLC-based OEM SSD we've tested to date.
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- Page 1 [Introduction, Drive Specifications, Pricing & Availability]
- Page 2 [Drive Details]
- Page 3 [Test System Setup & Drive Properties]
- Page 4 [Synthetic Benchmarks – ATTO & Anvil Storage Utilities]
- Page 5 [Synthetic Benchmarks - CrystalDiskMark & AS SSD]
- Page 6 [Benches (OS) - Vantage, PCMark 7, PCMark 8 & SYSmark 2014 SE]
- Page 7 [Benchmarks (Secondary) - IOPS, Response & Transfer Rate]
- Page 8 [Benchmarks – 70/30 Mixed Workload & Sustained Sequential Write]
- Page 9 [Maxed-Out Performance (MOP)]
- Page 10 [Final Thoughts]