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Strix Z790-H Gaming pre-purchase questions

Level 9

I'm planning a new gaming build sometime in the next few months. I want to build it around an Asus ROG Strix Z790-H Gaming Wi-Fi Motherboard. Anticipating flash price increases, I went ahead and bought my memory and my SSDs. I had a couple of questions.

First of all, the memory I purchased is G.SKILL Trident Z5 RGB Series 32GB (2x16GB) DDR5-7200 CL34-45-45-115 1.40V, F5-7200J3445G16GX2-TZ5RK. When I look at the QVL list for my memory on the G.SKILL site, it doesn't list the Strix Z790-H. However, when I look at the Asus site, the G.SKILL memory is listed on this motherboard's QVL, so I'm assuming it should work OK. Has anyone out there used this particular memory or know of anyone that has? I'd read of a couple of users that seemed to be having issues getting things to work at 7200 MT/s.

Lastly, having been released later than all of the other new Strix Z790 boards, I haven't been able to find a whole lot about the Z790-H. I've seen a forum post or two hinting that the PCIex16 slot shares lanes with the M.2 slots and that it can't run at full speed if a certain M.2 slot it used. I've looked through the Strix Z790-H manual and I can't find anything at all about this. Is anyone aware if there is any truth to this claim?




Level 17

I can't see an answer in the manual either, but probably true. A lot of boards will reduce the GPU to x8 if the M.2_1 slot is in use. This doesn't happen with the Z690 Hero for some reason, but a lot of boards do work like that.

Not a big deal though, even if true. I understand that people want x16, but in real terms a x8 GPU connection will still give you no less than 95% of the x16 speed because not all lanes are used by the GPU anyway.  You have 4x M.2 slots on that board though, so one workaround is not to use slot M.2_1 if you really want x16. 

Having purchased 2x16GB of RAM, I suspect it will work OK. Most issues occur with larger RAM modules or using 4 sticks. SO I don't know about that memory with your board for sure, but my money is on the fact that it will be OK. 

Z690 Hero, 12900K, BIOS 3603, MEI 2406.5.5.0, ME Firmware, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.

Thanks for your reply. I really appreciate it. I think I'm going to go ahead and order the Z790-H.


@JohnAb wrote:

Having purchased 2x16GB of RAM, I suspect it will work OK. Most issues occur with larger RAM modules or using 4 sticks.

I've had no problems with my rig using this motherboard with four sticks of G.SKILL Trident Z5 DDR5 6800 (PC5 54400) F5-6800J3445G16GX2-TZ5RK for 64GB total (two 2×16GB sets).