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Do you want to build your own powerful gaming PC, a powerful workstation, or a reliable office PC and have to no idea what to choose from the enormous range of hardware available? Read on for some handy tips on how to choose the right components. To make things even clearer, we will also show you some examples of PC systems built with hardware for specific purposes.

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What Hardware Do I Need to Build My Computer?

A full-featured PC consists of a wide range of hardware. Not sure which components you need? The basic PC parts are a motherboard equipped with a processor, RAM, and a graphics card. All this is then inserted into a PC case with a PSU, or you can buy a power supply unit separately. Then add a hard drive for your data. Depending on what you need, you can also purchase a number of additional accessories for your new computer.

Hardware - Motherboard

The motherboard is the most important part of any PC and basically the foundation for all the other components. Pay extra attention to the type of socket on the motherboard, as the socket determines what processors you will be able to install. Motherboards are available in several different formats:

  • eATX is designed for high-end PC systems with multiple graphics cards.
  • ATX is great for powerful gaming computers and workstations.
  • mATX is suitable for low-cost office PCs and multimedia computers.
  • Mini ITX is recommended for compact office and HTPC computers or Media Centre PCs - they are suitable for multimedia and light, non-demanding applications.

Hardware - Processor

The processor is the brain of the whole computer. Its job is to perform the necessary computational tasks. When building a PC using individual PC parts, you need to choose a processor socket compatible with your motherboard. Depending on the purpose of your new PC, you may also have to consider the number of CPU cores.

  • 2-core processors are suitable for low-cost office assemblies.
  • 4-core CPUs are good for playing games and working with graphics programs.
  • 6-8 core processors are designed for work with demanding applications and playing the latest, most technically challenging games.
  • 8 and multi-core processors are designed primarily for powerful server systems and dedicated computing machines.

Hardware - RAM

RAM is the kind of hardware that supports the processor with computing tasks. Its capacity determines how many operations the operating system is capable of performing at the same time. So, how much RAM do you need?

  • 4GB of RAM is the minimum baseline for most operating systems today, but we recommend that you get at least 8GB to accommodate various modern applications and tasks.
  • 8GB of memory is also sufficient for more powerful office and multimedia PCs.
  • 16GB or more should be your choice if you are buying a workstation or a gaming computer.

i

DDR3 or DDR4? For low-end or mid-range systems, we recommend installing DDR3 memory modules; if you want to have a powerful, high-performance PC, make sure to choose DDR4. Before buying, always check the type of memory supported by your motherboard and processor to avoid any unpleasant surprises later on.

Hardware - Graphics Card

The graphics card is a component that is a must for any gaming PC, but it can also be used in workstations, including powerful office and multimedia PCs. The cards can be divided into four categories, according to their designation:

  • Multimedia graphics cards can handle less demanding tasks, such as watching movies and streaming high-definition videos, playing casual games, and browsing image-heavy websites.
  • Gaming graphics cards are suitable for Full HD gaming or video editing.
  • High-end GPUs are the best what today’s GPU market can offer and can handle demanding 4K games.
  • Professional graphics cards are designed for powerful workstations and are optimised for CAD programs. Despite their high performance, they aren’t particularly well-suited for gaming.

You don’t need anything fancy if you plan to build a PC purely for standard office work. A graphics card integrated on the motherboard or processor will be enough.

Hardware - Hard Drive

Hard drives are PC parts used to store and read data. The main two categories you will encounter are a classic HDD and a fast SSD.

  • For office and multimedia PCs, you should get a classic hard drive that can accommodate a large amount of data. Compared to SSDs, this type is considerably slower.
  • Workstations and gaming PCs work well with a combination of a fast SSD for the operating system and applications and a large HDD to store your files.

High-capacity SSD are also available. Unfortunately, they are still quite expensive.

Hardware - Sound Card

Sound cards are PC parts designed for users who like to listen to music in high quality. In most cases, however, an integrated sound card will be enough - these integrated cards are usually 8-channel. Music and audio enthusiasts should consider getting a powerful sound card, suitable for work with various audio software and gaming.

PC Case

When choosing a PC case, you must choose one with an interior large enough to fit all the required PC parts. PC cases can be divided into several categories:

  • Big Tower - as the name suggests, this is the largest type, suitable for high-performance, high-end PC systems. These cases have plenty of room for future expansion, water cooling, and several fans.
  • Midi Tower - the case you want for your ATX motherboard. This type is suitable for most gaming PCs and workstations.
  • Mini Tower - suitable for mATX motherboards; ideal for low-cost office and multimedia PCs.
  • Mini ITX and HTPC - these are designed for MITX motherboards and are suitable for HTPC assemblies.

Some computer cases come with the PSU already included. With others, they need to be purchased separately.

Hardware - Power Supply

The PSU should be selected with respect to the overall performance of other hardware in the system you are building. You can use this  power supply calculator to calculate the power draw of your new PC. For a modest office system, you will need a PSU with a performance of up to 350W; if you are building a demanding gaming PC or a workstation, make sure to choose an 800W PSU or higher.

Hardware - Cooling

The cooling system maintains the optimum working temperature of hardware even when your PC is under a heavy load. Unless you are building a gaming PC or a powerful workstation, you can settle for the basic cooling you get with your other PC parts. For powerful workstations and high-end gaming computers, however, you should probably consider purchasing some extra powerful fans or even a water cooling system – the most effective PC cooling type available.

PC Assembly Examples

If you are looking for some tips and ideas about specific PC types, check out our custom-built Alza PC assemblies with different components.

  1. Alza GameBox are powerful PCs designed for passionate gamers.
  2. Professional Alza PC workstations are designed for work, streaming, or video editing.
  3. Reliable Alza Office PCs are business-oriented computers for everyday office work and for a reasonable price.
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4,119 Results
GIGABYTE Radeon RX 7700 XT GAMING OC 12G - Graphics Card
5.0 3×
Add to PC configurator
GIGABYTE Radeon RX 7700 XT GAMING OC 12G
Graphics Card - 12GB GDDR6 (18000MHz), AMD Radeon RDNA 3.0 (Navi 32, 1900 MHz), Boost 2599 MHz, PCI Express x16 4.0 , 192Bit, HDMI 2.1 and DisplayPort 2.1
+Gift Promo Electronic Key pro vybrané VGA AMD Radeon, pro získání dvou ze čtyř her - Avatar: Frontiers of Pandora, Starfield, with a value of 79.90 €
416.90 €
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Corsair 64GB KIT DDR4 3200MHz CL16 Vengeance LPX black - RAM
4.4 10×
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Corsair 64GB KIT DDR4 3200MHz CL16 Vengeance LPX black
RAM - 2x32GB, PC4-25600, CL16-20-20-38, voltage: 1.35V, Low Profile, passive cooling and XMP 2,0
144.90 €
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ASUS GeForce GT1030-2G-BRK - Graphics Card
4.4 13×
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ASUS GeForce GT1030-2G-BRK
Graphics Card - 2GB GDDR5 (6008MHz), NVIDIA GeForce Pascal (GP108, 1228 MHz), Boost 1468 MHz, PCI Express x16 3.0, 64Bit, DisplayPort and HDMI
91.90 €
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Order Code: ECGT1030c3
Seagate IronWolf Pro 18TB - Hard Drive
4.5 2×
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Seagate IronWolf Pro 18TB
Hard Drive - 3,5", SATA III, 256MB cache, 7200RPM, For computers, Data storage and Internal
Amazing Deal
395.90 € Save 57.12 €
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Order Code: FP986a1i
GIGABYTE AORUS P850W 80+ GOLD Modular - PC Power Supply
4.7 39×
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GIGABYTE AORUS P850W 80+ GOLD Modular
PC Power Supply - 850W, ATX, 80 PLUS Gold, efficiency of 90%, 6 piece(s) PCIe (8-pin / 6+2-pin), 8 × SATA, detachable cables, active PFC, thermal speed control, power switch and zero RPM mode, 135mm fan, full modular, depth of 160mm
129.90 €
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GIGABYTE B550I AORUS PRO AX - Motherboard
4.3 9×
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GIGABYTE B550I AORUS PRO AX
Motherboard - AMD B550, AMD AM4 socket, 1× PCIe x16, 2× DDR4 5300MHz (OC), 4× SATA III, 2× M.2, USB 3.2 Gen 2, USB-C, RJ-45 (LAN) 2,5Gbps, HDMI, DisplayPort, 8ch audio, form factor: mITX (Mini ITX)
182.90 €
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Order Code: AGb550iapa
GameMax Dark Hanger / H605-TR - PC Case
4.0 28×
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GameMax Dark Hanger / H605-TR
PC Case - mATX (Micro ATX) and mITX (Mini ITX), 2× 3,5" slot(s), 2× 2,5" slot(s), USB 2.0, USB 3.2 Gen 1, Headphones and Microphone, 1x120mm ARGB, max. heat sink height: 155mm, max. graphics card length: 340mm, without power supply, side panel made of tempered glass
39.90 €
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Order Code: gamax015
Verbatim VI550 S3 2.5" SSD 128GB - SSD
4.7 504×
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Verbatim VI550 S3 2.5" SSD 128GB
SSD 2,5", SATA III, 3D NAND, theoretical lifespan 75TBW
15.90 €
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Order Code: DY251a1
GIGABYTE GeForce GT 710 2GB - Graphics Card
4.7 43×
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GIGABYTE GeForce GT 710 2GB
Graphics Card - 2GB GDDR5 (5010MHz), NVIDIA GeForce Keppler 2.0 (GK208B, 954 MHz), PCI Express x8, 64Bit, DVI-D
56.90 €
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Order Code: EGG710a2
Raspberry Pi 4 Model B - 2GB RAM - Mini PC
4.9 64×
Raspberry Pi 4 Model B - 2GB RAM
Mini PC ,
75.90 €
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TP-LINK Archer T2U Nano - WiFi USB Adapter
4.4 191×
TP-LINK Archer T2U Nano
WiFi USB Adapter - Nano 802.11a/b/g/n/ac up to 600Mb/sec, Dual-Band (433Mb/sec on 5GHz + 200Mb/sec on 2.4GHz), USB 2.0
11.90 €
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Order Code: TP613e
Seagate BarraCuda Pro Laptop 1TB - Hard Drive
4.7 69×
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Seagate BarraCuda Pro Laptop 1TB
Hard Drive - 2,5", SATA III, 128MB cache, 7200RPM, For computers, For laptops, Suitable for playing games and Internal
Great price
67.90 €
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Order Code: FX196d23
MSI GeForce RTX 4060 GAMING X 8G - Graphics Card
4.9 30×
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MSI GeForce RTX 4060 GAMING X 8G
Graphics Card - 8GB GDDR6 (17000MHz), NVIDIA GeForce Ada Lovelace (AD107, 1830 MHz), Boost 2610 MHz, PCI Express x16 4.0 , 128Bit, DisplayPort 1.4a and HDMI 2.1a
Great price
349.90 € Save 9.31 €
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Order Code: EFr4060gx1
MSI GeForce RTX 4090 SUPRIM LIQUID X 24G - Graphics Card Free delivery
to Alza branch
5.0 9×
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MSI GeForce RTX 4090 SUPRIM LIQUID X 24G
Graphics Card - 24GB GDDR6X (21200MHz), NVIDIA GeForce Ada Lovelace (AD102, 2235 MHz), Boost 2640 MHz, PCI Express x16 4.0 , 384Bit, DisplayPort 1.4a and HDMI 2.1
2,159 €
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Order Code: EFr4090slx1
be quiet! Pure Base 500DX White - PC Case
Variants
4.8 122×
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be quiet! Pure Base 500DX White
PC Case - ATX, mATX (Micro ATX) and mITX (Mini ITX), 2× 3,5" slot(s), 5× 2,5" slot(s), USB 3.2 Gen 1, USB-C, Headphones, Microphone and USB 3.2 Gen 2, 3x140mm, max. heat sink height: 190mm, max. graphics card length: 369mm, without power supply, side panel made of tempered glass
118.90 €
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Order Code: BGpb500dxw
GIGABYTE B550 GAMING X V2 - Motherboard
4.7 77×
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GIGABYTE B550 GAMING X V2
Motherboard - AMD B550, AMD AM4 socket, 2× PCIe x16, 3× PCIe x1, 4× DDR4 4733MHz (OC), 4× SATA III, 2× M.2, USB 3.2 Gen 2, RJ-45 (LAN) 1Gbps, HDMI, DVI, 8ch audio, form factor: ATX
111.90 €
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Order Code: AGb550g1
ASUS PRIME A520M-K - Motherboard
4.3 12×
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ASUS PRIME A520M-K
Motherboard - AMD A520, AMD AM4 socket, PCI Express 3.0, 1× PCIe x16, 2× PCIe x1, 2× DDR4 4600MHz (OC), 4× SATA III, 1× M.2, RJ-45 (LAN) 1Gbps, HDMI, VGA, 8ch audio, form factor: mATX (Micro ATX)
62.90 €
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Order Code: ACa520mk
ARCTIC P12 Value Pack - PC Fan
4.8 37×
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ARCTIC P12 Value Pack
PC Fan - size: 120 × 25mm, 1800 RPM, 12 V, maximum noise level of up to 22,5 dB, 3pin
20.90 €
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Order Code: CB211d6z
G.SKILL 64GB KIT DDR4 3200MHz CL16 RipjawsV - RAM
5.0 3×
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G.SKILL 64GB KIT DDR4 3200MHz CL16 RipjawsV
RAM - 2x32GB, PC4-25600, CL16-18-18-38, voltage: 1.35V, Unbuffered
159.90 €
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Order Code: GSKILL0043
Noctua NF-A4x10 FLX - PC Fan
4.8 133×
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Noctua NF-A4x10 FLX
PC Fan - size: 40 × 10mm, 4500 RPM, 12 V, maximum noise level of up to 17,9 dB, 3pin
15.90 €
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Order Code: CT255v4
MSI GeForce RTX 4070 GAMING X SLIM 12G - Graphics Card
4.7 6×
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MSI GeForce RTX 4070 GAMING X SLIM 12G
Graphics Card - 12GB GDDR6X (21000MHz), NVIDIA GeForce Ada Lovelace (AD104, 1920 MHz), Boost 2625 MHz, PCI Express x16 4.0 , 192Bit, DisplayPort 1.4a and HDMI 2.1a
579 €
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Order Code: EFr4070gxs1
Elgato HD60 X - Recording Device
4.9 16×
Elgato HD60 X
Recording Device for recording video from a gaming console or computer, up to 4K at 60fps or 1080p at 240fps, HDR10
178.90 €
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Order Code: ELGHK3a5
Intel Core i5-12600K + ASUS PRIME Z690-P D4-CSM - Set
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Intel Core i5-12600K + ASUS PRIME Z690-P D4-CSM
Set
316.90 €
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Order Code: BUNi5B12600k
G.SKILL 64GB KIT DDR4 4000MHz CL18 RipjawsV - RAM
4.4 8×
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G.SKILL 64GB KIT DDR4 4000MHz CL18 RipjawsV
RAM - 2x32GB, PC4-32000, CL18-22-22-42, voltage: 1.4V, passive cooling, Unbuffered and XMP 2,0
191.90 €
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In stock 4 pcs
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Order Code: GSKILL0047
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