SAPPHIRE Vapor-X 100351VXSR Radeon HD 7970 run three monitors? NOT at the same time - AVS Forum
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post #1 of 10 Old 12-15-2012, 06:34 PM - Thread Starter
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I am building a new HTPC that will also be my daily work computer.

The computer/HPTC will NOT be used for gaming.

  • Silverstone CW02 case
  • ASUS Rampage IV Extreme LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 Extended ATX Intel Motherboard (if it fits)
  • Intel Core i7-3930K Sandy Bridge-E 3.2GHz (3.8GHz Turbo) LGA 2011 130W Six-Core Desktop Processor
  • G.SKILL Ripjaws Z Series 64GB (8 x 8GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) RAM


And for the video card, I am looking at;SAPPHIRE Vapor-X 100351VXSR Radeon HD 7970 GHz Edition 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card



Will this GPU run three monitors?
  • Two 27" desktop monitors for work
  • One through a Marantz SR7007 AVR to a JVC X30 projector
  • NOT all at the same time.


From the GPU I would like to;
  1. Use the HDMI out to the AVR - running the audio and video for the projector
  2. Use the two DVI outs with two 50ft HDMI to DVI Adapter Cable to the 27" monitors HDMI inputs


Or I may just use standard HDMI cables with DVI to HDMI converters

Will this setup work? I am not planning on running all three outputs at the same time, either the two desktop monitors or just the projector.
Or do I need a second video card?



Thanks, Eric.
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post #2 of 10 Old 12-16-2012, 10:31 AM - Thread Starter
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Help? Somebody?
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post #3 of 10 Old 12-16-2012, 10:50 AM
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Yeah it should work. You'll just have to change which monitor you want to use manually between one of the DVI outputs and the HDMI output. Although I have to point out, since your not going to game, why the 7970? If you went with a cheaper card you could almost build a second dedicated HTPC. Just a thought.
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post #4 of 10 Old 12-16-2012, 04:13 PM
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I have the same card, there are 4 different connectors (2DVI, 1 HDMI and 1 Display port).

You can hook up at least 4 without adapters (6 is the limit).

This card is somewhat overkill for ordinary BD playback, it is a highly capable GPU compute card. I use it for the MadVR GPU based renderer and SVP , a motion compensated frame rate converter based on OpenCL. Render times are almost 2X faster than the GTX680 I had before.
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post #5 of 10 Old 12-16-2012, 07:15 PM
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You'll have to get two and run those in crossfire...
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post #6 of 10 Old 12-16-2012, 07:33 PM
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Quote:
Originally Posted by jprovence View Post

You'll have to get two and run those in crossfire...

CF means using Radeon cores of two or more cards simultanelously for better gaming performance. The output connectors of the other card(s) will be disabled.

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post #7 of 10 Old 12-16-2012, 08:06 PM
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Quote:
Originally Posted by renethx View Post

CF means using two cards' shader units for better gaming performance. The output connectors of the other card will be disabled.

I know, I was just joking. Talking about overkill and all.
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post #8 of 10 Old 12-16-2012, 08:50 PM
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Not overkill at all if you use madVR.

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post #9 of 10 Old 12-16-2012, 09:54 PM
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Quote:
Originally Posted by renethx View Post

Not overkill at all if you use madVR.

I see 85% load just with MadVR without SVP for 4K playback Jinc4 + AR on Chroma and Luma
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post #10 of 10 Old 12-16-2012, 10:01 PM
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Quote:
Originally Posted by renethx View Post

CF means using Radeon cores of two or more cards simultanelously for better gaming performance. The output connectors of the other card(s) will be disabled.

Do you know if 2 cards in crossfire will share the load in OpenCL?
Load is shared across 2 cards in SLI with Nvidia.

SVP interpolating to 4K 24fps->60fps will require another 7970 by itself.
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