Computer Case Parts Price Comparison 2026
Compare 498 computer case parts — HDD brackets, ARGB cables, GPU holders and more — from Corsair, Phanteks and Fractal Design at the best UK prices.
Computer case parts are the unsung heroes of any PC build — the brackets, cables, cages, and holders that keep everything properly seated, lit, and ventilated. Our catalogue spans 498 products, from a £4 £ HDD mounting bracket to enterprise-grade HPE server cages pushing well beyond £39 £. That spread tells you something important: this category serves two very different audiences, and knowing which one you are will save you both time and money.
For consumer PC builders, the action sits firmly in the mid-range. Brands like Phanteks, Corsair, Lian Li, and Fractal Design dominate the enthusiast end, offering ARGB extension cables, GPU riser kits, and universal HDD brackets that genuinely improve a build rather than just completing it. Corsair's ARGB extension cables, for instance, are among the most-listed products here — a sign that lighting management has become a real pain point as builds grow more complex. Meanwhile, CoreParts accounts for over a hundred listings at a notably low average price, making it the go-to for straightforward replacement parts where aesthetics don't matter.
On the professional side, HPE and Supermicro cater to rack and server environments with drive bay kits and fan holders that carry a significant premium — HPE's average sits at nearly £437 across its 63 listings. These are not impulse purchases; they're infrastructure components where compatibility with a specific server generation is non-negotiable. If you're sourcing parts for a ProLiant or similar, double-check the generation compatibility before comparing prices.
One thing worth flagging: the gap between a well-chosen case part and a poorly matched one is enormous. A GPU riser cable that doesn't support PCIe 4.0 bandwidth, or an ARGB extension wired to the wrong pin standard, can cause real problems. We'd always recommend cross-referencing your case's manual alongside the product specs — especially for computer cases with proprietary mounting systems. If you're also looking at airflow improvements, our computer cooling systems category is the natural next stop, and drive bay panels are worth a look if you're reconfiguring storage access.
Prices shift regularly — particularly around Black Friday and Amazon Prime Day — so it's worth setting a price alert on any part you're not buying immediately. The best deals on Phanteks and Fractal Design accessories tend to appear in the January sales, when retailers clear stock ahead of new case launches.
How to Choose the Right Computer Case Part
With prices ranging from 4 £ to well over 39 £, picking the wrong case part is an easy and frustrating mistake. The core issue is compatibility — not just physical fit, but electrical standards, airflow impact, and whether the part is designed for a consumer tower or a rack-mounted server. Here's what actually matters.
Chassis compatibility: form factor and mounting points
This is the first filter, and it eliminates more options than any other. A bracket designed for an ATX mid-tower won't fit a Mini-ITX case, and a server drive cage built for a 2U HPE chassis won't slot into a Fractal Design tower. Always verify the form factor (ATX, Micro-ATX, Mini-ITX, E-ATX, or rack-mount) and the specific mounting hole pattern. Proprietary cases from brands like NZXT or Corsair sometimes use non-standard spacing — check the case manual, not just the product listing.
ARGB vs RGB: getting the pin standard right
This trips up a surprising number of builders. 3-pin 5V ARGB and 4-pin 12V RGB are not interchangeable — connecting the wrong cable can damage your motherboard header or LED strips. Corsair's iCUE ecosystem also uses a proprietary connector that differs from the ARGB standard used by ASUS Aura, MSI Mystic Light, and Gigabyte RGB Fusion. If you're buying an extension cable, match it to your motherboard's header type, not just the device you're connecting. When in doubt, a simple ARGB hub with universal headers is a safer investment.
Drive cage capacity and interface support (SAS/SATA/NVMe)
For storage-heavy builds or server upgrades, the cage's interface support matters as much as its bay count. A cage that handles SAS/SATA but not NVMe is already a compromise for modern workloads. HPE's premium bay kits support mixed configurations (e.g., 6 SFF SAS/SATA + 2 NVMe), which justifies their higher price in enterprise contexts. For home builds, a simple 2.5"-to-3.5" adapter bracket from CoreParts or 2-Power does the job at a fraction of the cost — provided you only need SATA.
GPU riser cable: PCIe generation and length
GPU riser cables have become essential for vertical GPU mounting, but they're not all equal. A PCIe 3.0 riser will bottleneck a modern GPU in bandwidth-sensitive scenarios — look for PCIe 4.0 certification if you're running an RTX 4000-series or RX 7000-series card. Length matters too: too short and you'll stress the connectors; too long and signal integrity can degrade. The Fractal Design Flex 2 and be quiet! Riser Cable are among the more reliable options here, both supporting PCIe 4.0 and offering sensible cable lengths for standard mid-tower builds.
Build quality and vibration damping
Cheap steel brackets flex under load, and HDD cages without rubber grommets transmit every platter vibration directly to the chassis — audible as a low hum at idle. For mechanical hard drives especially, silicone or rubber damping mounts make a noticeable difference. Aluminium brackets are lighter and resist corrosion better than bare steel, though they cost more. At the budget end (under 7 £), you're mostly looking at stamped steel with no damping; from 7 £ upwards, better materials and damping become more common.
Professional vs consumer: certifications and environment
If you're sourcing parts for a business server or rack environment, RoHS and CE certification aren't optional — they're often required for compliance. HPE and Supermicro parts carry these as standard. For home builds, certifications matter less, but it's still worth checking that ARGB cables are rated for the current draw of your LED setup. Overloaded headers are a common and avoidable cause of motherboard damage.
- Budget essentials (From 4 £ to 7 £) : Mostly HDD mounting brackets, simple adapters, and basic ARGB extension cables from CoreParts, 2-Power, and Evo Labs. Perfectly adequate for straightforward compatibility fixes — don't expect premium materials or vibration damping. Good for replacing a lost bracket or adapting a 2.5" SSD to a 3.5" bay.
- The sweet spot for builders (From 7 £ to 16 £) : This is where Phanteks, Lian Li, and Corsair start appearing in earnest. Universal HDD brackets with better construction, ARGB hubs, and fan holders that actually fit multiple case sizes. Most consumer PC builders will find everything they need here without overspending.
- Enthusiast and specialist parts (From 16 £ to 39 £) : GPU riser cables (Fractal Design Flex 2, be quiet! Riser Cable), RGB enhancement kits for full-tower cases, and entry-level server components. These are deliberate purchases for specific upgrades — the Phanteks NV7 RGB kit or the ASUS ROG Herculx GPU holder, for instance, are genuinely useful but only if you have the right case.
- Enterprise and server-grade (Over 39 £) : HPE and Supermicro territory. Drive bay kits, fan holders, and rack components designed for ProLiant and similar server platforms. The prices reflect enterprise-grade build quality and generation-specific compatibility. Not relevant for home builds — but if you're maintaining a server fleet, these are the parts you need.
Top products
- Corsair CL-9011134-WW computer case part Universal ARGB extension cable (Corsair) : A reliable ARGB extension from one of the most trusted names in PC accessories — ideal for tidy cable management in Corsair iCUE builds, but double-check pin compatibility before buying if you're on a non-Corsair system.
- Phanteks PH-HDDKT_03 computer case part Universal HDD mounting bracket (Phanteks) : Phanteks' build quality is consistently above average for the price — this bracket is a sensible upgrade over generic steel alternatives, particularly if you're mounting mechanical drives and want to reduce vibration transfer.
- Fractal Design Flex 2 Universal GPU kit (Fractal Design) : One of the better PCIe 4.0 riser kits available — well-made, properly shielded, and genuinely universal across most Fractal Design cases. Pricier than no-name alternatives, but the signal integrity and build quality justify it for high-end GPUs.
- ASUS ROG Herculx Graphics Card Holder Universal Graphic card holder (ASUS) : A practical solution for preventing GPU sag on heavy cards — the ROG branding adds a premium feel, and the adjustable design fits most mid and full-tower cases. Purely mechanical though; don't expect it to improve airflow or thermals.
- Phanteks NV7 Full Tower RGB Light Enhancement Kit (Phanteks) : Only relevant if you own the Phanteks NV7 — this isn't a universal lighting kit despite the name. For NV7 owners, it's a worthwhile aesthetic upgrade; for everyone else, look elsewhere.
Related categories
Frequently Asked Questions
How do I know if a case part is compatible with my PC case?
Check the form factor first — ATX, Micro-ATX, Mini-ITX, or rack-mount — then verify the specific mounting hole pattern against your case's manual. Many parts are labelled "universal", but that typically means they fit most standard ATX layouts, not every case on the market. Proprietary cases from Corsair, NZXT, or Lian Li sometimes use non-standard spacing, so always cross-reference the part's dimensions with your case's internal measurements before buying.
What's the difference between ARGB and RGB extension cables, and can I mix them?
No — ARGB (3-pin, 5V) and RGB (4-pin, 12V) are incompatible standards and should never be mixed. Connecting a 12V RGB device to a 5V ARGB header, or vice versa, can permanently damage your motherboard header or the LED component. Additionally, Corsair uses a proprietary connector for its iCUE system that differs from the standard ARGB pinout used by ASUS, MSI, and Gigabyte boards. Always match the cable to your motherboard's specific header type.
Is a GPU riser cable worth buying for a vertical GPU mount?
Yes, but only if you buy the right one. A PCIe 4.0-rated riser cable is essential for any modern GPU — a PCIe 3.0 cable will work but may introduce a measurable bandwidth bottleneck with high-end cards. The Fractal Design Flex 2 and be quiet! Riser Cable are both solid choices that support PCIe 4.0 and are designed to fit standard mid-tower cases. Avoid very cheap, unbranded risers — poor shielding and substandard connectors are a real risk at the low end of the market.
Are HPE computer case parts compatible with non-HPE servers?
Generally no — HPE drive cages, fan holders, and bay kits are designed for specific ProLiant server generations and use proprietary mounting systems. Fitting an HPE part into a non-HPE chassis is rarely straightforward and often impossible without significant modification. If you're building or upgrading a standard desktop or tower server, stick to consumer-grade parts from Phanteks, Fractal Design, or Corsair. HPE parts are only worth the premium if you're maintaining an existing HPE infrastructure.
What should I watch out for when buying cheap HDD mounting brackets?
The main risks are poor steel quality that flexes under load, and the absence of vibration damping — both of which matter most if you're mounting mechanical hard drives. A bracket that vibrates will transmit noise to the chassis and, over time, can stress the drive's mounting points. Budget brackets under 7 £ are fine for SSDs, which are light and vibration-insensitive, but for HDDs it's worth spending a little more to get rubber grommets or silicone damping mounts.
Do computer case parts come with a warranty in the UK?
Most branded parts — Corsair, Phanteks, Fractal Design, be quiet! — come with at least a one-year manufacturer's warranty, and some offer two years. CoreParts and generic brands typically offer shorter or less clearly defined warranty terms. When buying from UK retailers like Currys, Amazon.co.uk, or John Lewis, you also benefit from statutory rights under the Consumer Rights Act 2015, which gives you up to six years to claim for faulty goods regardless of the manufacturer's warranty period.
Can I use a server drive cage in a standard ATX desktop case?
Rarely, and it's usually not worth attempting. Server drive cages — particularly HPE and Supermicro units — are designed for rack-mount chassis with specific bay dimensions, backplane connectors, and airflow paths that don't translate to desktop cases. The physical dimensions alone will typically prevent installation. If you need additional drive bays in a desktop build, a purpose-built HDD cage or bracket from Phanteks or Fractal Design is the correct solution and will cost considerably less.