Core i7/X58 Overclocking Thread

[Chicken Patty]

I do generally agree with this. I believe some amount of stress testing is good, but in general go with it and if you have problems then tweak. Exception are those people that do 24/7 work with full load on all cores/threads as they need absolute stability. But this kind of goes in the face of overclocking too since any overclocking always increases the chance that the system will be unstable, regardless. Moreover, if it is just a small instability it may now show for weeks.

By the way, those that haven't done so already head on over to my contest thread here http://www.xtremesystems.org/forums/...d.php?t=220984 and drop me a line. I can only win with your support!

Thanks guys

amen to that

[2slick4u]

I'm happy now the temperatures are better 40*C idle and load 70*C

[Chicken Patty]

I'm happy now the temperatures are better 40*C idle and load 70*C

now go higher

[2slick4u]

I dunno if i can get 4ghz I currently lowered the vcore from 1.35 to 1.32 :P
I havent prime it but now im too lazy i just run it like this until it crashes LOL :P

[Chicken Patty]

I dunno if i can get 4ghz I currently lowered the vcore from 1.35 to 1.32 :P
I havent prime it but now im too lazy i just run it like this until it crashes LOL :P

just enjoy it then, when you start getting bored, then overclock lol.

[2slick4u]

just enjoy it then, when you start getting bored, then overclock lol.

yes i totally agree with that

glad this kas 3000 doing the job with the temp
i was going to switch to the true 120 but glad i just spend 15 bux on the fan and got me some results

[buddatech]

I cant seem to get my kas 3000 fan to fit on my heatsink without it hitting my ram and my ram is on the second slot already :S

Didn't waste anytime on getting that Kaze 3000 and fan mate congrats! Hope it works out for you and give a comparison between the noctua fans and the kaze, thanks.

[2slick4u]

Didn't waste anytime on getting that Kaze 3000 and fan mate congrats! Hope it works out for you and give a comparison between the noctua fans and the kaze, thanks.

well i just got 1 kas 3000 I also have the other nortua fan hook up to the exhaust side. Temps with stock nortua was like 45-47 idle and 77-80 load with prime of course

and right now i'm idling at 40-43 and 69-72 load with prime

And also i dunno why my fan mate dont seem to work properly..
I put it at max and the speed is like 2500RPM with out the fan mate its 2800RPM?

[buddatech]

nice temp decrease for a small investment

[2slick4u]

nice temp decrease for a small investment

you think its my fan mate that is not working properly..
I cant get the 3000rpm speed :P my max is 2800rpm

[buddatech]

No, mine is the same. Fan mate draws power from the fan in result not giving you 3000+/- 10%

[2slick4u]

yeah i took it off fan mate and now its running 2800+ which is pretty good my temps are decent on 3.8ghz 1.32v
only problem is its blockng my 1st dimm :P cant fit a ram there :S

[Godmyster]

Just out of curiosity, what temps are you guys getting?

My i7 920 (4GHz @ 1.344v CPU-Z) is under a TRUE-120 and I'm getting about 39-42*C idle and 73-77*C load.

Just wanted to compare to see if my temps are normal.

How did you get to 4Ghz? i noticed your sistem is like mine except i only got 3gb in DC.. i also wanted to get mine to 4Ghz.. im @ 3.8 for now..

Thanks

[PC_User]

well i just got 1 kas 3000 I also have the other nortua fan hook up to the exhaust side. Temps with stock nortua was like 45-47 idle and 77-80 load with prime of course

Those kas fans are insane...pushing 113cfm at 3000rpm. Must be loud, though. Good drop of about 5*C nevertheless.

How did you get to 4Ghz? i noticed your sistem is like mine except i only got 3gb in DC.. i also wanted to get mine to 4Ghz.. im @ 3.8 for now..

Thanks

My settings:

Frequency.........................4.0 GHz
Clock Ratio.......................20x
Bus Speed........................200 MHz
vCore..............................1.3750 in BIOS | 1.344v idle, 1.328v load (CPU-Z)
QPI/VTT voltage................1.32v
DRAM..............................1.58
Uncore Frequency..............3200 MHz
QPI Link...........................x36 (7.4 GHz)
Performance Enhancement...Standard
Memory Multiplier..............8x
Memory Speed..................1600 MHz
*Hyper-Threading Off

[scyzer]

Im thinking of upping IOH volt to 1.20 to get stability. Any thoughts?

[dejanh]

Im thinking of upping IOH volt to 1.20 to get stability. Any thoughts?

The question is, what are you trying to get stable?

[scyzer]

The question is, what are you trying to get stable?

I cant boot into Windows, but I can't get a higher than 3.7GHz clock prime stable.

I've tried multiple things, different voltages for various settings, different multipliers, etc.

Can't get Bclk above 185. Maybe I can try an even lower CPU multi to see if it is even possible to get the Bclk higher with my setup.

If you could provide a bit of help (do you need more details?) that would be great.

[dejanh]

I cant boot into Windows, but I can't get a higher than 3.7GHz clock prime stable.

I've tried multiple things, different voltages for various settings, different multipliers, etc.

Can't get Bclk above 185. Maybe I can try an even lower CPU multi to see if it is even possible to get the Bclk higher with my setup.

If you could provide a bit of help (do you need more details?) that would be great.

Sure, let's see what you max BCLK is to start...also, please post your system configuration and current settings...

Drop your multiplier to 12x, then set your BCLK to 170MHz to start. Set your CPU Voltage to 1.35V, and your QPI Voltage (VTT Voltage) to 1.35V, and make sure your DRAM voltage is set to 1.65V (or very close to that). Also, set your memory to a low multiplier so that you are running your memory below its rated speed. Try to boot Windows. If you boot fine, restart and increase your BCLK by 10MHz to 180MHz. Then if you boot again, increase it by another 10MHz until you get to 200MHz. After 200MHz increase your BCLK in 5MHz increments until you get to 215MHz. Then increase it in 1MHz increments and see if you can boot.

If at any point you cannot boot, increase your QPI Voltage (VTT Voltage) by 0.025V and try again. Keep increasing it by that amount until you can boot at the given BCLK. Do not exceed 1.475V on QPI. For example, if you cannot boot at 190MHz with 1.35V QPI and you increase the voltage twice (2 x 0.025V) to 1.4V QPI and then you boot fine, you need a minimum 1.4V QPI for 190MHz BCLK. If you want to be sure that the given BCLK is stable then take the minimum QPI voltage required to boot and add about 0.025V to 0.05V to it.

By the way, check your private messages. I need some help from you as well.

[PC_User]

I cant boot into Windows, but I can't get a higher than 3.7GHz clock prime stable.

I've tried multiple things, different voltages for various settings, different multipliers, etc.

Can't get Bclk above 185. Maybe I can try an even lower CPU multi to see if it is even possible to get the Bclk higher with my setup.

If you could provide a bit of help (do you need more details?) that would be great.

Try to lower the CPU multi and keep the ram speed and ratios unchanged. Don't change the voltages. If it boots and is stable, then its the CPU that needs tweaking. If it doesn't, then you know your ram settings are unstable at that speed.

[dejanh]

Try to lower the CPU multi and keep the ram speed and ratios unchanged. Don't change the voltages. If it boots and is stable, then its the CPU that needs tweaking. If it doesn't, then you know your ram settings are unstable at that speed.

He has not even done the work to determine his max BCLK or what settings he needs to run a particular BCLK. This just won't work for him. It would be like running before learning how to walk.

Overclocking is not just about plugging in random numbers and hoping for the best. There is a process for it that should be followed if you want to have a decent chance finding good overclocks without excessive trial and error.

[Godmyster]

Those kas fans are insane...pushing 113cfm at 3000rpm. Must be loud, though. Good drop of about 5*C nevertheless.



My settings:

Frequency.........................4.0 GHz
Clock Ratio.......................20x
Bus Speed........................200 MHz
vCore..............................1.3750 in BIOS | 1.344v idle, 1.328v load (CPU-Z)
QPI/VTT voltage................1.32v
DRAM..............................1.58
Uncore Frequency..............3200 MHz
QPI Link...........................x36 (7.4 GHz)
Performance Enhancement...Standard
Memory Multiplier..............8x
Memory Speed..................1600 MHz
*Hyper-Threading Off

what bios are you using? i cant get 20x200 stable at all, im using F4r bios for the UD5..

[Aivas47a]

what bios are you using? i cant get 20x200 stable at all, im using F4r bios for the UD5..

Some 920s just don't seem to like that combination. Try 21 (with turbo) x 191 or 19 x 211.

[dejanh]

what bios are you using? i cant get 20x200 stable at all, im using F4r bios for the UD5..

3838B has a weak IMC IIRC. Try 19x211 as the post above said.

[Godmyster]

Bios said that i can only go up to 20x, i tried 19x211 but didnt go maybe some of my voltages are not right, dunno, i also wanted to know the best bios to use here...

[scyzer]

Sure, let's see what you max BCLK is to start...also, please post your system configuration and current settings...

Drop your multiplier to 12x, then set your BCLK to 170MHz to start. Set your CPU Voltage to 1.35V, and your QPI Voltage (VTT Voltage) to 1.35V, and make sure your DRAM voltage is set to 1.65V (or very close to that). Also, set your memory to a low multiplier so that you are running your memory below its rated speed. Try to boot Windows. If you boot fine, restart and increase your BCLK by 10MHz to 180MHz. Then if you boot again, increase it by another 10MHz until you get to 200MHz. After 200MHz increase your BCLK in 5MHz increments until you get to 215MHz. Then increase it in 1MHz increments and see if you can boot.

If at any point you cannot boot, increase your QPI Voltage (VTT Voltage) by 0.025V and try again. Keep increasing it by that amount until you can boot at the given BCLK. Do not exceed 1.475V on QPI. For example, if you cannot boot at 190MHz with 1.35V QPI and you increase the voltage twice (2 x 0.025V) to 1.4V QPI and then you boot fine, you need a minimum 1.4V QPI for 190MHz BCLK. If you want to be sure that the given BCLK is stable then take the minimum QPI voltage required to boot and add about 0.025V to 0.05V to it.

By the way, check your private messages. I need some help from you as well.

Sorry, been busy with my Honours thesis so I haven't been able to do this yet.

However, I've tried Vcore at 1.400, QPI/VTT at 1.360, VDIMM at 1.660 and CPU PLL at 1.88 before and couldn't get prime stable with 18, 19, 20 times multis with Bclk over 190. I could boot into windows in most instances. I've set Memory and Uncore multis to 6x/(12x or 13x) and 8x/(16x or 17x) respectively. According to GB's Easy Tune 6, at load Vcore dropped to 1.360 and VDimm to 1.616. I am using Prime 95, CPU-Z and RealTemp to stress and monitor.

I know that I should have tried finding my max Bclk, but I was still hoping at the time that I could just get to 4.0GHz with ease (apparently not).

Now I'll have to wait until I get some University stuff sorted before I can try again. Thanks for the suggestions though.