Requirement : I wish to oc my proccy to something around 2.4 to 2.6 ghz on stock hsf.
Here is some information abt the system :
The bios has provision for automatic oc but that doesn’t always work. When it doesn’t work I get this screen. I then press F1 to load @ default settings.
The motherboard provides the following options for OCing:
How do i begin to OC manually… please baby-walk me. I will post results/screenshots of any info required.
I’m not much into gaming and want to oc just for the sake of learning. Whatever OC I do will help me in crunching better
U need to know optimum vCore for UR overclock, slightly bump the FSB on stock CPU vCore, save and exit BIOS, run stress tool like Orthos, if its stable reboot and again increase FSB, again test, if failed then bump the vCore slightly, nothing alarming upto 1.385 on stock cooler. Actually no harm if U have good temps upto any vCore, download tool like Core Temp to measure actual core temps.
U need to know best optimum RAM timings and voltages, If U overclocked CPU to 2.66GHz, which means 266MHz FSB, FSB is quad pumped ie. 266X4 = 1333MHz, FSB X Multi = Clock speed. E4400 multi is 10. Earlier we selected DRAM FSB ratio 1:1, so RAM will also run @ 266MHz (533MHz DDR2), RAM running on lower speed than default, U can tight the timings to compensate the loss, set 4-4-4-12 2T @ default voltage. Run Memtest 86+ to test memory stability.
Search forums, try to find most overclock friendly BIOS for UR mobo, Biostar TP35D2-A7 doesnt offer all settings, maybe Rebelsheaven modded BIOS can help U.
I think I have covered everything, wait for others to reply, U can achieve 3GHz with ease. I hope it helps. BTW nice config.
For the last few days my system is running at 2.66 GHz. However, there is a small problem :
When I boot my pc, the bios says : system resets due to overclock, please setup cpu clock in bios setup.
If I press f1, it continues to boot at stock settings. But on experimenting I have found that If I Reboot the pc by pressing the power switch, and keep doing this every time the above bios error is displayes, then after 5-10 attempts the pc does indeed boot perfectly at the overclocked settings. And it continues to run perfectly without any glitch.
In order to troubleshoot, I tried to increase voltages in the mobo bios but no joy
If I do not oc, the pc boots perfectly in the first attempt.
So, I have to reset the pc a few times whenever I want to run it oc’ed.
…i knw very lil / rather nothing abt overclocking , but in ur case i sence that ur bios jus might need a ‘‘upgrade’’ ,rather a push to the higher version …pls check that out and flash it up.
i also get the sometimes…must be some sort of safety feature or sumthing…
u can flash your bios easily now coz biostar has a windows based bios-flash tool on its website which can take the file from the hard-drive directly…so no more floppys
i am running the lastest version of rebelshaven mod bios
DRAM : 5-5-5-18 - auto
Temps : idle 24, on load 54 (orthos)
SuperPI : 21s
I sold my kingston 667 ram and got Trans 800 thinking it might help… still no joy. I just want to cross 3ghz for the sake of testing only but the darned thing won’t post
Yes, agreed its enuff bro, but the thing is I want to get TRUE120/Ultima soon but what use would it be if the pc refuses to POST at anything higher than 272 GHz :crash:
Would appreciate some help. What can be holding it back ?
in the pic you posted…i can see several things that r wrong
first off all, reduce the ram multiplier to 1:1 , i.e. run it at 200mhz
other than that, set the fsb and gmch voltage to auto(which will give it the max possible of 1.60volts)
now increase the fsb and if u get instability, then increase the cpu vcore…
dont go much over 1.4volts though
once you find a stable setting that you like, reduce the fsb termination and gmch voltages and see if its stable
^^a general rule of OC is to give more volts for stability and then decrease it till you find the minimum stable voltages…but i dont suggest to do it with your proccy coz the board gives it 1.48volts(i tried meself )
and your ram can do much more than 850 so it may hold you back
when u OC, try to OC 1 component at a time and find individual limits, after which u try to get the best combination
what u r trying to do is OC the proccy and RAM together which wont let you determine the cause of instability
Lol you always come to my rescue and I really appreciate that. I’d def rep again after spreading
From 2.66 stable, I again tried to go for 2.77…
er… do you mean setting to memory 1T command :ashamed:
am not sure so set it to Auto
and since the system auto increases memory frequency acc ording to cpu fsb so i decided to feed more juice by setting memory voltage to 2.2.
Done
I set the fsb to 277
then i gradually increased the voltage upto +0.137v but no joy. (1.3125 + 0.137 = 1.4495) It was exceeding 1.4v so I didn’t try beyond this.
pc double boots and bios says system reset due to oc
It automatically increases according to cpu fsb. What change do I make so that ram is left alone and only cpu is overclocked
in the system memory frequency option, select the lowest speed, i.e. 400mhz
that will result in a speed of 533mhz for your ram
you could select 533mhz also(u get this option in the rebelshaven bois only)
that would make your ram speed :: (277*4/3)*2=738mhz
^^the 533mhz option is hidden but the guy on rebelshaven unlocks it
with these 2 options, your ram is running under its spec of 800mhz so you dont need to be worried about any ram parameters and can run it at its lowest voltage (2.00volts which is actually 1.96 )
and increase the fsb in steps of 5mhz…dont make big jumps so that you can guage where to stop
Was free today so decided to fiddle around a bit. Following the above advice of setting memory clock to 400, I was able to boot into XP @ 3.25 GHz.
I did the following :
Flashed to latest Rebel Shaven bios
Now I get “533” as an option for memory frequency, but found that my pc boots only when I set it to 400. Somehow 533/667 etc don’t work for me.
Having pumped loads of volts, I was able to boot at 3.25 ghz. SuperPI 1M = 17 sec. But load temps were quite high so stepped down.
(Q 1 : How far can I pump the cpu volts ? Is there any voltage limit that I should never cross.)
Found that WinXP runs stable at 3.0 GHz (with all voltages at their minimum settings). SuperPI takes 19secs, idle temps are (cpu 15, both cores 24) and onload (cpu 54, both cores 59).
(Q 2 : I try not to let my cpu temps cross 55. What is the similar limit for core temps ?)
Running at 3.0 GHz, I set the boinc to use 90% cpu and left it crunching for a few hours and the temps were always in the range of : cpu 31-36, both cores 44-46. Temps never crossed the upper range.
Went back to bios and set the ram timings to 4-4-4-12
(Q 3 : My trans 800 ram’s timings are 5-5-5-18 but I’m running it at 4-4-4-12. Seems to work fine. Hope its okay.)
note to self : time to get a cpu cooler
note to self 2: go out and learn more about memory clocks and timings etc.
Ans 1 : 1.6v max with good air cooler like Ultima 90i, TRUE or TT120 (Just to know limits of CPU and 2mins benchmark like Super Pi), for 24/7 1.5v in BIOS is max reccommended.
Ans 2 : Upto 65C max under load is safe
Ans 3 : Run memtest86+ and check for errors when OCed.
That was the first thing I tried after flashing bios, but as i said above, system does not boot at anything above 400
Will experiment more when free and see how it goes.
regarding temps :
Was using coretemp 0.95 so far. Latest I found is 0.96.1 which shows similar temps.
These temps are taken 10 mins after booting, with boink set to use 90% of cpu.
Here’s a bit older screenshot showing both idle and load temps with cpu running at 3.0 Ghz.
We can see there’s a difference between CPU and core temps.
Do let me know if anything is wrong.
bios
