Is This PSU good enough for a gaming rig?

Im building a gaming PC at the moment and i have got this case: Casecom Black Midi Tower Case - Cheap at Ebuyer! and this is the PSU im gona be buying : CIT 750W Dual 12V Rail 12cm Fan PSU - 2x SATA 1x PCI-E - Ebuyer as this has 7 molex as well as 2 SATA which i need only thing i was worried about was the fan it has on top of the PSU will it be ok and not over heat as the PSU sits at the top of the case covering it. Also soes it seem like an ok PSU for price. Thanks for any help you can give.

The case looks OK however there are "gaming" cases sold. Avoid the "off brand" or inexpensive power supplies. They tend to be overrated (in watts) and also have poor voltage regulation. Go with a better "name brand" power supply. Do not go for the "inexpensive" if you are building a real gaming system.

I just upgraded my power supply to a 750 watt XFX "black" modular type power supply. Usually, you wind up with too many cables from a power supply and the modular type eliminates some of the cable clutter.

As far as the fan, you can mount power supplies either way with the fan down (towards the motherboard - the usual way with a top mounted power supply) or with the fan pointing up. So it's not an issue of where the fan is physically located.

thanks for the replys the only other 1 i was considering was this 1 : Arctic Power 500W PSU With PCI-E 2x SATA, 20+4 ATX12V 8pin +12V Connectors - Retail Boxed - Ebuyer
but its alot less watts and not enough molex's do you know of any for £30-40 that are any good?

Buying a cheap supply is like pouring cheap gas in your new Porsche. Would you do that? You might, but would you expect top performance? A car motor can miss a beat and keep running, not so with high speed digital electronics.

I would stop trying to save money and invest in a good supply from a reputable maker. A well chosen supply will last years and support you through several hardware upgrades. Following is my canned text on sizing and selecting a good PSU.
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Use the eXtreme PSU Calculator Lite to determine your power supply unit (PSU) requirements. Plug in all the hardware you think you might have in 2 or 3 years (extra drives, bigger or 2nd video card, more RAM, etc.). Be sure to read and heed the notes at the bottom of the page. I recommend setting Capacitor Aging to 30%, and if you participate in distributive computing projects (e.g. BOINC or Folding@Home) or extreme 3D animated gaming, I recommend setting both TDP and system load to 100%. These steps ensure the supply has adequate head room for stress free (and perhaps quieter) operation, and future hardware demands. Research your video card and pay particular attention to the power supply requirements for your card listed on your video card maker's website. If not listed, check a comparable card (same graphics engine and RAM) from a different maker. The key specifications, in order of importance are:

1. Current (amperage or amps) on the +12V rail,
2. Efficiency,
3. Total wattage.

Then look for power supply brands listed under the "Good" column of PC Mechanic's PSU Reference List. Ensure the supplied amperage on the +12V rails of your chosen PSU meets the requirements of your video card. Don't try to save a few dollars by getting a cheap supply. And don't count on supplies that come included with a case. They are often underrated, budget or poor quality models "tossed in" to make the case sale. Digital electronics, including CPUs, RAM, and today's advanced graphics cards, need clean, stable power. A good, well chosen supply will provide years of service and upgrade wiggle room. I strongly recommend you pick a supply with an efficiency rating equal to, or greater than 80%. Look for the 80 Plus - EnergyStar Compliant label. And don't forget to budget for a good UPS with AVR (automatic voltage regulation), as surge and spike protectors are inadequate.

I also recommend going with a modular power supply if you care about tidy wiring inside your case. The modular units really cut down on cable clutter.

The emphasis on quality cannot be more important when dealing with modular PSUs. While a modular PSU allows you to only use the cables you need, each connection and connector is a potential point of failure and degradation. So while you can achieve better air flow through the case with a modular PSU, you can also introduce electrical noise and poor quality voltages at the same time, and the opportunity to knock another connection loose every time you do maintenance.

My PC is a gaming rig and only has a 480w supply, it really depends on what is going inside, overclocked, powerful CPUs and GPUs can pull in far, far more than my 480w supply could handle.

and of course, for goodness sake don't cheap out, what happens when a crud PSU fails on you (and it will) is horrible and can be expensive! Even poor connections can damage or even break your computer, the voltages are not high but the currents are and you want nice firm connections. I once cheaped out on a PSU, learn from my mistake! ;P

also, as said, think ahead, your PSU is likely going to be the longest lived component in your PC, and hopefully will be with you for a long time, so buying cheap is a false economy in many ways.


digis posts are very useful