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ROG Crosshair VI overclocking thread - Page 1019

post #10181 of 17133
Quote:
Originally Posted by Raja@ASUS View Post

Quote:
Originally Posted by Johan45 View Post

You said above 3200 you needed bang on 80 ohms, would this setting help in all boot situations? I'm willing to put time in as I'm stuck at 3744. Have went at 3800 from many different directions and still can't seem to get there. I know it's not my sticks. thumb.gif

EDIT: not 80 ohms just that setting in general if dialed in correctly


All BOOT situations as in restart, POST from standby, and POST from AC power cycle? On Praz's test system and mine, yes.

I don't know how much variance you will see as you move higher up the chain, but once you get to the point where a single step change of ProcODT when moved up and down (from a value that POSTs) results in a memory training failure, the headroom for stability is limited. Things that affect headroom are voltage (SoC, DRAM voltage, references), timings - you know, the usual pesky items. Eventually, you're at the limit and nothing helps. It is also possible that the low density kits are already at optimum ODT..
OK so just to clear my head , I could pick an easier target of say 3200 and find the "sweet spot" that way? Adjusting ProcODT until I get that boot/no boot scenario? Like a reference point.
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post #10182 of 17133
Quote:
Originally Posted by r4m0n View Post

To add another data point about ProcODT:

Stable: F4-3200C14Q-64GVR (4x16GB) - BIOS 0081 - 100 BCLK - Strap 3200 - 18-14-14-36 - VDDR 1.4 - VBOOT 1.4 - VDDP 1.0 - ProcODT 48

Default ProcODT boots (53?), but was having errors on IBT. I've gone first to ProcODT 80 which didn't even boot, then down to 60 which increased errors. The one below 48 doesn't trains as well.

Hello

For memory testing GSAT or HCI is a better option. Most everything else can pass including Prime and IBT where these two will uncover errors.
post #10183 of 17133
Quote:
Originally Posted by r4m0n View Post

To add another data point about ProcODT:

Stable: F4-3200C14Q-64GVR (4x16GB) - BIOS 0081 - 100 BCLK - Strap 3200 - 18-14-14-36 - VDDR 1.4 - VBOOT 1.4 - VDDP 1.0 - ProcODT 48

Default ProcODT boots (53?), but was having errors on IBT. I've gone first to ProcODT 80 which didn't even boot, then down to 60 which increased errors. The one below 48 doesn't trains as well.

Good man. Does it POST consistently from standby, reset, and power cycle?
post #10184 of 17133
Quote:
Originally Posted by Johan45 View Post

OK so just to clear my head , I could pick an easier target of say 3200 and find the "sweet spot" that way? Adjusting ProcODT until I get that boot/no boot scenario? Like a reference point.

I'd probably use a stress test like HCI Memtest, and find out where its falling over. Assuming all else is set well, I'd then start tuning ProcODT. It does help to dial it in if you find the tipping point on Auto. Once the system is not POSTing at the overclocked memory frequency, you start adjusting ODT to see if it results in a successful POST. Then you stress test to see where you need to go.

There may be some variance from system to system also - even with a given memory kit.
Edited by Raja@ASUS - 4/19/17 at 3:46pm
post #10185 of 17133
Quote:
Originally Posted by Raja@ASUS View Post

AMD CBS.

Running 082

Bios will not save ProcODT settings. Reverts back to Auto. Does not show change when saving.....
post #10186 of 17133
Quote:
Originally Posted by Raja@ASUS View Post

Quote:
Originally Posted by Johan45 View Post

OK so just to clear my head , I could pick an easier target of say 3200 and find the "sweet spot" that way? Adjusting ProcODT until I get that boot/no boot scenario? Like a reference point.

I'd probably use a stress test like HCI memtest, and find out where its falling over. Assuming all else is set well, I'd then start tuning ProcODT.

Thanks Raja, Might be a few days as time permits but I'll look into it and report back on my sticks/chip
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post #10187 of 17133
Quote:
Originally Posted by r4m0n View Post

To add another data point about ProcODT:

Stable: F4-3200C14Q-64GVR (4x16GB) - BIOS 0081 - 100 BCLK - Strap 3200 - 18-14-14-36 - VDDR 1.4 - VBOOT 1.4 - VDDP 1.0 - ProcODT 48

Default ProcODT boots (53?), but was having errors on IBT. I've gone first to ProcODT 80 which didn't even boot, then down to 60 which increased errors. The one below 48 doesn't trains as well.

Quote:
Originally Posted by Raja@ASUS View Post

Good man. Does it POST consistently from standby, reset, and power cycle?

Here I have F4-3200C14Q-64GVK - BIOS 0082 - 101.4 BCLK - Strap 3200 - 18-16-16-38 - VDDR 1.41 (probably could be lower) - VBOOT auto - VDDP 0.9, ProcODT Auto.

Never any post errors when restarting or cold booting, or waking from sleep. Though I haven't run any extensive memory testing, just practical use.
post #10188 of 17133
Quote:
Originally Posted by Kildar View Post

Running 082

Bios will not save ProcODT settings. Reverts back to Auto. Does not show change when saving.....


1) Revert to Auto means unsuccesful attempt at POST and went into safe mode, I think. Be gradual with this. Don't set an arbitrary frequency and go for it.
2) It won't show that setting on save - nothing wrong there.
post #10189 of 17133
Quote:
Originally Posted by Reikoji View Post


Here I have F4-3200C14Q-64GVK - BIOS 0082 - 101.4 BCLK - Strap 3200 - 18-16-16-38 - VDDR 1.41 (probably could be lower) - VBOOT auto - VDDP 0.9, ProcODT Auto.

Never any post errors when restarting or cold booting, or waking from sleep. Though I haven't run any extensive memory testing, just practical use.

Good to know Auto is okay for you. Might be worth stressing the system and see if it holds up. Also might be worth experimenting with a higher frequency and seeing what happens - that is if you're curious enough to find out.
post #10190 of 17133
Quote:
Originally Posted by Raja@ASUS View Post

1) Revert to Auto means unsuccesful attempt at POST and went into safe mode, I think. Be gradual with this. Don't set an arbitrary frequency and go for it.
2) It won't show that setting on save - nothing wrong there.

Gotacha....
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