GTX 280 psu question.

[Ka0ticMind]

Hi Guys, quick question....would a Gigabyte ODIN GT 550W ATX2.2 psu be enough to power a gtx280 graphics card and E8500 cpu..with just one harddrive and souncard.


Thanks in advance.

Was going to get a 4870X2 but the psu may struggle.

 

[rjk]

ive seen people running 280's on a corsair 520w psu

i think you may get away with it
but i would consider it a short term solution and perhaps consider an updrade for the psu

Was going to get a 4870X2 but the psu may struggle.

i think that would be pushing it tbh

 

[Ka0ticMind]

ive seen people running 280's on a corsair 520w psu

i think you may get away with it
but i would consider it a short term solution and perhaps consider an updrade for the psu



i think that would be pushing it tbh

Thanks for the reply think i'll rma it and purchase the 800watt model just to be safe.

 

[Vimes]

Hi Guys, quick question....would a Gigabyte ODIN GT 550W ATX2.2 psu be enough to power a gtx280 graphics card and E8500 cpu..with just one harddrive and souncard.


Thanks in advance.

Was going to get a 4870X2 but the psu may struggle.

If it is the PSU that supplies a maximum of 41amps then I think you are going to have a problem as the GTX 280 requires 42amps, and that is before you consider your other hardware. IIRC the 4870 requires 26amps

Remember that the wattage is one factor BUT the amps that it produces is critical to your needs. That is one reason why you can get ultra cheap, but high wattage, PSU's that will struggle with modern graphics cards.

I have just got this one...

http://www.overclockers.co.uk/showp...tream 800w Silent SLI Ready ATX2 Power Supply

There are 62amps available on the above PSU.

The EliteXStream will be available in 800W and 1000W configurations, delivering up to 1KW of continuous power through a complete array of connectors including four 8 pin (6+2) PCI-E and 17 drive connectors and is kept supremely cool with a large 120mm fan and features a standard ATX power supply form factor. The EliteXStream offers one of the industry's most robust consumer power supply designs on the market, and is backed by an incredible 5 year warranty and unmatched technical support from OCZ.

 

[rjk]

agreed with above - like i said - a psu upgrade would be advised

to be honest its the last thing you want failing

i wouldnt plug my much loved hardware into something that wouldnt power it properly

 

[Fire Wizard]

If it is the PSU that supplies a maximum of 41amps then I think you are going to have a problem as the GTX 280 requires 42amps, and that is before you consider your other hardware. IIRC the 4870 requires 26amps

Hello Vimes, the Nvidia GTX 280 itself does not require 41 amps. If you take the maximum power consumption of an Nvidia GTX 280, it is around 240 watts which equates to 20 amps. Also, the maximum power consumption of an ATI Radeon is around 175 watts which equals to 15 amps.

The system that Ka0ticMind's has mentioned which for arguments sake consists of an Nvidia GTX 280 already, the power supply unit that he already has will be absolutely fine.

 

[Vimes]

Hello Vimes, the Nvidia GTX 280 itself does not require 41 amps. If you take the maximum power consumption of an Nvidia GTX 280, it is around 240 watts which equates to 20 amps.

The maximum power consumption of an ATI Radeon is around 175 watts which equals to 15 amps.

Now, depending on what the rest of Ka0ticMind's system consists off, the power supply unit that he already has will be absolutely fine.

Thanks for posting that

I had seen a number of posts from various forums, with no corroboration provided, to quote the numbers that I noted.

However I have just noted this as posted from the rage3d forums...



http://www.tomshardware.com/reviews/radeon-geforce-comparison,2007-25.html

the above states that the 280 GTX tested used 352w in 3D mode

 

[Fire Wizard]

http://www.tomshardware.com/reviews/radeon-geforce-comparison,2007-25.html

the above states that the 280 GTX tested used 352w in 3D mode

Hello Vimes, the 352 watt rating will be the power consumption of the entire system not just the graphics card alone.

Have a look at this page here and here from the review site, Guru3D.

 

[Vimes]

Hello Vimes, the 352 watt rating will be the power consumption of the entire system not just the graphics card alone.

Have a look on this page here.

Thanks I will have a read, I appreciate your help

I did notice this...

http://www.evga-europe.com/evga-geforce-gtx-2xx-series/evga-geforce-gtx-280-1-gb-ssc-edition.html

minimum of a 550 Watt power supply. (Minimum recommended power supply with +12 Volt current rating of 40 Amps.)

When I briefly tested a BFG GTX OC 280 in my system with an Enermax liberty 500w PSU, using both PCI-e power leads I got black screens pretty frequently when the card entered a 3D mode. IIRC the PSU could supply 32amps.

Replacing the PSU with my OCZ one, as noted above, no such problem occurred.

Still I will have a read at what you have posted

 

[rounddodger]

Manufacturers always overstate the PSU requirements to cover their own back.

 

[Ka0ticMind]

Hiya...thanks for all the replies, i've sent the psu back as it was only purchased last week and i'm going to go for the 800watt model, has to be the gigabyte odin as thats the only modular psu that i'm aware of..that has a 140mm fan..which i need because it's going in a silverstone sugo sg03.

 

[Vimes]

Manufacturers always overstate the PSU requirements to cover their own back.

Agree, although it was my believing what I had read in some forums without necessarily gone into the detail of what had been posted.

As you have linked...

GeForce GTX 260 | 280

* A GeForce GTX 260 requires you to have a 500 Watt power supply unit at minimum if you use it in a high-end system. That power supply needs to have (in total accumulated) at least 38 Amps available on the 12 volts rails.
* A GeForce GTX 280 requires you to have a 550 Watt power supply unit at minimum if you use it in a high-end system. That power supply needs to have (in total accumulated) at least 40 Amps available on the 12 volts rails.

I now understand why my Enermax struggled as the accumulated load was probably beyond its capability.

Thanks for posting those links