ok people, here is the specs for my machine and i would like to know which power supply would be best for my machine (working with below 50 dollars here) and where.
EVGA 680i premium motherboard
1x2 Gig 667Mhz RAM (trying to expand to 4gig)
410gig storage
2.4ghz q6600 quadcore processor
512mb nvidea 8400 vga (point of view)

running vista ultimate, core programs being 3d softs, programming softs.
ok people lemme know what you think. thanks

Dani AI

Generated

The OP is running an EVGA 680i system with a Core2Quad and a cheap, failing supply and plans a discrete GPU upgrade. Several members—, and —have already stressed that a better PSU is the right move. The guidance below clarifies what matters beyond a single wattage number and gives a short checklist for buying and verifying a replacement, especially if it will be brought in from abroad.

Key selection points: the most important spec is how much current the +12V rail(s) can reliably deliver, because the CPU and any discrete GPU draw from +12V. Prioritize build quality and voltage stability over a marketing-high wattage from an unknown maker. Look for an established brand, good efficiency certification, solid components (low-noise fans, quality electrolytics), and clear labeling of +12V amperage and connector counts. Headroom is important: pick a supply whose realistic output comfortably exceeds the estimated peak system draw rather than one that barely matches it.

Practical checklist before ordering: inspect the current PSU label for +12V amperage and count connectors (main ATX, CPU 4/8-pin, SATA, Molex, any PCIe 6/8-pin). Verify the target video card’s official power requirement—many low-end cards need no extra PCIe plug, but always check. Ensure the replacement supports local mains (230 V) or is auto-switching if shipping from the UK/US. Prefer a new unit with warranty; a well-tested used PSU from a reputable maker can be acceptable if paperwork and testing are available.

Final cautions: avoid ultra-cheap, unbranded units—the short-term saving can lead to much higher repair costs if other components are damaged. When a traveler will bring the part, confirm model, warranty handling, and the seller’s return policy before purchase.

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All 17 Replies

Spend as much as you can on a PSU. Cheap ones are a false economy.

Do you have any in mind at the mo?

no, not really. the one i'm using currently cost me $15. and it's giving me a headache, plus i want to change my VGA to a GTX 9300 so i really need something good.

Where abouts in the world are you and do you want to buy from a local shop or via the net?

Also, a rough idea of budget would be handy.

ok, i'm in Ghana (west africa) and i'd get someone who is coming from the states or uk to get it for me. as i said, i'm working with below $50 (that is for the PSU).

What is the mains supply voltage in Ghana?

220-240 V

In that case you will be wanting a UK power supply.

You will need at least a 550 Watt PSU. Good luck finding one for $50.

Buy a cheap psu and run the risk of damaging more expensive PC parts.

ok, 550 it is. Someone was saying something about amps too, don't know much about that but i guess the 550 will do cos i'm using 450 right now.

Be careful it has enough AMPS on the 12v rail.

Look at 18 amps being the absolute minimum.

Corsair VX550 with 550 Watt has 41A at 12V.

Buy a cheap psu and run the risk of damaging more expensive PC parts.

if interested, you can get it from Pakistan. but who will pay for courier?

wltrsi

if interested, you can get it from Pakistan. but who will pay for courier?

wltrsi

Get what? A cheap psu?

Get what? A cheap psu?

Yes, A cheap by price PSU.

guys guys, so the amp is as important as the watts, ok, i don't think i can get anyone from Paki though.

Corsair VX550 with 550 Watt has 41A at 12V.

googled it and the cheapest was $72. anymore suggestions then i can order quickly, i've got a couple of killer games waiting to be played. (and some coding to be done too)

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