5700x3d abnormal cache/memory latency | AMD Gaming | Page 1

stable pewter Jan 22, 2026, 10:28 AM

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Hi, got a 5700x3d off ebay. so idk the history. seems to act very unusual compared to another 5700x3d i have.

in aida64 the cache and memory latency is abnormally high at both stock and at 3800mt/1900fclk way higher than expected. this is consistent. as bad of a benchmark aida is that should be well outside any margin of error. in superposition i also noted the fps is extremely erratic

stability testing in p95 and occt vram, testmem5 y-cruncher i get no errors. no whea either. but when i went to install nvidia drivers i did find that decompressing step would throw a data/CRC error with the 3800/1900 oc. still reduced clocks where zip decomp is fine the abnormal latency is still a thing

really want to get to the bottom of this, if someone has a better latency test than aida this can be observed in or if any amd people have any idea whats going on here or ideas of what to test.

my speculation is theres some defect in this cpu and its just stable enough its error correcting its way out of it but i have no idea if that can be confirmed. i can swap board and memory if needed.

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would even be intrested in if theres a chicken bit to disable the x3d cache to check if maybe theres something wrong with it but am just speculating

astral yarrow Jan 22, 2026, 11:09 AM

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Update the BIOS and see if that solves the problem.

If that doesn't solve it, after updating the BIOS, perform a CMOS reset in the BIOS.

And try using Windows 11 25H2, do a fresh installation.

stable pewter Jan 22, 2026, 11:33 AM

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astral yarrow Update the BIOS and see if that solves the problem. If that doesn't solve it, a...

this doesnt make sense if the same system with one 5700x3d is normal and the other is abnormal. the only change is the cpu. your suggestions would mean one cpu is affected by software/firmware but another is not

This is a fresh install. Bios is on the latest version. bios reset has no impact

astral yarrow Jan 22, 2026, 11:38 AM

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]When we replace any hardware, it's a good idea to do a CMOS reset and a fresh Windows installation.

And are you by any chance using the 11 25H2?

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I would try setting the memory to 3200MHz.

stable pewter Jan 22, 2026, 11:41 AM

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astral yarrow ]When we replace any hardware, it's a good idea to do a CMOS reset and a fresh W...

the os was originally installed maybe a week ago, when i found this abnormal behaviour i reinstalled last night with a fresh iso from microsoft.

astral yarrow Jan 22, 2026, 11:43 AM

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Lower the memory clock speed to 3200MHz.

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If you updated the BIOS, reset the CMOS, lowered the memory clock speed, formatted the system,

if you've already done all of that,

then it's a hardware problem with the CPU or RAM.

stable pewter Jan 22, 2026, 11:47 AM

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astral yarrow Lower the memory clock speed to 3200MHz.

have tried that, its defo less erratic in superposition but theres still some wild fps jumps. aida still very unusual with latency. even 2133 its the same story. RAM i can swap but swapping the cpu with a known good its not having that behaviour

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ill get some screenshots

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but yeah i had concluded it was likely hardware but wanted to understand what is going on under the hood

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it feels like its error correcting like crazy but theres no external sign of that

stable pewter Jan 22, 2026, 11:58 AM

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astral yarrow Lower the memory clock speed to 3200MHz.

stock after clearcmos

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note its not just memory latency but all of the cache is uber high latency

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RDP also would not affect the game fps, just using that so i can capture it easier same if i watch on the monitor

astral yarrow Jan 22, 2026, 12:03 PM

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It seems to be a hardware problem; are the parts under warranty?

stable pewter Jan 22, 2026, 12:04 PM

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not original buyer

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probs a tray cpu anyway, think most 5700x3ds are

astral yarrow Jan 22, 2026, 12:05 PM

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Is there an error occurring in the Windows Event Viewer?

stable pewter Jan 22, 2026, 12:08 PM

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nope, i was hoping it would but whatever is going on doesnt report a WHEA. i dont think ive heard of this kinda faliure mode so was curious if theres either some kind of internal register that might give some hint

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like either a chicken bit that turns x3d off to see if maybe thats failed... or some kinda "im error correcting" register that would be incrementing or something

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tho tbh even the L1 cache latency is as high as what L3 should get. so idrk, its a weird failure mode.

stable pewter Jan 22, 2026, 12:48 PM

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wonder if uprof would see anything weird

stable pewter Jan 22, 2026, 2:48 PM

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hmm, it seems the MSI B550I i have will not post that CPU but the Jginyue will.

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oh no wait

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just slow af post

stable pewter Jan 22, 2026, 4:00 PM

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well..... i dont know anything suppose. this is the cpu having issues in a diffrent system. its fine? which im happy about but it doesnt make any sense at all. i guess next will be to see if the same occurs when the pcie 4 devices are on this board

civic robin Jan 22, 2026, 9:36 PM

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stable pewter this doesnt make sense if the same system with one 5700x3d is normal and the oth...

it does make sense.

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what BIOS version, mainboard and memory is used on both systems?

stable pewter Jan 23, 2026, 3:49 AM

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System 1 - has issues with one 5700x3d but my older 5700x3d is fine in this system
Jginyue B550I Gaming (BIOS: JA500GEN3)
Gskill 2x16GB DDR4 Samsung B die
AddLink A95 Phison E18 2TB on cpu m.2
Gigabyte RTX 4060

System2 - the 5700x3d works as expected
MSI B550I Gaming Edge(BIOS: E7C9AMS.1J0)
Corsair 2x16GB DDR4 nanya B die
Crucial MX500 1TB
Soyo R5 230

civic robin Jan 23, 2026, 3:50 AM

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have you tested that CPU from System 1 on a different Mainboard / in System 2?

stable pewter Jan 23, 2026, 3:50 AM

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yes and in the MSI board its acting fine but not swapped other parts over to check

civic robin Jan 23, 2026, 3:50 AM

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not saying it has to be the mainboard, but its not a commonly used one

stable pewter Jan 23, 2026, 3:51 AM

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yeah the jginyue is an odd board, but dont see why the other 5700x3d is fine in it then

civic robin Jan 23, 2026, 3:51 AM

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ah

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have you swapped memory?

stable pewter Jan 23, 2026, 3:51 AM

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signalling on it is defo quetionable as trfc is 180ns on that board when it should be going down to about 145ns

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i did but iirc not much change with that

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need to recheck

civic robin Jan 23, 2026, 3:54 AM

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yea do that, curious if that changes anything

stable pewter Jan 23, 2026, 3:55 AM

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but also im not sure why the board would affect the cache of the cpu. maybe core voltage isnt the same on both boards

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did wonder if maybe this was pbo scalar degradation, idk the history of the cpu. but i know the one i had prior wasnt abused

civic robin Jan 23, 2026, 4:05 AM

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may aswell throw in mine

stable pewter Jan 23, 2026, 4:50 AM

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well no change with the ram swapped.

civic robin Jan 23, 2026, 4:51 AM

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still weird?

stable pewter Jan 23, 2026, 4:56 AM

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yup, i might reinstall the bios to the pcie4 one just to see

civic robin Jan 23, 2026, 4:57 AM

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uh, you mean reflash?

stable pewter Jan 23, 2026, 4:57 AM

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stable pewter Jan 23, 2026, 5:47 AM

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well i pulled the board out, swapped the gpu, ram, psu, ssd. same issue. only for 1 of 2 5700x3ds

so odd. but its clearly an issue with that board just being garbage. tried the pcie4 bios and the 4060 error 43. im pretty sure it worked when i didnt have the pcie4 nvme installed so defo something up with signal quality

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but i really do wonder why it only affects one 5700x3d and not both

civic robin Jan 23, 2026, 5:48 AM

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do both work in the MSI board?

stable pewter Jan 23, 2026, 5:52 AM

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yes, both seem to be normal in that

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well

civic robin Jan 23, 2026, 5:52 AM

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odd

stable pewter Jan 23, 2026, 5:53 AM

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i did notice the bios looks corrupt on the msi

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but it works fine

civic robin Jan 23, 2026, 5:53 AM

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corrupt?

stable pewter Jan 23, 2026, 5:53 AM

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it just reports dram at 2v and dram voltage is called dramoltage

civic robin Jan 23, 2026, 5:53 AM

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can you grab a picture of that

stable pewter Jan 23, 2026, 5:54 AM

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was gonna check if its like that with the known good but sure give me a lil bit

civic robin Jan 23, 2026, 5:54 AM

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stable pewter it just reports dram at 2v and dram voltage is called dramoltage

hmm

stable pewter Jan 23, 2026, 6:10 AM

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intresting. the known good cpu in the msi board bios looks fine....

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post is also much quicker

stable pewter Jan 23, 2026, 6:50 AM

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the more I go down this rabbit hole the less I understand.

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only CPU change right photo is known good

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and aida acts normal

#5700x3d abnormal cache/memory latency