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Looking for a GC that supports 2560x1440 but consumes <300w

Last response: in Graphics & Displays
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December 6, 2012 8:22:21 PM

Dear all, could anybody recommend a GC that supports 2560x1440 but consumes <300w power? I have a HP Pavilion p7-1380t (http://h20000.www2.hp.com/bizsupport/TechSupport/Docume...) of which integrated HD graphics doesn't support 2560x1440 and outputs 300w power only. I tried a HP-recommended EVGA GeForce GT 620 1GB 64-bit DDR3 PCI Express 2.0 x16, http://www.newegg.com/Product/Product.aspx?Item=14-130-..., but it needs 300-350w power and the Dell U2713HM display blinks from time to time. Many thanks!
December 7, 2012 3:53:44 AM

BTW, the MB has a PCI Express 2.0 x16, is it compatible with PCIe 2.1 GC?
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a b U Graphics card
December 7, 2012 4:14:35 AM

A PCI3-3.0 card will even work on a PCIe-1.0 slot, it's all backward compatible.

A GT 620 saps under 50w, and is more than capable of running on even the worst PSU's.

Are you using an HDMI, DVI-I or VGA cable for connecting to your monitor?
The blue one is VGA, the white larger one is DVI-I and the middle black one is HDMI.
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a b U Graphics card
December 7, 2012 4:41:50 AM

get a 7750.
it consumes just 55 watts of power and can actually game pretty good too though only at 1080p or lower
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December 7, 2012 4:49:50 AM

I use DVI-D to connect the DVI-D on U2713HM and the female DVI-I on the GC

azathoth said:
A PCI3-3.0 card will even work on a PCIe-1.0 slot, it's all backward compatible.

A GT 620 saps under 50w, and is more than capable of running on even the worst PSU's.

Are you using an HDMI, DVI-I or VGA cable for connecting to your monitor?
The blue one is VGA, the white larger one is DVI-I and the middle black one is HDMI.

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a b U Graphics card
December 7, 2012 7:35:03 AM

wereeagle said:
Thanks but http://www.newegg.com/Product/Product.aspx?Item=N82E168...
says it needs minimum of 400w power supply:( 


they say it coz a lot of people use low quality power supplies which have misleading information on the real wattage of the psu.
however your psu will run it just fine. i myself run a 7750 on a 350 watts coolermaster elite with no problems
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a c 291 U Graphics card
December 7, 2012 8:19:44 AM

GT 620 consumes less power than HD 7750. Also, it should run on your computer without any problems. Could you describe the "blackouts"? We could maybe resolve them.

The only real alternative that uses less power is GT 610.
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December 7, 2012 4:01:29 PM

It's blinking of the lower 1/3 or half of the Dell U2713HM display, lasting about 1 min, with different intervals; sometimes longer, sometimes shorter, ~5-10 min. Now I take out the GT620, using the integrated Intel HD 2000, never blinks. I'll try to upload some video later. Thanks a lot!

Sunius said:
GT 620 consumes less power than HD 7750. Also, it should run on your computer without any problems. Could you describe the "blackouts"? We could maybe resolve them.

The only real alternative that uses less power is GT 610.

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a c 291 U Graphics card
December 7, 2012 4:20:22 PM

A video would help imagining what's happening. You're using DVI-DL cable to connect the graphics card to the monitor, correct?
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December 7, 2012 4:54:34 PM

A DVI-D male connecting a DVI-D female on the display and a DVI-I female on GT620. I also tried a HDMI, but that version doesn't support 2560x1440, haven't got chance to try higher version of HDMI

Sunius said:
A video would help imagining what's happening. You're using DVI-DL cable to connect the graphics card to the monitor, correct?

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a c 291 U Graphics card
December 7, 2012 5:31:03 PM

I suppose the resolution is set correctly to 2560x1440?
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December 7, 2012 5:38:06 PM

yes. Still wonder if it's the power supply, not enough to drive GT620?
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a c 291 U Graphics card
December 7, 2012 6:06:57 PM

If it was the power supply issue, not only your video would disappear, but the PC would restart. Still waiting for the video :) .
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a c 291 U Graphics card
December 7, 2012 8:22:40 PM

Looks like the cable is the culprit. I suppose you don't have another one to try? Though, if a different cable doesn't help, it means you should contact the warranty and let them fix the card.
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December 7, 2012 9:01:05 PM

It's a DVI-D male cable coming with the 27' display, connecting a DVI-D female on the display and a DVI-I female on GT620, that shouldn't be a problem, right? I've returned the card to newegg, will try some other ones...that's where I need some suggestion.

On p7-1380t page, it says:
Must select one of the following options:
Intel Graphics Media Accelerator HD Integrated Graphics
GeForce GT 530 (2 GB)
GeForce GT 620 (1 GB)
GeForce GT 630 (2 GB)
GeForce GT 640 (3 GB)
Radeon HD 7350 (512 MB)
Radeon HD 7450 (1 GB)
Radeon HD 7570 (2 GB)

620 is one of those...perhaps it's indeed a bad card. How about AMD HD6450? Those fanless GC should require lower power supply, right?
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a c 291 U Graphics card
December 8, 2012 9:11:09 AM

Yea it's a very low powered card. If you can get it cheap, it will work.
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December 12, 2012 4:16:39 PM

another thought: the integrated Intel HD 2000 graphics should not interfere with the external GC, right? Or should I somehow disable it after installing an external GC?
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!