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Is my PSU good enough for an R9 280x ?

Tags:
  • Power Supplies
  • Power
  • Intel i5
  • Asus
  • GPUs
  • Radeon
Last response: in Graphics & Displays
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July 16, 2014 2:30:22 PM

I have a 500w 80 plus Bronze CM real power PSU and an intel i5 4670k so can i replace my Asus R9 270 with an Asus R9 280x and how good will it run ? (btw dont need reccomendations for a Saphire or MSI R9 cus only Asus available)

More about : psu good 280x

a b ) Power supply
a b Ĉ ASUS
July 16, 2014 2:34:02 PM

What are the amps on the 12V rails?
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a c 2488 ) Power supply
a c 394 Ĉ ASUS
July 16, 2014 2:42:49 PM

It's a poor power supply and it's not Haswell compatible.
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July 18, 2014 12:47:42 PM

SR-71 Blackbird said:
It's a poor power supply and it's not Haswell compatible.


what do you mean its not hasswell compatible ?
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July 18, 2014 2:20:07 PM

Your intel cpu is a Haswell.
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July 19, 2014 2:24:37 AM

Embra said:
Your intel cpu is a Haswell.


I know that but i dont know what does he mean by the PSU is not haswell compatible ?
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July 19, 2014 8:29:44 AM

Intel does not recommend it for their Haswell chips. Not to say it will not work, just that they do not indorse it.

One thing about PSUs. They are probably the most important part in a computer build for gaming, and A good one will pay for itself over several rebuilds into the future. You do not need to spend tons of money to get one that will satisfy this.
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a c 2488 ) Power supply
a c 394 Ĉ ASUS
July 19, 2014 8:43:29 AM

When an Intel Core (i3, i5, i7) processor is idle, it goes into a sleep state that requires less power than when the CPU is active. Since the motherboard voltage regulation modules that provide power to the CPU gets their power from the power supply's +12V rail, these sleep states can dramatically reduce the load on the power supply's +12V rail.

According to Intel's presentation at IDF, the new Haswell processors enter a sleep state called C7 that can drop processor power usage as low as 0.05A. Even if the sleeping CPU is the only load on the +12V rail, most power supplies can handle a load this low. The potential problem comes up when there is still a substantial load on the power supply's non-primary rails (the +3.3V and +5V). If the load on these non-primary rails are above a certain threshold (which varies by PSU), the +12V can go out of spec (voltages greater than +12.6V). If the +12V is out of spec when the motherboard comes out of the sleep state, the PSU's protection may prevent the PSU from running and will cause the power supply to "latch off". This will require the user to cycle the power on their power supply using the power switch on the back of the unit.

While we are still working with Intel on the details of the testing methodology they use to check PSUs for Haswell compatibility, it is already known that a power supply that uses DC to DC for the non-primary rails (the +3.3V and +5V) will not have an issue with the new low power sleep states. This is because a DC to DC buck converter is used to convert +12V to +3.3V and +5V. This means that no matter what load the CPU puts on the power supply, there will always be a load on the +12V because the +12V is required to provide power to +3.3V and +5V.

Corsair utilizes this DC to DC technology in most of their power supplies. Starting with the CX750 and CX750M and moving all of the way through the GS Series, TX and TX-M Series, the HX Series, both the AX Series Gold and AX Series Platinum, and the new AXi Series. So whatever your budget, if you choose Intel's new Haswell processor and wish to utilize the new, low power C7 sleep state, Corsair has a power supply for you.

corsair.com
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July 20, 2014 3:06:13 PM

SR-71 Blackbird said:
When an Intel Core (i3, i5, i7) processor is idle, it goes into a sleep state that requires less power than when the CPU is active. Since the motherboard voltage regulation modules that provide power to the CPU gets their power from the power supply's +12V rail, these sleep states can dramatically reduce the load on the power supply's +12V rail.

According to Intel's presentation at IDF, the new Haswell processors enter a sleep state called C7 that can drop processor power usage as low as 0.05A. Even if the sleeping CPU is the only load on the +12V rail, most power supplies can handle a load this low. The potential problem comes up when there is still a substantial load on the power supply's non-primary rails (the +3.3V and +5V). If the load on these non-primary rails are above a certain threshold (which varies by PSU), the +12V can go out of spec (voltages greater than +12.6V). If the +12V is out of spec when the motherboard comes out of the sleep state, the PSU's protection may prevent the PSU from running and will cause the power supply to "latch off". This will require the user to cycle the power on their power supply using the power switch on the back of the unit.

While we are still working with Intel on the details of the testing methodology they use to check PSUs for Haswell compatibility, it is already known that a power supply that uses DC to DC for the non-primary rails (the +3.3V and +5V) will not have an issue with the new low power sleep states. This is because a DC to DC buck converter is used to convert +12V to +3.3V and +5V. This means that no matter what load the CPU puts on the power supply, there will always be a load on the +12V because the +12V is required to provide power to +3.3V and +5V.

Corsair utilizes this DC to DC technology in most of their power supplies. Starting with the CX750 and CX750M and moving all of the way through the GS Series, TX and TX-M Series, the HX Series, both the AX Series Gold and AX Series Platinum, and the new AXi Series. So whatever your budget, if you choose Intel's new Haswell processor and wish to utilize the new, low power C7 sleep state, Corsair has a power supply for you.

corsair.com


I do not seem to understand the benefits of the C7 sleep state so do you mind explaining them to me ? Do i get better performance ?
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