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Help ! Xmp problems...

williamhandoko1
Level 7
Hello all, I want to ask especially for experts because im not:p,

Okay here my problem, when i set the xmp on, the boot process goes as normal, and everything goes as good, until some time when i play games or browsing internet, my pc goes to blue screen with exceptional_unhandheld_error.

My suspicion is goes to the bios version i had updated some times ago, it says version 1301 or something like that, that i had replaced it with my older version.

This problem happened only just after i upgraded my bios ver. before it my pc is allright with xmp.

What should i do now ? am i must downgrade to older bios version or what?

My pc specs:
i9 7900x
x299-e strix gaming
gtx 1080 ti sli
g.skill 128 gb
samsung 960 pro 512 gb
seagate barracuda 3 tb raid mode
cryorig h5 universal
corsair hx1000 watt
1,757 Views
10 REPLIES 10

Hopper64
Level 15
Is the memory kit on the QVL? That’s a lot of memory. Is it 2 kits or one? What’s the product number on the memory?
MZ790AE, GSkill F5-8400J4052G24GX2-TZ5RK, 14900KS, EKWB D5 TBE 300, Seasonic Prime TX-1600 ATX 3.0, Asus Strix 4090 w/ HK block, Phanteks Enthoo Elite, Asus Claymore 2, Asus Gladius 3, Asus XG349C, Crucial T705, Windows 11 Pro

the serial is F4-3200C14Q-64GTZSW, and yes these are on QVL list

yeah, of course that 2 kits with 64 gb (16x4) each

Hopper64
Level 15
That may be the issue. Use only one kit. Mixing kits is not recommended.
MZ790AE, GSkill F5-8400J4052G24GX2-TZ5RK, 14900KS, EKWB D5 TBE 300, Seasonic Prime TX-1600 ATX 3.0, Asus Strix 4090 w/ HK block, Phanteks Enthoo Elite, Asus Claymore 2, Asus Gladius 3, Asus XG349C, Crucial T705, Windows 11 Pro

Hopper64
Level 15
https://rog.asus.com/forum/showthread.php?57038-Don’t-combine-memory-kits!-The-meat-and-potatoes-ove...
MZ790AE, GSkill F5-8400J4052G24GX2-TZ5RK, 14900KS, EKWB D5 TBE 300, Seasonic Prime TX-1600 ATX 3.0, Asus Strix 4090 w/ HK block, Phanteks Enthoo Elite, Asus Claymore 2, Asus Gladius 3, Asus XG349C, Crucial T705, Windows 11 Pro

but, before i upgraded my bios, everything is allright, i can use my xmp setting to achieve maximum speed of 3200 with full slots used , without any problems, and now speed only capped at 2133 ,

the maximum size of one kit is only 4x16 gb each, that means i must remove one kit and reduce my ram amount to only 64 gb ? although my ram kits are the same model and serial ?

williamhandoko170196 wrote:
but, before i upgraded my bios, everything is allright, i can use my xmp setting to achieve maximum speed of 3200 with full slots used , without any problems, and now speed only capped at 2133 ,


The above from Hopper still applies. Sub timings and memory rules change from build to build (UEFI version). Memory kits are certified to work at the density they are binned in. If mixing kits, then you are eating into what is refered to as the guardband put in place by the memory vendor. Adjustment of timings, voltage and possibly frequency may be required in order to get both kits to work in tandem.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

restsugavan
Level 14
Maybe 128GB@3200MHz you’ll need increasing memory voltage.
W11 C 24H2 26252.5000 Core i9 7980XE 02007108 MCE ME 11.12.96.2535 R6E Modified BIOS 4001 SAMSUNG OG9 FW 1019.0 SSD 970 EVO PLUS 1 TB x 3 NVIDIA RTX 4090 GAME READY 556.12 64GB GSKILL DDR4 3200MHz JBL 9.1 Sound Bar DTS-X