[Merman]

Originally Posted by Lsdmeasap

First off, sorry man I have been so busy I have yet to have time add in things we have discussed. But I have been writing them up and collecting other info and doing some in depth reading about skew control as well. I will get it done trust me.

No need to apologize. You answer all the questions on this board and helping everyone should be more than enough. I thought this guide would help ease your load and give everyone a solid easy to find reference. With that in mind I see no reason to rush.

Originally Posted by Lsdmeasap

Sorry I forgot to add a similar note to tWR that I added to tWTR, they both will always be different then set in the BIOS, I will add the other note in. I think it is by 8-9+ depending for tWR. The thing I guess I need to also address is between chipsets sometimes tWTR needs to be set to whatever in the BIOS that equals 11-12 in Memset, which is often 4-5. tWR is a bit different on how things should be set depending on a few other factors and what things are set on.

Interesting. I see I'm just getting my feet wet.

Originally Posted by Lsdmeasap

When you say crash vista when trying "Recommended" settings, who's recommended settings are you referring to?

The recommended settings in this guide. Its basically tWR as when my settings are lower than recommended I don't try going lower. My tWR setting is 6 and going lower hard crashed Vista. By hard crash I mean Vista stopped giving a warning that it stopped so no damage is done.

Originally Posted by Lsdmeasap

Yes, tRD is the single most thing that affects Memory Bandwidth that is why it is often called the Performance Level.

As for your crashing, what settings in the BIOS did you have that make 800 crash on you? If it was tRD of 6 then that is likely the setting that caused it, it may have worked for you at 2.4 multi because of a strap being used or not.

That doesn't make sense to me. The ram was running stable at 960MHz, CPU at 3.6GHz with tRD at 6 with the multiplier on Auto. I was thinking of upping the CPU frequency but wanted to set memory frequency to 800MHz first. I changed the mulitplier from Auto to 2.0. The system rebooted twice and reset the BIOS to stock settings. Doesn't make sense to me maybe I made some other mistake. ???

Re-reading your reply mentioning the "strap" my BIOS has on the right markings to show which multiplier coincides with which strap. At least that is my uderstanding. ??? Seems I have to take another look at this and fully understand this section of the F8 final bios for the P35-DS3L.

Though for 400MHz memory to run at 960MHz with a 400MHz FSB, its 400*2.4=960MHz. So 400*2=800MHz and stock 333*2.4=800MHz Am I missing something here???

Originally Posted by Lsdmeasap

I guess I would need a better table of what you used at each to understand, you saying things about the SPD have me unclear what you used even with your table. Since the SPD is not used in Intel boards fully, nor does the SPD contain all settings info I am not sure if you chose SPD from memset or what you were seeing in AUTO on the left in the BIOS (Which would be incorrect, often change, and ONLY be used at that specific time in the BIOS)

Sorry I thought my post was clear. The SPD settings were taken from CPU-Z and Everest. See the first paragrph of my last post listing my system. My understanding is these programs are reading the SPD info stored in the memory. In CPU-Z the info is under SPD. In Everest the info is under Motherboard/SPD/Memory timings.

My table of Settings shows BIOS settings for 3 and 3.6GHz, the guide's recommended settings, and the MemSet column showing any different settings than what was set in BIOS. As you explained tWTR and tWR should report a different setting than what was set in BIOS. Though tRTP also shows a small different setting.

Originally Posted by Lsdmeasap

Yes AUTO does try to read SPD info in a Intel Board and sometimes gets part of it correct. Intel has been working on getting this better like Nvidia Chipsets EPP and how they read them. They have implemented XMP, which is similar.

SPD is programmed in memory to go above JEDEC standards and is made to be read by EPP programming, which is why AUTO often in not correct it getting these settings

The only Auto setting used was the Memory Multiplier. I know that 2.4 was used because it shows the memory frequency in the BIOS and CPU-Z confirmed it though it reports the setting as 5:6. Though the P-35-DS3L did read the memory's SPD very accurately.