[SOLVED] Rog Crosshair VII Hero Won't recognize two graphics cards at the same time

Hi all got this motherboard the other day and I’m having a strange issue with it. it will only recognize the graphics card in the top pcie slot.

Any graphics card in the second pcie 16x size slot isn’t recognized(by recognized i mean it doesn’t show up in the bios). I have not tried putting the graphics cards in the 4x slot at the bottom of the motherboard because my case wont fit it and i don’t want one of my graphics cards going through such a slow slot.

http://dlcdnet.asus.com/pub/ASUS/mb/SocketAM4/ROG_CROSSHAIR-VII-HERO/E13835_ROG_CROSSHAIR_VII_HERO_UM_WEB.pdf

I’m using a vega 64 and a GTX 970. So am i screwed here because by what this manual says at page 24 it seems that you can’t use the two fast pcie slots with a vega graphics card you can only use one.
I don’t know if i should just return the motherboard and get a different one.
Any wisdom would be helpful.

I would imagine that this would be the easiest approach possible.

… I am sorry but apart from that there’s not much more I can say on the situation, I mean if it’s a software compatibility issue, then it could potentially be hacked somehow… If it’s a hardware compatibility issue, realistically there’s not a lot you can do… And even if you do tinker with the motherboard, there’s a good chance the warranty could become void… :stuck_out_tongue:

Maybe someone else can be of more help somehow… But honestly, if I’m just being straight up with you, the easiest option would without a doubt be to swap the motherboard for something that is compatible.


Conclusion

Whilst it this answer doesn’t really help in the sense of solving the problem, I hope my personal insight has helped, if it were me I’d return the motherboard and ask for a refund. It just makes life easier that way :slight_smile:

But be specific in asking for a refund, they may just assume that there’s something wrong with it and they may just ship you out another one to make up for the fault(s) with the original. - Pro Tip

Origin Of My Pro Tip

Be boldly specific you want a refund.

I’ve had a company ship a HDD out to me, arrived dead, I thought screw it, go down to the local computer hardware store and just buy one so if there’s a problem I can just return it on the day.

But no, even though I did ask for a refund, they shipped a replacement, when that showed up I thought I’d try it seeing as I wanted that drive anyway, only that one was also dead. I wasn’t happy and made it very, VERY clear how I wanted a refund and no replacement.

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Thanks for the advice man. I will just return it a bit pissed about it since they didn’t mention this anywhere but the manual. I think before buying any motherboard now I’m gonna read the manual first haha.

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Hey, no problem! :slight_smile:

But yeah… Reading a motherboard’s manual before purchase is NEVER a bad idea, even if you’re just doing it for the pornographic material *he said sarcastically *.


PC Part Picker

I’m sure you’ve at least heard of it, but PC Part picker is typically pretty damn good at showing you what parts will work together, I say typically as I have encountered a situation where it’s a bit of a debate/gamble.

https://uk.pcpartpicker.com/

I know the provided link is the UK site, because yes I’m British as fuck and drink tea all day every day. - Fact, I physically cannot drink tea.


Personal Use Of PC Part Picker

As for the scenario I’m talking about, it’s more a situation of a PSU fitting into the case I specified, I was trying to see if I could get a larger/more powerful PSU for the inwin chopin, without doing any major modifications. I found that there are some flex atx PSU’s that may fit, but the case is crammed as it is already, and it’s a bit of a sticky situation… I even tried contacting InWin directly… No response as of yet…

I want to know about the InWin situation because I am a hardcore micro system fanatic… I’m actually trying to develop a case that really pushes the limits… I mean the PSU would be external… I mean I’m trying to get as close to NUC size as possible before special hardware is needed, haha! :joy:

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I’m actually from the UK too mate haha Scotland more specifically, I am also a man who thinks tea is disgusting. Yeah i usually use pcpartpicker actually just did before you replied to see if i could find a motherboard that will work.

Right now looking at this ASRock AMD Ryzen X470 Taichi Ultimate. Might send a wee message to the manufacturer and make sure what I’m doing is supported. Had a look at the manual seems all good but I’m hesitant.

It cool the micro stuff your doing. I built a micro atx system a long time ago for a portable lan pc. Overheating galore and messy cabling is what i managed haha. I understand the power supply feel, I built a router a while back in a 1U case to be rack mounted. The original power supply and fans where jet engine loud. Replaced the normal fans with Noctua fans they are super quite compared to the original. Had to replace the psu since the fan on it was so loud used a picoPSU since the router uses almost no power. But it it was too high for the case and had to get a atx power extension cable till that point had no idea that they existed. Then i had to use electrical tape to keep it down where the old psu used to be and i just have the laptop like power jack dangling out that back. Completely jerry rigged going to have to make a more clean solution one of these day. Hope you enjoyed my long winded story.

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So you eat haggis and I shag sheep then? That’s right, I’m Welsh. :joy:

Well, what do you know? Two Brits to break that stereotype right here, I love coffee, but tea, lord no.

I’ve heard very good things about ASRock in general, I’ve never used any of their products personally, but I know a few people that swear by them.

Not a bad idea at all my friend, worst case scenario they may not reply…

Honestly, it’s becoming an addiction… Like I would love a YouTube channel dedicated to building small but overkill machines… Having done testing myself and enough research that I should have had a PhD by now… I’ve come to the conclusion that if you really wanna go nuts with size, the best thing you can do is make everything modular, or at least as much as possible…

To further explain I mean you’d need an external GPU enclosure, external bulk storage, only having your mobo, PSU, CPU, RAM & SSD’s in the core component which is the main components of the PC itself.

That takes me back, one of my first builds, I don’t know why, this shows how inexperienced I was… I got a 120mm fan that spun up to something crazy like 15,000 RPM(my memory may be incorrect), sounded louder than a hoover, but I kept it for a while because I was scared my system would over heat… :joy:

Indeed I did! :slight_smile: … I’m 50% tempted to consider even developing a case where the enclosure for the PSU is actually external, and develop some sort of clever and fancy mechanism to hide the connection(s).


Talking Nonsense

I’m not sure if this is a common thing, but I’ve had the idea for years to invest into what I call ‘show-casing’ a system. The idea is simple, I don’t know how hardcore nerd you are, but know stuff like Warhammer 40k, the actual scenery that you see in the actual Game Workshop stores could be used ot build a kick ass looking case for a computer… Or just general model scenery… Whatever the hell you wanna call it…

I was thinking about giving a ‘nuclear meltdown’ theme a go, I mean just get some glow in the dark liquid, custom water loop and then around all of the tubes and the components cover them up with some sort of scenery, I mean the idea being that it looks nothing like a computer, but underneath it’s actually a flat out power house…

Where do you see this? You should be able to use two graphics cards at PCIe X8 each. Unless I’m blind, I don’t see anything mentioning vega graphics cards… vega graphics processors on that page refer to APUs.

What CPU are you using?

Hi yeah im using AMD Ryzen 7 2700X. It should be able to support the 8x by 8x configuration. I assumed it meant the vega graphics card my mistake. I updated the bios to the latest version and still nothing. I know its not a graphics card problem since each individually in the top pcie slot work perfectly.

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Your getting it wrong mate its the welsh that shag the sheep don’t try to blame it on us haha.

Asrock has been a mixed bag for me can be 50/50 the server motherboards i have by them are fantastic but had a low end consumer motherboard a couple of years ago made by them that was riddled with bios problems that where never fixed. ended up having to buy a new one. Since this one is top of the line i assume it would be fine.

I would be careful mate when messing with PSUs they even when off can still give you a shock that could kill you so if you deicide to take one apart i would watch some videos on being safe around high voltage electricity. But its just an enclosure that holds a psu and your not taking it apart you should be fine.

I know exactly what you mean about the warhammer 40k decorating kinda stuff. I was more interested in it when i was younger but never had the money to do it. Now a days I’m just happy to have a working pc in a white box. even though i wish i could get a case with wood accenting. Might mod my pc one day to add that, top priority this now though is changing the buttons on my case bought a cheap one to replace my previous one that was falling apart. it doesn’t have a reset button and the power button feels awful. gonna by some nice cherry mx switches and add them in.

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I think you misread that, I did say:

But it’s shits and gigs either way! :heart: xoxo

Okay, Reading your entire point of Asrock mobos, I’ve only ever looked at high end stuff, I’ve bought cheap hardware in the past trying to cut corners, lesson learned, that was an awful idea, I think my PSU actually blew up a little, I just heard a hell of a bang and some crack noises one day, PC shut down straight away… Crapped myself and investigated, the fan for the PSU had soot on it… I was young and reckless, don’t judge me… :joy:

It’s fine, my brother is actually a high voltage electrical engineer, if I ever decided to dissect a PSU, I’d ask him for a fair bit of advice and help. He often works on large power grids and wind farms and what not, I think he could manage to at least assist with a PSU, or at least I’d hope so! :joy: … Maybe not so much the electronics side, but general safety, yes… If I ever wanted to mess around with electronics I’d ask my friend who does electronics stuff for the MOD, I’m not sure how much help he could provide, but I could always ask! :slight_smile:

Me too, I haven’t done anything with Warhammer in years, but likeyou said, the price on those things, Jesus, you need a small mortgage to build up a half decent collection.

Sounds very much like myself, although I’m tempted to just good wood works style and build an entire case out of wood. Obviously if you ever do anything like that, you’ll need to know a few basic things about general wood work first, a good start would be to treat the wood to prevent moisture and what not. The only reason why I don’t do that right now, being the average bloke you don’t have the time or the room to realistically dedicate a day or two to building a PC case, especially when you consider if you’re not that good at wood works, it may end up looking awful! :joy:

Sorry to hear you’re having troubles man. I hope I didn’t skim to fast through the thread, but I didn’t see if you had the latest UEFI BIOS version or not? Have you confirmed what is being reported by the “graphics card info” at the end of the Tool menu?

I have this board too, and have had to do some trickery to get it to run two Samsung 970 Pro NVMe’s at PCIe3x4 each.

Hey man, I think you’re misunderstanding this page. It’s talking about different CPU configurations and how the PCIe lanes get reduced or changed depending on what CPU you use. When they say AMD Ryzen with Vega graphics, they mean APUs like the Ryzen 5 2400 G which comes with RX vega 11 graphics SOC.

What CPU do you have?

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which slot is your nvme in? It should be in the slot closest to the cpu. that should fix you up?

There is so much off topic in here that I honestly didn’t even bother reading half of the thread…

Anyway, as was pointed out already, that “vega” is referring to the APUs and has nothing to do with your situation.

The first thing I would do is unplugging all devices except for the 2 GPUs, and then see what the Q-Code readout says.

Also if wendell’s advice is the case, do that. But AFAIK Vega “should” boot even with just 4 lanes being used, it wouldn’t be useful, but it should boot.

What happens when you put the Vega in the top slot and the 970 in the middle?

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Sorry for all the off topic i am stupidly good at it haha.

Yes i do have to latest bios revision.
CPU: AMD Ryzen 7 2700X
I don’t have any nvme drive installed.
I am only using two graphics cards.
I have tried swapping both gpus. It will just show the one in the top slot.

The only thing i haven’t tried is using the bottom pcie slot since i cant really access it in my case.
Will send you picks of how it looks in the bios.
Also in linux only one gpu will be recognized just like the bios.

Also the system wont post with one graphics card in the middle slot and none in the top. Dont know if it expects a graphics card to be in the top slot so thats why it wont post in that configuration.

Hope this was more useful and on topic.

Will try and see the bios codes and will post some pics of what the bios looks like with cards in each configuration.

Ok so I’m a complete idiot.
Turns out the second card was never actually going in properly.
It takes a lot more force to get in than the top slot.
I usually put my cards in top first. It made the click of it going in but it turns out the second slot was clicking but not actually making the card go fully in.
noticed this when taking them out again.
Vega still wont work in the bottom slot since it wont go in properly but I’m happy that both are working now.

Lesson learned put the graphics cards in bottom first.

Thanks all for dealing with my stupidity.

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shouldn’t matter because the bottom slot is 2.0 through the chipset on that board iirc.

Yeah i know but it would have been worth a try. The middle slot is still a bit dodgy. probably faulty in some way but im gonna leave it as it is. as long as the pcie slot screws arn’t on too tight and the moons align it works. Thanks for the help anyway man.

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