Asus Z490 stuff

[Ataemonus]

Something to do with ErP or perhaps similar, or USB power.

[criskoe]

If its a bios setting, I can't find it, lol

Im just fully guessing here but try to turn off windows "Fast start up"

https://www.asus.com/us/support/FAQ/1031533/

And right below the setting make sure sleep and hibernate are also unchecked.. Give that a shot....

[sladenlol]

We need to get access to tXP and PPD in Bios, cause right now its only available on windows desktop with mem tweaker and needs to be reapplied after every reboot.
it drops latency by almost 3ns with zero downsides, so please consider making the memory timings available in next bios.

[bscool]

really thanks for your share. I just wanna see your ram settings. I have some probs with bandwith in aida... that would be also great if you could send me the settings for gskill4800 rams. thanks

If you dont want to go thru all the settings DRAM Refresh Interval [65535] will make the biggest difference. Also make sure tWRWR_dg is [4] or it will kill write bandwith and setting Maximus Tweak mode 2 will usually set it higher if left on Auto.


Ai Overclock Tuner [XMP II]
XMP [XMP DDR4-4807 18-22-22-42-1.50V]
DRAM Frequency [DDR4-4600MHz]
Maximus Tweak [Mode 2]
DRAM CAS# Latency [17]
DRAM RAS# to CAS# Delay [18]
DRAM RAS# ACT Time [40]
DRAM Command Rate [2N]
DRAM RAS# to RAS# Delay L [6]
DRAM RAS# to RAS# Delay S [4]
DRAM REF Cycle Time [360]
DRAM Refresh Interval [65535]
DRAM WRITE Recovery Time [11]
DRAM READ to PRE Time [6]
DRAM FOUR ACT WIN Time [16]
DRAM CKE Minimum Pulse Width [7]
DRAM Write Latency [16]
DRAM RTL (CHA DIMM0 Rank0) [63]
DRAM RTL (CHB DIMM0 Rank0) [63]
DRAM IOL (CHA DIMM0 Rank0) [7]
DRAM IOL (CHA DIMM0 Rank1) [4]
DRAM IOL (CHA DIMM1 Rank0) [4]
DRAM IOL (CHA DIMM1 Rank1) [4]
DRAM IOL (CHB DIMM0 Rank0) [7]
DRAM IOL (CHB DIMM0 Rank1) [4]
DRAM IOL (CHB DIMM1 Rank0) [4]
DRAM IOL (CHB DIMM1 Rank1) [4]
CHA IO_Latency_offset [21]
CHB IO_Latency_offset [21]
CHA RFR delay [14]
CHB RFR delay [14]
tRDRD_sg_Training [7]
tRDRD_sg_Runtime [7]
tRDRD_dg [4]
tRDWR_sg [14]
tRDWR_dg [14]
tWRWR_sg [7]
tWRWR_dg [4]
tWRRD_sg [31]
tWRRD_dg [26]
tRDRD_dr [6]
tRDRD_dd [7]
tRDWR_dr [14]
tRDWR_dd [14]
tWRWR_dr [9]
tWRWR_dd [9]
tWRRD_dr [8]
tWRRD_dd [9]

[GemueseMonster]

feature request for flexkey: press once to reset, press twice to boot into bios

[Ezveedub]

Something to do with ErP or perhaps similar, or USB power.

I'll check, but don't think I have any of those items enabled.

Im just fully guessing here but try to turn off windows "Fast start up"

https://www.asus.com/us/support/FAQ/1031533/

And right below the setting make sure sleep and hibernate are also unchecked.. Give that a shot....

When I get it back up running, I'll look at that. Took it down for now since I reassembled one of my other PCs and needed the desk to get it running.

[cstkl1]

Latency with Z490/10900K is about ~2ns worse compared to Z390/9900K with the same memory settings, but that is not the cause of your problem. What is, I don't know.

Edit : **latency with AIDA64 memory test**

its a issue with aida on write which affects latency
*10700k has better latency 4kc17 onwards its already below 40ns
and scales properly

but*10900k has a bug on write which affects latency
51|48 M12E bios 0606 (best on latency) 4x8gb
*10700k - 4133c17 rtl default read is 62k write is 63k+ .. lowered rtl its 63k read 64k write. latency all below 40
*logic
*10900k - 4133c17 rtl default read is 63k write is 64k.. lowered rtl its 64k read write at 63k. latency actually flux upwards
40-42.. *

side note*
testing ppd 0 doesnt have any effect on stability i suspect based on page 71 in intel 10th gen data sheet it will affect training since alot of training needs cke.
50|45@L4 1.34 (bios recommended) 4133-17-17-17-37 @1.4vdimm, vccio 1.25, vcssa 1.255 lost 3ns in latency.
*txp 3 does bupkus. ppl should read y cause its written in page 71.. what happens when u set ppd to 0

[cstkl1]

apex bios 088
added ppd and txp

what about extreme??
i need that txp. *

[Ataemonus]

Where is that BIOS 088 which you mention ? The version number seems off.

[kvarq]

Hello everyone,

I'm gonna join Z490 club soon, will be paired with 10900K.
Not yet decided if I'll go for a Formula XII and use 4x8GB 4000C15 kit or turn to Apex XII and use 2x16GB 4000C19.
Wondering if 4x8 is going to be fine now on Z490, wondering about IMC & stuff.
I'm already very happy with my 2x8GB 4000C15, really good stuff in games, another kit from the very same batch made same week is standing by just in case I'll opt for a Formula XII.

Probably for the LAN driver I'll stick to 1.0.0.13, since I read here that there are some issues with the firmware...
WRT bios, should I stick with the default one 0403, or update to 0607?

Thank you.