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[MOD] LGA775 Support For LGA771 Xeon CPUs - Page 301

post #3001 of 12379
Quote:
Originally Posted by Carachio View Post

I have 975x (asus p5w64-ws) and ECC mode (auto/disable) i have set on disable and nothing change.
Like I said before I have once with handmade adapter post to BIOS with e5420 on 975x chipset but it was unstable(freezing/restarting) probably because APCI 2.0 was set to disable(after load default bios settings). Now after few motnhs with fabric adapters i cant even post...

One of the things I have issues with on these adapters, is them making good contact to the lands on the cpu. I use the premade ones, but I have had the CPU not boot unless I "wiggle" the cpu around in the socket to get the lands to seat in and make good contact to the adapter.
post #3002 of 12379
One interesting difference I do see between the X33x3 and the 5400 series is the X33x3 does not support intel demand based switching.

"Intel® Demand Based Switching is a power-management technology in which the applied voltage and clock speed of a microprocessor are kept at the minimum necessary levels until more processing power is required. This technology was introduced as Intel SpeedStep® Technology in the server marketplace. "
post #3003 of 12379
Quote:
Originally Posted by DeadSkull View Post

What core voltage?
VCore 1,4V (as Bios setting, it was about 1,36 after drop, Load Line Calibration Disabled)
NB voltage 1,58V
520 FSB was unstable, my PC could POST (every time) but entering to windows was out of question. Higher FSB resulted in POST failure.
The highest semi-stable in Windows was at FSB 480 (4,32 GHz) with same voltages. Passmark showed 6510 points and I have CPU-Z link. I didn't set more voltage since 480. I was only trying if it will POST with higher FSB. Cooling system was good (additional stand alone fan with very high airflow facing motherboard). Temps were 46C for CPU and 28C for NB with ambient room temp. about 20C.
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post #3004 of 12379
Quote:
Originally Posted by x11nt4 View Post

One interesting difference I do see between the X33x3 and the 5400 series is the X33x3 does not support intel demand based switching.

"Intel® Demand Based Switching is a power-management technology in which the applied voltage and clock speed of a microprocessor are kept at the minimum necessary levels until more processing power is required. This technology was introduced as Intel SpeedStep® Technology in the server marketplace. "

It would be great to find datasheet for X33x3 xeon series and make a comparison to 5xxx. I searched some time ago but couldn't find any. I think it is very suspicious that intel gives free access to X33x0 LGA 775 datasheets and 5xxx Xeons, but X33x3 LGA771 is nowhere to be found.
My idea is to find contacts on 5xxx that are responsible for multiprocessor recognition, disable them with insulating tape and test it on X and Q chipsets. I have Acer Q35 mobo lying around.
Edited by gagarin77 - 4/11/14 at 11:12pm
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post #3005 of 12379
Quote:
Originally Posted by x11nt4 View Post

One interesting difference I do see between the X33x3 and the 5400 series is the X33x3 does not support intel demand based switching.

"Intel® Demand Based Switching is a power-management technology in which the applied voltage and clock speed of a microprocessor are kept at the minimum necessary levels until more processing power is required. This technology was introduced as Intel SpeedStep® Technology in the server marketplace. "


x11nt4,

The X3363 & X3323 don’t support Demand Based Switching but the X3353 does. Also X3363 & X3353 support VT-x with Extended Page Tables (EPT or SLAT) but X3323 doesn’t. That’s the obvious differences from ark.intel, so it could be something else.
post #3006 of 12379
Can anybody help me modding Gigabyte EP45T-Extreme F5i bios? Please anybody add E54xx xeon microcodes and help me please add Pentium 4 640 microcode too.

Thank you guys!

Geza
post #3007 of 12379
Quote:
Originally Posted by DEVICE View Post

x11nt4,

The X3363 & X3323 don’t support Demand Based Switching but the X3353 does. Also X3363 & X3353 support VT-x with Extended Page Tables (EPT or SLAT) but X3323 doesn’t. That’s the obvious differences from ark.intel, so it could be something else.

I didn't look at the X3353. I noticed the E5405 and the L5408 also do not support Intel DBS. The Dual CPU support seems like a logical reason for the issues with the X and Q series chipsets.
post #3008 of 12379
Quote:
Originally Posted by gagarin77 View Post

It would be great to find datasheet for X33x3 xeon series and make a comparison to 5xxx. I searched some time ago but couldn't find any. I think it is very suspicious that intel gives free access to X33x0 LGA 775 datasheets and 5xxx Xeons, but X33x3 LGA771 is nowhere to be found.
My idea is to find contacts on 5xxx that are responsible for multiprocessor recognition, disable them with insulating tape and test it on X and Q chipsets. I have Acer Q35 mobo lying around.

I know! I even went onto archive.org to see if the datasheet had been posted back in 2008 when the CPU was released but there wasn't anything other than the "3300" series listed as now. The closest datasheet I can find is for the QX9750 which is also a yorkfield chip. But since it support dual cpu, there could still be a land difference from the X33x3 series. I looked at the 5400 series data sheet, specifically at the signal meanings section and I didn't see one that was called out for dual cpu support. I thought something to the effect of " #dcpu signals must be present for dual cpu operation, if this signal remains disassociated, the cpu will assume a single cpu role" If there is a land there, it is not called out as to it's function in the data sheet as far as I could find, but I haven't gone through every part of the sheet yet...

I am not sure it is really worth bothering with 5400 series on X chipsets really. Unless you want a higher multiplier but... even the X3363 is going to be a big improvement
post #3009 of 12379
@x11nt4 the thing is in my country there is more than twenty 5xxx per one X33x3 for sale. And the prices of those is over 100$. Buying from foreign countries is out of the question for most people as it involves substantial shipping fee that makes it unprofitable. If there was some way to make 5xxx series work on X and Q chipsets that would be great.
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post #3010 of 12379
Quote:
Originally Posted by patentman View Post

There should be no problem, especially with the P5Q.
I don`t think it has to do with the bios but you can check a bios I had uploaded, search & find.

It sounds like cpu is degraded or mobo or socket is not clear enough. Check the adapter too.
The memory frequency does not jump up and down according to C-states. So something you have misunderstood there.

Load setup defaults, save and exit.
If system still does not work as it should then use another bios (not likely), check socket tabs clearance, check socket pins, change adapter (clean the cpu pin side first).
I went through the whole thing again(check the pins,cleaning, fixed the plastic adapter to make sure it lines up properly)..
No more jumping everything is stable ,except the C-state. With that on still runs like a dog.
I wonder if anyone using the same setup as I..(P5Q with the e5450) and the processor is stepping down like it should.
Anywhoo.. Clocked it to 3.6 and it's very stable. I had my 8400 running 4 gig steady before no sweat.
Luckily, with the 8400 the only thing I had to change in the bios is to set bus the 444 and leave everything else on auto.
My OCZ cooler is a beast for oc.thumb.gif
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