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What size power supply / recommended buys?

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March 27, 2012 8:11:04 AM

I am looking to build a gaming rig and I'm pricing out the parts. I don't have much experience with calculating PSU wattage or figuring out one that will work. The following is my build. If you have any comments on any other parts I'm buying, let me know!


- ASRock P67 EXTREME4 GEN3 LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
- Intel Core i5-2550K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Without IGP BX80623i52550K
- EVGA GeForce GTX 580 1536 MB GDDR5 PCI Express 2.0 2DVI/Mini-HDMI SLI Ready Limited Lifetime Warranty Graphics Card, 015-P3-1580-AR
- Kingston Technology Hyper X 8GB 1600MHz DDR3 Non-ECC CL9 DIMM (Kit of 2) XMP X2 Grey Series KHX1600C9D3X2K2/8GX
- Asus 24xDVD±RW Serial ATA Internal OEM Drive (DRW-24B1ST)
- Western Digital Caviar Blue 500 GB SATA III 7200 RPM 16 MB Cache Bulk/OEM Desktop Hard Drive - WD5000AAKX
- Cooler Master HAF 912 Mid Tower ATX Case (RC-912-KKN1)
- Rosewill RNX-N300 IEEE 802.11b/g/n Wireless-N 2.0 PCI


I'm also looking to eventually OC my CPU and GPU.

Thanks in advance!
March 27, 2012 8:47:25 AM

For your configuration, a Corsair TX650 V2 or a Seasonic X-660 660W should suffice. The former is 80 Plus Bronze certified and non-modular. The latter is 80 Plus Gold, modular and tad more expensive. Internally, both of them are Seasonic made (the best in the PSU market). Given the fact that both of these can provide 100% of the rated capacity (continuous power) at slated efficiency, you would be left with a headroom of nearly 150W for future expansion (considering full load at overclocked frequencies).

Cheers!
March 27, 2012 8:47:32 AM

saspr said:
I am looking to build a gaming rig and I'm pricing out the parts. I don't have much experience with calculating PSU wattage or figuring out one that will work. The following is my build. If you have any comments on any other parts I'm buying, let me know!


- ASRock P67 EXTREME4 GEN3 LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
- Intel Core i5-2550K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Without IGP BX80623i52550K
- EVGA GeForce GTX 580 1536 MB GDDR5 PCI Express 2.0 2DVI/Mini-HDMI SLI Ready Limited Lifetime Warranty Graphics Card, 015-P3-1580-AR
- Kingston Technology Hyper X 8GB 1600MHz DDR3 Non-ECC CL9 DIMM (Kit of 2) XMP X2 Grey Series KHX1600C9D3X2K2/8GX
- Asus 24xDVD±RW Serial ATA Internal OEM Drive (DRW-24B1ST)
- Western Digital Caviar Blue 500 GB SATA III 7200 RPM 16 MB Cache Bulk/OEM Desktop Hard Drive - WD5000AAKX
- Cooler Master HAF 912 Mid Tower ATX Case (RC-912-KKN1)
- Rosewill RNX-N300 IEEE 802.11b/g/n Wireless-N 2.0 PCI


I'm also looking to eventually OC my CPU and GPU.

Thanks in advance!


When looking at powersupplies you should look at the AMPs as well as the watts.
With that setup imo you should go with a single 12v Rail as the graphics card can really use a lot. Bascially any single 12v design with 650watts will be fine even when you overclock.
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March 27, 2012 3:39:12 PM

Thanks for your replies! Very helpful!

My friend is also looking to build a new rig. The only differences are that he is getting an EVGA GTX 560-Ti and an Intel Core-i5 2400. He *might* OC his GPU and possibly *might* go SLI in the future.


He actually already purchased an Antec BP550 Plus:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Will this suit his needs or will he need to return it and get something else since it has three rails? He may not SLI or OC his graphics card so if that makes a difference between being okay or not, let me know.

Thank you
March 27, 2012 3:55:31 PM

saspr said:
Thanks for your replies! Very helpful!

My friend is also looking to build a new rig. The only differences are that he is getting an EVGA GTX 560-Ti and an Intel Core-i5 2400. He *might* OC his GPU and possibly *might* go SLI in the future.


He actually already purchased an Antec BP550 Plus:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Will this suit his needs or will he need to return it and get something else since it has three rails? He may not SLI or OC his graphics card so if that makes a difference between being okay or not, let me know.

Thank you


If he is running stock I wouldn't have thought there would be any issues but wouldn't reccomend overclocking and certainly not man enough for SLI. I reckon his system will be drawing about 400-500 watts. I would suggest he bumps his PSU to 650W
a c 1106 ) Power supply
March 27, 2012 4:35:12 PM

For a system using a single GeForce GTX 580 graphics card NVIDIA specifies a minimum of a 600 Watt or greater power supply that has a combined +12 Volt continuous current rating of 42 Amps or greater and that has at least one 6-pin and one 8-pin PCI Express supplementary power connectors.

For a system using two GeForce GTX 580 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 900 Watt or greater power supply that has a combined +12 Volt continuous current rating of 65 Amps or greater and that has at least two 6-pin and two 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.

Overclocking of the CPU and/or GPU(s) will require an additional increase to the combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The amount of increase required will depend on the magnitude of the overclocks you are trying to achieve.
March 27, 2012 4:47:33 PM

saspr said:
Thanks for your replies! Very helpful!

My friend is also looking to build a new rig. The only differences are that he is getting an EVGA GTX 560-Ti and an Intel Core-i5 2400. He *might* OC his GPU and possibly *might* go SLI in the future.


He actually already purchased an Antec BP550 Plus:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Will this suit his needs or will he need to return it and get something else since it has three rails? He may not SLI or OC his graphics card so if that makes a difference between being okay or not, let me know.

Thank you


I believe that card needs 2 x 6pin PCIe adaptors, so without molex/sata to PCIE convertors the power supply can only run 1 card.
Also looking at the Amps on the 12v rails it is not adequate, EVGA recommends 30a (sounds like they are over estimating to me) on at least one Rail, the Antec only does these (+12V1@22A, +12V2@22A, +12V3@25A)
a c 1106 ) Power supply
March 27, 2012 4:57:52 PM

saspr said:
Thanks for your replies! Very helpful!

My friend is also looking to build a new rig. The only differences are that he is getting an EVGA GTX 560-Ti and an Intel Core-i5 2400. He *might* OC his GPU and possibly *might* go SLI in the future.


He actually already purchased an Antec BP550 Plus:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Will this suit his needs or will he need to return it and get something else since it has three rails? He may not SLI or OC his graphics card so if that makes a difference between being okay or not, let me know.

Thank you

For a system using a single GeForce GTX 560 Ti graphics card NVIDIA specifies a minimum of a 500 Watt or greater power supply that has a combined +12 Volt continuous current rating of 30 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using two GeForce GTX 560 Ti graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 700 Watt or greater power supply that has a combined +12 Volt continuous current rating of 52 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.

The Antec Basiq Series 550W (BP550 Plus), with its combined +12 Volt continuous current rating of 32 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is sufficient to power that system configuration with a single GeForce GTX 560 Ti. It is insufficient to power that system configuration with two GeForce GTX 560 Ti in 2-way SLI mode.
March 27, 2012 5:04:58 PM

read you wrong ^^
a c 1106 ) Power supply
March 27, 2012 5:16:35 PM

bleechy said:
read you wrong ^^

A GeForce GTX 560 Ti draws a maximum of 13.25 Amps from the +12V rail(s) during gaming. It will draw a maximum of 18.2 Amps from the +12V rail(s) when running FurMark.

If you don't run FurMark GPU stress testing then there should be ample combined +12 Volt continuous current capacity available from the Antec Basiq Series 550W (BP550 Plus) to power a system with a single GeForce GTX 560 Ti.
March 27, 2012 8:23:22 PM

ko888 said:
A GeForce GTX 560 Ti draws a maximum of 13.25 Amps from the +12V rail(s) during gaming. It will draw a maximum of 18.2 Amps from the +12V rail(s) when running FurMark.

If you don't run FurMark GPU stress testing then there should be ample combined +12 Volt continuous current capacity available from the Antec Basiq Series 550W (BP550 Plus) to power a system with a single GeForce GTX 560 Ti.


Yes you are right but I think that PSU is just a little too underpowered. I really think he should go for something better like a OCZ ZS Series 750W which will give him expansion in the future and no risk of running out of juice.
a b ) Power supply
March 27, 2012 8:32:20 PM

saspr said:
Thanks for your replies! Very helpful!

My friend is also looking to build a new rig. The only differences are that he is getting an EVGA GTX 560-Ti and an Intel Core-i5 2400. He *might* OC his GPU and possibly *might* go SLI in the future.


He actually already purchased an Antec BP550 Plus:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Will this suit his needs or will he need to return it and get something else since it has three rails? He may not SLI or OC his graphics card so if that makes a difference between being okay or not, let me know.

Thank you


ko888 is right, I use that PSU myself. It has one 8 pin PCI-Express plug (6+2) and one 6 pin PCI-Express plug and just enough power to run a single decent GPU and all the trimmings. On the plus side I have used that thing 4 times for friends builds and it has never failed me.
!