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Is my PSU good enough? - Page 2

post #11 of 17
I would recommend against the XFX and instead suggest getting a Sapphire or Gigabyte card. None the less, the XFX card is 9.5" according to newegg.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150605
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post #12 of 17
Thread Starter 
Is the XFX a bad manufacturer or is it just better to get a gigabyte/ sapphire. I am looking at the standard edition
post #13 of 17
Thread Starter 
Is the XFX a bad manufacturer or is it just better to get a gigabyte/ sapphire. I am looking at the standard edition
post #14 of 17
The main difference between the brands is the cooler and Gigabyte/Sapphire generally do a better job at keeping the card temps down without sacrificing too much noise. If I'm not mistaken, I believe the Gigabyte cooler is slightly better than the Sapphire.
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post #15 of 17
Thread Starter 
I think my psu will need a molex to 6 pin adapter will this be ok and does the 7870 come with one ?
post #16 of 17
Thread Starter 
post #17 of 17
Quote:
Originally Posted by williamsd View Post

Will my psu be ok with this card?

http://www.dabs.com/products/best-value-vtx3d-amd-radeon-7870-hd-2gb-pci-express-3-0-hdmi-black-8G9Q.html?src=3

thanks

 

Yeah, but I don't know how good or bad that video card is.  Anyway, here's proof that it should be enough power - at least "on paper":

 

http://www.guru3d.com/articles_pages/amd_radeon_hd_7850_and_7870_review,7.html

 

With one 7870 under full load in their system, their PSU pulled 274W from the wall outlet.  Their CPU was idling, so I have to add 95W for an FX-4100 under full load (this would be the absolute maximum).  So, if the FX-4100 and the 7870 are both under full load at the same time, then the PSU would be pulling 369W from the wall outlet.  Now, the test PSU in the review linked above has about 85% efficiency, so if the PSU is 85% efficient while pulling 369W from the wall outlet, then the system is only pulling about 315W at the most from the PSU.

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It's a computer!
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i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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