What will happen if I cf 290s on a 750w psu?
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tiny voices
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Shneiky
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Depends on what brand and model that PSU is. Low quality brands can't even make 650 even though they say 750. High quality brands continuously sustain 750W and can peak (for milliseconds or a second) at 800. Give us the brand and model of your PSU.
Seladon-1370374
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I wouldn't run those on anything under 800 watts. Things that can happen if your PSU doesn't have enough power for your system are :
- PC resetting all the time
- Games crashing
- Freezes
- Worst case scenario, PSU breaks down, probably burning up some of your other components along with it
- PC resetting all the time
- Games crashing
- Freezes
- Worst case scenario, PSU breaks down, probably burning up some of your other components along with it
What's the brand and model of the psu?
A single R9-290 alone consumes 300w under max load. Crossfire them and that becomes 600w just from the gpus. The i5-4570 will consumes around 84w, and all of those fans take up about 5w each. 600w + 84w + 35w = 719w just from the processor, fans, and gpus. It either won't work or it'll be cutting it very, very close and when you play games, the psu will be under 100% stress.
A single R9-290 alone consumes 300w under max load. Crossfire them and that becomes 600w just from the gpus. The i5-4570 will consumes around 84w, and all of those fans take up about 5w each. 600w + 84w + 35w = 719w just from the processor, fans, and gpus. It either won't work or it'll be cutting it very, very close and when you play games, the psu will be under 100% stress.
MagicPants
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St0rm_KILL3r
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750w psu is required for r9 290 cf. The only reason they say to get 850w because 1. Quality of psu 2. You will get some headroom.
If you have a decent quality psu then r9 290 cf won't be any problem.
If you have a decent quality psu then r9 290 cf won't be any problem.
tiny voices
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RealhardtechX who maintain the most comprehensive power supply database on the internet recommend 1000 watts for 2 x 290s in Crossfire. Realchaos has it about correct above. Your system has the potential to draw over 800 watts at full load and you want to leave about 200 watts headroom. The 1000w recommendation includes headroom to overclock.
http://www.realhardtechx.com/index_archivos/Page362.htm
What will happen with an insufficient power supply? If you are lucky and have a high quality power supply you will just kick in the over current protection and your machine will shut down. If you have a PSU without OCP or it fails it will burn out the power supply and that can take other parts with it including your motherboard/CPU and graphics cards.
http://www.realhardtechx.com/index_archivos/Page362.htm
What will happen with an insufficient power supply? If you are lucky and have a high quality power supply you will just kick in the over current protection and your machine will shut down. If you have a PSU without OCP or it fails it will burn out the power supply and that can take other parts with it including your motherboard/CPU and graphics cards.
tiny voices
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Yeah it does feel great. I was number 13 to get there I believe. Took me forever though! Almost 5 years.
Don't hold me to it but there is talk about actual physical rewards for some badges. What that might be is not set in stone yet but something like case badges has been talked about. I hope that works out. It would be pretty cool to be one of 20 or so people in the world with an actual Tom's Grandmaster badge on your computer.
Don't hold me to it but there is talk about actual physical rewards for some badges. What that might be is not set in stone yet but something like case badges has been talked about. I hope that works out. It would be pretty cool to be one of 20 or so people in the world with an actual Tom's Grandmaster badge on your computer.
tiny voices
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