Upgrades Information

Power Supply Choices

The power station behind a computer. Unfortunately, just like cases, it is often a neglected part when it comes to building a PC and is a massive corner cutting technique for the majority of computer manufacturers and system builders . Thankfully that is not the case here at UKGC, unlike our competitors, we use the best there is out there. If a power supply fails it can, and often does, take other components with it which is why we are so dedicated to making sure only the right power supplies go into our PC's. Corsair make the best power supplies, and have done for many years and are that confident they can offer great warranties like 3 years on the CX range and a whopping 5 years on the RM range - No other brand comes near this level.

Essentially with all our systems we have done all the hard work in choosing suitable power supplies for our systems and have ensured you can’t choose any upgrades that will be incompatible, so you need not worry, however if you are interested in the science behind it all and how other power supplies and other computer manufacturers can be potentially ripping you off then read on.

Exactly how good a power supply is, is mainly defined by 2 numbers - the Wattage (W) and the Ampere (Amps/A) available on the 12V rail. Many people think that the wattage is the only important number which is in fact simply not true; the 12v ampage is just as important and in our opinion more important.

Starting with wattage, you may think the more the better and to a certain extent you are right however this system is massively flawed as most manufacturers say a PSU is a certain wattage but it is in fact much lower than they advertise. If you’re lucky they will show a wattage spec with a "peak" wattage which means the power supply is capable of getting to that wattage but it will never be able to sustain a peak wattage - This "peak" rating is a good giveaway the PSU is not going to get anywhere near the advertised wattage. A budget brand, house brand or unbranded power supply may say its 700W but in reality, and is often the case, is only capable of sustaining of half of that output resulting in only 350W!

It is for this reason the wattage rating of as power supply can be massively inaccurate - The video below highlights this issue. This is why the Ampage of a 12V rail is far more accurate than the wattage and should be highlighted. A "Rail" is a power path within a certain supply which supplies a single voltage. A power supply typically has multiple rails that each power certain parts such as USB ports, PSU ports, motherboard logic chips, RAM, hard drives, CPUs and graphics cards. The important power hungry and power sensitive devices which include the CPU, graphics card, fans, RAM are all powered by the 12V Rail which is why it is only the 12V rail we are interested in rather than the 3.3V or 5V rail. Compare the Ampage of the unbranded/house brand/cheap power supply to a good quality PSU and you will see that the Quality power supply has a much higher Ampage despite the wattage being advertised as being greater. Feeding any component with fewer amps than it requires will starve it of power, resulting in faults and eventually total failure which usually comes to attention in the form or sparks and flames and a completely non working computer. Any manufacturer that does not publish the 12V Amp rail details will almost certainly be hiding the spec, and for this reason we recommend you avoid this kind of power supply.

Should you be interested in the science behind a power supply you can read more information in our How to choose a power supply guide.

The next rule of choosing a PSU is don’t push your luck! If you plan on popping in a meaty graphics card, extra hard drives and a couple of DVD drives then upgrade the power supply! Always have more than you need, which will not only give you a 'safety barrier' but also room to upgrade.

Just in case you’re not quite convinced about budget and below par PSUs check out this video, scary huh?

 

 

Corsair CX450 450W

CX Series power supply units provide modern power supply technologies and 80 PLUS Bronze efficiency at a competitive price point. It is black with black cable sleeving and connectors and a thermally controlled 120mm fan. With features usually reserved for premium power supplies, its a great choice for systems where continuous and reliable power delivery and low noise are essential.

Technical Specifications:
  • Power Provided - 450 Watt
  • Form Factor - ATX
  • 12V Rail - 37.4A
  • 80 Plus Efficiency Certification - Bronze
  • Braided Cables - Yes Black
  • Features - Over Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 1
  • PCI-E 6+2 Pin x 1
  • 4 Pin Molex x 4
  • SATA x 4

 

 

Corsair CX550 550W

CX Series power supply units provide modern power supply technologies and 80 PLUS Bronze efficiency at a competitive price point. It is black with black cable sleeving and connectors and a thermally controlled 120mm fan. With features usually reserved for premium power supplies, its a great choice for systems where continuous and reliable power delivery and low noise are essential.

Technical Specifications:
  • Power Provided - 550 Watt
  • Form Factor - ATX
  • 12V Rail - 45.8A
  • 80 Plus Efficiency Certification - Bronze
  • Braided Cables - Yes Black
  • Features - Over Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 1
  • PCI-E 6+2 Pin x 2
  • 4 Pin Peripheral x 4
  • SATA x 5

 

 

Corsair CX650 650W

CX Series power supply units provide modern power supply technologies and 80 PLUS Bronze efficiency at a competitive price point. It is black with black cable sleeving and connectors and a thermally controlled 120mm fan. With features usually reserved for premium power supplies, its a great choice for systems where continuous and reliable power delivery and low noise are essential.

Technical Specifications:
  • Power Provided - 650 Watt
  • Form Factor - ATX
  • 12V Rail - 54A
  • 80 Plus Efficiency Certification - Bronze
  • Braided Cables - Yes Black
  • Features - Over Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 1
  • PCI-E 6+2 Pin x 2
  • 4 Pin Molex x 4
  • SATA x 6

 

 

Corsair CX750 750W

CX Series power supply units provide modern power supply technologies and 80 PLUS Bronze efficiency at a competitive price point. It is black with black cable sleeving and connectors and a thermally controlled 120mm fan. With features usually reserved for premium power supplies, its a great choice for systems where continuous and reliable power delivery and low noise are essential.

Technical Specifications:
  • Power Provided - 750 Watt
  • Form Factor - ATX
  • 12V Rail - 62.5A
  • 80 Plus Efficiency Certification - Bronze
  • Braided Cables - Yes Black
  • Features - Over Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components.
Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 1
  • PCI-E 6+2 Pin x 4
  • 4 Pin Molex x 8
  • SATA x 8

 

 

Corsair RM750x 750W Fully Modular

Corsair RMx series power supplies give you extremely tight voltage control, quiet operation, Gold-certified efficiency, and a fully modular cable set. Built with all Japanese 105°C capacitors, they’re a great choice for high performance PCs where reliability is essential. 80 PLUS Gold efficiency reduces operating cost and excess heat, and Zero RPM fan mode ensures virtual silence at low and medium loads. And, the fully modular DC cables make builds and upgrades easy, with clean, great-looking results.

Technical Specifications:
  • Power Provided - 750 Watt
  • Form Factor - ATX
  • 12V Rail - 62.5A
  • 80 Plus Efficiency Certification - Gold
  • Cables - Flat Fully modular
  • Features - Features – Over-voltage protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection provide maximum safety to your critical system components.
Maximum Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 1
  • PCI-E 6+2 Pin x 4
  • 4 Pin Molex x 7
  • SATA x 8
  • 4 Pin Floppy x 2

 

 

Corsair RM850x 850W Fully Modular

Corsair RMx series power supplies give you extremely tight voltage control, quiet operation, Gold-certified efficiency, and a fully modular cable set. Built with all Japanese 105°C capacitors, they’re a great choice for high performance PCs where reliability is essential. 80 PLUS Gold efficiency reduces operating cost and excess heat, and Zero RPM fan mode ensures virtual silence at low and medium loads. And, the fully modular DC cables make builds and upgrades easy, with clean, great-looking results.

Technical Specifications:
  • Power Provided - 850 Watt
  • Form Factor - ATX
  • 12V Rail - 70.8A
  • 80 Plus Efficiency Certification - Gold
  • Cables - Flat Fully modular
  • Features - Over-voltage protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection provide maximum safety to your critical system components.
Maximum Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 1
  • PCI-E 6+2 Pin x 6
  • 4 Pin Molex x 8
  • SATA x 10
  • 4 Pin Floppy x 2

 

 

Corsair RM1000 1000W Fully Modular

Corsair RMx series power supplies give you extremely tight voltage control, quiet operation, Gold-certified efficiency, and a fully modular cable set. Built with all Japanese 105°C capacitors, they’re a great choice for high performance PCs where reliability is essential. 80 PLUS Gold efficiency reduces operating cost and excess heat, and Zero RPM fan mode ensures virtual silence at low and medium loads. And, the fully modular DC cables make builds and upgrades easy, with clean, great-looking results.

Technical Specifications:
  • Power Provided - 1000 Watt
  • Form Factor - ATX
  • 12V Rail - 83.3A
  • 80 Plus Efficiency Certification - Gold
  • Cables - Flat Fully modular
  • Features - Over-voltage protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection provide maximum safety to your critical system components.
Maximum Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 1
  • PCI-E 6+2 Pin x 8
  • 4 Pin Molex x 11
  • SATA x 12
  • 4 Pin Floppy x 2

 

 

Corsair AX1200i 1200W Fully Modular

Corsair AX Series™ power supply units set a new standard for performance, quality, reliability, and energy-efficiency in consumer PSUs. 80 PLUS® Platinum certification guarantees more than 90% efficiency at typical loads, while unflinching voltage stability, low-noise levels, and a fully modular cable set make the AX Series PSUs the ultimate choice for discerning enthusiasts.

Technical Specifications:
  • Power Provided - 1200 Watt
  • Form Factor - ATX
  • 12V Rail - 100.4A
  • 80 Plus Efficiency Certification - Platinum
  • Cables - Flat Fully modular
  • Features - Over-voltage, over-current protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection provide maximum safety to your critical system components
Maximum Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 2
  • PCI-E 6+2 Pin x 8
  • 4 Pin Molex x 12
  • SATA x 16
  • 4 Pin Floppy x 2

 

 

Corsair AX1500i 1500W Fully Modular

Corsair AX Series™ power supply units set a new standard for performance, quality, reliability, and energy-efficiency in consumer PSUs. 80 PLUS® Platinum certification guarantees more than 90% efficiency at typical loads, while unflinching voltage stability, low-noise levels, and a fully modular cable set make the AX Series PSUs the ultimate choice for discerning enthusiasts.

Technical Specifications:
  • Power Provided - 1500 Watt
  • Form Factor - ATX
  • 12V Rail - 125A
  • 80 Plus Efficiency Certification - Platinum
  • Cables - Flat Fully modular
  • Features - Over-voltage protection, under-voltage protection, over current protection, short circuit protection, over power protection, and over temperature protection provide maximum safety to your critical system components.
Maximum Connectors:
  • M/B 20+4 Pin x 1
  • CPU 4+4 Pin x 2
  • PCI-E 6+2 Pin x 10
  • 4 Pin Molex x 12
  • SATA x 20
  • 4 Pin Floppy x 2

 

Whilst UK Gaming Computers endeavour to make sure our descriptions are 100% correct, manufacturers may alter specifications slightly, it is your responsibility to check the specification with the manufacturer. Images are for illustration purposes only. If you are unsure of anything, please contact us, we wont bite!