So i have 32gb of corsair vengance and when i have My 2700x in my build all 4 sticks function at 2133 but windows says 16gb avail and 16gb stored. Also when i enable xmp my computer just resets bios and speeds stay at 2133. If i use only 1 stick of ram Xmp or any other speed works perfect. Now the weird part is with all 4 sticks installed and i swap out my 2700x for my old 1700 The computer runs twice as fast and xmp @ 3200mhz works fine. Any help would be apreciated i contacted gigbyte thinking it was a mobo issue but they said it is more or less a cpu issue.
Ryzen 7 2700x
Gigabyte Aorus X470
32GB Corsair Vengance RGB 4x8
EVGA 750 PS
siska, are you using the exact same memory with 1700 and 2700X? Sounds like a bad stick of memory or stale W10. Please try one stick at a time and see if you can isolate it. Please do a Clear CMOS before. Did you install a fresh copy of W10 on each processor swap. If not that may be the problem. You should always install a fresh copy of W10 whenever the CPU is swapped to another model. Thanks and enjoy, John.
Misterj, The exact same computer, ram, HDD, etc. Just swapping out the 2700x for the old 1700 and everything works as it should.
Things I have tried,
Fresh installed windows 10
1 stick at a time in every slot works fine with xmp add another into the equation and NO xmp for me on the 2700x
Installed my old 1700 back in and have absolutely no issues. Same Board, ram, etc Literally the same physical computer
All individual sticks of memory work in any slot
Other misc voltage stuff in bios trying to get it to work. Dram calculator etc.
Literally change nothing and put my old cpu in and it works fine. Its sad my 1700 is triple the working speed than my 2700x at this moment
sounds like your new CPU is more sensitive to the RAM timing than the old one
I use cheap DDR4-2400 and overclocked it, G,Skill NT series, no heat spreaders even, not needed either
siska, please post a screenshot of Ryzen Master (RM) - simply drag-n-drop image into your reply. Please do this for both processors. EACH and ever time you change your CPU, you should install a fresh copy of W10. Of course, you may have a defective processor. You will need to contact AMD Online Support to deal with that. In this User forum, we are trying to determine any other conditions that may be causing the issue. Thanks and enjoy, John.
I have a similar issue. I have 32GB of 3200MHz Corsair Vengeance RGB Pro (Hynix CJR memory) with a Ryzen 2700X and Asus Strix X470-F gaming mobo and since day one. I've been having issues using the XMP profile when using more than 2 dimms and to be able to boot I have to set the timings manually. Everything was working well until recently that the issues got worst. Although the system it's "stable" and I don't get any RAM errors when testing, my PC will eventually crash. Sometimes even after just simply rebooting the PC, it won't pass the POST and eventually, the CPU error light comes up and stays there. When this happens I have to completely drain the system power or remove to dimms to be able to boot and then reconfigure everything again. This also happens sometimes just at default speeds and/or bios settings. I've tested the RAM in a different system and there are no issues at all. All the components are relatively new (about 3 months old). I hope he can find a solution to this problem.
My full system specs are:
CPU: Ryzen 7 2700X
Cooler: RYUO 240 AIO
MB: Asus ROG Strix X470-F Gaming
RAM: 32GB 3200MHz Corsair Vengeance RGB Pro (4x8GB)
GPU: Radeon VII
PSU: Corsair HX750
Storage: 512GB SATA m.2, 128GB SSD, 1TB HDD
misterj a écrit:ever time you change your CPU, you should install a fresh copy of W10
I've been swapping between gen one and gen two Ryzen without issue As long as chipset drivers and bios are up to date.
It's obvious that if all 4 sticks function correctly with the 1700 the Ram and the motherboard can be ruled out, Siska You've got a lemon 2700x return it and don't waste your time.
You should check your RAM MEMORY for the 2nd Generation Ryzen on your motherboard's QVL List and see if it is listed.
RAM MEMORY that may be compatible with the RYZEN 1xxx processors may not be compatible with the Ryzen 2xxx Processors. X470 AORUS ULTRA GAMING (rev. 1.0) | Motherboard - GIGABYTE U.S.A.
The Ryzen 7 1700 is a Summit Ridge CPU while the Ryzen 7 2700X is a Pinnacle Ridge CPU. Notice each has its own QVL list for RAM MEMORY.
It is possible RAM MEMORY may be compatible for both and both QVL Iist. but to be sure you need to check your RAM MEMORY against the Pinnacle Ridge QVL list.
Note: Decided to attach both QVL List for both types of processors. Just click on the attach file to download it and see for yourself if your RAM is listed for Pinnacle and Summit Ridge processors.