Is 475w enough for HD7790 2gb

hasithar · Aug 17, 2013

I recently bought a budget pc, the following are the spec. i just want to know whether the PSU is enough for the pc.

Processor :intel i5 3470
Ram: Kingston 4 gb (1600mhz)Planing to upgrade to 8 gb
Mother board : low end borad gigabyte b75
hdd: 1 tb maxtor
two 120mm fans
gpu: sapphire hd 7790 2gb
PSU: cooler mater 475 Ex2

I was playing crysis 3 on high settings and the pc shut it self down with a "tuuf" sound. i knew it was the PSu. (i connect another psu to be sure, and it is the psu that got burnt)

So does this card reqire more power? i found out that the TDP is around 90 watt and i don't think all other components draw much power either.

well im no expert though.. ur ideas and recommendations are highly valued.
thanks guys

nukemaster · Aug 17, 2013

In pure theory, You would have enough.

One problem is many of coolermasters power supplies do not deliver the rated wattage.

pell380 · Aug 18, 2013

Cooler master is not junk as most of the people thinks
my 2 firends are using cooler master psu for like more then 4 years with thier gpu's no problem at all but they are using the 600 watt version (NOT BRONZE

)
but that particular model of cm looks like shit !

hasithar · Aug 18, 2013

nukemaster :

thanks..but the actual power consumption of the card isn't no way near 475w.

hasithar · Aug 18, 2013

byogamingpc :

Yeah the PSU Powered it .. but couldn't take the load.! I should have done the research before i bought it. yeah now i know CM isn't a good PSU.. because a cosair 430w produce more amps than the CM 475W ..

. the requirement is 21amp +12v for hd7790..

hasithar · Aug 18, 2013

pell380 :

haha.. yeah this is carp..!! CM isn't good enough to get the maximum out a Mid level GPU.. i'd have to get CM 625w to run my VGA which only reqires 475w..

nukemaster · Aug 18, 2013

Any quality 450 watt(corsairs 430 is fine as well) unit should have no issues.

You are right that the card does not need that much power.

To be honest, I run a GTX 650ti on a 300 watt power supply(264 watts on its 12 volt rails) with no issues at all.

I do not recommend users try such things unless they take into account all the systems parts.

450 watts gives you a nice buffer.

hasithar · Aug 19, 2013

nukemaster :

Yeah true!! it's all about the quality of the PSU. thanks alot mate. i do hav to upgrade this since the required ampz is not provided by the PS, which makes the PS overheat and that might b the reason why the PSU burnt in my case..
thanks mate.

hasithar · Aug 19, 2013

Power requirements for graphics cards

As so many people aren't sure how much power a modern graphics card requires MINIMUM, I've decided to write a list of various models with the sort of PSU they require. Obviously it would be better to get something better than what is stated. It is only a rough guide, as it also depends what other hardware you have in your system. I hope it is of some use to people.

The following are the minimum power requirements using a PSU with a single +12V rail. Also these requirements are for a system containing basic components (unless otherwise noted). The more add in cards and hard drives that a system has, the more amperage draw on the 12v rail.

nVidia

GeForce GTX TITAN - 38A and a 600W PSU minimum
GeForce GTX 780 - 42A and a 600W PSU minimum
GeForce GTX 770 - 42A and a 600W PSU minimum
GeForce GTX 760 - 30A and a 500W PSU minimum
GeForce GTX 690 - 46A and a 650W PSU minimum
GeForce GTX 680 - 38A and a 550W PSU minimum
GeForce GTX 670 - 30A and a 500W PSU minimum
Geforce GTX 660ti - 24A and a 450W PSU minimum
Geforce GTX 660 - 24A and a 450W PSU minimum
Geforce GTX 650ti Boost - 24A and a 450W PSU minimum
Geforce GTX 650ti - 20A and a 400W PSU minimum
Geforce GTX 650 - 20A and a 400W PSU minimum
GeForce GT 640 - 20A and a 350W PSU minimum
GeForce GT 630 - 20A and a 350W PSU minimum
GeForce GT 620 - 18A and a 350W PSU minimum
GeForce GT 610 - 16A and a 300W PSU minimum
GeForce GTX 590 in SLi - 78A and a 1000W PSU minimum
GeForce GTX 590 - 46A and a 700W PSU minimum
GeForce GTX 580 - 40A and a 600W PSU minimum
GeForce GTX 570 - 35A and a 550W PSU minimum
GeForce GTX 560 Ti in SLi - 42A and a 700W PSU minimum
GeForce GTX 560 Ti - 31A and a 500W PSU minimum
GeForce GTX 560 - 24A and a 4500W PSU minimum
GeForce GTX 550 Ti - 24A and a 400W PSU minimum
GeForce GT 520 - 18A and a 300W PSU minimum
GeForce GTX 470 and 480 in SLi - 55-60A and a 850W PSU minimum
GeForce GTX 480 - 42A and a 600W PSU minimum
GeForce GTX 470 - 38A and a 550W PSU minimum
GeForce GTX 465 in SLi - 46A and a 700W PSU minimum
GeForce GTX 465 - 30A and a 500W PSU minimum
GeForce GTX 460 in SLi - 42A and a 650W PSU minimum
GeForce GTX 460 - 26A and a 450W PSU minimum
GeForce GTS 450 in SLi - 35A and a 600W PSU minimum
GeForce GTS 450 - 24A and a 450W PSU minimum
GeForce GT 430 - 22A and a 350W PSU minimum
GeForce GTX 295 in Quad SLi - 70A and a 1000W PSU minimum
GeForce GTX 295 - 50A and a 700W PSU minimum
GeForce GTX 285 - 46A and a 550W PSU minimum
GeForce GTX 280 in SLi - 55A and a 800W PSU minimum
GeForce GTX 280 - 40A and a 550W PSU minimum
GeForce GTX 275 in SLi - 50A and a 800W PSU minimum
GeForce GTX 275 - 40A and a 550-600W PSU minimum
GeForce GTX 260 OC in SLi - 50A and a 700W PSU minimum
GeForce GTX 260 OC - 40A and a 550W PSU minimum
GeForce GTX 260 in SLi - 50A and a 700W PSU minimum
GeForce GTX 260 - 38A and a 500W PSU minimum
GeForce GTS 250 - 24A and a 450W PSU minimum
GeForce GT 240 - 18A and a 300W PSU minimum
GeForce GT 220 - 18A and a 300W PSU minimum
GeForce 9800 GX2 - 35A and a 550W PSU minimum
GeForce 9800 GTX+ - 32A and a 500W PSU minimum
GeForce 9800 GTX - 25-30A and a 450W PSU minimum
GeForce 9600 GT - 26A and a 450W PSU minimum
GeForce 9600 GSO - 26A and a 450W PSU minimum
GeForce 8800 Ultra - 35A and a 500W PSU minimum
GeForce 8800 GTX – 30A and a 450W PSU minimum
GeForce 8800 GTS 512MB - 28A and a 500W PSU minimum
GeForce 8800 GTS 320/640MB – 26A and a 400W PSU minimum
GeForce 8800 GT in SLi - 36A and a 500W PSU minimum
GeForce 8800 GT - 26A and a 450W PSU minimum
GeForce 8600 GT/GTS - 24A and a 350W PSU minimum
GeForce 8500 GT - 22A and a 350W PSU minimum
GeForce 8400 GS - 18A and a 350W PSU minimum
GeForce 7950 GX2 – 27A and a 400W PSU minimum
GeForce 7950 GT – 22A and a 350W PSU minimum
GeForce 7900 GTX – 22-26A and a 350-400W PSU minimum
GeForce 7900 GTO – 22-26A and a 350-400W PSU minimum
GeForce 7900 GT – 22-26A and a 350-400W PSU minimum
GeForce 7900 GS – 22-23A and a 350W PSU minimum
GeForce 7800 All - 26A and a 400W PSU minimum
GeForce 7800 GS AGP - 20A and a 400W PSU minimum
GeForce 7600 GT – 22-26A and a 350W PSU minimum
GeForce 7600 GS – 15-17A and a 350W PSU minimum
GeForce 7300 GT – 15A and a 300W PSU minimum
GeForce 7300 GS – 15A and a 300W PSU minimum

ATI/AMD

Radeon HD 7990 - 48A and a 750W psu minimum
Radeon HD 7970 Ghz Edition - 31A and a 550W psu minimum
Radeon HD 7970 - 30A and a 500W psu minimum
Radeon HD 7950 - 25A and a 500W psu minimum
Radeon HD 7870 - 23A and a 500W psu minimum
Radeon HD 7850 - 21A and a 500W psu minimum
Radeon HD 7790 - 21A and a 500W psu minimum
Radeon HD 7770 - 19A and a 500W psu minimum
Radeon HD 7750 - 16A and a 400W psu minimum
Radeon HD 6990 - 45A and a 750W PSU minimum
Radeon HD 6970 - 34A and a 550W PSU minimum
Radeon HD 6950 - 30A and a 500W PSU minimum
Radeon HD 6870 X2 - 40A and a 600W PSU minimum
Radeon HD 6870 CrossfireX - 38A and a 650W PSU minimum
Radeon HD 6870 - 28A and a 500W PSU minimum
Radeon HD 6850 CrossfireX - 35A and a 600W PSU minimum
Radeon HD 6850 - 25A and a 450W PSU minimum
Radeon HD 6770 CrossfireX - 33A and a 600W PSU minimum
Radeon HD 6770 - 25A and a 450W PSU minimum
Radeon HD 6790 - 25A and a 450W PSU minimum
Radeon HD 6670 - 17A and a 400W PSU minimum
Radeon HD 5970 CrossfireX - 70A and a 900W PSU minimum
Radeon HD 5970 - 50A and a 600W PSU minimum
Radeon HD 5870 CrossfireX - 55-60A and a 700W PSU minimum
Radeon HD 5870 - 40A and a 500W PSU minimum
Radeon HD 5850 CrossfireX - 55-60A and a 650W PSU minimum
Radeon HD 5850 - 35-40A and a 500W PSU minimum
Radeon HD 5830 - 35-40A and a 500W PSU minimum
Radeon HD 5770 - 34A and a 500W PSU minimum
Radeon HD 5750 - 30A and a 450W PSU minimum
Radeon HD 5670 - 26A and a 400W PSU minimum
Radeon HD 5570 - 24A and a 350W PSU minimum
Radeon HD 5450 - 22A and a 300W PSU minimum
Radeon 4890 - 32A and a 550W PSU minimum
Radeon 4870 X2 CrossfireX - 67A and a 1000W PSU minimum
Radeon 4870 X2 - 43A and a 600W PSU minimum
Radeon 4870 - 32A and a 500W PSU minimum
Radeon 4850 - 30A and a 450W PSU minimum
Radeon 4830 - 26A and a 400W PSU minimum
Radeon 4770 Crossfire - 34A and a 750W PSU minimum
Radeon 4770 - 26A and a 400-500W PSU minimum
Radeon 4670 - 26A and a 400W PSU minimum
Radeon 4650 - 24A and a 350-400W PSU minimum
Radeon 4550 - 20A and a 300W PSU minimum
Radeon X3870 X2 - 30A and a 550W PSU minimum
Radeon X38xx series - 28A and a 450W PSU minimum
Radeon X2900 XT Crossfire - 45A and a 800W PSU is recommended for high-end rigs
Radeon X2900 XT - 35A and a 500W PSU is recommended for high-end rigs
Radeon X2900 Pro - 35A and a 500W PSU minimum
Radeon X2600 XT - 25A and a 400W PSU minimum
Radeon X2400 XT - 20A and a 350-400W PSU minimum
Radeon X1950 XTX – 20A and a 420W PSU minimum
Radeon X1950 Pro – 20A and a 420W PSU minimum
Radeon X1900 XTX – 25A and a 520W PSU minimum
Radeon X1900 XT – 22-25A and a 520W PSU minimum
Radeon X1900 GT – 22A and a 400W PSU minimum
Radeon X1650 Pro – 18A and a 350W PSU minimum

nukemaster · Aug 19, 2013

hasithar :

Power requirements for graphics cards

As so many people aren't sure how much power a modern graphics card requires MINIMUM, I've decided to write a list of various models with the sort of PSU they require. Obviously it would be better to get something better than what is stated. It is only a rough guide, as it also depends what other hardware you have in your system. I hope it is of some use to people.

The following are the minimum power requirements using a PSU with a single +12V rail. Also these requirements are for a system containing basic components (unless otherwise noted). The more add in cards and hard drives that a system has, the more amperage draw on the 12v rail.

nVidia

GeForce GTX TITAN - 38A and a 600W PSU minimum
GeForce GTX 780 - 42A and a 600W PSU minimum
GeForce GTX 770 - 42A and a 600W PSU minimum
GeForce GTX 760 - 30A and a 500W PSU minimum
GeForce GTX 690 - 46A and a 650W PSU minimum
GeForce GTX 680 - 38A and a 550W PSU minimum
GeForce GTX 670 - 30A and a 500W PSU minimum
Geforce GTX 660ti - 24A and a 450W PSU minimum
Geforce GTX 660 - 24A and a 450W PSU minimum
Geforce GTX 650ti Boost - 24A and a 450W PSU minimum
Geforce GTX 650ti - 20A and a 400W PSU minimum
Geforce GTX 650 - 20A and a 400W PSU minimum
GeForce GT 640 - 20A and a 350W PSU minimum
GeForce GT 630 - 20A and a 350W PSU minimum
GeForce GT 620 - 18A and a 350W PSU minimum
GeForce GT 610 - 16A and a 300W PSU minimum
GeForce GTX 590 in SLi - 78A and a 1000W PSU minimum
GeForce GTX 590 - 46A and a 700W PSU minimum
GeForce GTX 580 - 40A and a 600W PSU minimum
GeForce GTX 570 - 35A and a 550W PSU minimum
GeForce GTX 560 Ti in SLi - 42A and a 700W PSU minimum
GeForce GTX 560 Ti - 31A and a 500W PSU minimum
GeForce GTX 560 - 24A and a 4500W PSU minimum
GeForce GTX 550 Ti - 24A and a 400W PSU minimum
GeForce GT 520 - 18A and a 300W PSU minimum
GeForce GTX 470 and 480 in SLi - 55-60A and a 850W PSU minimum
GeForce GTX 480 - 42A and a 600W PSU minimum
GeForce GTX 470 - 38A and a 550W PSU minimum
GeForce GTX 465 in SLi - 46A and a 700W PSU minimum
GeForce GTX 465 - 30A and a 500W PSU minimum
GeForce GTX 460 in SLi - 42A and a 650W PSU minimum
GeForce GTX 460 - 26A and a 450W PSU minimum
GeForce GTS 450 in SLi - 35A and a 600W PSU minimum
GeForce GTS 450 - 24A and a 450W PSU minimum
GeForce GT 430 - 22A and a 350W PSU minimum
GeForce GTX 295 in Quad SLi - 70A and a 1000W PSU minimum
GeForce GTX 295 - 50A and a 700W PSU minimum
GeForce GTX 285 - 46A and a 550W PSU minimum
GeForce GTX 280 in SLi - 55A and a 800W PSU minimum
GeForce GTX 280 - 40A and a 550W PSU minimum
GeForce GTX 275 in SLi - 50A and a 800W PSU minimum
GeForce GTX 275 - 40A and a 550-600W PSU minimum
GeForce GTX 260 OC in SLi - 50A and a 700W PSU minimum
GeForce GTX 260 OC - 40A and a 550W PSU minimum
GeForce GTX 260 in SLi - 50A and a 700W PSU minimum
GeForce GTX 260 - 38A and a 500W PSU minimum
GeForce GTS 250 - 24A and a 450W PSU minimum
GeForce GT 240 - 18A and a 300W PSU minimum
GeForce GT 220 - 18A and a 300W PSU minimum
GeForce 9800 GX2 - 35A and a 550W PSU minimum
GeForce 9800 GTX+ - 32A and a 500W PSU minimum
GeForce 9800 GTX - 25-30A and a 450W PSU minimum
GeForce 9600 GT - 26A and a 450W PSU minimum
GeForce 9600 GSO - 26A and a 450W PSU minimum
GeForce 8800 Ultra - 35A and a 500W PSU minimum
GeForce 8800 GTX – 30A and a 450W PSU minimum
GeForce 8800 GTS 512MB - 28A and a 500W PSU minimum
GeForce 8800 GTS 320/640MB – 26A and a 400W PSU minimum
GeForce 8800 GT in SLi - 36A and a 500W PSU minimum
GeForce 8800 GT - 26A and a 450W PSU minimum
GeForce 8600 GT/GTS - 24A and a 350W PSU minimum
GeForce 8500 GT - 22A and a 350W PSU minimum
GeForce 8400 GS - 18A and a 350W PSU minimum
GeForce 7950 GX2 – 27A and a 400W PSU minimum
GeForce 7950 GT – 22A and a 350W PSU minimum
GeForce 7900 GTX – 22-26A and a 350-400W PSU minimum
GeForce 7900 GTO – 22-26A and a 350-400W PSU minimum
GeForce 7900 GT – 22-26A and a 350-400W PSU minimum
GeForce 7900 GS – 22-23A and a 350W PSU minimum
GeForce 7800 All - 26A and a 400W PSU minimum
GeForce 7800 GS AGP - 20A and a 400W PSU minimum
GeForce 7600 GT – 22-26A and a 350W PSU minimum
GeForce 7600 GS – 15-17A and a 350W PSU minimum
GeForce 7300 GT – 15A and a 300W PSU minimum
GeForce 7300 GS – 15A and a 300W PSU minimum

ATI/AMD

Radeon HD 7990 - 48A and a 750W psu minimum
Radeon HD 7970 Ghz Edition - 31A and a 550W psu minimum
Radeon HD 7970 - 30A and a 500W psu minimum
Radeon HD 7950 - 25A and a 500W psu minimum
Radeon HD 7870 - 23A and a 500W psu minimum
Radeon HD 7850 - 21A and a 500W psu minimum
Radeon HD 7790 - 21A and a 500W psu minimum
Radeon HD 7770 - 19A and a 500W psu minimum
Radeon HD 7750 - 16A and a 400W psu minimum
Radeon HD 6990 - 45A and a 750W PSU minimum
Radeon HD 6970 - 34A and a 550W PSU minimum
Radeon HD 6950 - 30A and a 500W PSU minimum
Radeon HD 6870 X2 - 40A and a 600W PSU minimum
Radeon HD 6870 CrossfireX - 38A and a 650W PSU minimum
Radeon HD 6870 - 28A and a 500W PSU minimum
Radeon HD 6850 CrossfireX - 35A and a 600W PSU minimum
Radeon HD 6850 - 25A and a 450W PSU minimum
Radeon HD 6770 CrossfireX - 33A and a 600W PSU minimum
Radeon HD 6770 - 25A and a 450W PSU minimum
Radeon HD 6790 - 25A and a 450W PSU minimum
Radeon HD 6670 - 17A and a 400W PSU minimum
Radeon HD 5970 CrossfireX - 70A and a 900W PSU minimum
Radeon HD 5970 - 50A and a 600W PSU minimum
Radeon HD 5870 CrossfireX - 55-60A and a 700W PSU minimum
Radeon HD 5870 - 40A and a 500W PSU minimum
Radeon HD 5850 CrossfireX - 55-60A and a 650W PSU minimum
Radeon HD 5850 - 35-40A and a 500W PSU minimum
Radeon HD 5830 - 35-40A and a 500W PSU minimum
Radeon HD 5770 - 34A and a 500W PSU minimum
Radeon HD 5750 - 30A and a 450W PSU minimum
Radeon HD 5670 - 26A and a 400W PSU minimum
Radeon HD 5570 - 24A and a 350W PSU minimum
Radeon HD 5450 - 22A and a 300W PSU minimum
Radeon 4890 - 32A and a 550W PSU minimum
Radeon 4870 X2 CrossfireX - 67A and a 1000W PSU minimum
Radeon 4870 X2 - 43A and a 600W PSU minimum
Radeon 4870 - 32A and a 500W PSU minimum
Radeon 4850 - 30A and a 450W PSU minimum
Radeon 4830 - 26A and a 400W PSU minimum
Radeon 4770 Crossfire - 34A and a 750W PSU minimum
Radeon 4770 - 26A and a 400-500W PSU minimum
Radeon 4670 - 26A and a 400W PSU minimum
Radeon 4650 - 24A and a 350-400W PSU minimum
Radeon 4550 - 20A and a 300W PSU minimum
Radeon X3870 X2 - 30A and a 550W PSU minimum
Radeon X38xx series - 28A and a 450W PSU minimum
Radeon X2900 XT Crossfire - 45A and a 800W PSU is recommended for high-end rigs
Radeon X2900 XT - 35A and a 500W PSU is recommended for high-end rigs
Radeon X2900 Pro - 35A and a 500W PSU minimum
Radeon X2600 XT - 25A and a 400W PSU minimum
Radeon X2400 XT - 20A and a 350-400W PSU minimum
Radeon X1950 XTX – 20A and a 420W PSU minimum
Radeon X1950 Pro – 20A and a 420W PSU minimum
Radeon X1900 XTX – 25A and a 520W PSU minimum
Radeon X1900 XT – 22-25A and a 520W PSU minimum
Radeon X1900 GT – 22A and a 400W PSU minimum
Radeon X1650 Pro – 18A and a 350W PSU minimum

It is a nice list, but may need some revisions. The 5770 and 6770 are the same card(the absolute minimum you need for those cards would be about 300 watts as long as the rest of the system is light enough).

Here is a 5770 with an i5 750 running Just Cause 2 and prime95 together

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Is 475w enough for HD7790 2gb

hasithar

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nukemaster

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pell380

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hasithar

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hasithar

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