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Free Items Gigabyte Z390-UD - Intel Core i3 9100F / i5 9400F CPU & Motherboard Bundle **Free 240GB Solid State

Intel Core i3-9100F 3.6GHz (4.2GHz Turbo) Quad Core or i5-9400F 2.9GHz (4.1GHz Turbo) Six Core, Gigabyte Z390 UD ATX Motherboard, Free 240GB SSD*, whilst stocks last

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Gigabyte Z390-UD - Intel Core i3 9100F / i5 9400F CPU & Motherboard Bundle **Free 240GB Solid State
 

10+ In stock

Was: £214.98 £204.98

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Gigabyte C621 Aorus Xtreme Intel C621 (LGA 3647) DDR4 Hexa Channel Motherboard

C621 AORUS XTREME has a more powerful VRM design and richer platform I/Os. It is the ultimate platform for those seeking the most advanced computing power for tasks ranging from digital content...

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Gigabyte C621 Aorus Xtreme Intel C621 (LGA 3647) DDR4 Hexa Channel Motherboard
 

Bought to order

£1,499.99

-21%
Free Items AMD 50 Bundle - Gigabyte B450 Aorus Elite & Ryzen 5 2600

Special Limited Edition AMD 50th Brithday Promotional Bundle, Gigabyte B450 Aorus Elite Gaming Motherboard, AMD Ryzen 5 2600 Six Core CPU, Discounted Price, Includes AMD 50 Game Bundle

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AMD 50 Bundle - Gigabyte B450 Aorus Elite & AMD Ryzen 5 2600
 

Out of stock

Was: £274.98 £216.98

-9%
Free Items AMD 50 Bundle - Gigabyte X470 Ultra Gaming & Ryzen 7 2700X

Special Limited Edition AMD 50th Brithday Promotional Bundle, Gigabyte X470 Aorus Ultra Gaming Motherboard, AMD Ryzen 7 2700X Eight Core CPU, Discounted Price, Includes AMD 50 Game Bundle

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AMD 50 Bundle - Gigabyte X470 Ultra Gaming & AMD Ryzen 7 2700X
 

10+ In stock

Was: £432.94 £392.94

-9%
Free Items AMD 50 Bundle - Asus ROG Strix B450-E Gaming & Ryzen 5 2600

Special Limited Edition AMD 50th Brithday Promotional Bundle, Asus ROG Strix B450-E Motherboard, AMD Ryzen 5 2600 Six Core CPU, Free 250GB SATA SSD, Includes AMD 50 Game Bundle

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AMD 50 Bundle - Asus ROG Strix B450-E Gaming & AMD Ryzen 5 2600
 

7 In stock

Was: £329.94 £299.94

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Free Items AMD 50 Bundle - Asus ROG Crosshair Hero & Ryzen 7 2700X

Special Limited Edition AMD 50th Brithday Promotional Bundle, Asus X470 Crosshair Hero Motherboard, AMD Ryzen 7 2700X Eight Core CPU, Free 250GB M.2 SSD, Includes AMD 50 Game Bundle

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AMD 50 Bundle - Asus ROG Crosshair Hero & AMD Ryzen 7 2700X
 

10+ In stock

£537.94

-9%
Intel Core i3-9100F 3.60GHz (Coffee Lake) Socket LGA1151 Processor - Retail

BX80684I39100F, 3.60GHz Clock Speed, 4.20GHz Single Core Max Turbo, 6mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty, OcUK Ships worldwide including USA.

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Intel Core i3-9100F 3.60GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

20+ In stock

Was: £98.99 £89.99

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8Pack Intel Core 9600K / 9700K / 9900K Delidded (Coffee Lake) Socket LGA1151 Processor - OEM

Delidded LGA1151 Processors, 14nm Process, Dual Channel DDR4 Controller, Integrated Iris DX12 Graphics, 1 Year Warranty

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Intel Core 9600K / 9700K / 9900K Delidded (Coffee Lake) Socket LGA1151 Processor - OEM
 

Built To Order

£336.97

Intel Core i9-9900 3.1GHz (Coffee Lake) Socket LGA1151 Processor - Retail

BX80684I99900, Hyper-Threading Technology, 3.10GHz Clock Speed, 5.0GHz Single Core Max Turbo, 16mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty

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Intel Core i9-9900 3.1GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

Pre Order

£449.99

-8%
Free Items AMD 50th Birthday Bundle: 2700X Retail & Coolermaster ML240R Liquid CPU Cooler

This bundle includes an AMD 2700X Retail processor and Coolermaster ML240R Liquid CPU Cooler, buy both together to save money and you also get AMD 50th FREE Birthday games, Division 2 Gold & War Z !

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AMD 50th Birthday Bundle: AMD 2700X Retail & Coolermaster ML240R Liquid CPU Cooler
 

10+ In stock

Was: £399.98 £364.94

-20%
AMD Bundle - Ryzen 7 2700X, Gigabyte X370 Gaming K5 *FREE Kingston 240GB SSD* *ONLINE ONLY*

AMD Ryzen 7 2700X Eight Core CPU, Gigabyte X370 Gaming K5 Motherboard, *Free Kingston 240GB Solid State Drive*

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AMD Bundle - AMD Ryzen 7 2700X, Gigabyte X370 Gaming K5 *FREE Kingston 240GB SSD* *ONLINE ONLY*
 

10+ In stock

Was: £487.93 £388.98

 
Free Items AMD Ryzen 7 Eight Core 2700X GOLD EDITION 4.35GHz (Socket AM4) Processor - Retail

YD270XBGAFA50, Eight Core with Sixteen Threads, 4.35GHz clock speed, 12nm FinFet Process, 20MB L3 Cache, Dual Channel DDR4 Controller, 3 Year Warranty

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AMD Ryzen 7 Eight Core 2700X GOLD EDITION 4.35GHz (Socket AM4) Processor - Retail
 

10+ In stock

£329.99

Intel Core i3-9100 3.60GHz (Coffee Lake) Socket LGA1151 Processor - Retail

BX80684I39100, 3.60GHz Clock Speed, 4.20GHz Single Core Max Turbo, 6mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty

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Intel Core i3-9100 3.60GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

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£124.99

Intel Core i3-9300 3.70GHz (Coffee Lake) Socket LGA1151 Processor - Retail

BX80684I39300, 3.70GHz Clock Speed, 4.30GHz Single Core Max Turbo, 8mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty

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Intel Core i3-9300 3.70GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

Pre Order

£149.99

Intel Core i3-9320 3.70GHz (Coffee Lake) Socket LGA1151 Processor - Retail

BX80684I39320, 3.70GHz Clock Speed, 4.40GHz Single Core Max Turbo, 8mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty

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Intel Core i3-9320 3.70GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

Pre Order

£158.99

Intel Core i5-9400 2.90GHz (Coffee Lake) Socket LGA1151 Processor - Retail

2.90GHz Clock Speed, 4.10GHz Single Core Max Turbo, 9mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty

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Intel Core i5-9400 2.90GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

Pre Order

£194.99

Intel Core i5-9500 3.00GHz (Coffee Lake) Socket LGA1151 Processor - Retail

BX80684I59500, 3.00GHz Clock Speed, 4.40GHz Single Core Max Turbo, 9mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty

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Intel Core i5-9500 3.00GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

Pre Order

£199.99

Intel Core i5-9600 3.10GHz (Coffee Lake) Socket LGA1151 Processor - Retail

BX80684I59600, 3.10GHz Clock Speed, 4.60GHz Single Core Max Turbo, 9mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty

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Intel Core i5-9600 3.10GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

Pre Order

£218.99

Intel Core i7-9700 3.00GHz (Coffee Lake) Socket LGA1151 Processor - Retail

BX80684I79700, 3.00GHz Clock Speed, 4.70GHz Single Core Max Turbo, 12mb Cache, 65W TDP, Dual Channel DDR4 Controller, 3 Year Warranty

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Intel Core i7-9700 3.00GHz (Coffee Lake) Socket LGA1151 Processor - Retail
 

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£338.99

Noctua NA-SCW1 Thermal Paste Cleaning Wipes - 20 pieces

Cleaning cloths for removing thermal grease, 20 towels with detergent, 15 x 12 cm packed individually

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Noctua NA-SCW1 Thermal Paste Cleaning Wipes - 20 pieces
 

16 In stock

£6.95

Noctua NT-H2 Thermal Paste (3.5g)

Thermal compound for copper and aluminum coolers, For up to 20 applications, High maximum operating temperature, Useful life of up to 5 years

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Noctua NT-H2 Thermal Paste (3.5g)
 

8 In stock

£10.99

Asus ROG Dominus Extreme Intel C621 (LGA 3647) DDR4 Hexa Channel Motherboard

LGA 3647 socket for Intel Xeon® W-3175X processor, 32 power stages, dual 24-pin, quad 8-pin, dual 6-pin 12V power connectors, Six channel memory architecture, Aquantia 10Gbps LAN, AC WIFI, EEB Sized

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Asus ROG Dominus Extreme Intel C621 (LGA 3647) DDR4 Hexa Channel Motherboard
 

8 In stock

£1,439.99

 
Intel Core Xeon W-3175X 28 Core Pro Creator Workstation Processor

Intel Core Xeon W-3175X, S 3647, Skylake-SP, 28 Core, 56 Thread, 3.0GHz - 3.8GHz, 38.50MB, 48 Lane, 255W,Box

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Intel Core Xeon W-3175X 28 Core Pro Creator Workstation Processor
 

1 In stock

£4,199.99

Processors

CPU: The Heart of Your System Build

A CPU (short for central processing unit) forms the core of your gaming PC and workstation, and makes up the electronic circuitry that implements any instructions sent by a computer program. A CPU does this by conducting the basic operations-arithmetic, control, input/output (I/O), and logical-as outlined in the instructions. The more your system demands, the more your CPU needs to perform in order to process all the complex information required to run your applications and manage your components smoothly.

Learn more about your system’s CPU-and discover the great range of processors available in our online store-with Overclockers UK, the leading marketplace for PC enthusiasts in the UK. And once you’re happy with your choice of CPU, why not check out our great range of CPU accessories, including CPU coolers, heatsinks, fans, thermal assembly paste, and much more.

Different CPUs for Different Processing Needs

Intel and AMD are the two major producers of CPUs currently available. Generally speaking, CPUs come under three categories:

Low power CPU: A low power CPU doesn’t possess the processing capabilities to handle much more than light requests. For example, the demands of word processing or surfing the internet. As such, overclockers tend not to use this kind of CPU for gaming, video editing, or operating multiple applications at once. A low power CPU is favoured, however, for its low power consumption and low heat output compared to more powerful processor units. This makes them ideal for use in smaller systems such as tablet devices or netbooks, as they usually require a long battery life and do not offer the space to house a CPU heatsink.

Desktop CPU: Desktop CPUs comprise the biggest selection of CPUs on the market. Within this category, you can find a huge range of processing power and performance to meet your requirements. Desktop CPUs are mostly used in mid-level to high-end laptops, desktop computers and tablet devices which offer more speed and power than their slower counterparts. As such, they can produce a much higher heat output, and boast multiple processor cores and perform at a much higher speed. This means that, generally, desktop CPUs demand a form of active cooling, such as a heatsink or fan, for example.

Server CPU: A server CPU is the preferred choice for users who need consistency and reliability as opposed to performance. This kind of CPU has to pass a stringent and demanding stress test during the production process in order for the manufacturer to guarantee that it will be able to perform as expected in any situation. A server CPU is intended to process more data more often than a desktop CPU; as a result it is able to correct memory errors that could impact the system stability. The increased amount of data that is transferred via a server CPU leads to a very high heat output-meaning cooling is of paramount importance for overclockers or anyone else working with this kind of CPU.

Recognising and Enhancing Performance in a CPU

A central processing unit’s performance or speed is measured according to several attributes, with two of the most important being: the clock rate (usually recorded in hertz), and the instructions per clock (IPC). These two attributes form the instructions per second (IPS) that a CPU is able to process. A computer’s processing speed is improved with multi-core processors-this refers to connecting two or more processors into a single integrated circuit. A dual core processor should, in theory, provide twice as much power as a single core processor, however, the actual performance gain is only around 50%. This is down to the less than perfect nature of the software algorithms and implementation. Adding more cores in a processor improves the workload that a CPU can manage. Once this addition has been carried out, a processor will be able to manage multiple asynchronous events, interrupts, and so on, that can have an adverse effect on a CPU when it is under pressure. Occasionally, the additional cores will take care of the same task being handled by a neighbouring core if an individual core cannot process the amount of information being sent.

Overclocked CPUs

Computer central processing units are usually overclocked by tweaking the CPU multiplier; a processor and other components are also able to be overclocked by improving the base speed of the bus clock. There are a few systems where it is possible to carry out additional tweaking of other clocks, for example, a system clock, that affect the speed of the bus clock. Again, this speed is multiplied by the processor to enable small adjustments of the final processor speed.

If you’re looking to upgrade your CPU via overclocking, here are two things to keep in mind:

Cooling: Every time you raise your chip voltage you also increase your power consumption, this significantly increases the amount of heat output from your system. Even if you already have a strong cooling system installed, you will likely need to improve it each time your heat output goes up, otherwise you run the risk of overheating your hardware and other components and causing them to breakdown or become damaged. Common methods of cooling your workstation and overclocked CPU include:

  • Water cooling systems which redirect waste heat to a radiator
  • Thermoelectric cooling devices-these are particularly good for TDP processors manufactured by Intel and AMD at the turn of the 21st century
  • Phase transition, which adopts the cooling system used in refrigerators
  • Liquid nitrogen, liquid helium and dry ice; however these are only used in extreme situations and not in common, everyday use.

CPU locking by manufacturers: This refers to the act of permanently setting the clock multiplier of a CPU. Early editions of AMD CPU models are unlocked, but locked in more recent editions. Virtually all CPUs manufactured by Intel are locked, and the latest models are highly resistant to unlocking. This move was intended to deter overclockers from working with Intel processors.

Whatever CPU upgrade you’re looking to create for yourself, explore the fantastic range of components and accessories on offer at Overclockers UK-you’ll find great products, tips, and a thriving, helpful community to ensure you build the workstation you want.

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