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 is the compaq presario sr5710f?
Q. I am looking for something under 500 dollars and this one caught my eye. Is it a decent computer for gaming, etc.?
A. Current Dell deals,
http://www.techbargains.com/dellcoupons.cfm
For example, one current sale is a Dell Vostro 220, with an E7500 CPU (Core 2 Duo 2.93 GHz) and 22" LCD monitor for $409,
http://configure.us.dell.com/dellstore/config.aspx?c=us&cs=04&l=en&s=bsd&kc=&oc=brcwa1p&dgc=BF&cid=27740&lid=1204709&acd=10689810-227502-A11A0C173848E1A01173691A0
The Vostro 220 comes with a smallish 300W power supply (with only 18A on a single +12V rail), but I suspect this low powered version 9600GT would still run. You would just have to try it, and see how stable it is. (If it's not 100% stable, you would need to upgrade the power supply as well, for about $50 more.)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130485
Considering the price range, an E7500 CPU and 9600GT video card would run games quite well.
http://www.techbargains.com/dellcoupons.cfm
For example, one current sale is a Dell Vostro 220, with an E7500 CPU (Core 2 Duo 2.93 GHz) and 22" LCD monitor for $409,
http://configure.us.dell.com/dellstore/config.aspx?c=us&cs=04&l=en&s=bsd&kc=&oc=brcwa1p&dgc=BF&cid=27740&lid=1204709&acd=10689810-227502-A11A0C173848E1A01173691A0
The Vostro 220 comes with a smallish 300W power supply (with only 18A on a single +12V rail), but I suspect this low powered version 9600GT would still run. You would just have to try it, and see how stable it is. (If it's not 100% stable, you would need to upgrade the power supply as well, for about $50 more.)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130485
Considering the price range, an E7500 CPU and 9600GT video card would run games quite well.
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