Is this 520w PSU good enough for this rig?

TJLano

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Jan 19, 2014
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Hi Tom's Hardware forums,

I'm helping a friend build a new computer and I have picked out most of the parts for his computer.
This is the setup that we will be putting together next week sometime:

i5-4670K
Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Gigabyte GA-Z87x-UD4H Mobo
G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-2133 Memory
MSI GeForce GTX 770 2GB Video Card
Cooler Master HAF 912 ATX Mid Tower Case
Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (Subject to change, but not all that important)

**Antec High Current Gamer 520W 80+ Bronze Certified ATX Power Supply**
Note: it is a single 12V rail.

For a link please see:
http://pcpartpicker.com/p/3rKLT

**The main part in question is the PSU. I included the link for reference, but this PSU will NOT be brand new. It is roughly 2 years old. I will be giving it to him because I no longer need it and it (potentially) saves him money.

I understand that PCpartpicker provides info on estimated Wattage (423W with the present build).
This seems like we have enough power, however I wanted to get other opinions.

I understand that 520W is advertised as a BRAND NEW PSU. Since it's 2 years old, I know it probably won't provide that wattage, but I'm uncertain of the decay of power over time.

My final concern, if it is underpowered, will it potentially do damage to the new parts or are the built-in failsafes in the PSU relatively reliable so that we may see symptoms of the system being underpowered without sustaining and damage to components?

Thank you for taking the time to read this post.

-Tim

 
Solution
there will be two issue one on older power supply and haswell cpu you wont be able to put the pc into low power sleep. older power supply will just shut off. the 520w pc have to look at the 12v rail if it one rail or two and the wattage and amp on the rail. you then want to add the cpu and the gpu wattage see if it close to the 12v rail of the power supply.
there will be two issue one on older power supply and haswell cpu you wont be able to put the pc into low power sleep. older power supply will just shut off. the 520w pc have to look at the 12v rail if it one rail or two and the wattage and amp on the rail. you then want to add the cpu and the gpu wattage see if it close to the 12v rail of the power supply.
 
Solution

wolverine96

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Mar 26, 2014
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It seems like it should be fine, but since it is two years old, it might be a little worn out. It should still be okay, though, and if it can't handle it, it probably will just shut down. I don't think it will break anything. If that happens, though, you will definitely need a new PSU!
 

wolverine96

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Mar 26, 2014
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Yeah, that's pretty much the worst that could happen. If it shuts off while writing a file, it will be corrupt. As long as it's backed up, you can fix that. After you replace the PSU, of course.
 
im not an author but thanks for attention.:)

 

TJLano

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Jan 19, 2014
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Thank you to all that replied.

I did a little more research after reading smorizio's response on "Haswell ready". From the sound of it, as long as the PSU is good quality it shouldn't need to be "Haswell ready". The only feature that will mainly be affected is the low-power sleep state (disabled by the mobo upon installation). The non-Haswell ready PSU cannot support this state and would possibly cause a malfunction or shutdown of the system.

This shouldn't be too much of an issue though, but it's worth bringing up. Overall, I think that the PSU should be adequate. It was not acting up before I changed out my PSU. I was running a build that drew 379W according to PCpartpicker, and a difference of 44W (while still having a higher rated PSU) does not seem all that significant.

I will definitely have a discussion with my friend about the pros and cons of using my older PSU. Ultimately, I'll leave it up to him.

I don't think there should be any issues. In any case, if he decides to get any upgrades I'll suggest increasing wattage to the PSU before adding anything further and making sure it is compatible with Haswell.

Overall, I just wanted to get some opinions on the matter, and I greatly appreciate input from all.

Thank you,
Tim