Q. This summer I plan on building my own gaming PC and assembling it at home because it is cheaper and I like to customize things myself. It is an 850 dollar computer but the specs are exceptional. For the motherboard and processor, I am following a YouTube tutorial. In the YouTube video it says only 500 watts of power are needed, but in the comment section somebody (who was picked for best answer) claims that you actually need at least 630. I am planning on getting a 750 watt battery anyways, but if I don't need to, I'll try and get something cheaper. So how much power will I need based on this setup:
Processor:
Intel Core i5-3470 Quad-Core Processor 3.2 GHz 4 Core LGA 1155 - BX80637I53470 – ($188.79)
http://www.amazon.com/gp/product/B0087EVHVW/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0087EVHVW&linkCode=as2&tag=c09_11-20
Graphics Card:
Gigabyte Radeon HD 7850 Graphics Card (2GB) – ($194.99)
http://www.amazon.com/Gigabyte-mini-Displayport-PCI-Express-Graphic-GV-R785OC-2GD/dp/B007PJTNYS/ref=sr_1_1?s=electronics&ie=UTF8&qid=1365971519&sr=1-1&keywords=amd+radeon+hd+2+gigabyte
Motherboard:
MSI LGA1155/Intel B75/DDR3/SATA3 USB 3.0/A&GbE/MicroATX Motherboard B75MA-P45 – ($64.99)
http://www.amazon.com/gp/product/B008S8WA18/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B008S8WA18&linkCode=as2&tag=c09_11-20
Ram:
Corsair Vengeance 8 GB (2 x 4 GB ) – ($59.98)
http://www.amazon.com/gp/product/B004CRSM4I/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B004CRSM4I&linkCode=as2&tag=c09_11-20
Hard Drive:
500GB Western Digital Caviar Blue Hard Drive – ($59.99)
http://www.amazon.com/gp/product/B00461G3MS/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00461G3MS&linkCode=as2&tag=c09_11-20
Power Supply:
Corsair CX750 Builder Series ATX 80 PLUS Bronze Certified Power Supply (750W) – ($88.24)
http://www.amazon.com/gp/product/B0092ML0MY/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0092ML0MY&linkCode=as2&tag=c09_11-20
Optical Drive:
Asus 24xDVD-RW Serial ATA Internal OEM Drive DRW-24B1ST (Black) – ($20.04)
http://www.amazon.com/Asus-24xDVD-RW-Serial-Internal-DRW-24B1ST/dp/B0033Z2BAQ/ref=sr_1_2?s=electronics&ie=UTF8&qid=1365953829&sr=1-2&keywords=optical+drive
Tower:
NZXT Technologies SOURCE 220 CA-SO220-01 Matt Steel Mesh Front Mid Tower Case with USB 3.0 – ($68.98)
http://www.amazon.com/gp/product/B0066130AO/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0066130AO&linkCode=as2&tag=c09_11-20
Operating System:
Windows 7 System Builder – ($95.88)
http://www.amazon.com/gp/product/B0094NY3R0/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0094NY3R0&linkCode=as2&tag=c09_11-20
(Monitor:)
ASUS VS197D-P 18.5-Inch HD LCD Monitor – ($89.24)
http://www.amazon.com/ASUS-VS197D-P-18-5-Inch-LCD-Monitor/dp/B005PAIVII/ref=sr_1_3?ie=UTF8&qid=1365972998&sr=8-3&keywords=Cheap+Computer+Monitors+Under+100
Processor:
Intel Core i5-3470 Quad-Core Processor 3.2 GHz 4 Core LGA 1155 - BX80637I53470 – ($188.79)
http://www.amazon.com/gp/product/B0087EVHVW/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0087EVHVW&linkCode=as2&tag=c09_11-20
Graphics Card:
Gigabyte Radeon HD 7850 Graphics Card (2GB) – ($194.99)
http://www.amazon.com/Gigabyte-mini-Displayport-PCI-Express-Graphic-GV-R785OC-2GD/dp/B007PJTNYS/ref=sr_1_1?s=electronics&ie=UTF8&qid=1365971519&sr=1-1&keywords=amd+radeon+hd+2+gigabyte
Motherboard:
MSI LGA1155/Intel B75/DDR3/SATA3 USB 3.0/A&GbE/MicroATX Motherboard B75MA-P45 – ($64.99)
http://www.amazon.com/gp/product/B008S8WA18/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B008S8WA18&linkCode=as2&tag=c09_11-20
Ram:
Corsair Vengeance 8 GB (2 x 4 GB ) – ($59.98)
http://www.amazon.com/gp/product/B004CRSM4I/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B004CRSM4I&linkCode=as2&tag=c09_11-20
Hard Drive:
500GB Western Digital Caviar Blue Hard Drive – ($59.99)
http://www.amazon.com/gp/product/B00461G3MS/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00461G3MS&linkCode=as2&tag=c09_11-20
Power Supply:
Corsair CX750 Builder Series ATX 80 PLUS Bronze Certified Power Supply (750W) – ($88.24)
http://www.amazon.com/gp/product/B0092ML0MY/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0092ML0MY&linkCode=as2&tag=c09_11-20
Optical Drive:
Asus 24xDVD-RW Serial ATA Internal OEM Drive DRW-24B1ST (Black) – ($20.04)
http://www.amazon.com/Asus-24xDVD-RW-Serial-Internal-DRW-24B1ST/dp/B0033Z2BAQ/ref=sr_1_2?s=electronics&ie=UTF8&qid=1365953829&sr=1-2&keywords=optical+drive
Tower:
NZXT Technologies SOURCE 220 CA-SO220-01 Matt Steel Mesh Front Mid Tower Case with USB 3.0 – ($68.98)
http://www.amazon.com/gp/product/B0066130AO/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0066130AO&linkCode=as2&tag=c09_11-20
Operating System:
Windows 7 System Builder – ($95.88)
http://www.amazon.com/gp/product/B0094NY3R0/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0094NY3R0&linkCode=as2&tag=c09_11-20
(Monitor:)
ASUS VS197D-P 18.5-Inch HD LCD Monitor – ($89.24)
http://www.amazon.com/ASUS-VS197D-P-18-5-Inch-LCD-Monitor/dp/B005PAIVII/ref=sr_1_3?ie=UTF8&qid=1365972998&sr=8-3&keywords=Cheap+Computer+Monitors+Under+100
A. 500W (or greater) power supply with one 75W 6-pin PCI Express power connector recommended
http://www.amd.com/us/products/desktop/graphics/7000/7850/Pages/radeon-7850.aspx#2
Thus, for a system with a single HD7850, a good branded 600W PSU is the ideal one to get and since your mobo does not support crossfire, then that 750W is too much for that build since Xfire is already not possible.
BTW, for Xfire, amd recommends 600W minimum, thus 700W is the ideal one to have (just an added info).
http://www.amd.com/us/products/desktop/graphics/7000/7850/Pages/radeon-7850.aspx#2
Thus, for a system with a single HD7850, a good branded 600W PSU is the ideal one to get and since your mobo does not support crossfire, then that 750W is too much for that build since Xfire is already not possible.
BTW, for Xfire, amd recommends 600W minimum, thus 700W is the ideal one to have (just an added info).
How good will my computer run?
Q. Im building my own computer and I am trying to keep it under 750, as of right now Im planning on getting Intel Core i3-3220, Western Digital Caviar Blue 500 GB Hard drive, MSI R7850 Twin Frozr, FSP Group RAIDER 550W power supply, G.SKILL Value Series 8GB (2 x 4GB) 240-Pin memory, and ASRock Z77 Extreme4. Is there something I should replace or would this be a good model? And how would it run the new games like Crysis 3 or Battlefield 3?
A. Let me tell you i have recently answered a question similar to this being that the person also wanted a system around $700. If i were you i would go for the intel i7 3770k for $240 from microcenter and the radeon hd 7970 from ebay running at $350 both great computer parts that should last you a long time. And most importantly in your budget. If you look for special deals you can find a 1tb internal hard drive for $80 possible 7200rpm. The motherboard should be perfect if you do decide on the 7970 or a 7950 with the intel i7 3770k. Plus if you wanted to upgrade another 7900 series gpu it would be simple and not a hassle of buying another board.
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