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Power Supply/Graphic Card Recommandations

Last response: in Graphics & Displays
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July 20, 2012 6:25:05 PM

Hey whats up, i decided to update my computer by buying some new graphic cards and a power supply but im not sure about what i should buy exactly. I got about 250$ to spend on my computer, Of course i'd like to have the best quality for a decent price...

At this moment i am thinking about buying my self 2x nVidia GeForce GT 520 1 GB, since i found that they are really cheap (http://www.amazon.ca/MSI-N520GT-MD1GD3-LP-GeForce-PCI-E...)

But i am not sure if theses are good, i want to run 2 HD Monitors 24 inches, my power supply is 300W now and i know i will have to buy a new power supply because i want 2 graphics cards to run my 2 monitors in HD.

So what would you recommand me ? I am making thses changes to play games without having any lags.

So basically what graphic cards would you recomand me? (I want 2 of them, cheaps, runs 2 HD Monitors, good for gaming)

And what power supply would you recommand with theses 2 graphics cards ? (As i only have 300W now)

Thanks for reading and giving me recommandations.
July 20, 2012 6:36:16 PM

A good card for both is the ATI HD Radeon 6000 and above series. Cheap and efficient.
The power supply would be 500 W

Good Luck!
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a c 196 U Graphics card
a b ) Power supply
July 20, 2012 6:41:48 PM

You don't need 2 graphics cards to drive 1 monitor. 1 card usually drives 2 monitors.

If you dont want to change the power supply, the Radeon HD7750 is the best there is for you.

If you do change the power supply, you could do something like this:

6870
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CX500
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The 6870 should be able to handle 2 monitors (heck it can do 3)
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July 20, 2012 6:54:37 PM

I have 2 Monitors actually, do i need 2 graphics cards to make them both HD? like there is only 1 HDMI port per graphic card, so i though i needed 2 cards to make both of my monitors HD ? And with the Radeon HD 6870, a 300W PSU is enough ?
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a b U Graphics card
a b ) Power supply
July 20, 2012 6:55:17 PM

Any good 450-650W PSU, $70-100
Radeon HD6850, ~$150 or HD6870, ~$180

The HD6850/6870 may cost about twice as much as a pair of 520GT but they are also going to be about twice as fast due to having ~4X as much memory bandwidth and lumping everything on a single GPU also makes things much more efficient.
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a c 196 U Graphics card
a b ) Power supply
July 20, 2012 6:57:22 PM

There are 2 DVI ports on the rear of that card. DVI sends out the same signal HDMI does with no difference other than the fact that HDMI has sound. You can get a DVI to HDMI adapter OR you can get a Display Port (the other port on the card that is not HDMI and DVI) to HDMI adapter if both of your monitors are HDMI only. Are both of your monitors HDMI only?
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a b U Graphics card
a b ) Power supply
July 20, 2012 7:04:06 PM

Hakkar55 said:
I have 2 Monitors actually, do i need 2 graphics cards to make them both HD? like there is only 1 HDMI port per graphic card, so i though i needed 2 cards to make both of my monitors HD ? And with the Radeon HD 6870, a 300W PSU is enough ?

You can do HD on VGA, DVI, DP and HDMI ports. Modern GPUs can drive at least three outputs simultaneously but you may need adapter dongles/cables to use all available outputs if your display has different input requirements. Although the connection mix has changed over time, driving dual displays at resolutions up to 2048x1536 has been standard on almost all GPUs manufactured in the past 10 years.

As for the PSU, most OEM PSUs are pieces of junk whose lifespan would get severely shortened by such a setup assuming it works at all so whichever way you decide to go, you will most likely have to at least upgrade to a quality 450W PSU.
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a c 196 U Graphics card
a b ) Power supply
July 20, 2012 7:04:46 PM

Didn't realized you asked if 300W was enough.

It is not.
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July 20, 2012 7:10:54 PM

So acutally i should be good with a Radeon HD 6870 and a DVI to HDMI adapter for my both screens to be HD? Then i would need a new PSU, how much powerfull should it be for my Radeon HD 6870 run without any problem ?
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July 20, 2012 7:22:04 PM

Okay, one more question, it is better to have only 1x Radeon 6870 then 2x graphics cards of 1GB each ?
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a c 196 U Graphics card
a b ) Power supply
July 20, 2012 7:25:20 PM

It depends, if you have 2 6870's its going to be faster.

But if you are using 2 like GT520's or something its going to suck.

Just go for the 6870.
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July 20, 2012 7:27:40 PM

Alright, ill order 6870 and that Corsair 500W PSU, i hope i won't reget :p  Thanks for helping me !
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a c 196 U Graphics card
a b ) Power supply
July 20, 2012 7:46:33 PM

No prob. You'll love it.
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a b U Graphics card
a b ) Power supply
July 20, 2012 7:55:41 PM

Hakkar55 said:
Alright, ill order 6870 and that Corsair 500W PSU, i hope i won't reget :p  Thanks for helping me !

2x 520GT = moderate improvement
1x HD6850 = considerable leap

Many titles have problems scaling smoothly with multi-GPU while nearly all scale very nicely with more powerful single GPUs.

Having 2-4 cards with 1GB each and 64bits RAM interface has little to no advantage over a single more powerful card with 1GB and 128/256bits interface since most of the multi-GPU setup's memory gets used up by texture, geometry, shader code and frame buffer duplication: every GPU working on the same/similar scene involving the same textures, shaders, etc. needs a copy of all that data. The single GPU option also has the added benefits of being able to access any of that code/data nearly four times as fast and consequently rendering individual frames that much faster, which reduces the input-to-output lag.
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