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Old 06-12-2012, 07:11 PM   #1
jcortez1594
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Default What PSU should I use?

I am building a computer and I want to know if the psu I have is enough. I am using the Asus Crosshair V motherboard with the 8 core AMD FX 8150 processor and starting with 12gb ram as well these three graphics cards using crossfire: two Radeon HD 6670 with 2gb DDR3 and a Radeon HD 7770 with 1gb DDR5. I am also planning on adding another one of the 7770 cards. Right now I have a 700W PSU. I also have a second 700W PSU, but I don't know if I can use both of them at the same time. Please give some suggestions Both PSU are http://www.walmart.com/ip/CoolMax-CL...upply/14497475. Thank you!
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Old 06-12-2012, 09:03 PM   #2
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I REALLY wouldn't use a Coolmax power supply on any PC, since they aren't exactly known for quality. Additionally, I doubt that power supply would really be a 700W. Probably more like 400W.

I'd use http://www.walmart.com/ip/Cooler-Mas...1200W/15988271
or
http://www.walmart.com/ip/XFX-1250W-...n-PSU/19612533

If you have to buy from Walmart. If possible, though, I'd buy http://www.newegg.com/Product/Produc...82E16817151110 from Newegg
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Old 06-12-2012, 09:40 PM   #3
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According to AMD:
600W power supply (or greater) with two 75W 6-pin PCI Express power connectors recommended for AMD CrossFire™ technology.
Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
http://www.amd.com/us/products/deskt...on-7770.aspx#3

Here is a review of a better quality CoolMax PSU and it exploded:
http://www.jonnyguru.com/modules.php...Story2&reid=68

Look at this power supply:
http://www.newegg.com/Product/Produc...82E16817194103

http://www.hardwaresecrets.com/artic...Review/1556/11

Seems like a good deal for $65, $45 after rebate.

Suggested PSU are Seasonic, Corsair and XFX.
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Old 06-12-2012, 10:40 PM   #4
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Well, the thing is that I had about $75 in WalMart giftcards so I bought that. Their system messed up and processed it as though I returned one and requested shipment of another. I called to make sure I wasn't charged for a second (even though I don't know how they would charge me when the only payment method they have for me is the giftcard that is now empty) and they behaved as expected from walmart..."The system says you returned this and got another" "I never requested that" "I'm sorry sir, but that is what the system says"...loop loop loop. So I don't know if I could return both and purchase a better one off walmart.com with the giftcards or what and I kinda spent almost all my money on the other components. 18 year old who is self-employed=unsteady income unfortunately. With the ones you suggested, c.hegge, they cost more than twice as much as the one I got.
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Old 06-12-2012, 11:20 PM   #5
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With 3 Graphics cards and an 8-core CPU, 650W might be pushing it somewhat, which is why I suggested the beefier ones, although I guess if they aren't really high end like 6970s, it will probably be enough. If you're gonna go with a 650 Watter, though, I'd use http://www.newegg.com/Product/Produc...82E16817139020 (Corsair TX650 v2)

Quote:
Originally Posted by jcortez1594 View Post
With the ones you suggested, c.hegge, they cost more than twice as much as the one I got.
It will cost you even more if the Coolmax destroys your hardware.

EDIT: If you want to get something from Walmart, then http://www.walmart.com/ip/Antec-750W...upply/15907607 might be an alright option.

Last edited by c.hegge; 06-12-2012 at 11:26 PM.
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Old 06-13-2012, 07:43 AM   #6
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Quote:
Originally Posted by c.hegge View Post
With 3 Graphics cards
I misunderstood his post. I thought he was going to use the two new 7770 cards in crossfire.

What he needs is a good 750W PSU, which you suggested in your last post.
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Old 06-13-2012, 09:51 AM   #7
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I wouldn't recommend Corsair what so ever.My Cx500 V2 is the worst possible choice i ever made.I've changed two of these already in 6 months because of coil noise , buzzing and all of that.If we are at this chapter may i ask if this power supply is good? : Seasonic S12II-520 Bronze 520W . I mean if it is a quality and long lasting power supply not like that Corsair or others with coil noise after a few months.The only thing i'm not sure of at this Seasonic i mentioned above are it's protections, kinda' few.Is that ok? If it matters my system is : AMD Phenom II X4 965 BE ; AMD Radeon HD6850 1 Gb DDR5 ; AsRock M3N78D ; 4 Gb RAm ; HDD Samsung Spinpoint F3 1 TB.
I didn't want to open a new topic that's why i posted here hoping to get answers.Thank's!
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Old 06-13-2012, 01:03 PM   #8
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Seasonic is the premier PSU manufacturer in the world. They actually design and manufacture PSU for other top brands.

Some may argue that Delta may have better soldering or that Super Flower products test as good or better but Seasonic for all around engineering design and manufacturing is the best.

As for your Corsair problems, every product as some problems, it is how the problem is handled that counts. Corsair's customer service is usually among the best as you had the misfortune to encounter.

http://www.hardwaresecrets.com/article/954

A 6850 requires a 500w PSU or better.
http://www.amd.com/us/products/deskt...verview.aspx#3

If you want top quality get the Seaonic X-560.
http://www.hardwaresecrets.com/artic...ly-Review/1118

Last edited by Merman; 06-13-2012 at 01:18 PM.
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Old 06-13-2012, 04:16 PM   #9
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Quote:
Originally Posted by eolianu View Post
I wouldn't recommend Corsair what so ever.My Cx500 V2 is the worst possible choice i ever made.I've changed two of these already in 6 months because of coil noise , buzzing and all of that.If we are at this chapter may i ask if this power supply is good? : Seasonic S12II-520 Bronze 520W . I mean if it is a quality and long lasting power supply not like that Corsair or others with coil noise after a few months.The only thing i'm not sure of at this Seasonic i mentioned above are it's protections, kinda' few.Is that ok? If it matters my system is : AMD Phenom II X4 965 BE ; AMD Radeon HD6850 1 Gb DDR5 ; AsRock M3N78D ; 4 Gb RAm ; HDD Samsung Spinpoint F3 1 TB.
I didn't want to open a new topic that's why i posted here hoping to get answers.Thank's!
The CX v2 series are made by Channel Well (CWT), but the TX v2 series (not the TX-M series) are made by Seasonic, and are a completely different design. The seasonic corsairs never had issues with the coils squealing.
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No wonder it doesn't work! You installed the coils backwards!

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Old 06-13-2012, 11:01 PM   #10
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Merman i know that my 6850 requires a minimum 500 W power supply that's why i got the Corsair.The Seasonic X 560 is way off my budget to expensive for me , but the Seasonic S12II-520 Bronze 520W fits just fine in my budget and my needs + it can deliver up to 588 real Watts if needed with 80+ efficiency which is amazing!! If someone can explain me what exactly the protections do in the case of the S12II 520W?I see it has 3 of them - OVP ,OPP ,SCP. Are these enough?Fits the standars? I'm tired and to nervous to go and change the Corsair with warranty , as soon as i got the $ i will buy the S12II 520 and finish all my problems - no coil noise , no buzzing , no squealing etc.Thanks againg for the info , this site and forum helped me a lot with many pc problems and also opened my eyes! God Bless Gabriel Torres for his work and all of you guys!!
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