Best Computer Accessories & Parts: 5 Smart Picks for 2026

The best computer accessories and parts should improve a PC in ways you can actually notice, whether that means faster storage, quieter cooling, cleaner power delivery, better desktop control, or easier daily navigation. These five picks cover essential upgrades for gaming PCs, workstations, creators, home offices, and enthusiast desktop setups.

Quick Comparison

Samsung 990 PRO

Best For: High-performance storage upgrades

Key Features:

• PCIe 4.0 NVMe interface
• Sequential reads up to 7,450 MB/s
• Sequential writes up to 6,900 MB/s
• Multiple capacity options
• Samsung Magician software support
• Suitable for gaming and workstation storage

The Samsung 990 PRO is one of the easiest upgrades to appreciate because storage performance affects game installation, application loading, file transfers, project work, and general responsiveness. Samsung rates the drive at sequential read speeds up to 7,450 MB/s and write speeds up to 6,900 MB/s on supported PCIe 4.0 systems.

For gaming, an SSD like the 990 PRO is most useful when replacing an older SATA SSD, mechanical hard drive, or slower NVMe drive. It will not automatically increase frame rates, but it can reduce storage-related waiting, make large game updates less frustrating, and provide enough bandwidth for demanding applications running alongside games.

High-capacity versions also work well for users trying to consolidate several smaller drives. Modern game installations can occupy hundreds of gigabytes, so a larger NVMe SSD simplifies library management while eliminating extra SATA power and data cables. That is especially useful in compact cases where cable space and drive mounts are limited.

What Makes It Different: The 990 PRO combines mature PCIe 4.0 performance with Samsung’s own storage ecosystem. It is particularly attractive for users who want a fast primary drive without moving to a newer PCIe generation that may provide limited practical benefits in ordinary gaming workloads.

Pros:

• Very high PCIe 4.0 speeds
• Good fit for gaming libraries
• Useful for large file transfers
• Compact M.2 form factor
• No SATA cables required
• Strong primary-drive option

Cons:

• Requires a suitable M.2 slot
• Maximum benchmark speeds need compatible hardware
• Faster storage does not directly improve GPU performance

Use Case: Installing Windows, games, editing software, frequently used applications, and large active projects on one high-performance internal SSD.

Who It’s For: Gamers, creators, developers, and workstation users who want a fast PCIe 4.0 storage upgrade without adding extra cables or external hardware.

Noctua NH-D15 G2

Best For: High-end air-cooled PC builds

Key Features:

• Dual-tower heatsink
• Eight heatpipes
• Two NF-A14x25r G2 PWM fans
• 168 mm total height
• AM5 and modern Intel socket support
• Six-year warranty
• Multiple base-convexity versions

The Noctua NH-D15 G2 is designed for users who want powerful CPU cooling without relying on an AIO liquid cooler. The current standard model uses eight heatpipes and two 140 mm-class NF-A14x25r G2 PWM fans. Noctua lists a total cooler height of 168 mm, so case clearance should be checked carefully before purchase.

Each included fan operates up to 1,500 RPM, with Noctua listing maximum airflow at 91.58 CFM and maximum acoustical noise at 24.8 dB(A). The goal is not simply to move as much air as possible, but to maintain strong cooling without requiring extremely high fan speeds that make a gaming PC unnecessarily loud.

Air cooling also has practical advantages for long-term ownership. There is no pump, radiator tubing, or coolant loop to manage, and the fans can be replaced independently if needed. The trade-off is physical size: at more than 1.5 kg with both fans installed, the NH-D15 G2 demands a spacious case and careful RAM clearance planning.

Noctua also produces different base-convexity versions for specific CPU platforms. The standard model is the safest general-purpose choice, while HBC and LBC versions are optimized for different heat-spreader shapes. Buyers should select the correct version rather than assuming every NH-D15 G2 variant is interchangeable.

What Makes It Different: The NH-D15 G2 is built for enthusiasts who want near-AIO-class cooling behavior from a large traditional heatsink while preserving the mechanical simplicity of air cooling.

Pros:

• Strong cooling capacity
• Eight heatpipes
• Dual premium PWM fans
• Low-noise focus
• No pump required
• Six-year warranty
• Broad socket compatibility

Cons:

• Very large
• Heavy
• Requires case-clearance checks
• Can interfere with tall RAM depending on configuration

Use Case: Cooling a powerful gaming or productivity CPU in a full-size build where reliability, acoustics, and long-term maintenance matter.

Who It’s For: Enthusiasts who want premium air cooling and have enough chassis space for a large dual-tower heatsink.

Corsair RM850x SHIFT

Best For: Modern gaming PCs with powerful GPUs

Key Features:

• 850-watt continuous output
• Fully modular cabling
• Side-mounted Type-5 connectors
• ATX 3.1 support
• PCIe 5.1 compliance on current model
• Native 12V-2×6 GPU cable
• 10-year warranty

A quality power supply is less exciting than a new GPU, but it affects every component in the system. The Corsair RM850x SHIFT provides 850 watts of continuous output and uses a fully modular design. Current versions support ATX 3.1, include a native 12V-2×6 GPU cable, and carry a ten-year warranty.

The SHIFT design moves modular connectors from the rear of the PSU to its side. This makes cables easier to connect after the power supply has been installed, particularly in cases where the traditional connector panel becomes difficult to reach. The design can also simplify cable changes when upgrading a graphics card or adding storage.

That advantage introduces an important compatibility requirement. Corsair states that the case must provide enough width and side access for the cable connectors. The earlier RM850x SHIFT specification recommends a case at least 210 mm wide, so users should verify their chassis layout before buying instead of assuming every ATX case will accommodate it.

Efficiency and acoustic behavior are also strong priorities. Corsair lists 80 PLUS Gold efficiency, a 140 mm fluid-dynamic-bearing fan, Zero RPM operation at lighter loads, and industrial-grade 105°C Japanese electrolytic capacitors. These features suit systems expected to remain under demanding gaming loads for long periods.

What Makes It Different: Side-mounted modular connectors are the defining feature. They make cable access easier in compatible cases, but this is not a PSU to buy without checking chassis dimensions first.

Pros:

• 850W output
• Fully modular design
• ATX 3.1 support
• Native modern GPU power cable
• Zero RPM mode
• 10-year warranty
• Easy-access side connectors

Cons:

• Case compatibility matters
• Side connector layout will not suit every chassis
• 850W may be unnecessary for modest builds

Use Case: Powering a modern gaming PC with a high-end GPU, multiple storage devices, and future upgrade plans.

Who It’s For: Builders who want a premium modular power supply and a case wide enough to take advantage of the SHIFT connector layout.

Logitech MX Master 3S

Best For: Productivity and everyday desktop control

Key Features:

• Up to 8,000 DPI tracking
• Tracks on many surfaces, including glass
• Quiet Click technology
• MagSpeed electromagnetic scroll wheel
• Horizontal thumb wheel
• Customizable controls
• Multi-device workflow support

The Logitech MX Master 3S is not a gaming mouse in the traditional sense, but it is one of the most useful computer accessories for people who work at the same PC they use for gaming. Logitech uses an 8,000 DPI sensor that can track on many surfaces, including glass of sufficient thickness, making it flexible across different desks.

Quiet Click switches reduce left- and right-button noise significantly compared with the earlier MX Master 3, while the MagSpeed wheel can move through long documents or spreadsheets extremely quickly. Logitech states that the wheel can scroll up to 1,000 lines per second, which is genuinely useful for coding and document-heavy workflows.

The thumb wheel is another practical advantage because it can be assigned to horizontal scrolling in timelines, spreadsheets, and creative applications. Combined with customizable buttons through Logi Options+, the MX Master 3S can reduce repetitive keyboard shortcuts during editing, browsing, office work, and general productivity.

Its limitation is competitive gaming. The relatively heavy ergonomic body and productivity-focused wireless design are not intended to replace a lightweight esports mouse. Users who play competitive FPS titles may want a separate gaming mouse while keeping the MX Master 3S for work and general desktop use.

What Makes It Different: The MX Master 3S is built around workflow efficiency rather than raw gaming performance. It is most valuable to users who spend hours navigating documents, editing timelines, browsing, or switching between applications.

Pros:

• 8,000 DPI sensor
• Quiet primary clicks
• Excellent scrolling system
• Horizontal thumb wheel
• Comfortable ergonomic shape
• Customizable controls
• Works well with high-resolution displays

Cons:

• Not designed for competitive FPS gaming
• Larger and heavier than esports mice
• Right-handed shape

Use Case: Office work, coding, content production, browsing, spreadsheets, editing, and general desktop use alongside a gaming setup.

Who It’s For: Professionals and power users who want a feature-rich productivity mouse rather than the lightest possible gaming peripheral.

Elgato Stream Deck MK.2

Best For: Shortcuts, streaming, and workflow automation

Key Features:

• 15 customizable LCD keys
• 3 x 5 key layout
• USB connectivity
• Custom icons
• Multi-action workflows
• App and plugin integration
• Detachable desktop stand

The Elgato Stream Deck MK.2 uses 15 customizable LCD keys that can launch applications, trigger shortcuts, control streaming functions, or run multi-step actions. Elgato lists a USB 2.0 interface and a 118 x 84 x 25 mm body without the stand, keeping the device compact enough to sit beside a keyboard.

Its value goes well beyond livestreaming. A programmer can assign project commands, an editor can trigger timeline actions, and an office user can open frequently used folders or applications. Custom icons also make shortcuts easier to identify than memorizing complex keyboard combinations, especially for actions used only occasionally.

Profiles can change depending on the active application, so the same physical keys can serve completely different functions in Photoshop, OBS, a browser, video software, or productivity tools. Multi-action commands can also perform several steps from one button, turning the device into a practical control panel for repetitive workflows.

For gaming, the Stream Deck can handle communication shortcuts, launchers, recording controls, audio functions, and supporting applications. It should not be treated as a replacement for a keyboard or macro pad in every game, but it is useful for tasks that would otherwise require leaving the game window or remembering secondary shortcuts.

What Makes It Different: Unlike a standard macro keyboard, every key contains a small display. The labels can change automatically between profiles and folders, which makes a limited number of physical buttons much more flexible.

Pros:

• 15 programmable LCD keys
• Highly visual controls
• Excellent software flexibility
• Useful beyond streaming
• Supports multiple profiles
• Compact desktop footprint
• Good for repetitive workflows

Cons:

• Requires desk space
• Benefits depend on software setup
• Unnecessary for basic PC users
• Not a replacement for core input devices

Use Case: Streaming, editing, productivity automation, application shortcuts, recording control, and frequently repeated desktop tasks.

Who It’s For: Creators, streamers, developers, gamers, and power users who want physical one-touch control over software actions.

How to Choose Computer Accessories and Parts

Upgrade the Biggest Bottleneck First

Do not buy accessories simply because they are popular. Identify the component that limits your current experience. Slow storage suggests an SSD upgrade, high CPU temperatures point toward better cooling, and unstable power delivery may justify a PSU replacement. Productivity accessories make sense after core hardware requirements are covered.

Check Compatibility Before Buying Internal Parts

Internal components require more planning than peripherals. Verify motherboard interfaces, CPU sockets, PSU dimensions, case clearance, power connectors, and available M.2 slots. A high-quality component provides no value if it physically does not fit or forces you to replace several other parts unexpectedly.

Consider Future Upgrades

A component can be worth spending more on when it survives multiple upgrade cycles. A quality PSU, CPU cooler, or peripheral may move into the next PC build, while highly platform-specific hardware may not. Think about what you expect to replace over the next several years before deciding where premium pricing makes sense.

Separate Gaming Needs From Productivity Needs

The best accessory for office work is not always the best for competitive gaming. An MX Master 3S is excellent for productivity but less suitable for esports than a lightweight gaming mouse. Likewise, a Stream Deck may transform a creator workflow while providing little value to someone who only launches games and browses the web.

Do Not Overspend on Specifications You Cannot Use

PCIe bandwidth, PSU wattage, and cooling capacity should match your actual hardware. Buying the fastest or largest specification does not automatically make the PC better. A balanced system usually provides more value than one premium component surrounded by hardware that cannot take advantage of it.

Pay Attention to Warranty and Support

Long warranties matter most for components expected to remain in several builds. Power supplies, coolers, and premium peripherals can last for years if manufacturers continue supporting replacement parts and warranty claims. A slightly cheaper product may become poor value if it must be replaced after one upgrade cycle.

FAQ

Which Computer Part Should I Upgrade First?

Upgrade the component causing the clearest limitation. A system booting from a hard drive benefits greatly from an SSD, while a gaming PC with an adequate SSD but a weak graphics card needs a different upgrade. Check performance, temperatures, storage usage, and power requirements before deciding.

Are Expensive Computer Accessories Worth It?

They can be when the extra features solve a real problem. Premium mice, control pads, cooling hardware, and power supplies often provide better adjustment, durability, acoustics, or workflow efficiency. They are poor value when the buyer never uses those advantages.

Is the Samsung 990 PRO Good for Gaming?

Yes. Its PCIe 4.0 performance makes it a strong gaming and general-purpose SSD. However, it should be purchased for fast storage, large game libraries, and application performance rather than expecting major increases in in-game frame rates.

Do I Need an 850W Power Supply?

Not every PC needs 850 watts. The correct capacity depends on the CPU, GPU, additional hardware, transient power requirements, and future upgrade plans. Always check the graphics-card manufacturer’s recommendation and calculate enough headroom for the complete system.

Is a Stream Deck Only for Streamers?

No. The Stream Deck can launch programs, execute shortcuts, control software, run multi-action workflows, and switch profiles for different applications. Streamers benefit from it, but editors, developers, office users, and other power users can also create useful workflows.

Conclusion

The best computer accessories and parts are the ones that solve a specific limitation instead of simply adding more hardware. Samsung 990 PRO improves storage, Noctua NH-D15 G2 handles demanding CPUs, Corsair RM850x SHIFT provides premium power delivery, MX Master 3S improves daily navigation, and Stream Deck MK.2 adds flexible workflow control.