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An odd crossfire? x16 x8 on a 970 board?


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6 replies to this topic

#1 printerandink

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Posted 13 March 2012 - 09:22 PM

How well would this run crossfire? Would it be in the single digits of performance drop over a x16 x16 setup?

http://us.msi.com/product/mb/970A-G46.html#/?div=Overview

Edited by printerandink, 13 March 2012 - 09:24 PM.


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#2 the_patriot11

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Posted 14 March 2012 - 06:42 PM

the top one runs at x16, the bottom one at x8. If your running high end cards in crossfire, you would likely see a performance decrease from a dual x16 setup, but if your only crossfiring low to mid range cards I doubt you will see any difference.

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Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

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#3 DJBPace07

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Posted 15 March 2012 - 05:40 PM

I would like to add that few graphics cards can saturate X16 slots bandwidth. Two X8 cards should offer good performance. I would suggest this interesting article about the differences between using two X16 cards, and two X8 cards.

From the article:

If you are running on a 30" display at 2560x1600 or below, an x8/x8 SLI or CFX configuration will perform the same as a x16/x8 or x16/x16 configuration.

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#4 printerandink

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Posted 15 March 2012 - 11:18 PM

I'm still not sure how this board would perform with both cards in place.

#5 the_patriot11

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Posted 16 March 2012 - 08:53 AM

what cards are you using? like what both me and DJBpace said, in 99% of the time you wont see any difference between a 16x and a 8x and a 16 and 16. Maybe if you were running two high end cards at an extremly high resolution, maybe but unlikely. I run my crossfire setup at 8x and 8x, and it matches up perfectly with the same cards on a 16x and 16x setup. The higher chipset would, in all honestly only come in handy for more features and overclocking.

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Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

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#6 printerandink

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Posted 16 March 2012 - 07:10 PM

I should have typed "I'm not sure if this board can do x16 x8 at the same time or if when it has two cards it does x8 x8. It's odd in that it's a 970 board that has a x16 and x8 as opposed to a x16 and x4. So my understanding of its functioning is poor."

#7 the_patriot11

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Posted 16 March 2012 - 08:24 PM

if im reading the specs properly, it should run at 16x and 8x with both slots in use, but even if it was 8x and 8x I doubt youd see a difference.

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Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

If I don't reply within 24 hours of your reply, feel free to send me a pm.





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