Enthusiast computing

As well as the computing components themselves, case and related accessories often form a target for enthusiast attention, for functional and aesthetic reasons.

• Computer cases, especially of gaming computers, are often selected with care, for their aesthetic and functional value. Functionally, the case must be able to provide cooling for high-end, possibly overclocked components, and have room for expansion and customization. Aesthetically, case modding usually includes features that show off the creator's intent: clear sides to reveal the internal components and layout, which may be adorned with LEDs, images on the graphics cards or power supply units.
• Computer power supplies may be selected for very high quality electrical stability and performance, so that the high speed electronics reliant on them will not suffer from irregularities or disruption, and so that high power processors and graphics cards can be properly supplied with the often high levels of current needed. Power supply reviews for enthusiasts may, for example, take apart the item to identify the exact manufacturers of components, the types and sources of capacitors or power regulation circuitry involved, the quality of PCB soldering, and the calibre of any wiring.
• Cooling systems may receive careful attention, both to ensure high quality airflow and reduced operating temperatures under heavy workloads or intense activity, to support overclocking, and as part of quiet computing as well.
• Water cooling , in which a water is used to cool a part of the computer, is becoming cheaper and more available. While much more expensive than an ordinary fan, it transfers heat more efficiently and is generally quieter. As building a computer becomes more of an enthusiast activity, due to the rise of tablets, laptops, and cell phones, more cases appeal to water cooling setups.
• Quiet computing is a specialist aspect of enthusiast activity, whereby the user aims to ensure the computer runs very quietly, with the goal of enjoyable ambience. Fans, hard drives, and any other noisy components may be selected for their acoustic properties, and then mounted in ways that dampen vibration and provide acoustic isolation.

Intel Core 2 Quad Q6600

The CPU is mainly responsible for computing physics, AI and central game processes. Modern gaming PCs use high-end processors. With the rise of multi-threaded games, multi-core processor setups have become more necessary, providing better performance by offloading work to all available cores at once. Furthermore, an ample amount of L2 Cache within the CPU, generally 4 MB or more, is recommended to reap the benefits of even faster game performance. In addition, a gaming processor should be capable of running at least the SSE3 instruction set extension, which is available with CPUs produced since at least 2006.[4]

Gaming PCs use hardware accelerated video cards which offer high-end rasterisation-based rendering/image quality. A graphics card is the most important component, being the main determining factor of the capabilities of a gaming PC.[5] Memory capacity on 3D cards is usually at least 256 MB to 12 GB. The amount of video RAM is more important while gaming in higher resolution or using high resolution textures, and/or with extensive modding. Having at least 2GB to 4GB of VRAM or more is suggested for today's standards when gaming. The type of memory used, however, is an important factor. The current VRAM standards are GDDR5, GDDR5X, GDDR6, and HBM2. Modern graphics cards use the PCI Express expansion slot. Two or more graphics cards can be used simultaneously on motherboards supporting SLI or ATI CrossFire technology, for nVidia and AMD based cards respectively. Both technologies allow for between two and four graphics cards, although nVidia recommends only using multiples of the same model, to be used in unison to process and render an image.[6]

A high-end graphics card will also use more electricity, or have a higher power draw, than a lower-end card. This power draw only increases as the number of graphics cards increases, adding another cost to a high-end computer. Overclocking a graphics card, or multiple, also adds additional power draw. However, as the number of graphics cards increases, the performance gains by adding another graphics card decreases significantly due to the complexity of more than two GPUs communicating to each other in an efficient way. This is another example of depreciating returns.

A well-made, top-class video card should at least adequately play all the new games for at least two years, though hardcore gamers will eagerly spend the money to upgrade more often. To keep up with the technology while spending the least amount of money, waiting two years to upgrade is the most accepted compromise." - Microsoft.com[7]

While physics cards are now available, compatibility and performance increases are still debated. Some players have experienced performance downgrades in GRAW,[8] one of the few games currently available that take advantage of additional physics hardware. Graphics card manufacturers plan on including PPUs on their chipsets and also adding a slot for a third graphics card (in addition to the usual 2 slots for SLI or Crossfire setups) to act as a PPU.[9]

At the moment, the cards are expensive and neither widely used nor widely supported in games. Recently Nvidia cards support the physics calculations that dedicated physics cards were made for. Nvidia physics software is known as PhysX.

A DDR4 DRAM module, in this case a Corsair Dominator Platinum module.

Random access memory, or RAM, acts as a cache for non-graphical resources that games use. Enthusiasts will often purchase the fastest RAM, which has a lower latency, thus offering negligible performance increases in most cases. For gaming, a higher frequency of memory than would be necessary for an average computer user can offer some benefits. This has led to certain motherboards supporting RAM overclocking, with the new XMP standard. As RAM frequency is increased, however, the stability of the system decreases, increasing the risk of random computer shutdowns.

8 GB is usually the recommended amount of memory for gaming computers, as some 64-bit games can use over 4 GB of RAM.

The current maximum amount supported on consumer hardware is 128 GB (for quad-channel configuration), with 8 slots on some LGA 2066 motherboards, each slot supporting up to a 16 GB DIMM.

Samsung 960 EVO M.2 SSD

In gaming PCs, it is desirable to have fast hard drives, which will generally result in shorter loading times in games. For this reason, some gaming PCs use certain RAID setups to lower latency and increase throughput to mass storage.[10] Since the space taken up by games is nominal compared to the total availability on modern hard drives, speed is preferred over capacity.

Recently, solid-state drives have become popular, which offer significantly higher speeds than magnetic hard drives. Though originally more expensive, prices have significantly dropped. The performance of SSDs is now considered a minimum, and some consider them necessary even in budget PCs.

Currently M.2 drives have become the newest form of lower-cost fast storage. These drives connect straight into the motherboard, allowing for extremely fast data read and write speed. These drives are very fast and most NVME M.2 drives easily pass the speed of SATA SSDs.

While sound hardware is usually integrated onto modern gaming motherboards, gaming PCs can also be equipped with a dedicated sound card and speakers in a 5.1 or 7.1 surround sound configuration. A speaker setup or a set of quality headphones is required to enjoy the advanced sound found in most modern computer games.[11] Sound cards have hardware accelerated technologies, such as EAX. The Sound Blaster X-Fi, with its Fatal1ty editions having 64 MB of onboard RAM (unmatched for a sound card), targets enthusiasts as its main demographic, having a dedicated "gaming mode".[12]

A fast response time and high refresh rate is desired in order to display smooth motion. A framerate of 60 frames per second (FPS) is generally the minimum acceptable framerate in a video game for enthusiasts, with some enthusiasts preferring 144 FPS or in some cases 165 FPS, to match the refresh rate of their monitor (144 Hz or 165 Hz, respectively). Some gaming monitors can be overclocked to achieve higher refresh rates. Gaming with multiple monitors is possible, but this is not a feature supported by all games. Many players game using three monitors, which increases the load on the graphics card threefold.

Some monitors are designed exclusively for gamers, featuring higher refresh rates and improved response times at the expense of a lower resolution.[13] E-sports, or competitive gamers, often favor higher framerates at the expense of reduced color accuracy, preferring TN panels over IPS panels.

There are many hardware interfaces designed specifically for gaming. Such interfaces include keyboards and mice built for gaming (these typically include additional keys or buttons for game-related functions as well as LCD screens, higher sensitivity (for mice), better adherence (for keyboards and mice) and less/more friction depending on the user's needs[14]), joysticks, gamepads, steering wheels, PC-compatible airplane gauges and panels,[15] etc. A keyboard and mouse is the preferred control method for most games, giving the best speed and accuracy. Touch screens are rarely used for PC gaming at this point. "Haptic feedback" commonly known as force feedback, allows for greater immersion in games played. While there are no keyboards that support haptic feedback, some mice and most forms of game controllers do.

A screenshot from CPU-Z, that shows an AMD Phenom 8450 CPU overclocked to over 2.8 GHz from its stock speed of 2.1 GHz.

Overclocking is used by enthusiasts to achieve component or system performance that exceeds the manufacturer's officially stated specification. Overclocking is a significant part of enthusiast culture, with popular and widely respected websites such as Anandtech and Tom's Hardware often including overclocking as part of a review. Hardware manufacturers release high-end components that facilitate overclocking. Examples include CPUs with unlocked multipliers, oversized heatsinks or water cooling, and motherboards with user-configurable voltages and incremental bus speeds. "Professional" overclockers commonly overclock only one core of processors, typically older AMD CPUs, to obtain CPU speeds well beyond the ability of the official configuration.

Some system builders and part manufacturers now offer factory overclocking, which is covered under warranty. Alternatively a manufacturer or user may seek individual components that overclock, in order to buy a cheaper product that will prove to run to a higher quality product's standard.

There are significant hazards to be aware of when overclocking a computer. At a mundane level some components will not work under too high a demand, and the computer will not work until overclocking is reduced or disabled entirely. More seriously, some components may be damaged or destroyed by increased heat or voltages routinely caused by overclocking if the user is reckless or uninformed, and therefore caution and some level of prior understanding is needed.

In particular, overclocked CPUs (central processing units) generally run hotter than normal, and components such as CPUs, memory controllers, graphics cards and RAM may require higher voltages to produce higher performance. The higher voltage results in increased heat and can stress the electrical channels of the components. This can cause damage, degradation, or critical failure.

While most components usually see marginal or barely perceptible benefits, CPUs see much larger performance improvements, especially when using a high-end cooling solution. However, CPUs are also the most complex component to overlock, making it significantly harder for newcomers and beginners to achieve good results.

GPUs (Graphics processing units) on the other hand, while able to be overclocked, rarely see significant performance gains, while results can be wildly inconsistent. "The Silicon lottery" is a term used by overclocking enthusiasts to describe components that turned out better during the manufacturing process, therefore making them more durable (less commonly, this can also be the case with CPUs), capable of handling the pressure of overclocking better, resulting in more overclocking headroom. GPUs are the most popular component to overclock despite downsides.

In terms of complexity, RAM (Random-access memory) is closely tied with CPUs, but performance gains are not as significant. In particular, DDR4 SDRAM is more prominent compared to its predecessors DDR3 and DDR2. However, even though higher speeds aren't usually very noticeable in most applications there are a few scenarios where overclocking RAM is legitimately important. One such scenario is with AMD Accelerated Processing Units where the CPU and GPU are combined in one chip, meaning they have to share memory resources. Typically, a GPU has its own RAM that is much faster than desktop DDR3 or DDR4 SDRAM, but with an APU it has to work with slower desktop RAM. In this particular scenario, overclocking RAM is highly recommended, giving meaningful performance increases.