CS2 System Requirements & File Size

These are the baseline specs Valve lists on the Steam store page for CS2. Meeting these requirements means the game will run, but do not expect high frame rates or smooth performance:

• OS: Windows 10
• Processor: 4 hardware CPU threads - Intel Core i5-750 or higher
• Memory: 8 GB RAM
• Graphics: GPU with 1 GB VRAM or more, compatible with DirectX 11 - NVIDIA GeForce GT 730 or higher
• Storage: 85 GB available space (includes room for updates)
• Network: Broadband internet connection

At minimum specs, you should expect to play at 720p or 1080p on the lowest settings with frame rates in the 30-60fps range. This is playable for casual modes but will be a disadvantage in competitive matches where higher frame rates provide smoother input response.

For a comfortable experience at 1080p with medium-to-high settings and frame rates above 120fps, aim for these specs or better:

• OS: Windows 10 or 11
• Processor: Intel Core i5-9400F / AMD Ryzen 5 2600X or better
• Memory: 16 GB RAM
• Graphics: NVIDIA GTX 1650 / AMD RX 570 or better with 4 GB VRAM
• Storage: SSD with 85 GB available space
• Network: Broadband internet connection

An SSD is strongly recommended over a mechanical hard drive. CS2 loads maps faster, stutters less during gameplay, and generally performs more consistently when installed on solid-state storage. If you can only afford one upgrade, moving to an SSD provides the most noticeable improvement.

The CS2 installation currently occupies approximately 30-35 GB of disk space, though this fluctuates with major updates. Valve recommends having 85 GB available to account for updates, temporary files during patching, and future content additions.

The initial download size is slightly smaller than the installed size due to compression. On a standard broadband connection, expect the download to take anywhere from 30 minutes to a few hours depending on your speed.

CS2 is notably larger than CS:GO was at its peak, which typically sat around 15-20 GB. The increase comes from Source 2 engine assets -- higher-resolution textures, improved map geometry, and more detailed character models all contribute to the larger footprint. Updates are delivered incrementally, so you will not need to re-download the entire game when a patch arrives.

Counter-Strike 2 is primarily CPU-intensive, particularly at lower resolutions and competitive settings. Here is why that matters:

• Low settings shift the bottleneck: When you reduce graphical quality (which competitive players do for maximum visibility and frame rates), the GPU has less work to do. The CPU then becomes the limiting factor
• Single-thread performance matters: While CS2 does utilise multiple cores, strong single-core performance is critical for maintaining high and stable frame rates
• High resolutions stress the GPU: At 1440p or 4K with higher settings, the GPU becomes more of a factor. But most competitive players run at 1080p or lower
• RAM speed helps: Faster memory (DDR4-3200 or higher) can provide a small but measurable boost to frame rates, especially on AMD Ryzen processors

If you are building or upgrading a PC specifically for CS2, prioritise the CPU first (strong single-core performance from recent Intel or AMD generations), then pair it with a mid-range or better GPU.

If your PC meets the minimum requirements but struggles with frame rates, these adjustments can help:

• Lower resolution: Dropping from 1080p to 900p or 720p significantly reduces GPU load. Many professional players use non-native resolutions
• Reduce all settings to Low: Shadows, effects, shader detail, and anti-aliasing are the biggest performance drains. Set everything to Low for maximum frames
• Disable V-Sync: V-Sync caps your frame rate and adds input lag. Always turn it off for competitive play
• Use launch options: Commands like -novid (skip intro video) and -high (set process priority) can help. See our launch options guide for the full list
• Close background applications: Browsers, Discord overlays, and streaming software all consume CPU and RAM. Close anything non-essential before playing
• Update GPU drivers: Both NVIDIA and AMD regularly release driver updates optimised for CS2. Keep your drivers current

For a comprehensive performance tuning walkthrough, check out our FPS optimisation guide which covers in-game settings, Windows tweaks, and hardware upgrade priorities. You can also check if CS2 is free to play and learn about Mac compatibility.