Seasonic S12ii-520 80plus bronze 520watts enough??

Toggle sidebar Toggle sidebar
M

martinmaroni

Honorable
Oct 4, 2013
15
0
10,510
Hello guys!! I've already bought the following components:

Intel I7 4770
Asus Z87a (i know i didn't need a Z motherboard, but I got a good price combo)
2x4gb Team Vulcan 1600 mhz RAM (will get 2 more in the future)
2 (3 or 4 in the future) HDDs mostly WD Black
1 dvd/cd writer/reader
1 ssd 120 gb
1 usb audio interface
1 or 2 USB midi controllers
1 old 9800gt which i' ll probably not use.
The case is a sentey DS1-4243

I only need the power supply now so, my question is if you think this power supply will be enough for my system since I don't plan on overclocking or hardcore gaming. Im mostly a music (and sometimes video) producer.

I also have in mind a 650w or 750w Sentey sdp which is 80plus. Take in mind that where I live we don't usually get good brands (antec, corsair, high end coolermaster), or they are insanely costly, so its really nice to be able to get a seasonic at decent price. We also have some thermaltake ann extreme power cooler master for example.

Thank you very much!
 
Solution
ko888
The Seasonic S12II-520 Bronze will behave detrimentally when the load is greatly misbalanced towards the +5V and +3.3V rails (i.e. heavily cross-loaded) then the output voltages will deflect more than the acceptable 5% allowed by the ATX12V specifications. This is the drawback of group regulated power supplies.

The Sentey Solid Power SS SDP650-SS or SDP750-SS shouldn't react that way. The only drawback of those two Sentey models is the low quality of the electrolytic capacitors (i.e. CapXon) used in its construction. The manufacturer's 5 year warranty should cover that though.
Sort by date Sort by votes
ko888

ko888

Titan
Feb 18, 2009
16,708
41
84,990
For a system using a single GeForce 9800 GT graphics card NVIDIA specifies a minimum of a 400 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 26 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

The Seasonic S12II-520 Bronze power supply unit, with its maximum combined +12 Volt continuous current rating of 40 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with a single GeForce 9800 GT graphics card. Although this power supply unit doesn't have Haswell certification it may still work with Haswell's C6/C7 power states.
 
Upvote 0 Downvote
ko888

ko888

Titan
Feb 18, 2009
16,708
41
84,990


Sentey doesn't provide any information about Haswell compatibility.

Based on the link to the model you are looking at it should be Haswell compatible since that model uses modern DC to DC convertor circuitry for the +3.3V and +5V rails.
 
Upvote 0 Downvote
ko888

ko888

Titan
Feb 18, 2009
16,708
41
84,990


Haswell processors can enter a sleep state called C6/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.

A suggested work around (i.e. not a solution) was to disable the advanced C6/C7 sleep states in the motherboard's BIOS Setup.
 
Upvote 0 Downvote
ko888

ko888

Titan
Feb 18, 2009
16,708
41
84,990
The Seasonic S12II-520 Bronze will behave detrimentally when the load is greatly misbalanced towards the +5V and +3.3V rails (i.e. heavily cross-loaded) then the output voltages will deflect more than the acceptable 5% allowed by the ATX12V specifications. This is the drawback of group regulated power supplies.

The Sentey Solid Power SS SDP650-SS or SDP750-SS shouldn't react that way. The only drawback of those two Sentey models is the low quality of the electrolytic capacitors (i.e. CapXon) used in its construction. The manufacturer's 5 year warranty should cover that though.
 
Upvote 0 Downvote
Solution
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom