Silicon Power XS70

Introduction

If you're upgrading from a tired SATA drive or building a new gaming rig, the Silicon Power XS70 deserves serious consideration. This PCIe Gen 4 NVMe drive delivers flagship-level performance without the flagship price tag, making it an intriguing option for gamers, content creators, and anyone ready to experience what modern storage can do. The XS70 targets enthusiasts who want blistering speeds but don't want to pay the premium commanded by household names like Samsung or WD, and it comes with an eye-catching aluminum heatsink that meets PlayStation 5 requirements right out of the box.

Product Overview

The Silicon Power XS70 (also marketed as XPower XS70) is a standard M.2 2280 form factor drive that slots into any PCIe 4.0 x4 compatible motherboard. Under the hood sits Phison's proven PS5018-E18 controller, the same silicon powering many premium Gen 4 drives from bigger brands. This controller pairs with Micron's excellent 176-layer TLC NAND flash, which represents current-generation storage technology that balances speed, endurance, and cost effectively.

The drive includes proper DDR4 DRAM cache for metadata management, specifically 1GB per terabyte of capacity using SK hynix modules. This isn't the budget approach of DRAM-less designs that rely on slower Host Memory Buffer (HMB) implementations. The result is consistent performance even under complex workloads that would cause DRAM-less drives to stumble.

Silicon Power offers the XS70 in three capacities: 1TB, 2TB, and 4TB. Each capacity ships with an attractive dual-tone aluminum heatsink in black and silver that's clearly designed with aesthetics in mind, though it does provide functional cooling despite favoring form over optimal airflow design. The heatsink meets PS5 dimensional requirements, staying under the 11.25mm height restriction, making this an instant drop-in upgrade for Sony's console.

Performance & Real World Speed

Silicon Power rates the XS70 at up to 7,300 MB/s sequential read and up to 6,800 MB/s sequential write speeds for the 2TB and 4TB models, with the 1TB variant dipping slightly to 6,000 MB/s writes. Random performance reaches up to 1 million IOPS for both reads and writes on the larger capacities. These specifications place the XS70 firmly in flagship Gen 4 territory, effectively maxing out what PCIe 4.0's four lanes can deliver.

In practical terms, these speeds translate to dramatic improvements over older storage. If you're coming from a SATA SSD that tops out around 550 MB/s, you're looking at read speeds more than thirteen times faster. Game installations that took minutes shrink to seconds. Large video project transfers that used to justify coffee breaks now complete before you can alt-tab. Windows boot times become nearly instantaneous, and the drive is more than capable of handling DirectStorage API calls for next-generation gaming engines that stream assets directly to the GPU.

The Phison E18 controller and Micron flash combination delivers strong sustained performance as well. The drive uses an SLC cache (single-level cell mode where TLC flash temporarily operates faster) that handles burst writes effectively. Once you exhaust this cache during sustained writes, performance drops to native TLC speeds, but the transition is more graceful than budget drives. For most users, this cache system works invisibly in the background, only becoming relevant during massive file operations like transferring hundreds of gigabytes in one go.

Real-world scenarios like game load times show measurable advantages over PCIe Gen 3 drives, though diminishing returns mean the jump isn't as dramatic as SATA to Gen 3 was. Content creators working with 4K video footage will appreciate the bandwidth during timeline scrubbing and rendering operations. For general productivity work like web browsing and office applications, the drive feels instantaneous, though you'd say the same about most modern SSDs.

Thermal Management

PCIe Gen 4 drives run hot by nature, with controllers and NAND pushing more data faster than previous generations. The XS70's included aluminum heatsink addresses this reality, though reviews note it prioritizes aesthetics over optimal thermal design. The heatsink successfully keeps temperatures in check during normal use, preventing thermal throttling that would hamper performance. However, it runs warmer than some competing solutions with more aggressive cooling designs.

For desktop PC installations, the drive pairs well with motherboard M.2 heatsinks that typically provide more substantial cooling. Many modern motherboards include beefy heatsinks with better thermal pad contact and airflow optimization. If your motherboard has a quality M.2 heatsink, you might consider removing the XS70's included cooler for better temperatures, though check warranty implications first.

The PS5 represents the most thermally challenging environment for this drive. Sony's console requires a heatsink for the internal M.2 expansion slot, and the confined space with limited airflow means every degree matters. The XS70's heatsink meets Sony's dimensional requirements and provides adequate cooling for console use, though the drive may run slightly warmer than alternatives with more aggressive thermal solutions. For most PS5 users, this won't cause issues during normal gaming sessions.

Compatibility

PC Compatibility

The XS70 works with any motherboard featuring an M.2 slot with PCIe connectivity (key M configuration). The drive supports PCIe 4.0 but maintains backward compatibility with PCIe 3.0 slots, though you'll be limited to Gen 3 speeds in older systems. Most motherboards from 2019 onward support NVMe boot drives without issue, and the drive works seamlessly with Windows, Linux, and macOS systems that have compatible M.2 slots.

Power requirements are standard for PCIe 4.0 drives, drawing more than Gen 3 predecessors but nothing your motherboard can't handle. The drive doesn't require any special BIOS settings beyond enabling NVMe support, which comes enabled by default on modern systems.

PlayStation 5 Internal Expansion

The Silicon Power XS70 fully meets Sony's requirements for PS5 internal storage expansion. The drive achieves the necessary 5,500 MB/s minimum read speed (and substantially exceeds it with 7,300 MB/s capability), uses PCIe 4.0 NVMe connectivity, and comes in the required M.2 2280 form factor. The included heatsink keeps total height under PS5's 11.25mm restriction, making installation straightforward.

Once installed, PS5 games can be stored and played directly from the XS70 with performance indistinguishable from Sony's internal SSD. This dramatically expands your game library capacity without requiring constant deletion and redownloading of titles. The drive also works for storing PS4 games that can be played from the expanded storage.

Xbox Series X/S Compatibility

This drive is NOT compatible with Xbox Series X or Series S internal storage expansion. Microsoft's consoles require proprietary Seagate Storage Expansion Cards exclusively for internal expansion of optimized Series X|S games. You cannot install standard M.2 NVMe drives inside Xbox consoles.

However, the XS70 can be used in an external USB enclosure for storing Xbox One games on Xbox Series consoles, though these backward-compatible titles would need to be transferred to internal storage before playing optimized versions.

Strengths & Weaknesses

The Silicon Power XS70 delivers flagship Gen 4 performance at mid-tier pricing, which represents its core value proposition. The Phison E18 controller paired with Micron's 176-layer TLC NAND creates a genuinely fast drive that competes directly with premium options from Samsung, Western Digital, and Corsair. Where those brands command premiums for their names and software ecosystems, Silicon Power offers functionally similar hardware at lower prices. The 2TB model particularly stands out for value, typically priced $30-50 below comparable competitors while delivering matching performance.

The included heatsink adds value for PS5 users specifically, eliminating the need to purchase separate cooling solutions. While not the most effective thermal design available, it does the job adequately and looks better than most budget alternatives. The drive's five-year warranty and respectable endurance ratings (700 TBW per terabyte, matching industry standards) provide reasonable longevity assurance for typical consumer workloads.

However, the XS70 makes some compromises to hit its pricing. Silicon Power provides no proprietary software for drive management, firmware updates, or health monitoring. This matters less for gaming-focused use but leaves enthusiasts relying on third-party tools like CrystalDiskInfo for drive health tracking. The company's smaller market presence compared to giants like Samsung also raises questions about long-term firmware support and component consistency over the product's lifecycle.

The heatsink, while functional and PS5-compliant, prioritizes aesthetics over optimal thermal performance. Users seeking the absolute coolest-running Gen 4 drive might prefer alternatives with more substantial cooling designs or plan to use motherboard heatsinks instead. Additionally, Silicon Power doesn't include any hardware-based encryption support (TCG Opal), though most consumers rely on software encryption anyway and this omission keeps costs down.

Competition from drives like the Samsung 990 Pro, WD_BLACK SN850X, and Crucial P5 Plus creates challenging comparisons. Samsung offers superior software and potentially more consistent hardware over time but charges significantly more. Crucial's drives often match or undercut Silicon Power's pricing while offering their own brand reputation. The decision ultimately comes down to whether you value brand recognition and software support enough to justify premium pricing when the raw performance differences are negligible.

One concern worth noting: like many second-tier manufacturers, Silicon Power could theoretically change components in future production runs without changing the model number. This industry-wide practice (colloquially called "bait and switch") means early reviews might not reflect hardware in later units. While we have no specific evidence of this with the XS70, it remains a consideration with any non-premium brand.

Verdict: Should You Buy It?

Buy this if:

• You're upgrading from SATA or older Gen 3 storage and want substantial performance gains without paying flagship prices
• You need a PS5-compatible expansion drive and appreciate having the heatsink included rather than purchasing separately
• You're building a gaming PC and want top-tier Gen 4 speeds while staying budget-conscious
• You value price-to-performance ratio over brand recognition and proprietary software features
• You're comfortable using free third-party tools for drive health monitoring instead of manufacturer software

Skip this if:

• You already own a comparable Gen 4 drive and wouldn't benefit meaningfully from the upgrade
• Brand reputation and comprehensive software support matter significantly to you for peace of mind
• You need TCG Opal hardware encryption for security compliance requirements
• Better deals exist on competing Gen 4 drives at the time you're shopping (pricing fluctuates frequently)
• You're building a premium system where marginal thermal performance differences justify spending extra for drives with superior cooling designs