Hardware > Overclocking! Tips, Help and Advice

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#880894 by CusmaR (Power User) at 2008-01-09 00:23:14 (5 years ago) - [Report]

Xi0nic wrote:

CusmaR wrote:

ive got a Q6600 cpu, im just wondering how high i can push it with stock cooling?

Depends on the chip, but probably 3 ghz to 3.2 ghz.

damn that was fast answered

thanks! maybe i should try to overklock it a bit.

according to core temp it is idle on 39c, is that much? (stock clock)

Last edited by CusmaR at 2008-01-09 00:23:56

#880905 by Xi0nic Donor

(Power User) at 2008-01-09 00:52:27 (5 years ago) - [Report]

hmhef wrote:

why is ur ram multiplier is 5:6 ??
set ur ram multiplier to the lowest 2.0 or 1:1 this should give u some extra cpu speed

360 / 300 = 1.2
6 / 5 = 1.2

1:1 would be 300 / 300, which would be underclocking his memory.

Quote:

according to core temp it is idle on 39c, is that much? (stock clock)

Nope, that's fine.
Is it a G0?

Last edited by Xi0nic at 2008-01-09 00:54:59

#881040 by CusmaR (Power User) at 2008-01-09 09:32:14 (5 years ago) - [Report]

Xi0nic wrote:

Quote:

according to core temp it is idle on 39c, is that much? (stock clock)

Nope, that's fine.
Is it a G0?

Ok, nice

Yes, its a g0

#883061 by Xi0nic Donor

(Power User) at 2008-01-12 19:50:10 (5 years ago) - [Report]

CoreTemp 0.96 is finally showing 100 TJunction on my E2160.
Idle was increased by 15C and is now showing 44C idle @ 9x333 1.325v (Vcore in bios)

Load in Prime95 varied from 60C to 65C after 15 minutes of running.

So yeah the ~30C idle temps it was showing before were wrong.

Last edited by Xi0nic at 2008-01-12 20:07:25

#884105 by CusmaR (Power User) at 2008-01-14 18:43:11 (5 years ago) - [Report]

Okay so ive decided to clock my Q6600 (G0) a bit, maybe about 3.0ghz almost (or as far as the stock cooler can carry me).
I have never done this before, but i have read about it and im familliar with the different terms (such as FSB, etc)

All i need is a "simple" guide to this.
First off, this are my specs:

CPU: Intel Quad Core (Q6600 @ 2.4ghz, stepping: G0)
Motherboard: Gigabyte GA-P35-DS4, P35
Memory: Corsair XMS2-6400 TWIN2X2048-6400C4 4-4-4-12 800mhz
GFX: Leadtek Nvidia 8800GT 512mb

Bios version: F5

Now to the steps i have to take.

1: do i have to update the bios? The one i have is kinda old.
1b: Do i have to uninstall stuff like rivatuner etc to install a new bios? (read this somewhere)

2: Once in the Bios i will disable the things i dont need (read about speedstep, and some more stuff in demagh's guide and others).

3: I will increase the FSB with "small" amounts, and when in windows use prime to stress the cores.
3b: when im done i will increase the FSB some more, then do step 3 over again.

I guess this part is okay?

Then comes the part(s) i know nothing about.
When will i know that i have to increase the voltage to the CPU?
How do i know what to set my memory timings to?
Do i need to add extra voltage to the memories?
What ratio (1:1, 2:3, etc) should i run the memories in?
And how do i get the FSB to match my memories so they will run in 800mhz? (only read about this, but i thought it was hard to understand how they depend on eachother)

Thanks for your help, i know that most of the questions maybe are answered. But i would like to get an answer on my computer parts (since i had a hard time understanding)

#884122 by unknown[58044] at 2008-01-14 19:31:57 (5 years ago) - [Report]

1) Yes, update the bios(from boot not Windows) and uninstall all the software OC Utilities.
2)Yes, you disable these. And the fix tje PCI, PCI-E frequencies etc... and disable the things you think you wont need.
3) Yes, but well you dont need to increase in small ammouns from the start. I think the Q6600 max. multiplier is 10 so pump it up to 300-310Mhz right from the start and set Vcore to 1.35 (Max by Intel but still toooo low

) . Check the idle temps in BIOS if they are <45C then restart in Windows and fire an Orthos sress test, if load temps go straight over 65C+ (CoreTemp) lower the vCore with 0.025-0.05 if not wait 8hr and if you dont get error or temps get to high stick with it.

If lowering the Vcore (to decrease temps) doesnt imporove the stabilty then you processor needs more vCore to run at this FSB stable. Means you need better cooling then the stock fan for higher VCores else it gets too hot. But almost all Qs can do 3Ghz atleast with 1.35 question is if its too hot with the stock fan. All that presumes that you run at 1:1 FSB:RAM ratio.

When will i know that i have to increase the voltage to the CPU?
-When the load temps are not very high but the OC is not stable.

How do i know what to set my memory timings to?
Your memory tiimins are 4-4-4-12 which means CAS(or TCL)(4) - Trcd(4) - Trp(4) - Tras(12)
TCL = CAS Latency Time, Trcd = DRAM RAS# to CAS# Delay , Trp = DRAM RAS# Precharge , Tras = Precharge delay . Look for these settings in BIOS. Set them manually dont leave them at auto.

Do i need to add extra voltage to the memories?
Usually when you want to run your memory at higher Mhz then rated (>400Mhz in Your Case) you would need to increase the vDIMM voltage abit (ex. 0.1-0.2) above the "stock voltage" (marked on the sticks or google). How much voltage depends on how much you want to OC your sticks and how good your sticks are (what chips they are using).

What ratio (1:1, 2:3, etc) should i run the memories in?
-Best is 1:1. You can achive better OC with async. timings too(!=1:1).

And how do i get the FSB to match my memories so they will run in 800mhz?
-If you want to run at 1:1 ratio and lets say you OCed the CPU to 300FSB , your timings will run at 300Mhz which is 100Mhz under the rated speed. To correct that you should increase the CPU FSB to 400Mhz. If you run with the default multiplier of 10 this will means running your CPU at 4Ghz which you cant do with stock cooler so you will have to either

1) Lower the multiplaier from 10 to 7 which means that you will have to run your CPU and Memory at 430Mhz for 1:1 ratio.
Means you will have to OC your memory abit and possibly need to apply more voltage to the Northbridge (vMCH +0.1). But that depends on the how good your mobo is , the top mobos can do 450-500Mhz pretty much out of the box without the need to increase the MCH voltage.

2)run at x8 multiplier at 375Mhz CPU/Memory for 1:1
Memory will run abit lower then the rated speed but you wont need to OC it or the MCH. And that possibly elmininates the following problem:

CPU FSB wall : The maximum FSB the CPU can run at (varies from chip to chip) no matter on what multiplier or Voltage.

You can still set your memory to run at 400Mhz but you will need to run in async. mode in that case.

#884136 by CusmaR (Power User) at 2008-01-14 19:50:04 (5 years ago) - [Report]

Really nice answer, just what i wanted to hear.
Now i got some more questions hehe

1: my Q6600 @ stock cooling is idle on 40-42degrees c. (760rpm according to everest)
2: i tried a prime95 test on all 4 cores and my temp went up to 61-63degrees (fan 1400rpm according to everest)

since you said it "shouldnt" go over 65degrees im feeling a bit insecure about it when its almost there with stock. Is the cooler not on properly?

thanks for the really great answer!

Last edited by CusmaR at 2008-01-14 19:59:51

#884145 by unknown[58044] at 2008-01-14 20:05:47 (5 years ago) - [Report]

No problem mate. 63C on load on what CPU FSB ?

Well these chips can run alot hotter like 80C, its not like your CPU will fburn out if it reaches 70C or so. It just not good to reach such temps for 24/7. Some people run their CPUs at 50C Idle / 70C load which will make the CPU last less and increase abit the danger if potential failure. But these people know what they do + they have $$$ to replace it if shit happens and dotn really care

. So for you 65C or around is the temp you should not cross after 8hrs stress test. If its 61C after 5min load its good, prolly it will increase with 4-5C in 8hrs. If you like the speed you have set you can try stressing it for 40min and if no errors and temps ok you can start lowering the vcore abit and sress-testing untill you find out the min. vcore your CPU need to run stable at that FSB. Or increase the FSB with 5 and test again if its stable or not getting too hot maybe your CPU can run stable on higher FSB with the current voltage

That vcore pretty much seems the right spot for your CPU with your stock cooling pretty much on the temp. edge.

Ohhh and better disable that automatic fan control, the fan should run non-stop at max RPM. Unless your fan is too noisy. Now is winter and in summer your idle/load temps will get hotter.

#884148 by CusmaR (Power User) at 2008-01-14 20:08:59 (5 years ago) - [Report]

well my cpu is still on 2.4ghz, therefore i became abit worried about the temps.

#884150 by unknown[58044] at 2008-01-14 20:12:02 (5 years ago) - [Report]

Check the voltage in everest (Computer-> Sensor i think) when on 100% load.

OK, disable oll OC proggies setup your BIOS correctly and pump the voltage to 1.3 and FSB to 280(2.8Ghz). If it still very hot and your room temp is not 30C then:

1) You had a bad mount (need to remount)
2) Your CPU is concave (i doubt)

And i would use some cood thermal paste , the preapplied one is shit

Arctic Silver 5 is good if you can find it.

Yes if you want to remount you would need to reapply new paste.

#884151 by CusmaR (Power User) at 2008-01-14 20:15:56 (5 years ago) - [Report]

cpu core: 1.20v

if i remount (the cooler has been on for like a month) i need new thermalpaste?
thanks for your help

Last edited by CusmaR at 2008-01-14 20:27:27

#884184 by Xi0nic Donor

(Power User) at 2008-01-14 21:14:59 (5 years ago) - [Report]

What are you using to check your temps?
CoreTemp 0.96 is probably the best...

Also you don't need to update your bios to OC.
If everything on your rig is working fine, then don't flash it. Especially if you don't know what you're doing... You could fuck your board. It's a notorious problem with ASUS boards specifically... Gigabyte might be better about handling bios updates.

Your G0 should reach 3 GHz without upping your vcore.
I recommend you don't use auto. Try one setting above 1.250v manually, I think the number is 1.262 or something similar. Something around 1.250v should work fine, but probably less. You can also check CoreTemp for your VID, then manually set that as vcore in your bios. It should reach 3 GHz on your VID, but it'll probably vary based on the chip.

Put it to 3 GHz with a manual vcore, then run Prime95 for about 20 to 30 minutes and check your peak load temps. It should be similar to what you're getting now... When I OC'd my Q6600 from stock to 3 GHz I didn't see any load difference... Idle went up a few degrees though... Also do make sure the fan is running 100% at all times. If the temps are fine, then you'll need to run Prime95 for 24 hours straight to make sure it's stable.

If you used the stock cooler right out of the box, you should take it off and put some better paste on there.

Quote:

cpu core: 1.20v

Is that your bios or cpuz ?

Last edited by Xi0nic at 2008-01-14 21:25:44

#884195 by CusmaR (Power User) at 2008-01-14 21:31:41 (5 years ago) - [Report]

Xi0nic wrote:

Your G0 should reach 3 GHz without upping your vcore.
I recommend you don't use auto. Try one setting above 1.250v manually, I think the number is 1.262 or something similar. Something around 1.250v should work fine, but probably less. You can also check CoreTemp for your VID, then manually set that as vcore in your bios. It should reach 3 GHz on your VID, but it'll probably vary based on the chip.

Put it to 3 GHz with a manual vcore, then run Prime95 for about 20 to 30 minutes and check your peak load temps. It should be similar to what you're getting now... When I OC'd my Q6600 from stock to 3 GHz I didn't see any load difference... Idle went up a few degrees though... Also do make sure the fan is running 100% at all times.

If you used the stock cooler right out of the box, you should take it off and put some better paste on there.

Quote:

cpu core: 1.20v

Is that your bios or cpuz ?

thats from Everest i got that CPU-core voltage. (havent checked bios, coretemp vid 1.2500v)

Hehe ok, maybe i will wait with the bios update. (i got F5 and F11 is out now, so its feeling a bit old)
Im using CoreTemp 0.95.4 to check my temps.

I looked at the VID in CoreTemp now and that one says: 1.2500v

What do you mean "make sure the fan is running on 100% all the time"?
the cpu fan?
right now i havnt changed anything, its increasing/decreasing speed when the temp goes up/down.
Where do i set it to 100%?

Yes i use the stock thermal paste, how much better will it get if i buy artic silver 5?

thanks!

Edit

I have now overclocked a bit, i started at 300fsb*9 = 2700mhz.
it worked great, had no problems at all with prime95 on for like 20min. The idle temp was like 45c (stock 41) and in load the temp went all the way to 67c.

I made a new attempt at 334*9 = 3006mhz.
This also worked fine, temp was like 47c (stock 41) and with load the temp was 69c (sometimes peaking 70c some seconds) and it worked fine with prime95 also for 10mins.

So all i want to say is thanks for your help, i now need to buy a new cooler for my cpu because this was alot of fun! and please feel free to answer the questions above and below hehe.

How do i get the memory to run in 800mhz?
do i have to match the fsb as good as i can to achive 800mhz with some ratio?

Last edited by CusmaR at 2008-01-15 21:58:22

#884938 by Xi0nic Donor

(Power User) at 2008-01-16 02:13:17 (5 years ago) - [Report]

For 3 ghz I usually use 9*333 since 333x2 = 667 which is a memory speed.

I just feel more "comfortable" with 333... Probably just superstition.

The same reason I'm using 8x400 now.
1600fsb plus 800mhz is also a memory speed. Can run my DDR2-800 at stock speeds with 1:1... Not that 1:1 helps C2D that much, if at all...

Also you might have to unlink your memory in the bios.
Check the Memory tab in CPUZ to see what speeds your memory is at.

You can manually set the memory speed and timings in bios.
I'm not too familiar with the Gigabyte boards, but this is where you might look:

Someone with a Gigabyte board probably knows how to tweak that.
I'm guessing the memory multiplier multiplies itself by your FSB (CPU Host Frequency) to form memory speeds.

For example, at 9x333 with a 2x memory multiplier, your memory will run at 667 MHz.
I have the same memory as you, so it should say "800" in the memory frequency. CPUZ will show "400" for your memory frequency (It's DDR so double that to form "800 mhz" ).

You can also edit the timings towards the bottom of that pic, where it shows "Auto 5 5 15".
Your memory's stock speeds are 4-4-4-12, but you can run them at 5-5-5-15 for only a small performance loss. I had to turn mine down to 5-5-5-15 to get my overclock stable.

When you're all done, always run Prime95 for 24 hours!
It'll stress test your cpu/mem and find any stability problems. If it runs stable for 24 hours (no errors), then you can be 100% sure your OC is stable.
If you change anything in the bios, run it again.

Also have you tweaked vcore at all?
When you get the cpu/mem settings all set in stone, start tweaking the vcore if you want... Don't Priem95 for 24 hours before you tweak the vcore. Mess with vcore first, then Prime95...

Last edited by Xi0nic at 2008-01-16 02:27:28

#885027 by CusmaR (Power User) at 2008-01-16 08:58:00 (5 years ago) - [Report]

Ah ok thanks

yeah i saw that in my bios so i went for 2.0 as memory multiplier (1:1), and also set the memories to 4-4-4-12.

ah ok i thought the vcore could stay at 1.2500 (well sure it can, i understand that too) never thought about lowering it

but i guess thats a smart move!

thanks for all your help :wub:

, now i have to buy some good thermal paste and a good cooler, this was really fun!

#887660 by Bill1234 Donor

(Power User) at 2008-01-21 02:12:35 (5 years ago) - [Report]

AMD Sepron[tm] 2600+ 1,8ghz.

Possible to overclock? to how much? and for how much $$?

#888130 by johnboyjoe (User) at 2008-01-21 23:35:03 (5 years ago) - [Report]

my cupboard cooling system :lol:

This image has been resized, click here to view the full-sized image.

i have an extraction fan sucking fresh air from the loft onto the board, results are bloody great my E6750 is clocked to 3.64GHz - 1.41v and idling at 17�C running prime its hitting around 40�C now testing 3.7GHz temps are up a bit but nothing to worry about yet, has been stable for 40+ mins so far :-D

Last edited by johnboyjoe at 2008-01-22 14:02:23

#888756 by CusmaR (Power User) at 2008-01-23 02:05:56 (5 years ago) - [Report]

where do i find my default volt to the memory?

(didnt find it where i searched in bios anyway)

Last edited by CusmaR at 2008-01-23 02:06:19

#889082 by hmhef Donor

(VIP) at 2008-01-23 17:26:17 (5 years ago) - [Report]

CusmaR wrote:

where do i find my default volt to the memory?

(didnt find it where i searched in bios anyway)

u will not find individual voltage of ram , u can change it with refrence to the orignal voltage (0.2,0.1,0,-0.1,-0.2)

#889117 by unknown[58044] at 2008-01-23 18:57:52 (5 years ago) - [Report]

your modules are rated at 4-4-4-12 at 2.1 Voltage. So set this in BIOS.

#889193 by CusmaR (Power User) at 2008-01-23 21:01:18 (5 years ago) - [Report]

well yeah i know you set 0,1 etc in bios... but if i want 2.1v, how much v should i add? i dont know what default is.

#889196 by unknown[138959] at 2008-01-23 21:10:04 (5 years ago) - [Report]

ony my asus p5k-se the default is 1.8v so it you wanted 2.1 add 0.3v

#889666 by CusmaR (Power User) at 2008-01-24 21:21:45 (5 years ago) - [Report]

ok!, i got one more

Whats the difference between the multipliers?
what parts get more pressure if i run at lets say:

fsb 400

What parts vill get more "damage" if i run with x9 or x8,x7 etc ? (the fsb is 400 on each multiplier)

#889903 by hmhef Donor

(VIP) at 2008-01-25 11:34:08 (5 years ago) - [Report]

CusmaR wrote:

ok!, i got one more

well increasing the FSB shouldnt do any damage, some new motherboard have an option to automatically increase the FSB 17% automatically
neither the multiplier should be any worng because it is probablay locked to a maximum (9x)

however the thing that may cause damage is the voltage increase
the orignal ram v should be 1.8v, dont go more than +0.1v
the cpu v should NEVER exceed 1.5v, some people run it constantly @1.7v but that totally decrese its life time

#889926 by unknown[58044] at 2008-01-25 12:28:16 (5 years ago) - [Report]

Quote:

the orignal ram v should be 1.8v, dont go more than +0.1v

False, his default RAM voltage is 2.1v. (http://www.corsair.com/_datasheets/TWIN … 6400C4.pdf) .
You can increase it safe to 2.2/2.3 if you need. If you want more get some additional cooling for the RAM,which is RAM is pretty good for OC.

You decrease the multiplayer to increase the FSB, if FSB gets higher then your RAM rated speed then you should OC your RAM ("pressure it" ) also you may need to do the same to the Nordbridge to boot at lets say 450-500FSB+, depends on the mobo. So lower multi = higher FSB and eventuall stress on the Nordbridge and RAM, higher multi = lower FSB ~ no stress. In your case with the 400FSB, there is no difference. But why would you want to run at 7x400?

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