sven007

Reading this with interest as I've recently bought a P35-DS3P + E6750 and intend overclocking this to around 3.2Ghz (400 x 8).
@PangingJr, you've obviously got quite a bit of experience with these series of boards, just wondered if you've seen a discrepancy between the CPU voltage that's set in the bios (CPU voltage control) and that reported by Speedfan or Core Temp or similar program, 'cos when I set it manually to 1.35?V, it's reported as 1.31 in the above progs and that's with no load.
Cheers.

PangingJr

i don't know about speedfan i've not used it for my board (P35-DS4),
the core temp program do not report CPU core voltage or Vcore, it reports CPU VID value only (this value can also be seen in BIOS at the "Normal CPU Vcore [ ? ]", and the value cannot be changed).

for my board the CPU core value different between BIOS-set value and the value reported by Everest or EasyTurn5 Pro in Windows... 0.020 - 0.035
for example, BIOS-set value 1.275, in Windows 1.25,1.24.... BIOS-set value 1.44, in Windows 1.42.

and i've been using the latest BIOS for a few days, and i find there is almost no different with both value.

note--

as for the BIOS-set value 1.275, in Windows 1.25,1.24...
it's actually 1.25V in Windows when the CPU is running at 2667 MHz and this when the BIOS-set value = Normal,
the value in Windows will be like 1.01V.... 1.09V...... 1.25V

and for the BIOS-set value = Normal (at the CPU core voltage), this can be used to overclock my E6750 from the stock clock to 3200MHz and stable.

ChaosMinionX

Im an Asus/DFI/Intel board fanboy I should really check out some other brands haha

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PangingJr

i can't edit the above post.

here's some more info to add to it...

for my E6750 (CPU Vid 1.275V) @ 3200MHz

voltage is set as follow:

System Voltage Control = Manual
DDR2 OverVoltage Control = ? depending on you DRAM timing settings and the memory frequency that you will use on the system.
PCI-E OverVoltage Control = Normal
FSB OverVoltage Control = Normal
(G)MCH OverVoltage Control = Normal
CPU OverVoltage Control = Normal
Normal CPU Vcore = ? <== CPU Vid.

the E6750 will be running like... from 2400MHz to 3200MHz (6x - 8x 400MHz at 1.01V to 1.26V now with the latest Beta BIOS F8f, was 1.25V with BIOS F7),
it's the same CPU core voltage that is in use to operate the E6750 at stock clock... which is from 2000MHz to 2667MHz (6x - 8x 333MHz).

PangingJr

if your memory can run at DDR2-1000 CAS4-4-4-12 set the BIOS for the "System Memory Multiplier" = 2.50x (2.50x 400MHz = DDR2 1000MHz) which is FSB/DRAM 4:5...

it's the best DRAM and memory freq setting, best system performance when you are having the E6750 at 400x8 on this Gigabyte board (your board should be the same),
you are able to boot and run Windows with the PL5 setting (tRD or static tREAD value = 5 in BIOS)...
and this is the best low overclock (low voltages use, low system/CPU temps) with the E6750 and with this board.

here you can see some info... the system CPU running at from 2400MHz to 3200MHz... the CPU core voltage will also be switched up and down..



note--

do not use the EasyTurn5 or EasyTurn5 Pro to overclock in Windows.
overclock your system in BIOS only.

PangingJr

you don't seem like a person who will like to use Gigabyte board. somehow, i think you won't like it at all if you decide to try one.

ChaosMinionX

How come

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PangingJr

that's my predictions, based on past evidence, you like Asus's, and all the best there is in a hardware, Gigabyte's board is not the best out there.
and its name has never been your first choice, never cross your mind long enough for you to decide and already have bought one. you will give up on it when any problem occur. you should have not bought it in the first place? so if you buy one and try it out, you will help me prove that to be correct or not.

ChaosMinionX

I suppose you would be right, I generally try to stay towards the best of the best..... Gigabytes I have seen are nice boards though

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PangingJr

you will never like Gigabyte, i've been seeing from time to time at some certain forums on the internet that some have quite a hard time getting their processors and memory overclocked with Gigabyte's P965, P35, X38 and want to give it up and buy Asus, some said they should have gone for Asus's, lol, don't waste you money with it you'll give it up in a few days.

zaim

thanks guys =)

i wanna try maximize full performance!

i got my system running at 3.6ghz atm..

12 x 300fsb
1:2 with ram so ram is at 1200mhz 5-5-5
fsb running at 1200mhz

but ill lower the ram to 2.5 and lower the multi and work the fsb!

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PangingJr

depending on the FSB zaim, since your memory module can run at a high speed you can always try 3.0x when your FSB is low and you use high CPU multi.
but in most cases, you won't need anything but 4:5 (2.50x), your system won't need more real memory bandwidth. this excepts your are going to use a very high FSB and your memory can't handle running 4:5, try 5:6 (2.40x) and 1:1 (2.0x) with low DRAM timings.

you can see this... compares to the 4:5 above.



another low overclock and memory multi...
on 333x? , try memory 3.33x and set the performance enhance to Extreme, CAS4, tRD=4 and your memory speed will be at DDR2-1110, this is another low overclock, which gives a good system performance, this also good for running a Core 2's at sock FSB or when oveclocked 266 to 333MHz.

PangingJr

and here is how you can first start playing with the timings using Memset in Windows, and then take all of the values to BIOS-set.

(i hope i didn't miss any value and got it all right)...


the everest also gives you a very good info about your memory timing settings, except the everest cannot be used to chang timings in a real-time, and it seems to always get the "tRTP" value wrong and seems to have 2 above the BIOS-set value.

a few things you should know when playing with Memset in Windows...

the results of using it, i have killed my RAID on the fly once, so always back up your files/data first.
and you may want to add a few more DDR2 voltage in BIOS first, and then check your DDR2 voltage with the timings sets at your next boot using memtest86+ and to verify the DDR2 voltage setting again.

sven007

Thanks for your help and info PangingJr. I've got it stable @ 400 FSB with Cpu Voltage Control = Normal as you've suggested, although I had to disable CPU C1E, CPU EIST, & CPU TM2 as you suggested earlier in this thread. Just wondered how you get 2400 - 3200MHz (6x - 8x 400MHz) with these features disabled, since mine is 8 x 400 = 3200MHz all the time now, or do you not need to disable them all ?. BTW, my Corsair XMS2 memory is rated 4-4-4-12, 800Mhz @2.1V. It may run faster with slacker timings, but I haven't tried yet.
Also, you mention bios F8f beta, when all I see for your board (DS4) on Gigabytes website is F7. Latest for my board is F6. Where did you get tht bios ?
Cheers.

PangingJr

"although I had to disable CPU C1E, CPU EIST, & CPU TM2 as you suggested earlier in this thread. Just wondered how you get 2400 - 3200MHz (6x - 8x 400MHz) with these features disabled, since mine is 8 x 400 = 3200MHz all the time now, or do you not need to disable them all ?."

it's also related to operating system, try enabling those CPU features in BIOS and see if you will be able to get 2400 - 3200MHz (6x - 8x 400MHz) including the core voltage that should drop to lower levels. otherwise, disabled the C1E, EIST features and your system CPU may need to run at 3200MHz at all time.
in all cases, test stability of your system again.


"BTW, my Corsair XMS2 memory is rated 4-4-4-12, 800Mhz @2.1V. It may run faster with slacker timings, but I haven't tried yet."

set memory multi to 2.0x, the performance enhance to Turbo, DRAM timing to 4-4-4-12 with the rest to Auto, and DDR2 voltage to +0.3, which is 2.1V at its rated.
and then boot into Windows, and run the Memset program, and show me, i would like to see the stock DRAM subtimings.
you probably won't need to change them, or otherwise you may need to add more volts to the system.

also, if you don't know how to overclock memory, and/or with a wrong move, you can damage your memory modules...
otherwise, set memory multi to 2.50x, the performance enhance to Turbo, DRAM timing to 5-5-5-15 with the rest to Auto, and DDR2 voltage to 2.1V (may need to add more volts to it).
the clock speed is overclocked to 1000MHz, run memtest86+ right away, Test #8 for 5 passes, and then 15 passes of the Test #5, this takes about 30 miniutes to finish.
if all seems okay, then boot into Windows, and see if you like this settings more. if you don't see any gain from using this setting, go back to the 4-4-4-12 settings.

=====================

as about BETA BIOS's for yours...

i hardly want to encourage you to go for BETA BIOS's.
i'm a dangerous and adventurous man when comes to my own computer system, so whether or not you can take the consequence if there is any,
you decide.

the latest version of BIOS beta for yours has been out also... Station-Drivers: le site de drivers, bios, firmwares, ect... ( site has some ads )

anyways, i like to suggest you to use the BIOS built-in's Q-Flash programming utility to reflash your BIOS, and not to reflash by using the tool that Gigabyte made for Windows, the @BIOS.
you can place the BIOS file in a USB drive or a diskette, boot into the Q-Flash program, once it's done, select the command from the utility to power-off or reset the system,
and don't forget to enter BIOS setup again and to Load Optimized... save and exit the settings to restart once, then start re-set all the BIOS settings to your prefered values and system configuration.

and, in all cases, before you reflash BIOS enter BIOS setup and Load Optimized and save/exit to restart once and first, then after you have done that, boot into the Q-Flash program to reflash the BIOS.


anyways, i got my E6750 to 4.0Ghz in a few hours after i have it setup on the board, my memory modules to DDR2-1270MHz in the next hour or so,
and within a week or so i know all of the hardwares (and its limit) that i want to use to build a system. and every BETA BIOS counts, because my board is very new at the time.

i've played very hard with the available hardwares and operating system for a whole month and more when i have time, and usually, i know my hardwares soon enough, lol, if anything goes wrong, i just replaced it and try again.

it's important to know your hardwares, especially, you're going to overclocing them and also to use them as overclocked.
you may do things differently and with your ways during you test your hardware, but i like to encourage you to try to know your hardwares as much as you can.