Asus ROG Strix X870E-E and ASUS ROG Ryujin III

[catweasel]

Hi Folks,

I was wondering if anyone has first hand experience with fitting a ASUS ROG Ryujin III 360 onto a Asus ROG Strix X870E-E motherboard? I have been researching a couple of motherboards for a new build and this one seems to beat the Hero in price, more USB ports on the back I/O, and more importantly no lane sharing with the PCIe slots (i.e., you can actually use the PCIe_2 slot without knocking your PCIe_1 down to x8). However one thing did I run across on reddit was there were some clearance issues when using the larger AIO's with that MB.

So I just wanted to ask has anyone here fitted a ASUS ROG Ryujin III 360 onto a Asus ROG Strix X870E-E, and can confirm there are no clearance problems with that AIO when used on that MB? This reddit post is the reason I am asking the question: https://www.reddit.com/r/ASUS/comments/1hodigw/incompatibility_alert_asus_rog_strix_x870ee_wifi/

 

[pastymuncher]

You would think that Asus would ensure compatibility between their own products or at least have a compatibility list for the pump but I guess that's too much to ask.

More importantly, why would anybody pay £370 for a AIO just to cool a cpu? That's crazy money and if you are willing to spend that much just to cool a cpu then you may as well go the whole hog and put together a proper water loop that can be added to if you decide to do the GPU at some point. Thermalright do several AIO's with similar lcd screens for less than £100. Even their top end ones are only around £150.

 

[catweasel]

You would think that Asus would ensure compatibility between their own products or at least have a compatibility list for the pump but I guess that's too much to ask.

More importantly, why would anybody pay £370 for a AIO just to cool a cpu? That's crazy money and if you are willing to spend that much just to cool a cpu then you may as well go the whole hog and put together a proper water loop that can be added to if you decide to do the GPU at some point. Thermalright do several AIO's with similar lcd screens for less than £100. Even their top end ones are only around £150.

On paper it supposedly is, but if its a problem for 1 large AIO it could be an issue for others as well. So I figured it would be prudent to just ask on this forum and see if anyone has any experience with that AIO and MB combo.

You are not wrong about the AIO prices (it applies to prices in general for PC gaming), but its the nature of where that industry is right now. What I am still trying to wrap my head around is the PCIe_1 lane sharing on many of the high-end x870e MBs. It makes no senses to me, but I risk going off on a tanjent with that topic...

 

[WARburton]

can you not mount the pump with pipes to top. you can flip the image in the soft wear

 

[Tetras]

What I am still trying to wrap my head around is the PCIe_1 lane sharing on many of the high-end x870e MBs. It makes no senses to me, but I risk going off on a tanjent with that topic...

Is your thread, so eh. Simple answer: 1x PCI-E 5.0 M.2 slot is no problem, if you have 2 or 3 PCI-E 5.0 M.2 slots then lane sharing is likely, due to the use of USB4 taking 4 lanes from the CPU's 8 available spare PCI-E 5.0 lanes.

If you like the Strix brand, have fairly simple requirements and don't care about USB4, then I'd look at the B650E-F Strix instead.

Extensive video on the topic (timestamps for each board in the description):

 

[catweasel]

Simple answer: 1x PCI-E 5.0 M.2 slot is no problem, if you have 2 or 3 PCI-E 5.0 M.2 slots then lane sharing is likely, due to the use of USB4 taking 4 lanes from the CPU's 8 available spare PCI-E 5.0 lanes.

Ah, I think you misunderstood the source of my annoyance. I meant the PCI-E_1 and PCI-E_2 slots sharing the same lane on many high-end motherboards. Meaning if you wanted to keep the PCI-E_1 at x16 lanes, you cannot make use of the PCI-E_2 slot on the MB for something like a sound card (or whatever you might want to use it for). There is debate on how much of an impact a v5 PCI-E operating at x8 lanes really has on a GPU like the RTX5090. The Asus ROG Strix X870E-E for example doesn't have this problem, the 2 PCI-E slots are on different lanes. However the Asus X870E ROG Crosshair Hero which costs £100 more (at the time of posting) and was another MB I was looking at, does share the lanes on the PCI-E_1 & _2 slots, which infuriates me.

If you were spending the money on a Asus X870E ROG Crosshair Hero, a decent CPU, AIO and a RTX 5090, the chances are good your trying to get the best performance possible. So switching the PCI-E_1 to x8 lanes right out the gate if you wanted to add a sound card to your build in the other PCI-E slot is not welcome. If you only intend to use just the 1 PCI-E slot then its a non-issue, but some people will want to use the other PCI-E slot either at the time of building the rig, or at some point in the future without it hitting their GPU performance.

Regarding that website, yes that is actually a really good one I recently discovered, it has pretty much been my go to site if I want to know how a MB has its lanes setup.

 

[Tetras]

Ah, I think you misunderstood the source of my annoyance. I meant the PCI-E_1 and PCI-E_2 slots sharing the same lane on many high-end motherboards.

Ahh, right, I see what you mean. Yeah, the problem there is that the CPU can only split the GPU lanes to 8 or 8, so if they use any of those additional PCI-E slots for PCI-E 5.0, they have no choice there. The Strix avoids that by just making it chipset connected and PCI-E 4.0 (4 lanes), but the Hero has the second slot CPU connected.

There is debate on how much of an impact a v5 PCI-E operating at x8 lanes really has on a GPU like the RTX5090.

Yeah, it is very little, a few percent (on average).

If you wanted a sound card the arrangement on the Strix is fine, but if someone wanted to run an 8 lane card (or wanted PCI-E 5.0) they'd prefer the Hero.

 

[spooks]

I use a corsair h150i which is pretty chunky and it fits fine - come to think of it I did think when installing that it looked like the clearance would be tighter than normal. Its fine though!