Dell Precision T7400 bios Rom

[giboni]

To cover the PADS. The little circles on the chip simply use cheap black vinyl tape. Works for me. 3 roll's .99cents. The conductive pen is cheap. So is the compound. Must have if you are going to O.C. mod these Xeons. The conductive pen is very useful to have. You can Over Clock/Mod 775 and a lot of other CPU types.

The person having the issues with the Blue Screen. Install one chip at a time. Some times I cover more than the two pads or not cover them completely. Make sure stepping is the same.

Can't find the link's now but Over C locker's were OC their Early 2008 Mac Pro's and 2007. With Pad/BSEL Mods and VID Mods.

Unfortunately when I run Prime benchmark. All my T7400's are getting the B.S. screen also at 3.8 with the previously noted E series 3.00 ghz 1333 pad modded to 1600 MHZ. And eventually at 3.5.5 399 divider.

This suggests to me a VID Modification will be required.

For some reason I just cannot figure out what pads have to be covered or pulled to ground yada yada. Could be just too tired when I finally have time to play with my hobby. Like now. So will post the links and information. Perhaps some one else can figure it out.

One thing I feel sure of. From Bios. Speed stepping and the other feature of the CPU has to be disabled first. So that the Chip stays at 3.5.5. The jump solely from the pad mod. No load idle or light load the chip only runs at 2.4 ghz or so

Then the vid mod. Using a program from http://www.majorgeeks.com/CPU-Z_d425.html CPUZ See the voltage at 3.5.5 and then at 3.8 with setFSB.

Bet it will be 1.35 V

Xeon E5450

SLANQ (C0)
SLBBM (E0)

3 GHz 2 × 6 MB 1333 MT/s 9× 0.85–1.35 V 80 W LGA 771 November 11, 2007

EU80574KJ080N
AT80574KJ080N

I am guessing the chip needs at 3.8 1.45 V perhaps up to 1.75 V to run stable. Just to be safe. Added fans to pull air faster from the original Heat Sinks. And a few at the rear of the case. The T7400 and its cousins are a marvel as to keeping the guts cool. Also added a small fan on top of the either south bridge or north bridge aluminum heat sink.

Below is the 771 Vid chart. In this Link.

http://www.overclock.net/t/1338218/xeon-...-vid-chart

Then the basic theory of doing a Vid Mod.

http://forums.2cpu.com/showthread.php?t=77937&highlight=Xeon+Cloverton

Intel Data Sheet on E5450

http://www.manualowl.com/m/Intel/E5450/Manual/296651

There is no doubt the E5450 will work excellent as an upgrade to these Boat Anchors. The Key to stability is now a VID Modification to the chip.

This mod when figured out will work on the other candidates for the fastest Dell T7400 possible.

X5470

http://ark.intel.com/products/35430/Inte...33-MHz-FSB

Way tooo over priced for me. Keeping an eye out here in NYC for Used Servers at Marshal's sales etc here in NYC that have a pair.

3.33 GHZ Pad mod. Boot's to 4 ghz easily. then set FSB whoo 4.4 ghz? But obviously will have to have a Vid mod to be stable in the no Bios Options T7400. Now when I finally get a pair reasonable. Stick them into my Skull trail First LOL ! 5 ghz? Since the Skull trail gives me Bios Options. Will put a pair of E5450 BSEL. Then push it to 3.8. Then determine the Voltage the chip needs to be stable with an operating system.

Not tonight too tired.


Reasonable have a pair on the way $40.00 shipped.

X5460 3.16 GHZ 1333 bus BSEL/Pad mod Definitely will hit 3.8ghz on Boot up in the T7400. Push it to 4ghz with SetFSB. Stability will require

the Voltage modification on the Chip.

If you want a decent no bloatware operating system fast. Try before you buy 2008r2 work station. Also remember if you have a COA Sticker on the case. Simply install what you want. Enter that C.O.A. Then with your legal copy. Get windows 8 for $40.00..............smiles.

Well have to work tomorrow. Need to sleep. Maybe some one else can go through the Data sheet and figure out how to raise the voltage to the chip !
This vid mod then would be applicable to the other chips mentioned.

Maybe some one will have pity. Mod the bios of the T7400. Over Clock Option's !!!!!!!!!!!!!!!!!!!!! Hey they come standard with a 1000 Watt PSU !

Happy Holidays ! Happy modding your Beast work station Boat Anchor !

Could not sleep. Found a better link to the Intel 5400 Xeon series specification sheet a PDF.

http://parallel.ru/sites/default/files/r...318589.pdf

Go to page 17. Intel did not release a 3.8 GHZ 5400 Xeon ! This surely points to the potential of these chips. Common sense dictates that the Mother boards with these chip sets to handle 5400 series Xeons are capable of supporting these clock Speeds.

The only limitations are probably in the Bios such as the dell 690. Getting one soon Cheap with a 1000 watt Supply $100. Shipped. Shame. But my Skull trail needs a Home. Will play with the 690 board.

Table 2-1. Core Frequency to FSB Multiplier Configuration
Core Frequency to
FSB Multiplier
Core Frequency with Core Frequency with
333.333 MHz Bus Clock 400.000 MHz Bus Clock

Notes
1/6 2.40 GHz 2 GHz 1, 2, 3, 4
1/7 2.80 GHz 2.33 GHz 1, 2, 3
1/7.5 3 GHz 2.50 GHz 1, 2, 3
1/8 3.20 GHz 2.66 GHz 1, 2, 3
1/8.5 3.40 GHz 2.83 GHz 1, 2, 3
1/9 3.60 GHz 3 GHz 1, 2, 3
1/9.5 3.80 GHz 3.16 GHz 1, 2, 3

Go to page 18

BSEL[2:0] Frequency Table
BSEL2 BSEL1 BSEL0 Bus Clock Frequency
0 0 0 Reserved
0 0 1 Reserved
0 1 0 Reserved
0 1 1 Reserved
1 0 0 333.33 MHz
1 0 1 Reserved
1 1 0 400 MHz
1 1 1 Reserved

Wonder what would happen in the skull trail with this chip if all three pads are covered? 111 reserved? 1800 mhz ? Would set the multiplier fixed at 1/6 though.

Keep Xeon Tux Chart in another window on your screen. Use Multiple monitors. But one good one is enough really.

The Dempsey and Woodcrest work in the T7400 by the way. Suggesting that Xeon Tuxes diagram is accurate for the 5400 series. Dell 690's are sold on Ebay with Dempseys and woodcrest. Bet those boards will do 1600 mhz from 333 to 400. Just the Bios limiting them.

Go to page 47. Xeon Tux's drawing looks the same. The Woodcrest Dempsey has 7 vid pads. The 5400 series 6.

Guess next step is to drop two E5450 into the skull trail to determine the Voltage required to run stable at 3.8.

Then figure out the Vid mod required to get that voltage out of the T7400 mother board. Hopefully just padding not conductive pen LOL !

Now to sleep !

Okay a few minutes from the Holiday madness. Here is a great link with pictures on the BSEL?Pad mod. It really is that simple.

http://forums.pcper.com/showthread.php?4...-Uncle-B-s&s=442d491780d5f0a07711d198f95ad614&p=4069255#post4069255

[elik745i]

Merry Christmas!

Dear John, did you read my previous post, where I told that VID mod is possibly the solution to get BSODs when using BSEL Modding?

I also attached PDF, where I put sufficient illustrations on how and to what voltage which contacts need to be covered/connected?

My questions were about how it's normaly done? Covering is not an issue, ut connecting contacts are not that easy as some are next to each other and others are quite far in the raw. I assume to connect those tiny wire need to be used, but on how to connect them in order to get others intact is under big question.

Is ther a way to reprogram the CPU from Windows? like flashing microcode, I may be wrong but I think there must be programmable chip inside CPU, which i programmed in the factory, responsible for identification of the CPU, voltage clock e.t.c. did anyone heard about making such modding?

[giboni]

Hi,
Happy holidays. Just looked at the PDF. Nice work. If not mistaken though possibly. Under Load when EIST kicks in the chip is going to pull more voltage
or receive more voltage from the board.

Your Voltage reading. Is it at IDLE ? at 2.4 GHZ

Or at Full Load with the chip running at its rated Maximum? Without the Over Clock?

Bet different step-pings & Model numbers are going to be different. EG. E series are 80 watt dissipation chips. X designation 120 Watt or 150 Watts.

Have to run. Holiday Obligation's. Here are some links. VID Mods do not always have to be with conductive Pen. Now that I think of it. Have a pair of Chips somewhere E5420 is iT ? No matter 2.66 ghz Xeons 771. 1333 Used them only once to test a used T7400 Bare bones that came to me without CPU's.

Have to just fire up the Skull Trail. no case yet. attach a Sata drive. Put Business 64 on the drive. See what the voltages are at Idle and under load no OC. Then O.C. But surely the stability issue is to increase voltage to the chip.

I will look at everything plus re-read find some links with an explanation if possible.

Will look for them in the drawer of chips

Below is a Link I found with a theory on how to do it for our 5400 series chips. 1.4 V sounds like the Logical first step from 1.35. fine wires worked in the days of modding slot 1 etc LOL.
But using a fine PENCIL. Pencil contains Lead ! Might work ? Bottom is the Link.


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10-09-2008 03:11 PM #22
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Well, it might have sounded like the mod is done and tested, but i will make myself clear now: it is only an extension of the reasoning behind BSEL mod.
My knowledge is based on:
- Intel datasheets, especially http://download.intel.com/design/xeo...hts/318589.pdf
- Shamino's VID mod on VR-Zone
I would gladly test it myself, if I had any LGA771 CPU.

PLEASE NOTE THAT THIS IS NOT TESTED. IT IS ONLY A GUESSWORK.

This is only true for X5*** series CPUs, but same method can be used to find VID mods for other CPUs.
These are the five VID pins isolated and numbered:


And this is the table of possible Vcc (Vcore) values for different VID combinations:


Best way to mod would be to check your CPU's VID (afaik CoreTemp sees it; if not, it should be on the box, where FPO code is),
then compare and find at least one 0 and one 1 that are common for your VID and your desired VID.
Then you would mask and connect the pins appropriately.
For example: you have 1.000V and you want to have 1.400V.
1.000V is:
1-1-0-0-0-1
1.400V is:
0-1-0-0-0-1
Only VID6 is different, so you just have to connect VID6 pin to ground or to another pin with ground. VID6 is easily conectable to pin AM4 (between 2 and 6) which.........................

http://www.xtremesystems.org/forums/show...n-Bsel-mod

[giboni]

Voltage Identification (VID)
The Voltage Identification (VID) specification for the Quad-Core Intel® Xeon®
Processor 5400 Series is defined by the Voltage Regulator Module (VRM) and Enterprise
Voltage Regulator-Down (EVRD) 11.0 Design Guidelines. The voltage set by the VID
signals is the reference VR output voltage to be delivered to the processor Vcc pins.
VID signals are open drain outputs, which must be pulled up to VTT. Please refer to
Table 2-16 for the DC specifications for these signals. A voltage range is provided in
Table 2-12 and changes with frequency. The specifications have been set such that one
voltage regulator can operate with all supported frequencies.
Individual processor VID values may be calibrated during manufacturing such that two
devices at the same core frequency may have different default VID settings. This is
reflected by the VID range values provided in Table 2-3.

The Quad-Core Intel® Xeon® Processor 5400 Series uses six voltage identification
signals, VID[6:1], to support automatic selection of power supply voltages.

Table 2-3
specifies the voltage level corresponding to the state of VID[6:1]. A ‘1’ in this table
refers to a high voltage level and a ‘0’ refers to a low voltage level.

If the processor
socket is empty (VID[6:1] = 111111), or the voltage regulation circuit cannot supply
the voltage that is requested, the voltage regulator must disable itself.

See the Voltage
Regulator Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 11.0 Design
Guidelines for further details.

Although the Voltage Regulator Module (VRM) and Enterprise Voltage Regulator-Down
(EVRD) 11.0 Design Guidelines defines VID[7:0], VID7 and VID0 are not used on the
Quad-Core Intel® Xeon® Processor 5400 Series; VID7 is always hard wired low at the
voltage regulator.

The Quad-Core Intel® Xeon® Processor 5400 Series provides the ability to operate
while transitioning to an adjacent VID and its associated processor core voltage (VCC).
This will represent a DC shift in the load line. It should be noted that a low-to-high or
high-to-low voltage state change may result in as many VID transitions as necessary to
reach the target core voltage. Transitions above the specified VID are not permitted.
Table 2-12 includes VID step sizes and DC shift ranges. Minimum and maximum
voltages must be maintained as shown in Table 2-13 and Table 2-2.

The VRM or EVRD utilized must be capable of regulating its output to the value defined
by the new VID. DC specifications for dynamic VID transitions are included in
Table 2-12 and Table 2-14. Refer to the Voltage Regulator Module (VRM) and Enterprise
Voltage Regulator-Down (EVRD) 11.0 Design Guidelines for further details.
Power source characteristics must be guaranteed to be stable whenever the supply to
the voltage regulator is stable.


Okay . It seems that there is no transitioning .1.25 V Core at 3.5 ghz when speed step is off.

Starting Sisoft sandra benchmark test. At 3.59 GHZ still shows 1.25 v. No Blue Screen . But computer has issues. Sluggish Slow.

Now to turn Speed Step on. A note. On a few threads OC of 775 CPU. Speed Step still works after a VID MOD on that Intel Architecture.

Boot is at 3.59 GH. With Speed Step enabled in BIOS 1% load on Cores Business Vista 64. Vcore is 1.100 at 399 x 6 at 2398.98 MHZ Speed Step enabled in BIOS.

Soft Ware being used is Core Temp. Downloaded from Major Geek.

The T7400 is at 1.25 Vcore at 100.% CPU Usage. My feeling is. Due to what is known as Droop. Vcore dropping under load. Going for 1.200 on Boot up with Speed Step Enabled.

Am assuming that if it starts at 1.200 instead of 1.100. Speed step will transition to 1.35 under full load. 1.25 Vc +.100 is 1.35 Vcore?

Will find out. Now to look at the charts. Tried posting them but had to undo. Did not look like the Intel PDF. Maybe some one else can post it for me.

Vid 0 and Vid 7 are not used on this series of Xeons. Read above.

So now looking at the intel Chart.

Vid 6 VID 1
1.100 Vcore is. 1 0 1 0 0 0 Our target Vcore on Boot up with Speed Step Enabled is 1.200.
Vid 4
According to the Intel Chart. 1 0 0 0 0 0 1 is 1.200

Vid 4 and VID 6 have to change . Vid 4 has to be pulled low Vid 6 has to be pulled high.

Now to go to XeonTuxs Chart and information. Then to look at the Land coordinates (PADS) of the Chip. Paying attention to the little arrow on the corner of the Chip.

VID 4 has to be grounded. So are there any Pads/Pins around it that are grounded? Lets see. Back to the Vid Chart !

Now we see on XeonTuxes Chart that to the left of VID 4 it is 0. 1>0 Bringing High to Low.

Ok So Could use a Pencil before the Conductive Pen to test. Pencil is easily erased. Not sure about the conductive pen LOL ! The reason is. I wonder if this Land/Pad is always at 0 ? Many transitions on this Intel Chart?

Now we have to see where to connect Vid 6 which is at 0 to 1 High. According to XeonTux just a bit of tape over the Land/Pad.

Back to Tuxes chart and to make sure back to the Intel charts/map of the lands (PADS)

Land/Pad AK3 is reserved. Hopefully that means it is a Ground. Guess will find out !

Time for Sleep. Will Mod a Chip in a few days. Then give it a shot. Hopefully it works and provides the needed voltage for Stability at 3.800. mhz With Set FSB.

Now that would be some thing if Setfsb now will go past 410? Then back to the drawing board. More Voltage !!!

Thought I read a post some where that this PLL on some boards hit 500 X Stable? Hmmm got to understand how the PLL works LOL !

[giboni]

Ah after a good nights sleep. Waking up to my family burning food on the kitchen stove on Christmas eve.

Realized have it slightly wrong. Disregard the idea of going from the stock voltage with speed stepping on. Bumping it up a notch.

Why? Because the Bios Code recognizes the E5450 and assigns the voltage maximum which is 1.25 vcore.

We have fooled the Bios. Hence the Mother Board with the BSEL/ Pad mod to boot at 1600 MHZ.

Question? What Voltage to Fool the MB and Bios to release to the Chip?

Well the Specs state a Design Maximum Speed for this series of CPU as 3.8

and a Vcore maximum of 1.35.

my initial Goal on Air is to arrive at 3.800 mhz stable. So I need 1.35 vcore. Back to the Intel Vid Chart !

It list's. 0 1 0 1 0 1 for 1.35 Vcore.

It is currently at with the current Bios 0 1 1 1 0 1 for the stock UN-modified Vcore of 1.25

Starting from right to Left. (Intel Chart) We have to change Vid 3, from low to high,

Fantastic ! According to Xeontux's instruction's. Vid 3 is located at Land (Pad) AL 6. So then simply a spec of electrical Tape to insulate the land will bring it to High?

No time to do the Mod. Christmas Eve Madness. Hopefully others fallowing this thread will go through my methodology and correct it if I made a mistake.

Am a bit confused as to why by just covering the land will make it high. But does make sense if it is not being pulled low by grounding.

Maybe in a few day's can do the Mod. As I have spares of E5450 and at least one pair of the other Poster's chips.

Happy Holidays and Happy Modding !

[giboni]

Okay. Christmas Day Early morning. Quiet for a change.

Here are links that I finally stumbled upon. Lot of information including downloads of free programs. Some Posts are in fact dedicated to the T7400
over Clock.

This first link has XeonTux's complete diagran including BSEL Pad Mod for 1333 to 1600 for these
Harper Town Xeon Processors. Specifically for E5450 1333. Should be applicable to the group. Except of course the Harper Town's already at 1600 mhz.

http://forums.2cpu.com/showpost.php?p=743778&postcount=180

The below link discussing OC of Harper Towns. & Over Clocking T7400. Downloaded the program mentioned to control/Speed up Fan Speed in the T7400. Remember they had the early AO2 and early AO3 bios only. Possibly later Bios's will speed up the Fan's. My feeling not. At 60c on the cores
the fans on the T7400 do not speed up. but that was only for 10 minutes before BSOD. So will try the program mentioned in the discussion. Already downloaded it from a German webSite.

The other program have. It misreads and displays the CPU speed incorrectly. Though useful. Other programs mentioned. To desable EIST and Speed Step and to even lower the fsb multiplier.

http://forums.2cpu.com/showthread.php?t=87791&page=7

Happy Holidays ! Uhh have to work today. I owe I owe. Off to work I go !

[giboni]

                Finally some free time. First a repair disc. Config file damaged. One chip at a time.

Covered the pin/pad correctly. speed step on. Fan control. CPU Z. Si Soft Sandra bench test.

No change. Still 1.25 vcore. no BSOD. Double check. Pad is covered. okay. Since my goal is 4 ghz with SetFSB going to do this vid mod.

Seen this with several different Xeon types including harperTown I think.. Here is the Link. Going to go for broke. 1.4 Vcore. Hopefully Air Cooling will be enouph.

http://blog.macsales.com/11354-adventure...%93-part-2

No conductive pen. So old school. Worked with pentiums and mother boards. A PENCIL. If don't post back is because PENCIL Did not work. Have to order the conductive pen.
Have a bit of Sticky Aluminum. Will try that too before calling it a night.

[elik745i]

Any success?
I see you have soldered some pins together?
Did it worked?

[jnowak1054]

How did the mac book heatsinks work out on these systems?

[angelice1987]

Don't suppose anyone has any info on bsel mod of 3.2 5060's

---

i of course only meant to mod them to 1333 just wondering if there was some info as i havent found much about bsel mods with xeons except here

---

didnt mean to grave dig just saw last guys post was from 2013 didnt realize everyone elses was from 2012