Gigabyte EX58-UD5/Extreme Discussion Thread

[phsinc1]

anyone is using this ram "TR3X6G1600C7" with his UD5 or UD4P, I can get a stable 200x20 configuration but I must have all the memory sub timmings @ Auto, if I try to change for exmaple TRTP [auto set it to 9] for 6 like the SPD says, it will boot but give me error about TPM encryption press F10 to continue then it will recover from a bad OC and it won't boot again and I have to clear cmos, I tried with XMP profile and without XMP profile, with some seach I knew that this ram use BBSE Elpida chips, I'm using the latest beta bios.

[Lsdmeasap]

anyone is using this ram "TR3X6G1600C7" with his UD5 or UD4P, I can get a stable 200x20 configuration but I must have all the memory sub timings @ Auto, if I try to change for example TRTP [auto set it to 9] for 6 like the SPD says, it will boot but give me error about TPM encryption press F10 to continue then it will recover from a bad OC and it won't boot again and I have to clear cmos, I tried with XMP profile and without XMP profile, with some search I knew that this ram use BBSE Elpida chips, I'm using the latest beta bios.

Sorry, I do think I answered this for you at Tweaktown maybe not, but I was a bit hasty in my reply and forgot to tell you the rules concerning settings. Your mention of TPM Error screens made me feel I had to chime in and help you out with at least a reply, then it grew!

I spent a long time speaking with Gigabyte and the BIOS Engineers on the TPM error issue when setting advanced memory timings, so I thought I would let you know about all the rules and my findings. The error you are seeing I do believe is not caused by tRTP, and you can verify that by setting everything to auto and then only trying to set tRTP.

I do believe you may be seeing this error due to other incorrect settings, please spend a few minutes and take in the information below. Hope this helps you out, I know I was frustrated for a long time in regards to TPM Errors and memory timings. I think it is all resolved now though

You must follow this rule when setting tWTR:

tWTR Must be Write to Read Delay/Same Rank - (tWL + 4)


Also because these settings can cause the same or similar TPM errors for you if set improperly these rules must also be followed:

tWTP Must = tWR + tWL + 4
tWL Must be CAS Latency -1


** Sometimes I find tWL does not correspond correctly in regards to the rule and may be +1 what it should be, so keep that in mind also when setting either tWTP or tWTR. So find and set this, and test with Memset to find the actual Value in the BIOS then apply to the above rules. For instance I found at CAS 7 I can only set tWL to CAS Latency + 1, around 1600Mhz that is. And at CAS 8 I could either set tWL to Match CAS Latency value or CAS latency +1 again.

The above rule concerning tWL should be CAS Latency - 1 was given to me by Felix. So I do believe it is correct, but maybe not for X58 anyway? Not sure if he tested this or if it actually applies to X58 as I could never get it to apply properly following those rules. I have not spoken with him in a few months about it though, maybe he has done more testing or reading and could better answer you now on tWL and X58 as to why this happens.

And there is an offset between what you set in the BIOS for Write to Read Delay/Same Rank and what you are shown in windows/memset, this varies from different main timings, multiplier and freq, so you will need to test setting at a given speed until you know what the offset is. Then you can adjust the rest or not accordingly to change this value. I also believe this is directly affected by tWTP and thus also it's related settings. More thoughts by Eva2000 on this are linked below

Additionally the above statement on tWL Rules, must follow the intended tWL Rule (CAS Latency -1) and not the BIOS settings for tWL.

** This statement may be disregarded after some quick testing with F9c (UD4P) for a reply to this post. I will leave it for others just in case it may apply to their board or if they are using an older BIOS. It seems after a quick test to reply to you, that this issue I found with previous BIOS in regards to the above tWL rule may have been corrected now. I can set tWL to CAS latency - 1 now, so looks to now be resolved.


The Write to Read Delay / Same Rank setting is in the turnaround settings in the advanced memory timings page, per each channel

Eva2000 also posted some of his strange finding for a few settings in relation to DFI Boards. I am not sure if his findings are the same as mine, or if we both have different thoughts or therories on the matter.
http://i4memory.com/f80/initial-note...8-t3eh8-18821/

I was doing some tWTR and tWTP Testing but got side tracked and have not ventured further into things yet, but I have fully tested a wide range of tWTP and had an ongoing discussion with Gigabyte several months ago on the subject of memory timings and getting the same errors you mention when setting certain ones. After some work and several Beta BIOS's to try and resolve the matter I finally got them to add in tWL and tWTP to try and alleviate the issues mentioned. I just have not had time lately to test things in regards to this matter and so our discussions with the BIOS engineers and testing have not continued since late march.

I have ran a quick test for you just now, hope this can better show you with the above rules how things apply.

Here is a screenshot of Memset with the settings below applied. BIOS F9c UD4P

tWTR ...................................... 2 (Must be Write to Read Delay/Same Rank - (tWL + 4) So here we have Write to Read Delay/Same Rank 12 - tWL 6 + 4 = 2
tWR ........................................ 10
tWTP ....................................... 20 (tWTP Must = tWR + tWL + 4) So here we have tWTP 20 = tWR 10 + tWL 6 + 4
(Grrr After all the hassle and testing I went through on this setting, today I find a variance of at least 2 is allowed in the current BIOS I am using!!! Anyway, stick to the rule until later, then you can fiddle )

tWL ........................................ 6 (tWL Must be CAS Latency -1) So here we have CAS Latency 7 - 1 = 6
tRTP ....................................... 6





And the BIOS Settings I used for this quick test to show you how the above info works when setting these.






Please note, these settings may or may not be optimal (likely not) I just set these as a quick test to verify that the TPM boot issue was not present and to try and show how these settings and rules apply to all things considered.


Sorry for all the confusion this post may cause but I had to reply since this had bothered me for quite some time. I spent several months and MANY Emails back and forth trying to work with Gigabyte and the BIOS Engineers to try to get these settings corrected and added to the BIOS. And with our discussions on the subject stopping back in March due to my lack of testing time and never getting back with them on the subject I was not sure if they had fixed things yet or not, and which of my previous findings still applied.

Hope this helps everyone, and not makes things worse

@ Eva2000

Care to chime in with your additional thoughts or findings if you are reading this? It would be greatly appreciated!!