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HD 5770 crossfire power requirements

Last response: in Graphics & Displays
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June 23, 2010 6:05:50 AM

Hello,

Hi,

Iam planning to buy a HD 5770 and my system specifications are:

4GB DDR3 Ram
Intel Core i3 Processor 530
Cooler Master GX 550W with 42 amps on the +12V rail

WIll i be able to run a HD 5770 2 way crossfire with a 550W power supply. it has enough +12v amps though i.e, 42 amps.
June 23, 2010 7:09:32 AM

For the GPU your PSU should be fine. For a single card configuration you need at least a 450 W PSU with a current rating of at least 24 Amperes on the +12V. As for the rest of your computer... if you don't have to much other hardware and power drawing devices you should be fine.

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June 23, 2010 7:18:40 AM

well i think i've got it.

but can you suggest me a socket 1156 motherboard for i3 processor which can do a crossfire (x16, x16) for 2 HD 5770's. Please suggest me a budget motherboard
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June 23, 2010 7:29:12 AM

Have you checked MSI H55-GD65?
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June 23, 2010 7:35:33 AM

irfan88 said:
well i think i've got it.

but can you suggest me a socket 1156 motherboard for i3 processor which can do a crossfire (x16, x16) for 2 HD 5770s. Please suggest me a budget motherboard


let me reiterate myself. For a single 5770 card configuration your 550 W PSU is more than enough for 2 X 5770s it may be cutting it close.

From the ATi/AMD website:
Quote:
600 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode
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June 23, 2010 8:04:06 AM

I've just read a review for GX 750 and it is quite disappointing. With yours as it smaller sibling, I'd say it would also contain the same components as the GX 750 and only differ in capacity. I would not be keen towards running your PSU at greater loads. But hey, I'm not the power guru so someone might be able to say something different about power consumption of 2 5770s.

I also have 2 5770's in CF running on top of HX620 and they're fine. Not to mention that hardwaresecrets tested this PSU to run beyond its rated power (~700w).
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June 23, 2010 8:25:06 AM

will this motherboard be fine if I dont plan to crossfire the HD 5770. The motherboard's called Biostar TH55B HD. Here check it out.


http://www.biostar.com.tw/app/en/t-series/introduction....


and can I run all games at maximum settings say (1680 x 1050) resolution with one HD 5770 on this motherboard. Please reply ASAP
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June 23, 2010 8:25:15 AM

will this motherboard be fine if I dont plan to crossfire the HD 5770. The motherboard's called Biostar TH55B HD. Here check it out.


http://www.biostar.com.tw/app/en/t-series/introduction....


and can I run all games at maximum settings say (1680 x 1050) resolution with one HD 5770 on this motherboard
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June 23, 2010 8:42:37 AM

irfan88 said:
well i think i've got it.

but can you suggest me a socket 1156 motherboard for i3 processor which can do a crossfire (x16, x16) for 2 HD 5770's. Please suggest me a budget motherboard


Here are Crossfire mobos that have one @ x16 and the 2nd pci e x16 running @ x8 or x4 ok

2nd PCI e x16 @ X8: GIGABYTE GA-P55A-UD4P

2nd PCI e x16 @ x4: GIGABYTE GA-P55M-UD2

Once again I would look into the PSU/ Crossfire issue before buying anything though
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June 23, 2010 8:48:00 AM

Ok i get it. but will this be fine to run a single HD 5770. its a HD motherboard and has overclocking features rooted into the bios itself.



http://www.biostar.com.tw/app/en/t [...] p?S_ID=466


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June 23, 2010 8:58:07 AM

I think it would be fine at running a single 5770. Overclocking? You can but I'm not sure about the mobo's heat dissipating capability to say if it is good or not. Get a decent CPU cooler if your planning to do so.
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June 23, 2010 9:06:12 AM

and will the games run fine with this motherboard paired with a HD 5770 and a i3 930 processor
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July 11, 2010 4:27:12 PM

irfan88 said:
and will the games run fine with this motherboard paired with a HD 5770 and a i3 930 processor


multi gpu system loves powerful processor.......i mean quad or a hex at a resonable clock speed :) 
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July 11, 2010 4:49:05 PM

Yeah you sure need to buy around 750watt PSU to make when you make a crossfire and does t have a problem
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October 9, 2010 12:04:16 PM

This topic has been closed by Mousemonkey
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