Cooler Master Cosmos Alpha Full Tower PC Case, High Airflow Curved Aluminum
Bottom line: The Cooler Master Cosmos Alpha Full Tower PC Case is a specs-and-price decision rather than a crowd-consensus one in the retro cases & modding category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
Before you buy
- Confirm socket / form-factor / power-rating compatibility against your build before ordering
- Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
Manufacturer description
he COSMOS ALPHA represents the evolution of a legendary flagship series—reborn under FreeForm 2.0 as the ultimate platform for PC enthusiasts and modders. Designed for builders who demand maximum flexibility, extreme cooling, and premium aesthetics, COSMOS ALPHA delivers uncompromised customization Product Sheet_COSMOS ALPHA_V1.5 Crafted with a curved aluminum frame and full tempered glass panels, it preserves the iconic COSMOS identity while integrated ARGB underglow lighting adds modern flair. With FreeForm 2.0, every internal component can rotate left or right, allowing you to design…
SpecPicks Verdict
SpecPicks scored Cooler Master Cosmos Alpha Full Tower PC Case using a rating × review-volume × price-fit model applied to published specs and reviews across the retro cases & modding category. Compare with similarly-priced alternatives in the retro cases & modding category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for retro cases & modding of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- FLAGSHIP COSMOS DESIGN Premium curved aluminum frame with full tempered glass panels preserves the iconic COSMOS look while integrated ARGB underglow elevates your build into a true showcase
- EXTREME HARDWARE COMPATIBILITY Supports E-ATX and EEB motherboards, GPUs up to 400mm, and PSUs up to 240mm with 53mm rear cable clearance and removable dust filters
- FREEFORM 2.0 ROTATABLE LAYOUT All internal components rotate left or right, allowing custom orientations for airflow optimization, desk placement, and visual presentation
- MODULAR SLIDING MOTHERBOARD TRAY Easily switch between air and liquid cooling layouts. Adjust GPU distance to improve airflow or highlight your graphics card
- NEXT-GEN FRONT I/O Equipped with 4× USB-A 5Gbps ports and 2× USB-C 20Gbps ports for ultra-fast data transfer and modern devices
Full Specifications
| Brand | Cooler Master |
|---|---|
| Color | Silver/Black |
| Material | Aluminum |
| Case Type | Full Tower |
| Model Name | C700 |
| Connectivity | USB-C |
| Model Number | C700-KGNN-S00 |
| Compatibility | PC, Switch |
| Cooling Method | Air, Water |
| Mfr Part Number | C700-KGNN-S00 |
| Number of Items | 1 |
| Antenna Location | Business, Gaming |
| Enclosure Material | Aluminum |
| Total USB 3.0 Ports | 6 |
| Warranty Description | 2 Year Manufacturer |
| Supported Motherboard | Mini ITX, Micro ATX, ATX, Extended ATX, EEB |
| Item Dimensions D x W x H | 26.34"D x 13"W x 25.16"H |
| Motherboard Compatability | Mini ITX, Micro ATX, ATX, Extended ATX, EEB |
| Power Supply Mounting Type | Bottom Mount |
| Recommended Uses For Product | Business, Gaming |
Ready to buy?
Cooler Master Cosmos Alpha Full Tower PC Case, High Airflow Curved Aluminum is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
Related Retro Cases & Modding
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Retro Handhelds in 2026 — From $35 to $500
- How to Build a Windows 98 Retro PC in 2026
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best 1440p Gaming GPUs in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
More reviews from the SpecPicks archive
Browse all reviews →- Is the RTX 3060 12GB Still Worth It for 1440p Gaming in 2026?
- Period-Correct 1999 LAN Rig: Pentium III, Voodoo3 3000, Sound Blaster
- Logitech G29 / G920 Not Detected on Windows 11: Step-by-Step Driver Fix Guide (2026)
- Llama 3.2 3B: Raspberry Pi 4 8GB vs RTX 3060 12GB for Local Inference
- Bridging Retro Audio: Sound Blaster Legacy to a Modern Sound BlasterX G6
- Best Raspberry Pi Accessories for Home-Lab Builds in 2026
- Steam Deck OLED vs ROG Xbox Ally: 2026 Comparison
- Silent, SD-Free Retro Storage: CompactFlash + IDE on Win98/XP
- ComfyUI on an RTX 3060 12GB: Stable Diffusion Throughput in 2026
- Intel Axes BigDL: What It Means for CPU and Arc LLM Inference
- AI-Driven Win98 Voodoo Driver Install: A Repeatable Vision-LLM Playbook for the Sound Blaster Audigy FX
- Linux Gaming Is Getting Faster: Windows APIs Hit the Kernel
- Best Sim Racing Wheel and Shifter for Beginners in 2026
- AMD Ryzen AI Halo vs NVIDIA DGX Spark: Local-AI Mini-Box Showdown
- Training an LLM in Swift, Part 1: Matrix Mult Speed
- Linux Now Boots on a Sega Genesis — Here's What That Actually Means
- RTX 5090 and Ryzen 7 9800X3D Benchmark Showdown: 2026 Performance Deep Dive
- Best SSD for Local LLM Model Storage in 2026: NVMe vs SATA
- Mistral 7B vs Mistral Small 24B: GPU Requirements Compared
- JADEPUFFER Agentic Ransomware: Why a Local AI Rig Changes Your Threat Model
- Best Mini PC for Local LLM Inference in 2026
- Best PlayStation Controller for PC Gaming in 2026
- Baidu Unlimited OCR Runs Locally: Document AI on an RTX 3060 12GB
- Building a Period-Correct 2001 GeForce 3 + Windows 98 SE Gaming Rig
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090