GeekaPC 'Obsidian' Gaming PC
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The GeekaPC 'Obsidian' is top-end gaming PC that makes no sacrifices when it comes to performance and aesthetic. Housed inside the Lian Li O11 Dynamic EVO RGB, this gorgeous PC sets itself apart when it comes to design, its shimmering glass akin to dark igneous rock, with vast lighting shining through in various unique patterns and colours. Equipped with an RTX 5080, RTX 5090, or RX 9070 XT, this powerhouse is built to offer substantial 4K performance without even breaking a sweat!

As the brains of this volcanic system, handling all of your everyday tasks and workloads is the AMD Ryzen 7 9800X3D. This is one of the most powerful gaming CPUs, equipped with AMD's almighty 3D V-Cache designed to uplift performance in your favourite games. This CPU features eight cores and sixteen threads at a whopping boost clock speed of 5.2GHz, a perfect pairing for any of the three cards available!

Ensuring the GeekaPC 'Obsidian' stays cool and doesn't break out into an eruption is the Lian Li Hydroshift II LCD-S 360N, a unique liquid cooler that hides all of the tubing and wiring, while offering solid thermal capabilities designed to keep top-end CPUs like the Ryzen 7 9800X3D plenty cool.

Lian Li's O11 Dynamic EVO RGB is the chassis providing a home for all of the components in the 'Obsidian'. This large case offers a dual-glass panel design, offering an unhindered view into the build It offers an RGB strip on the front which can be customised by utilising the buttons on the back to change the mode or colour of the strip itself.

For the RAM, we've stuck with a firm favourite across many of our builds, the Kingston Fury Beast RGB kit. This is a powerful and reliable RAM kit and provides gamers with additional RGB lighting. Those looking to increase the performance of this build even further also have the option to upgrade from 32GB to 64GB.
On the storage front, the Frame PC build is equipped with a Lexar NQ790/EQ790 as standard, providing read speeds up to 7100MB/s, and writes up to 6000MB/s. If you're running out of space for your favourite games, you also have the option to increase the capacity from 1TB up to 2TB and 4TB for those that need plenty of storage room.
Providing power across the board is Corsair's 'RM' series, with an 850W unit for the RTX 5080 and RX 9070 XT, and a 1000W unit for the RTX 5090. These series of power supplies are incredibly reliable, offer low noise levels, and feature Cybenetics Gold-rated efficiency.
CPU (Processor): AMD Ryzen 7 9800X3D
The Ryzen 7 9800X3D is a high-performance gaming processor featuring 8 cores and 16 threads based on the Zen 5 architecture with 3D V-Cache technology. With a 4.7 GHz base clock and 5.2 GHz boost clock, it delivers exceptional gaming performance while maintaining a 120W TDP. This processor supports DDR5 memory and the AM5 socket for next-generation desktop compatibility.
- Cores / Threads
8 Cores / 16 Threads
- Base / Boost Clock
4.7 / 5.2 GHz
- Socket
AM5
- Default TDP
120W
| CPU | AMD Ryzen 5 7600 | AMD Ryzen 5 9600X | AMD Ryzen 7 9700X | AMD Ryzen 7 9800X3D In Build |
|---|---|---|---|---|
| Architecture | Zen 4 | Zen 5 | Zen 5 | Zen 5 (3D V-Cache) |
| C/T | 6 / 12 | 6 / 12 | 8 / 16 | 8 / 16 |
| Base / Boost | 3.8 / 5.1 GHz | 3.9 / 5.4 GHz | 3.8 / 5.5 GHz | 4.7 / 5.2 GHz |
| L3 Cache | 32MB | 32MB | 32MB | 96MB |
| Socket | AM5 | AM5 | AM5 | AM5 |
| TDP | 65W | 65W | 65W | 120W |
CPU Cooler: Lian Li HydroShift II LCD-S 360TL
A premium 360mm AIO featuring three UNI FAN TL Wireless ARGB fans and a built-in LCD display on the pump head. Rated for 300W+ TDP and finished in all-black, it's a statement piece for high-end showcase builds.
- Type
360mm AIO
- Fan Setup
3 × 120mm UNI FAN TL Wireless ARGB
- TDP Rating
300W+
- Finish
All-Black
Motherboard: Gigabyte X870 Eagle WiFi7
A step up from the B850, the X870 Eagle brings dual USB4 ports as standard — great for high-speed peripherals and external storage. Wi-Fi 7 and a strong feature set make this a brilliant mid-range option for Ryzen builds.
- Chipset
AMD X870
- CPU Socket
AM5
- Wireless
Wi-Fi 7 + Bluetooth 5.4
- Memory Profile
DDR5 with AMD EXPO support (up to 8200 MT/s)
Rear I/O Panel
RAM: Corsair Vengeance DDR5 RGB 32GB 6000MHz CL36
A popular DDR5 kit that hits the sweet spot for AMD Ryzen builds — 6000 MT/s is widely regarded as the ideal speed for the AM5 platform and the ten-zone RGB lighting looks great through any windowed case.
- Memory Type
DDR5
- Speed
6000 MT/s
- Latency
CL36
- Capacity Layout
32GB Kit (2 × 16GB)
SSD: Biwin Black Opal NV7400
The Biwin Black Opal NV7400 is an excellent addition to any system. With sequential read speeds up to 7400 MB/s and write speeds up to 6500 MB/s, it's fast, reliable, and resilient for high-framerate gaming.
- Form Factor
M.2 2280 NVMe SSD
- Interface
PCIe 4.0 x4
- Read Speed
Up to 7400 MB/s
- Capacity
1TB, 2TB, or 4TB
GPU (Graphics Card): Choose Your Option
The GeekaPC Obsidian is available with 3 GPU options to suit your budget and resolution targets. These GPUs perform excellent at 4K and even beyond.
- Target Resolution
4K
- API Support
DirectX 12 Ultimate, Vulkan
- Shader Processors
CUDA Cores (NVIDIA) / Stream Processors (AMD)
- PCIe Interface
PCIe 5.0 x16
GPU Options
Case: Lian Li O11 Dynamic EVO RGB
The O11 Dynamic EVO RGB is one of the most popular showcase cases on the market, now with dual ARGB light strips and seven pre-installed Uni Fan SL-Infinity fans. The modular, reversible chassis and excellent water cooling support have made this a firm favourite for enthusiast builds.
- Chassis Type
Mid-Tower ATX / E-ATX
- Pre-installed Fans
7× Uni Fan SL-Infinity 120mm RGB
- Radiator Support
420mm top, 360mm side, 360mm bottom
- Fan Capacity
Up to 10 fans
Lian Li O11 Dynamic EVO RGB Case Overview
Front I/O
Exterior Dimensions
- Height (H)465 mm (18.31 in)
- Width (W)285 mm (11.22 in)
- Depth (D)459 mm (18.07 in)
PSU: Corsair RM850e
The go-to choice for builds with power-hungry components like the RTX 5080 or RX 9070 XT. 850W of fully modular, 80+ Gold power with PCIe 5.1 support. With the RTX 5090 variants, customers will be provided with an RM1000e for additional power needs.
- Wattage
850W
- Efficiency
80+ Gold
- Modular
Fully Modular
- Standard
ATX 3.1 / PCIe 5.1
Operating System: Windows 11
All of our systems come preinstalled with an activated copy of Windows 11 set to the 'Out of Box Experience'. This allows you to set the PC back up to your liking.
- Edition
Windows 11
- License
Preinstalled and Activated
- Setup State
Out of Box Experience
- Architecture
64-bit Operating System
Gaming Benchmarks
See how each variant of the GeekaPC Obsidian performs in a range of titles.
The below frame rates give you a good indication of how well this system will perform in a wide variety of titles at 4K. Please note, your exact milage will vary depending on a number of factors and the below figures are intended as a guide!
Cyberpunk 2077
High Settings @ 4K
Hogwarts Legacy
High Settings @ 4K
Apex Legends
High Settings @ 4K
Call of Duty: Black Ops 7
High Settings @ 4K
















