EXCERIA PLUS G2 SSD / EXCERIA PLUS SSD / EXCERIA SSD: 4KiB random performance is measured with CrystalDiskMark 6.0.2 x64, Q=32,T=8. Rather more specific to this WD drive is the latest 2.0 version of the company's Game Mode drive management software. WD claims it improves game loading times courtesy of a so-called "read look-ahead" algorithm, which predictively caches game data. It now runs automatically, detecting when games are loaded. How much that kind of feature actually makes a difference in the real world is notoriously difficult to pin down. But it's unlikely to be revolutionary. It's also pretty speedy in random workloads, which will make for a snappier system. It comes in at 75MB/s read and 291MB/s, which is in the mix with some of the faster Gen4 and first-wave Gen5 drives we've tested. In need of a lot more storage capacity? Look no further than the Lexar NM790. Available with up to four terabytes of storage, there's really no need to worry about your burgeoning Steam library any longer with one of these installed in your PC.

We put every SSD we get in the PC Gamer labs through their paces in various benchmarks made up of a mix of synthetic tests and real-world applications. To ascertain a drives sequential throughput, we use ATTO SSD Benchmark for compressible data (a best-case scenario) and AS SSD for incompressible data (more realistic). We also test random throughput with AS SSD and a combination of CrystalDiskMark 7.0 and Anvil Pro. Of course, to show off the lighting, you will need to have an open-frame rig, or one with a see-through case. If you've already RGB'd your keyboard, mouse, video card, motherboard, case, and headphones, and are at a loss for what's left, the Spectrix S40G makes enough sense both in performance and looks to belong in any lighting-obsessed custom PC builder's arsenal. It's a highly competitive SSD with great performance and an attractive design and offers good value for money. Know which bus you're on. In a laptop-upgrade scenario, you're almost certainly swapping out one M.2 drive for another, with the intent of gaining capacity. Make sure you know the specifications of the drive coming out of your system—and whether it's reliant on the SATA or PCI Express bus—so you can install the same, presumably roomier kind going in. EXCERIA PLUS G3 SSD / EXCERIA with Heatsink SSD: Sequential speeds are measured with CrystalDiskMark 8.0.4 x64, Q=32, T=1.Definition of capacity: KIOXIA defines a megabyte (MB) as 1,000,000 bytes, a gigabyte (GB) as 1,000,000,000 bytes and a terabyte (TB) as 1,000,000,000,000 bytes. A computer operating system, however, reports storage capacity using powers of 2 for the definition of 1GB = 2

Smaller-capacity 32GB and 64GB M.2 SSDs are also available for use in embedded applications or for SSD caching, but these are of marginal interest to upgraders or PC builders. Pricing on these drives ranges anywhere from 10 to 75 cents per gigabyte, and the biggest factor affecting price is the bus type of the drive. Slightly less edifying are the P41's operating temps. At a 71°C peak, it's a little toastier than we'd ideally like. Not that we saw any signs of any thermal throttling. But temps that high is a teensy bit of a long-term reliability concern. Though it can't quite match the gaming prowess of some of the latest generation of PCIe 4.0 speedsters, the 990 Pro with Heatsink still offers respectable gaming performance while being a thoroughbred workhorse for creative tasks. It's an appealing choice and a worthy upgrade from the 980 Pro. In many other regards, this X model is a dead ringer for the SN850. We’re talking four lanes of PCIe Gen 4 connectivity in the now ubiquitous M.2 2280 form factor. But the 1TB model reviewed here is now the entry-level option. There’s no longer a 512GB model. What’s more, WD’s in-house controller chip, provided by compatriot SanDisk, has been revised, though detailed specifics aren't provided. Reduced operating temps are another clear benefit of this new drive. The old SN850 hit a toasty 77°C. The new drive hits just 58°C under sustained load. That's a very worthwhile improvement. Elsewhere, the gains are less obvious, albeit the SN850 was already a great drive. The 4K random access results are a little disappointing, showing little to no improvement. Likewise, don't expect big gains in system-wide measures of performance like PCMark 10.Of course, SK Hynix isn't new to this space, but the new P41 is arguably the brand's first tilt at a truly high-end M.2 drive. The old SK Hynix Gold P31 was a bit of a clunky old thing, limited as it was to the PCIe 3.0 interface and a controller chip with a mere four memory channels. The new Platinum P41? It's got it all.

Running on the same basic interface as your graphics card, NVMe SSDs deliver more raw bandwidth and performance than any SATA-based SSD could ever offer. They're also a lot smaller than any other hard drive or SSD too, which all means that the best NVMe SSDs are perfect for either that small form factor build you always wanted or a monstrous high-end gaming PC build. What PCIe generation should I look for? The first attempt was a new form factor called mini-SATA, or mSATA. The boiled-down essence of an SSD with the shell removed, an mSATA drive is a bare, rectangular circuit board. (Most mSATA drives relevant to upgraders measure about 1 by 2 inches.) mSATA drives fit into a special slot in a laptop's logic board or on a PC motherboard. As the name suggests, the slot is a conduit to the Serial ATA bus in the system. The interface on the drive end is an edge connector on the PCB, as opposed to the usual SATA cabling. The mSATA drive also draws all the power it needs through the slot.The ADATA XPG Spectrix S40 is an unapologetically bright RGB-lit PCIe 3.0 NVMe M.2 SSD that blings up your PC. Its 4K read and write speeds should keep most gamers happy, too. The ADATA XPG Spectrix S40G carries some respectable wins out of its duel with other competing drives we've tested, and it looked great doing it.

It's in the real-world tests where the SN770 really struts its stuff. You'd be hard-pushed to tell the difference between this drive and much faster offerings in most day-to-day operations. Given this is the cheaper drive right now, that counts for a lot. The SN850 is the better drive if you need better performance, but you will pay considerably more. Even in mSATA's heyday, though, a replacement was in the works. During development, it was known as NGFF, for "Next-Generation Form Factor." As it took shape, though, it took on its current, final name: M.2. The drives would be smaller, potentially more capacious, and, most important, not necessarily reliant on SATA.The earliest versions of M.2 PCI Express SSDs made use of the PCI Express Gen 2.0 x2 interface, which defines a throughput ceiling that's higher than SATA 3.0's, but not enormously so. That evolved into PCI Express Gen 3.0 x2 and x4, paired with a technology called Non-Volatile Memory Express (NVMe) to propel performance even further, especially with heavy, deeply queued workloads. The AHCI (Advanced Host Controller Interface) command protocol was designed for much slower media (i.e., spinning magnetic disks). AHCI is inefficient with modern SSDs, so a new standard was developed: NVMHCI (Non-Volatile Memory Host Controller Interface). Combine NVMHCI with a fast PCIe interface, and you have NVMe, Non-Volatile Memory Express. It's a much-improved interface developed around the needs of flash memory rather than spinning disks. What's NVMe performance like in the real world? The Samsung SSD 990 Pro, the company's flagship PCI Express 4.0 NVMe internal solid-state drive, has a hard act to follow in the Editors' Choice-winning SSD 980 Pro, but for the most part it makes a great product even better. This power-efficient drive gets high marks for raw speed, everyday application performance, a strong software suite, and hardware-based encryption. The heatsink-equipped version of this drive performed slightly better than the non-heatsink version (which we tested using our testbed's motherboard's heatsink) in most of our benchmarks. It doesn't quite merit the 980 Pro's Editors' Choice award, because other recent internal SSDs have outpaced it in our gaming benchmarks, but its overall capability makes this Samsung a versatile drive well-suited for creative tasks. Who It's For The XS70 is priced well for a high-performance 2TB SSD, but there's fierce competition from other third-party SSD makers in this price range.The Silicon Power XS70 2TB SSD is a 2280 (80mm length) M.2 PCIe NVMe drive. It combines Micron 176-Layer TLC NAND with a Phison PS5018-E18 controller and 2GB of DDR4 RAM. That combination is common to many of the best SSDs, including the highly regarded Seagate FireCuda 530 and Kingston KC3000.