dfi dk p45 t2rs plus

escobar'97 · 29 Oct 2008 at 00:00

Hi there

Slightly noobish question,but just looking for a bit of guidance

currently got this board,and just started to overclock.

Got my q600 sat @ 3.2 ,everything stock volts

Obviously going to push it further,but not sure which is the cpu volts in the bios?

Just swapped from a 965 chipset,and feeling slightly confused about some of these extra settings in this bios

overclock so far is 356x9 =3.2

1.264 core volts (as read in cpuz)

cpu vid special add auto---wtf is this setting ?

cpu vtt 1.20 --is this cpu core volts?

fsb vtt 1.19v

sb core 1.55v

Cheers for any assistance on this matter

Trixxy · 29 Oct 2008 at 00:51

cool, just put a DFI DK P45 T2RS into my system a few mins ago (to replace a 965 chipset mobo which died last week).

Was gonna try overclocking my E6600 tomorrow when I get home, so hopefully this thread will come in handy.

escobar'97 · 29 Oct 2008 at 12:53

Sweet found it

It's the cpu vid special add option

time for some o/cing

Swordfish125 · 29 Oct 2008 at 17:09

Leave CPU VTT alone. Search for Dfi club in google and you will find DFI support forums, with plenty of threads on overclocking them.

Firegod · 29 Oct 2008 at 18:35

escobar'97 said:
Hi there

overclock so far is 356x9 =3.2

1.264 core volts (as read in cpuz)

cpu vid special add auto---wtf is this setting ?

cpu vtt 1.20 --is this cpu core volts?

fsb vtt 1.19v

sb core 1.55v

Cheers for any assistance on this matter

CPUVID Control - CPU Voltage

CPUVID Special Add - Allows you to increase CPU Voltage even more! Say you max out the CPU voltage setting, for example, at 1.5v but you want more. Then this, I think I'm right in saying works as a percentage of that figure. So, for example, 115% of 1.5v will give you 1.725v! And so on.

Then you have your usual DRAM, Northbridge/FSB, Southbridge voltage options.

Then you may have stuff like CPU VTT, CPU GTL REF, etc.

These only come into play if you are overclocking. Basically, the way it works, is that the CPU VTT is a scale. The higher, the higher an FSB can be reached. So when overclocking, a VTT of 1.4v will achieve around about 400-450Mhz FSB. BUT if you increase this figure it's best to manually set the CPU GTL REF value, which represesnts a voltage.

For me, I have CPU VTT set to 1.4v and the GTL set to 90.

So what I'd say is, use the normal CPU voltages, etc. If you find that you just can't overclock anymore, it'll probably be time to increase the VTT setting.

escobar'97 · 30 Oct 2008 at 11:13

Firegod said:
CPUVID Control - CPU Voltage

CPUVID Special Add - Allows you to increase CPU Voltage even more! Say you max out the CPU voltage setting, for example, at 1.5v but you want more. Then this, I think I'm right in saying works as a percentage of that figure. So, for example, 115% of 1.5v will give you 1.725v! And so on.

Then you have your usual DRAM, Northbridge/FSB, Southbridge voltage options.

Then you may have stuff like CPU VTT, CPU GTL REF, etc.

These only come into play if you are overclocking. Basically, the way it works, is that the CPU VTT is a scale. The higher, the higher an FSB can be reached. So when overclocking, a VTT of 1.4v will achieve around about 400-450Mhz FSB. BUT if you increase this figure it's best to manually set the CPU GTL REF value, which represesnts a voltage.

For me, I have CPU VTT set to 1.4v and the GTL set to 90.

So what I'd say is, use the normal CPU voltages, etc. If you find that you just can't overclock anymore, it'll probably be time to increase the VTT setting.

Nice explanation cheers

Think my bios maybe a little differant from your p35 board in your sig?

There's no cpuvid control just the cpu vid special add?---Wierd?

still at 3.2ghz,not tried to go any further atm

Got a wierd problem.Only seems to be happening randomly though?

basically as you turn the pc on,the led bios poster thingy does it's thing

gets stuck at 26,resets three times like it's stuck in a loop and then a code

8.8 or 88 stays on the led poster and wont come on?

once you turn the pc off by the power supply and reboot it posts like normal.

I put the cpu volts up to 1.312(in cpuz) using the cpuvid special add yesterday

Last night this happened again,but this morning it posted like normal?

It also only happens when you first turn the pc on,not when you restart

escobar'97 · 30 Oct 2008 at 12:59

Just a little bit more info on bios settings if that can help with stability

Cpu vid special add +87.5mv (cpu now at 1.344v-see if that helps)

dram 1.9v (set ram at 1-1 with cpu.Running at 4 4 4 12.)

SB core/CPU pll volts 1.55v -untouched

NB core-1.18-untouched

cpu vtt-1.21 -untouched

VDROOP-enabled

Clockgenvolts-3.45v-untouched

CPU gtl 0/2 ref volt-0.67x

Cpu gtl 1/3 ref volt-0.67x
Nb gtl ref volt-0.67x

fsb verf-auto

Also I noticed the pcie clock set to 100.Is this ok or should it be setto 101?

Temps 25c idle cpu- system 26c--chipset 32c

Cheers in advance

Firegod · 30 Oct 2008 at 18:00

Hi mate

Looking at your setup, I think VDROOP needs to be disabled.

Swordfish125 · 30 Oct 2008 at 18:15

I have a DK board, you cannot alter CPU VCORE with a DK, it is a Bios limitation, on the next model up VCORE is changable.

That said with special add you can easily up the volts. It works by adding mV, normally in 25mv stages.

The VDROOP is to option is to help stop VDROOP?

88 on DFI means a fatal error. Reset you bios by clearing the CMOS using the jumpers (its in the manual). Start from fresh.

What memory are you using? For my system I had to manually input all of my RAM timing and volts (mine run at 2.2v) to get my 1066mhz sticks stable. I would get your System set up at stock CPU and memory speeds First and then save the settings.

Try boosting the NB a couple of notches. Also check the CPU voltage under load as it will drop.

Firegod · 30 Oct 2008 at 18:50

VDROOP, as far as I know, lowers the Voltage into the CPU to keep it at "acceptable" levels. Which is obviously... bad for overclocking.

So should be disabled as you want it to be what you set, is what you get.

Swordfish125 · 30 Oct 2008 at 19:02

in mine its called VDROOP control, and helps to stop Vdroop:

http://csd.dficlub.org/forum/showthread.php?t=7645

From DFI support forums.

escobar'97 · 31 Oct 2008 at 12:45

Cheers for all the above help/advice

Hopefully when I get some time this weekend (when i'm not working

) I'll try overclocking again

Swordfish125-cmos clear worked a treat.No more 88 "fatal error"

You bobbed me up telling that lol

As for my Ram it's 4 gig of geil black dragon 6400 stuff (4-4-4-12)

hoping to achive 3.6 o/c on this board,stable 24/7

Jimbo Mahoney · 31 Oct 2008 at 13:18

Better information on Vdroop here:

http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3184&p=5

Summary: vDroop is by design and aims to stop temporary spikes in voltage.

Disabling it theoretically exposes your CPU to larger swings in voltage and could damage it / shorten its life.

In reality, I'm not sure of how many people have had CPUs die because of disabling vDroop.

Swordfish125 · 31 Oct 2008 at 18:35

escobar'97 said:
Cheers for all the above help/advice

Hopefully when I get some time this weekend (when i'm not working ) I'll try overclocking again

Swordfish125-cmos clear worked a treat.No more 88 "fatal error"

You bobbed me up telling that lol

As for my Ram it's 4 gig of geil black dragon 6400 stuff (4-4-4-12)

hoping to achive 3.6 o/c on this board,stable 24/7

Check the giel website for specs and input them all, timings, voltage are the important ones

Jimbo Mahoney said:
Better information on Vdroop here:

http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3184&p=5

Summary: vDroop is by design and aims to stop temporary spikes in voltage.

Disabling it theoretically exposes your CPU to larger swings in voltage and could damage it / shorten its life.

In reality, I'm not sure of how many people have had CPUs die because of disabling vDroop.

It prob dont matter if you turn it off or on then? thanks for linking that tho, it made me understand VID settings.