havli wrote:
From my experience, Gallatin 3.2 / 2M L3 at 533 MHz FSB performed very much the same (maybe 1% difference) as when running FSB 800. Don't forget all (most?) Xeons DP have unlocked multiplier from 12 (i think) up to the default value. You can lower the multiplier in BIOS and then get FSB 800 using setFSB in windows. Perhaps NCCH-DL even supports this FSB in bios (while PC-DL or PCH-DL does not)
3.6 GHz is not that easy on gallatin, at least with default vcore. But 3.4 might be possible. The issue with 4MB Gallatin (and every other 400 FSB Xeon for that matter) is memory divider locked at 1.33... so you can't run them at FSB 800 and DDR 400. This is the maximum I could do with mine https://abload.de/img/xeon_mp_3.0_spi_1m_33qqu3i.png Btw - I have two MPs and the other one hits the wall at 3.3 GHz, so 3.6 GHz is not that common.
With the the Asus NCCH-DL motherboard the CPUs must be able to POST at their default multipler and the "start up" FSB settiing (133 or 200MHz) as the BIOS dosn't lower the multplier to the value set in the BIOS until after CPU initialization. If you do not force a CPU to POST at 200 MHz FSB you only get accsess to 133-166 MHz FSB (in the BIOS setup). This is why it's important to be able to POST at the default multiplier @ 200 MHz FSB even with "unlocked" Gallatin CPUs if one wants to be able to run at a lower multiplier and 200+ MHz FSB. 233 MHz is the max FSB setting in the BIOS when the start up FSB is 200 MHz.
Using a "Soft FSB tool" to set a FSB of 166+ MHz is of course an option but I'm not sure it's possible to get very far unless using a 200 MHz "start up" FSB.
If the Gallatins dosn't gain much performance from high FSB then perhaps the very cheap 3.2 Ghz (1MB) Gallatins I ordered yesterday could be worth using. They will POST at 24x133 but if their multiplier is unlocked settng the speed to 21*166 in the BIOS for 3500 MHz would probably be somewhat faster than 24 x 146 MHz = 3500 MHz, if they will handle that speed that is.
When it comes to the Gallatin with 4MB cache I know they works reliable in the older Asus PC-DL i875 motherboard as that board has native support for 100/400 MHz FSB CPUs but as it dosn't seem it's possible to force the NCCH-DL to 100 MHz FSB during CPU initialization they will not work at all unless they can handle 30x133 = 4GHz during POST. This is at least what I have gathered from reading forum posts so far but I have to admit that I have not had the time to fully read up on the matter yet.
Perhaps this was all fixed on later motherboard revisions or something. I have only had time to read what people thought and learned about the 1.02 revision of the motherboard shortly after it's release so far but I will continue to read the forum threads about the motherboard later this evening.
Edit.
It seems like the issue with Xeon MP CPUs always trying to post at 133 MHz FSB (and defualt multiplier) was solved with BIOS 1003 and there is a guy at "CPU World" that wrote that they work so I ordered me some SL79V CPUs. If they they end up not working I guess I have a reason to get me an Asus PC-DL or PCH-DL! 😁
/Edit
New PC: i9 12900K @5GHz all cores @1.2v. MSI PRO Z690-A. 32GB DDR4 3600 CL14. 3070Ti.
Old PC: Dual Xeon X5690@4.6GHz, EVGA SR-2, 48GB DDR3R@2000MHz, Intel X25-M. GTX 980ti.
Older PC: K6-3+ 400@600MHz, PC-Chips M577, 256MB SDRAM, AWE64, Voodoo Banshee.