400 Watt + ATI 5770?

[Acolapissa]

I am working a gateway comp with additional often than not stock parts, Intel VIIV CPU, 2 GiG ram, 1 500g HDD and a 400 watt power make available. A 400w quality PSU would be approaching it at the extremely most excellent. Stock PSUs are trash for the reason that that’s where companies cut costs. I would not trust a stock PSU to power everything. It might be overkill, but when you throw that gateway out (optimistically soon), and replace it with a convention apparatus, I determine to not have to purchase a PSU. What be supposed to I do here.

[xanix]

This card determine to run, regrettably your power supply would not cut it. You might try using it and it would almost certainly run, but it is dangerous and might be a gamble for your computer. The probable outcome is your power supply determines to fail a few months down the road and if it's crappy determine to overload your board and card on its way out. This might consequence in fried MB, RAM and the innovative GPU.

[OS-X-10+]

Not compulsory power make available for 1x 5770 is 450W and 2x 5770 in crossfire is 600W. An entirety system under load with a 5770 uses approx. 256W of power. If you do not have a second PCIe slot to crossfire and you do not plan on improvement your system anytime soon this is the minimum power supply to utilize. If you have the capability to crossfire down the road get and suggested or a 650W. You desire to utilize a quality power supply so you do not possibility over volting your equipment and frying things. Anticipate this helps.

[MaCiNToSHeR]

There no method as a 5770 uses 256w under load on its personal. That statistic is almost certainly from the power usage of the complete PC under load. In point of information it definitely is. An i7 system with 5770 uses 213w at the same time as playing crysis. The 400W is by far sufficient, but you doubt your psu is of greater adequate quality. The 5770 uses currently in additional of 100w at full load. You doubt the rest of your computer uses 300w, but you be supposed to get a quality 500w+ presently to be safe.

[Bindusar]

You necessitate verifying the amount of amps on 12v rail. The 400w is perhaps sufficient but without adequate amps it determines to almost certainly fail. The majority psu have a sticker on its side that demonstrates the requirement. The amount of amps more often than not exposed presently under the 12v+ column. How numerous amps on the 12V rail. I have a 350W power supply and it powers my 4870 presently extremely well with an over clocked Intel Pentium E6300. Your power make available has 18A 12V rails (2 rails). The 4870 uses much additional power than the 5770.

[Abhibhava]

A 400watt psu determine to be superior. You be familiar with for the reason that you looked at corsair's power make available calculator. In addition you have tested an hd4890, too. The hd5770 absolutely uses half of what the additional did. Maintenance cool pays off with digital power control chips. Throughout operation, shift the fan sliders up to advantage lower power expenditure. In view of the fact that the card uses low power, the easier it gets to maintain it cool/quiet with +25% fan speed.

[stephenx]

Tremendous selection for PSU, unless you plan on purchasing a 2nd GPU for xfire downstream. The build - i3-540, ATI 5670 and the corsair 400 W PSU. Your system - i5-750 w/5770 GPU. Your max power determines to be less than 300 W with a solitary CPU. Would correspond with shadow187 that a 5770 would be a superior alternative. If you imagine you might xfire two 5770s later (Depends on games you play and your pleasure with those games), then you would suggest a 500 ->550 W PSU. Preferably you would desire the PSU at 60 -> 75% loaded when GPU is loaded. A 2nd 5770 would jump your power expenditure from regarding 290 W to 390 W which would be too close to max 400 W.