** Official ** Gigabyte UD3 P45 Series -- EP45-UD3 / EP45-UD3R / EP45-UD3P

[RAMMAN]

just a cheap green lit 2500rpm molex case fan and 1.30 volts

i don't let it run at 500 for fear of killing a 300$ chip with vtt, since i don't need to, but 471x8.5 is easy with this one...did it on the first try...whereas my bad ud3r took 2xdozen attempts and never booted succinctly..so to speak...I personally don't think 471 will kill it - (too soon anyway) ...

i know it's only 4 phase and no pwm /mof cooling, but then it only has to last 3 month's when i replace it with a UD3P - but i'm a little tapped out after X-mas so this will have to suffice - and it was only a quick trip across the street - either that or the UD3LR /EP45T-UD3P - just for the DDR3 fun - if i can find one..

i just wanted to say that it appears ALL the Ultra Durable 3 series can do it with Quads....that's all

Thanks

edit: i'm not into the performance stuff, i just set everything from Turbo to Standard..that's all I can tell ya

could it have something to do with my board being on the older f5 bios?

btw i thought setting standard instead of turbo just loosens memory timings? or does it affect mch timings as well like memory strap does?

room temp seems to have an effect on my max fsb so most likely the nb is just getting too hot even at low volts.

[chad]

Q6600 at 4.14GHz is already very impressive, I'd reckon you are seeing the limit of the chip.


Anyway it's taken me a long time to get used to this board coming from Asus (around 1 month), and at first I really hated it...but now I've got to say I really love it. I am running the below as my 24/7 clock, it's not prime stable but is stable enough that I can run it 24/7 with no crashes doing everything from gaming to encoding and CFD simulation.

Very nice overclock!! Can you post your template please? That FSB will enable me to test the limits on my Micron D9 chips. Thank you very much in advance

[clo007]

Anyone got a template for a Q9550 at 471x8.5(4ghz) running 8 gb of ram and is prime stable?

[yogi7272]

Have anyone got true plus OCZ XTC 2 RAM Cooler on this mobo installed. Does it fit fine or there is some clearance issue due to northbridge heatsink or true ..

[Gameman]

could it have something to do with my board being on the older f5 bios?

btw i thought setting standard instead of turbo just loosens memory timings? or does it affect mch timings as well like memory strap does?

room temp seems to have an effect on my max fsb so most likely the nb is just getting too hot even at low volts.

possibly - i had instability on the ud3l f4 bios and flashed to f7 and all problems solved - boots at 471 and 500 everytime - whereas before it would set it's OWN memory speed on me for some reason - can't check right now, but i think the strap i set was 333 and memory 1:1 at 942 with 5-5-5-18 timings
at 471 the MCH only needs (on this one) 1.30 and at 500 it seems to need 1.38 - and still it seems to stay cool - although, despite all these UD3 board's strengths i gotta admit a NB sensor would have been nice...

lets hope they include that in the P55 UD3L/UD3R

[Mech0z]

Hmm I think I burned my UD3P Rev1, do you think a GA-EP45-UD3LR with active cooling on the mosfets and NB? I dont recon I can get it fixed in warrenty (There is nothing visible to see its burned though)

[graysky]

Hmm I think I burned my UD3P Rev1, do you think a GA-EP45-UD3LR with active cooling on the mosfets and NB? I dont recon I can get it fixed in warrenty (There is nothing visible to see its burned though)

Active cooling?

[Mech0z]

Well I use fans on mine when I got my Q6600 to 4.194 but I want to RMA this motherboard if I can, just not sure they will fix it ? There was smoke from somewhere around the middle part of the heatpipe.

Will they just return it and say they wont fix it?

[RAMMAN]

possibly - i had instability on the ud3l f4 bios and flashed to f7 and all problems solved - boots at 471 and 500 everytime - whereas before it would set it's OWN memory speed on me for some reason - can't check right now, but i think the strap i set was 333 and memory 1:1 at 942 with 5-5-5-18 timings
at 471 the MCH only needs (on this one) 1.30 and at 500 it seems to need 1.38 - and still it seems to stay cool - although, despite all these UD3 board's strengths i gotta admit a NB sensor would have been nice...

lets hope they include that in the P55 UD3L/UD3R

that explains a lot, the bios acts very weird, wont boot at 400 fsb and wont boot with memory divider higher than 4:5 even at 333 fsb, so all overclocking has to be done in windows

edit: i thought i would try something, so i set the bios back to optimized defaults, goes into endless boot loop. i figure my ram doesnt like 1.9v so i replaced it with my team xtreem 1300s which in the past i couldnt for the life of me get it to work past ddr2-950. it booted just fine.

so i tried 2:3 divider 2.2 vdimm 1.2 mch all other voltages normal and to my surprise it booted! on all other sets of ram that divider was unbootable. on the next reboot i disable c1e, tm2, eist and virtualisation and it goes into another boot loop wtf? i switch it off, turn it back on boots just fine even though it didnt reset bios settings, i go enable virtualisation another boot loop. switch it off, turn back on boots i change multi to 8 boots just fine.

i have been upping fsb in windows and so far ddr2-1155 5-5-5-15 2.2v is stable, will try higher shortly.

[RAMMAN]

as far as fsb limitations go, this is pretty severe. 400x8 2:3 266 strap ddr2-1200 5-5-5-15 pl8 2.2 vdimm 1.2 mch locked up 1 and a half minutes into orthos blend. i expected the memory to run into its limit at these clocks but apparently the mch has run into a wall first. all i can think of is either upping the mch core, mch reference and vdimm just to be sure or prey a different memory divider and strap will work and clock better. right now im just trying to find a divider+strap that will allow for high memory clocks and 450fsb but even that looks like a pipe dream atm

edit: tried setting 1.24 mch 0.8 mch ref with et6 locked up on the spot lol. will try 1.3 mch but stock mch ref next.

edit: raising mch core voltage actually causes instant lockup, weird.

edit2: 1200 5-5-5-15 2.2v is definitaly orthos stable but anything higher was a real headache.

1300 5-5-5-15 pl9 was only achieved 2.4 vdimm 1.3 mch 0.8 mch ref and came up with an error just seconds after starting orthos.

[the_real_7]

Just updated my bios to f10j , boots a lot faster and I saw no loss in latency or no gain which is fine .. figured out that G.skill Pi 7200 don't like at all going past 1000mhz at and setting if loosening up the timings so Sergio was right why I couldn't clock any higher it was a ram limitation , so I bought some G.skills 9600
do I set the 1066 setting to 1200 ? and the what about the divider do I set to 240d ?

[Jor3lBR]

Just updated my bios to f10j , boots a lot faster and I saw no loss in latency or no gain which is fine .. figured out that G.skill Pi 7200 don't like at all going past 1000mhz at and setting if loosening up the timings so Sergio was right why I couldn't clock any higher it was a ram limitation , so I bought some G.skills 9600
do I set the 1066 setting to 1200 ? and the what about the divider do I set to 240d ?

9600PI'S will love the 2:40B divider (1200) and they are good for 1300Mhz+++ speeds with ease...

[Gameman]

that explains a lot, the bios acts very weird, wont boot at 400 fsb and wont boot with memory divider higher than 4:5 even at 333 fsb, so all overclocking has to be done in windows

edit: i thought i would try something, so i set the bios back to optimized defaults, goes into endless boot loop. i figure my ram doesnt like 1.9v so i replaced it with my team xtreem 1300s which in the past i couldnt for the life of me get it to work past ddr2-950. it booted just fine.

so i tried 2:3 divider 2.2 vdimm 1.2 mch all other voltages normal and to my surprise it booted! on all other sets of ram that divider was unbootable. on the next reboot i disable c1e, tm2, eist and virtualisation and it goes into another boot loop wtf? i switch it off, turn it back on boots just fine even though it didnt reset bios settings, i go enable virtualisation another boot loop. switch it off, turn back on boots i change multi to 8 boots just fine.

i have been upping fsb in windows and so far ddr2-1155 5-5-5-15 2.2v is stable, will try higher shortly.

that's exactly what happened to me with my former EP45-UD3R...i got the dreaded Gigabyte boot-loop - except for one thing...it never ended...I was totally buggered... after maybe 30 tries it finally would decide to let me in - i gotta mention though this only occured after overclocking or big changes in the bios from the optimized...as a stock computer it boots just fine - which is why I gladly unloaded it

This UD3L also liked to occasionally get into the loop, but much less frequently - and rarely after overclocking went bad - all I can tell you is try updating/rolling back the bios to one that works - fixed it for me

so what do I care if it's 4 phase and no mof cooling?? - it'll do for 3 months - especially for 100 bucks...

edit:
oh, and here:


thanks

[the_real_7]

thanks Jor3lBR Im try these setting when I get home do they look right to you dude ? Im a lil lost with this 1200mhz memory

******Motherboard Intelligent Tweaker (M.I.T.)******

Robust Graphics Booster.........................[ AUTO ]
CPU Clock Ratio.................................[ 9 ]
Fine CPU Clock Ratio............................[ + 0.0 ]
CPU Frequency 4.5GHz............................[ 500 x 9.0]

******Clock Chip Control******

CPU Host Clock Control..........................[ Enabled ]
CPU Host Frequency (Mhz)........................[ 500 ]
PCI Express Frequency (Mhz).....................[ 100 ]
C.I.A 2.........................................[ Disabled ]

******Advanced Clock Control******

CPU Clock Drive.................................[ 800mv ]
PCI Express Clock Drive.........................[8 00mv ]
CPU Clock Skew..................................[ 0ps ]
MCH Clock Skew..................................[ 50ps ]

******DRAM Performance Control******

Performance Enhance.............................[ STANDARD ]
Extreme Memory Profile (X.M.P)..................[ Auto ]
(G) MCH Frequency Latch.........................[ 333 ]
System Memory Multipler.........................[ 2.40B ]
Memory Frequency 1066...........................[ 1200 ]
DRAM Timing Selectable..........................[ Manual ]

CAS Latency Time................................[ 5 ]
tRCD............................................[ 5 ]
tRP.............................................[ 5 ]
tRAS............................................[ 15 ]

******Advanced Timing Control******

tRRD[4].........................................[ Auto ]
tWTR[4].........................................[ Auto ]
tWR[13].........................................[ Auto ]
tRFC[68] .......................................[ 52 ]
tRTP[4].........................................[ Auto ]
Command Rate (cmd)[0]...........................[ Auto ]

******Channel A Timing Settings******

Static tRead Value [ 9 ] ................[ 8 ]
tRD Phase0 Adjustment [ 0 ] ................[ Auto ]
tRD Phase1 Adjustment [ 0 ] ................[ Auto ]
tRD Phase2 Adjustment [ 0 ] ................[ Auto ]
tRD Phase3 Adjustment [ 0 ] ................[ Auto ]

tRD 2rd (Differnt Rank) [ 8 ] ................[ Auto ]
tWR 2wr (Differnt Rank) [ 8 ] ................[ Auto ]
tWR 2rd (Differnt Rank) [ 7 ] ................[ Auto ]
tRD 2wr (Same/Difft Rank) [ 9 ] ................[ Auto
Dimm 1 Clock Skew Control.......................[ Auto ]
Dimm 2 Clock Skew Control.......................[ Auto ]
DDR Write Training..............................[ Auto ]

******Channel A Driving Settings******

Drive Strength Profile..........................[ Auto ]
Data Driving Pull Up Level......................[ Auto ]
cmd Driving Pull Up Level.......................[ Auto ]
ctrl Driving Pull Up Level......................[ Auto ]
clk Driving Pull Up Level.......................[ Auto ]

Data Driving Pull Down Level....................[ Auto ]
cmd Driving Pull Down Level.....................[ Auto ]
ctrl Driving Pull Down Level....................[ Auto ]
clk Driving Pull Down Level.....................[ Auto ]

******Channel B Timing Settings******

Static tRead Value [ 9 ] ................[ 8 ]
tRD Phase0 Adjustment [ 0 ] ................[ Auto ]
tRD Phase1 Adjustment [ 0 ] ................[ Auto ]
tRD Phase2 Adjustment [ 0 ] ................[ Auto ]
tRD Phase3 Adjustment [ 0 ] ................[ Auto ]

tRD 2rd (Differnt Rank) [ 8 ] ................[ Auto ]
tWR 2wr (Differnt Rank) [ 8 ] ................[ Auto ]
tWR 2rd (Differnt Rank) [ 7 ] ................[ Auto ]
tRD 2wr (Same/Difft Rank) [ 9 ] ................[ Auto ]

Dimm 1 Clock Skew Control.......................[ Auto ]
Dimm 2 Clock Skew Control.......................[ Auto ]
DDR Write Training..............................[ Auto ]

******Channel B Driving Settings******

Drive Strength Profile..........................[ Auto ]
Data Driving Pull Up Level......................[ Auto ]
cmd Driving Pull Up Level.......................[ Auto ]
ctrl Driving Pull Up Level......................[ Auto ]
clk Driving Pull Up Level.......................[ Auto ]

Data Driving Pull Down Level....................[ Auto ]
cmd Driving Pull Down Level.....................[ Auto ]
ctrl Driving Pull Down Level....................[ Auto ]
clk Driving Pull Down Level.....................[ Auto ]

******Motherboard Voltage Control******

Load-Line Calibration...........................[ Enabled ]
CPU Vcore [ 1.1875 ]...................[ 1.367 ]
CPU Termination [ 1.20 ]...................[ 1.260 ]
CPU PLL [ 1.50 ]...................[ 1.570 ]
CPU Reference [ 0.760 ]...................[ 0.886 ]

MCH Core [ 1.100 ]...................[ 1.460 ]
MCH Reference [ 0.760 ]...................[ 0.901 ]
MCH/DRAM Refernce [ 0.900 ]...................[ Auto ]
ICH I/O [ 1.500 ]...................[ 1.500 ]
ICH Core [ 1.100 ]...................[ 1.200 ]

DRAM Voltage [ 1.800 ]...................[ 2.160 ]
DRAM Termination [ 0.900 ]...................[1.000 ]
Channel A Ref [ 0.900 ]...................[ 1.000 ]
Channel B Ref [ 0.900 ]...................[ 1.000 ]

******Advanced BIOS Features******

Limit CPUID Max to 3............................[ Disabled ]
No-Execute memory Protect.......................[ Disabled ]
CPU Enhance Halt (CIE)..........................[ Disabled ]
C2/C2E State Support............................[ Disabled ]
C4/C4E State Support............................[ Disabled ]
CPU Thermal Monitor.............................[ Disabled ]
CPU EIST Function...............................[ Disabled ]
Virtualization Technology.......................[ Disabled ]

[RAMMAN]

looks like i found my cpus limit, orthos was forced to close a few minutes into orthos at 450x8, luckily i did a sub 13 sec pi 1m time first



looks like im wasting my time trying to push any more until i get the courage to try my dice pot just sitting there on a table. 475fsb is flaky at best, 450fsb seems stable at 1:1 and should be stable at 5:6 too. last night i managed to get 475x7 10 minutes orthos stable but cant stabilize it at higher multies, and thats at 1:1 pl10 1.3 vtt and 1.3mch. incase your wondering why the screenshot only shows 2048mb its because i have gone back to my team xtreem 1300s for now.

[the_real_7]

UGH First day with new G.skills and Im just having a hard time getting them stable at 1200mhz and keeping My proc just 4050 any recommendations guys, Ive tried lots of different settings but none but this one passed intel burn , but this one which is the same as running my old ram at 4 4 4 10 1.1 450 x 9 in bandwidth terms

******Motherboard Intelligent Tweaker (M.I.T.)******

Robust Graphics Booster.........................[ AUTO ]
CPU Clock Ratio.................................[ 9 ]
Fine CPU Clock Ratio............................[ + 0.0 ]
CPU Frequency 4.5GHz............................[ 450 x 9.0]

******Clock Chip Control******

CPU Host Clock Control..........................[ Enabled ]
CPU Host Frequency (Mhz)........................[ 450]
PCI Express Frequency (Mhz).....................[ 100 ]
C.I.A 2.........................................[ Disabled ]

******Advanced Clock Control******

CPU Clock Drive.................................[ 900mv ]
PCI Express Clock Drive.........................[8 00mv ]
CPU Clock Skew..................................[ 0ps ]
MCH Clock Skew..................................[ 50ps ]

******DRAM Performance Control******

Performance Enhance.............................[ STANDARD ]
Extreme Memory Profile (X.M.P)..................[ Auto ]
(G) MCH Frequency Latch.........................[ 400 ]
System Memory Multipler.........................[ 226D ]
Memory Frequency 1066...........................[ 1200 ]
DRAM Timing Selectable..........................[ Manual ]

CAS Latency Time................................[ 5 ]
tRCD............................................[ 5 ]
tRP.............................................[ 5 ]
tRAS............................................[ 15 ]

******Advanced Timing Control******

tRRD[4].........................................[ 4]
tWTR[4].........................................[ 4]
tWR[13].........................................[ 13 ]
tRFC[68] .......................................[ 64 ]
tRTP[4].........................................[ Auto ]
Command Rate (cmd)[0]...........................[ Auto ]

******Channel A Timing Settings******

Static tRead Value [ 9 ] ................[ 9 ]
tRD Phase0 Adjustment [ 0 ] ................[ Auto ]
tRD Phase1 Adjustment [ 0 ] ................[ Auto ]
tRD Phase2 Adjustment [ 0 ] ................[ Auto ]
tRD Phase3 Adjustment [ 0 ] ................[ Auto ]

tRD 2rd (Differnt Rank) [ 8 ] ................[ Auto ]
tWR 2wr (Differnt Rank) [ 8 ] ................[ Auto ]
tWR 2rd (Differnt Rank) [ 7 ] ................[ Auto ]
tRD 2wr (Same/Difft Rank) [ 9 ] ................[ Auto
Dimm 1 Clock Skew Control.......................[ Auto ]
Dimm 2 Clock Skew Control.......................[ Auto ]
DDR Write Training..............................[ Auto ]

******Channel A Driving Settings******

Drive Strength Profile..........................[ Auto ]
Data Driving Pull Up Level......................[ Auto ]
cmd Driving Pull Up Level.......................[ Auto ]
ctrl Driving Pull Up Level......................[ Auto ]
clk Driving Pull Up Level.......................[ Auto ]

Data Driving Pull Down Level....................[ Auto ]
cmd Driving Pull Down Level.....................[ Auto ]
ctrl Driving Pull Down Level....................[ Auto ]
clk Driving Pull Down Level.....................[ Auto ]

******Channel B Timing Settings******

Static tRead Value [ 9 ] ................[ 9 ]
tRD Phase0 Adjustment [ 0 ] ................[ Auto ]
tRD Phase1 Adjustment [ 0 ] ................[ Auto ]
tRD Phase2 Adjustment [ 0 ] ................[ Auto ]
tRD Phase3 Adjustment [ 0 ] ................[ Auto ]

tRD 2rd (Differnt Rank) [ 8 ] ................[ Auto ]
tWR 2wr (Differnt Rank) [ 8 ] ................[ Auto ]
tWR 2rd (Differnt Rank) [ 7 ] ................[ Auto ]
tRD 2wr (Same/Difft Rank) [ 9 ] ................[ Auto ]

Dimm 1 Clock Skew Control.......................[ Auto ]
Dimm 2 Clock Skew Control.......................[ Auto ]
DDR Write Training..............................[ Auto ]

******Channel B Driving Settings******

Drive Strength Profile..........................[ Auto ]
Data Driving Pull Up Level......................[ Auto ]
cmd Driving Pull Up Level.......................[ Auto ]
ctrl Driving Pull Up Level......................[ Auto ]
clk Driving Pull Up Level.......................[ Auto ]

Data Driving Pull Down Level....................[ Auto ]
cmd Driving Pull Down Level.....................[ Auto ]
ctrl Driving Pull Down Level....................[ Auto ]
clk Driving Pull Down Level.....................[ Auto ]

******Motherboard Voltage Control******

Load-Line Calibration...........................[ Enabled ]
CPU Vcore [ 1.1875 ]...................[ 1.367 ]
CPU Termination [ 1.20 ]...................[ 1.260 ]
CPU PLL [ 1.50 ]...................[ 1.570 ]
CPU Reference [ 0.760 ]...................[ 0.836 ]

MCH Core [ 1.100 ]...................[ 1.360 ]
MCH Reference [ 0.760 ]...................[ 0.901 ]
MCH/DRAM Refernce [ 0.900 ]...................[ Auto ]
ICH I/O [ 1.500 ]...................[ 1.500 ]
ICH Core [ 1.100 ]...................[ 1.200 ]

DRAM Voltage [ 1.800 ]...................[ 2.160 ]
DRAM Termination [ 0.900 ]...................[1.050 ]
Channel A Ref [ 0.900 ]...................[ 1.050 ]
Channel B Ref [ 0.900 ]...................[ 1.050 ]

******Advanced BIOS Features******

Limit CPUID Max to 3............................[ Disabled ]
No-Execute memory Protect.......................[ Disabled ]
CPU Enhance Halt (CIE)..........................[ Disabled ]
C2/C2E State Support............................[ Disabled ]
C4/C4E State Support............................[ Disabled ]
CPU Thermal Monitor.............................[ Disabled ]
CPU EIST Function...............................[ Disabled ]
Virtualization Technology.......................[ Disabled ]

[stasio]

New BIOS:
GA-EP45-UD3R - F12
-released 18.Jan 10
http://forums.tweaktown.com/f69/giga...st-bios-28441/

[dustin_ds3000]

i just upgraded my GA-EP45-UD3R BIOS from F8 to F12, doing my 24 hour prime 95 test now with E8500 @ 4GHZ

[the_real_7]

dustin_ds3000 can ya do a latency test , hopefully they didn't make more stable with any timing sacrifices
Also I hopping they fixed this thing with the dual lans knocking out evrytime I turn power off

[Gameman]

looks like im wasting my time trying to push any more until i get the courage to try my dice pot just sitting there on a table. 475fsb is flaky at best, 450fsb seems stable at 1:1 and should be stable at 5:6 too. last night i managed to get 475x7 10 minutes orthos stable but cant stabilize it at higher multies, and thats at 1:1 pl10 1.3 vtt and 1.3mch. incase your wondering why the screenshot only shows 2048mb its because i have gone back to my team xtreem 1300s for now.

you got the Quad Extreme and all you're being allowed is 3600MHZ???
something's up - board sounds like it suffer's from the finicky-ness my last UD3R had - how bout just raising the multiplier really high????
I coulda sworn Extreme's were unlocked....
I would thought you would have been good for at least 4.5Ghz or even 4.7Ghz...

oh well...

edit: oh, sorry, didn't notice it was C0 - disregard
4.0 should be no problem though...

edit:i gotta quick question:
will too much vtt kill the chip like vcore????

Cause I can seem to get 4.2 stable enough for everyday but it appears to correction: 1.64 vtt for the Prime95 Stability Test

thanks

[Gameman]

seems to be stable enough....

am i asking for trouble with the vtt???



thanks

edit: nevermind: think i found the answer here....
http://www.anandtech.com/weblog/showpost.aspx?i=428
oh well 4.2 was nice - but 4.0 is fine...at least it's up to QX9770 stock speed anyway....

thanks

made a quick bios alteration here....
i should think these voltages would be a little more respectable....



edit2:
i dunno after reading this technical note I think 4.0ghz is more than enough considering I'm getting more than QX9770 stock performance here...

Intel® Core™2 Extreme Processor QX9000 Series and Intel® Core™2 Quad Processor Q9000 Series Datasheet (Document Number: 318726-003) was first published in March 2008. Section 2, Electrical Specifications, Subsection 2.6, Voltage and Current Specifications, Table 2-2, titled Absolute Minimum and Maximum Ratings, specifies absolute maximum and minimum ratings for this series of processors. It’s important to note that these values lie outside the functional limits of these processors (i.e. they may not be indicative of warranted operating voltages but are rather intended to serve as warning to those that would run their processors above rated specifications).

Table 2-2 shows maximum voltages for both VTT (FSB Termination Voltage) and VCC (Vcore) with respect to VSS (the processor power ground plane voltage, a.k.a. “ground”). In this case they happen to be equal in magnitude – 1.45V. If anything, this suggests that the use of high VTT voltages can be potentially as damaging, if not more so, than the sustained application of Vcore voltages above this same voltage yet many users continue to operate under the assumption that excessive VTT voltages should be less concerning than higher Vcore voltages.

i dunno, you may disagree, but kinda makes 1.64 vtt seem kinda scary...similar to high pll

[dustin_ds3000]

dustin_ds3000 can ya do a latency test , hopefully they didn't make more stable with any timing sacrifices
Also I hopping they fixed this thing with the dual lans knocking out evrytime I turn power off

here is the latency test

[Gameman]

did manage this though-although it looks like the vtt might be killer...
though not bad for a UD3L i figure....

[vailr]

This P45-UD3R F12 bios seems to be defective, at least on my Windows system.
System would BSOD when booting XP-32 bit (on Intel Raid 0), while Windows 7 64-bit (on a single drive) booted fine.
Even a fresh install of XP 32-bit BSOD'd during installation.
Have now re-flashed back to F11, and all is working again.

[Gameman]

found some Prime-stability at 4.2 ghz, but I had to really jack up the northbridge - jesus



edit:

managed to get the vcore down along with the northbridge a bit and still have some stability - but there doesn't seem to be any way around that vtt issue...

oh well...I guess this is what it takes...