CPU-Z Validator Database

Ok i got it to 3.4ghz with a little more juice to the NB and RAM and CPU but it bluescreens under heavy loads.

I have the intel E6600 on a FoxConn nforce 680i motherboard. My ram is PDP patriot DDR2-800 @ 900mhz 4-4-4-12 @ 2.0v

Anyone have a basic C2D ocing guide?

Could there be a bad vdroop on your mobo?

See if these a vcore offset control in your BIOS, if there is enable it.

Is that the PR24D512/64 memory? If that is the value DDR2 that might be your problem. If it is, try uping your timings..oh 5.5.5.12 and see if it can handle the memory timings then.

Edit:Matter of fact you still have a little head room for your voltage on your memory. I have seen 2.5 on th enet but you better make sure you have coolingother wise just bump it up a notch more.

Run memory 1:1...

Disable EIST in BIOS?

Quote: Originally Posted by Lokie Is that the PR24D512/64 memory? If that is the value DDR2 that might be your problem. If it is, try uping your timings..oh 5.5.5.12 and see if it can handle the memory timings then. Edit:Matter of fact you still have a little head room for your voltage on your memory. I have seen 2.5 on th enet but you better make sure you have coolingother wise just bump it up a notch more.

Here are the parts that I am running:

Newegg.com - Intel Core 2 Duo E6600 Conroe 2.4GHz 4M shared L2 Cache LGA 775 Processor - Retail

Newegg.com - Foxconn N68S7AA-8EKRS2H LGA 775 NVIDIA nForce 680i SLI ATX Intel Motherboard - Retail

Newegg.com - Patriot eXtreme Performance 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail

Newegg.com - Swiftech Apogee GT CPU Cooler Block - Retail

Newegg.com - RAIDMAX RX-630A ATX12V / EPS12V 630W Power Supply 115/230 V CB, IEC, TUV, UL, CSA - Retail

XFX - Products GeForce™ 8800 : Models

Video Card is at 575/1800.

Any ideas?

And i do have extra voltage going to my CPU.

I backed my cpu off to 3.0ghz and i ran Super PI and Prime 95 for 10 hours with no problems.



~Tim

What do you have your NB voltage set at currently? On a 680i board you *should* need a NB voltage of about 1.4v and a cpu voltage of about 1.525 to get an e6600 to 3.6ghz from my personal experience. Obviously thats going to be slightly different depending on your mobo and your processor stepping but its a good reference. I would say run your ram to fsb 1:1. You might try those settings and see if it will boot at 400x9, then slowly back down the voltages until you find the minimum that it will remain stable at. I doubt that helps but I figured I'd give my $.02. Good luck. Oh and turn of c1e, speedstep, and pci-e linkboost.

Quote: Originally Posted by hazardous What do you have your NB voltage set at currently? On a 680i board you *should* need a NB voltage of about 1.4v and a cpu voltage of about 1.525 to get an e6600 to 3.6ghz from my personal experience. Obviously thats going to be slightly different depending on your mobo and your processor stepping but its a good reference. I would say run your ram to fsb 1:1. You might try those settings and see if it will boot at 400x9, then slowly back down the voltages until you find the minimum that it will remain stable at. I doubt that helps but I figured I'd give my $.02. Good luck. Oh and turn of c1e, speedstep, and pci-e linkboost.

OK. I am at 3.75ghz stable

CPU-Z Validator Database

But why wont my FSB go to 400???? It keeps going to 375. my cpu is at 1.376v

any ideas?

~Tim

Screenshots:

Quote: Originally Posted by houseofbugs OK. I am at 3.75ghz stable CPU-Z Validator Database But why wont my FSB go to 400???? It keeps going to 375. my cpu is at 1.376v any ideas? ~Tim Screenshots:

Hmm. Do you mean it keeps kicking down to 375 when you try to set it at 400? You might check to see if there is a new bios out, since its a relatively new board. Also I dont know anything about the foxconn board, but I have read that some 680i boards will allow you to change the FSB voltage. If that is the case with your foxconn board, set that to 1.4 (same as NB voltage).

Quote: Originally Posted by hazardous Hmm. Do you mean it keeps kicking down to 375 when you try to set it at 400? You might check to see if there is a new bios out, since its a relatively new board. Also I dont know anything about the foxconn board, but I have read that some 680i boards will allow you to change the FSB voltage. If that is the case with your foxconn board, set that to 1.4 (same as NB voltage).

I set it to the proper mhz and it still sets it down. Maybe I just need to wait it out for a new BIOS or just pass this board onto my little brother who has an Intel PD 805 and get a different board. What is the best socket 775 board for overclocking that has full speed(16x 16x) SLI? I will get a different one if I need to.

BIOS Screenies:
Foxconn N68S7AA-8EKRS2H nForce 680i Motherboard :: TweakTown
VR-Zone : Technology Beats - Foxconn N68S7AA-8EKRS2H NVIDIA 680i SLI
www.hardwarezone.com® :: Articles - Coolest Hardware, Hottest Reviews <- OC Related

This is the reason is got this board:
*quote from: Foxconn N68S7AA-8EKRS2H nForce 680i Motherboard :: TweakTown

"Unfortunately we didn’t have a huge amount of testing time available to us for overclocking but what we did get in the time we had was amazing. 507MHz FSB was what we managed to get with only having to change the voltages up 2 steps in each case – we think that if we had more time, we might have gotten even more.

ItÂ’s quite an impressive overclock in that the more expensive ASUS Striker Extreme managed around 510MHz FSB (and we had more time to OC to attain that result) and that costs considerably more and the Foxconn FSB result is a good improvement over the nVidia reference motherboards we have tested from companies like eVGA."

I wouldnt get rid of the board if I were in your shoes, I have yet to see a 680i board that cant go to atleast 450fsb. That's obviously not the problem. Keep pushing that voltage slightly. It should take atleast 1.5volts to the cpu to get you to 400mhz fsb and possibly more.

Quote: Originally Posted by hazardous I wouldnt get rid of the board if I were in your shoes, I have yet to see a 680i board that cant go to atleast 450fsb. That's obviously not the problem. Keep pushing that voltage slightly. It should take atleast 1.5volts to the cpu to get you to 400mhz fsb and possibly more.

CPU-Z Validator Database

OK this is where it wont go any higher. The NB was at 1.44v and the cpu at 1.5v. I have the FSB set to 1600mhz (1600 / 4 = 400mhz) but it will not go past 381mhz mark on the FSB EVEN when i specify it to. Maybe I need a new BIOS? or a new motherboard if i want to OC further?

~Tim

CPU-Z Validator Database

^My highest *STABLE* OC with this motherboard.

What should i do? Get a new motherboard? or wait it out for a new BIOS?

*BUMP*


Anyone help?

The EIST or Spread Spectrum options might be destablizing your settings, generally you want to disable any options that automatically adjust power or clock settings when overclocking.

K...this is an obscure setting, one of those numbers most people don't consider "Sexy" but I can almost garauntee it's your "Problem"

TRC

I ran into this problem on my 975x based Asus board, and it does not have the ability to change it in the Bios, nor does the software tweeker "Memset" allow changes to it either.
(You can find that in my "Ultimate links" at the bottom of my sig)


The one screenie I saw with your CPUZ ram timings showed it was running at 6...waaaay to tight!!!!

The SPD timings in the same shot for your ram at 400MHZ is 21, and for 500MHZ it's 35!

On Intel chipsets like mine, you have a FSB "Strap" wich will change timings that you cannot normally access such as TRC, and they get "Looser" (The 1066 ratio,or 1 to1) when you have a higher memory divider ratio (Like using the 533 ratio) wich is kind of a problem when overclocking, since you tend to use a lower ratio..wich makes all the timings tighter, exactly the opposite of what you need for high FSB.

The NVIDIA chipset you have can run the memory "Unlinked" wich may or may not help deal with that...something you will have to investigate since I do not have one to test with, but i have reead about that setting on the net.

I suggest you drop the multiplier on the CPU down to 8, and then re-run your testing to find out the max FSB of the board, and the ram without bumping into the max speed for your CPU.

Then put the multiplier back to 9 with the FSB and ram well below the max, and then go for max CPU speed...then combine them!

I use 1MB Super Pi test to find what is the fastest combo of ram speed and timings...loose (5-5-5-15) and high speed isn't always faster than tight and low with DDR-2 (800FSB and 4-4-4-12 for example)

EDIT: My E6600 was stable all day at 3.6GHZ, borderline at 3.8GHZ, but would bench at over 4GHZ with "Chilled" air cooling in the winter...some of the newer steppings that are shipping now are having trouble at 3.4GHZ and above...did you happen to get that code off the heat spreader before installing?

Quote: Originally Posted by $SOLID$ Necro K...this is an obscure setting, one of those numbers most people don't consider "Sexy" but I can almost garauntee it's your "Problem" TRC I ran into this problem on my 975x based Asus board, and it does not have the ability to change it in the Bios, nor does the software tweeker "Memset" allow changes to it either. (You can find that in my "Ultimate links" at the bottom of my sig) The one screenie I saw with your CPUZ ram timings showed it was running at 6...waaaay to tight!!!! The SPD timings in the same shot for your ram at 400MHZ is 21, and for 500MHZ it's 35! I suggest you drop the multiplier on the CPU down to 8, and then re-run your testing to find out the max FSB of the board, and the ram without bumping into the max speed for your CPU. Then put the multiplier back to 9 with the FSB and ram well below the max, and then go for max CPU speed...then combine them! I use 1MB Super Pi test to find what is the fastest combo of ram speed and timings...loose (5-5-5-15) and high speed isn't always faster than tight and low with DDR-2 (800FSB and 4-4-4-12 for ecample)

I dont think I can change my CPU multiplier. I will look but I dont think I saw it anywhere in the BIOS. I did post links in the above post to reviews with BIOS screnies. If I cant and this were you would you return the motherboard and get a different one? or just be happy with it at 3.0ghz stable and leave it.

Quote: Originally Posted by $SOLID$ Necro K...this is an obscure setting, one of those numbers most people don't consider "Sexy" but I can almost garauntee it's your "Problem" TRC I ran into this problem on my 975x based Asus board, and it does not have the ability to change it in the Bios, nor does the software tweeker "Memset" allow changes to it either. (You can find that in my "Ultimate links" at the bottom of my sig) The one screenie I saw with your CPUZ ram timings showed it was running at 6...waaaay to tight!!!! The SPD timings in the same shot for your ram at 400MHZ is 21, and for 500MHZ it's 35! On Intel chipsets like mine, you have a FSB "Strap" wich will change timings that you cannot normally access such as TRC, and they get "Looser" (The 1066 ratio,or 1 to1) when you have a higher memory divider ratio (Like using the 533 ratio) wich is kind of a problem when overclocking, since you tend to use a lower ratio..wich makes all the timings tighter, exactly the opposite of what you need for high FSB. The NVIDIA chipset you have can run the memory "Unlinked" wich may or may not help deal with that...something you will have to investigate since I do not have one to test with, but i have reead about that setting on the net. I suggest you drop the multiplier on the CPU down to 8, and then re-run your testing to find out the max FSB of the board, and the ram without bumping into the max speed for your CPU. Then put the multiplier back to 9 with the FSB and ram well below the max, and then go for max CPU speed...then combine them! I use 1MB Super Pi test to find what is the fastest combo of ram speed and timings...loose (5-5-5-15) and high speed isn't always faster than tight and low with DDR-2 (800FSB and 4-4-4-12 for example) EDIT: My E6600 was stable all day at 3.6GHZ, borderline at 3.8GHZ, but would bench at over 4GHZ with "Chilled" air cooling in the winter...some of the newer steppings that are shipping now are having trouble at 3.4GHZ and above...did you happen to get that code off the heat spreader before installing?

Where do I find the code on the heat spreader?

Quote: Originally Posted by houseofbugs Where do I find the code on the heat spreader?

Ok it was the TRC but i still could not get stable over 3.0ghz. I guess I will just be happy at 3.0 with super low timings.

But for those of you wondering here is my highest OC *NOT STABLE*:

CPU-Z Validator Database

~Tim

THANKS EVERYONE WHO HAS HELPED ME!