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3.20 on q6600 on xfx 680i LT sli - Page 6

post #51 of 313
not a problem Swoll, nice work on the overclock.

i wouldnt let those temps get any higher, not without some good aftermarket cooling. those kind of kind of clocks and temps on a quad core should really warrant water cooling, or VERY good cpu cooling.

but 3.7 is very nice.

if you notice, the reason the P31 is so much better than say, the P07, is coz you get all the extra voltage options, so instead of pumping huge Vcore into the CPU in an attempt to get stability, you can slightly up the NB and SB (MCH) volts.

keep posting results, the max i got was 4ghz but i rekon with a bit of skill and some very decent cooling, it could go higher.
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post #52 of 313
I'm up to 3.3GHz stable now. Idle temp is 33, load temp is 48. I can get it to run considerably faster, but it'll crash within a half-hour under stress testing in Prime95 or OCCT. My question is, how much is too much for the voltage levels? I'm new to OCing and I'm a little scared to push it much further for fear of damaging something. My next goal for a stable clock is 3.4GHz. Maybe you can offer a suggestion?

Here are my current levels:
Vcore: 1.4927 BIOS, 1.488 actual (Pencil mod is done; Vdrop is next to nothing between idle/load -- helped to stabilize A LOT)
Memory: 1.800 (Locked at 800MHz. Extra voltage here doesn't seem to affect stability)
FSB: 1.5
SPP (NB): 1.55
MCP (SB): 1.55
HT: 1.30

Edit: Forgot to mention 3dmark is up from 11457 @ 3150MHz to 13052 @ 3300MHz
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XFX 680i LT
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post #53 of 313
Quote:
Originally Posted by rob487 View Post
I'm up to 3.3GHz stable now. Idle temp is 33, load temp is 48. I can get it to run considerably faster, but it'll crash within a half-hour under stress testing in Prime95 or OCCT. My question is, how much is too much for the voltage levels? I'm new to OCing and I'm a little scared to push it much further for fear of damaging something. My next goal for a stable clock is 3.4GHz. Maybe you can offer a suggestion?

Here are my current levels:
Vcore: 1.4927 BIOS, 1.488 actual (Pencil mod is done; Vdrop is next to nothing between idle/load -- helped to stabilize A LOT)
Memory: 1.800 (Locked at 800MHz. Extra voltage here doesn't seem to affect stability)
FSB: 1.5
SPP (NB): 1.55
MCP (SB): 1.55
HT: 1.30

Edit: Forgot to mention 3dmark is up from 11457 @ 3150MHz to 13052 @ 3300MHz
hmm... that Vcore is too high for 3.3ghz ay... i was in @ 3.6ghz with 1.43v actual. what cooling do you have for CPU?

i wouldnt put it past 1.5v or close to it without water or something, you shouldnt need that much Vcore.

whats your FSB/multiplier set at for 3.3ghz? also drop that SPP volt down to 1.5 at the MOST. the FSB should be ok at 1.5v, should really be 1.4v

SB is fine @ 1.55v, dont need to put it higher, not for 3.3ghz.

try dropping some voltages, espeically that Vcore. one thing i noticed when overclocking the XFX 680i LT, overvolting tends to cause more instability. by dropping some voltages i actually gained higher clocks. weird i know, but give it a go.
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post #54 of 313
I flashed to the P32 BIOS which helped a little with getting that VCore down. I'm not sure why since the only update was for CPU compatibility. I played with the voltages for nearly an hour... tried several combinations, including undervoltaging the NB and FSB so low I had to clear the CMOS to get the machine to POST without locking up This is where I'm at now:

FSB is @ 1440 w/ 9x multi to get 3240MHz

Vcore: 1.456 actual
FSB: 1.4
NB 1.45
SB 1.525
HT 1.2

Played around with different combinations of everything, but just couldn't get windows to boot properly at a lower Vcore. It would lock up during the loading screen at Vcores less than 1.43 -- crashed on boot at Vcores up to 1.45ish. Stable so far @ 1.456.

I just use air cooling for my system. I've got a Zalman 9700 cooler. Ultra Aluminus case with high airflow intake and exhaust fans. Ultra 700W power supply. CPU runs @ around 32 idle, 48 under full load.

I'm gonna play around with the voltages some more later, maybe play with the FSB speed and try to push it a bit further -- I'm doubting I can get it much higher though without massive voltage. I don't know where my system is failing. I'll gladly take more input if you've got suggestions -- It would be nice to take it further, but if I can't, I'm happy with where it's at.
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post #55 of 313
Hi all, I found this thread as I was looking for help w/ my XFX 680i LT SLI and my q6600. I would like to flash my bios to the P31 Version (as I have the XFX P07 now) and was looking on how to do that. I would like to use an ISO but the one I downloaded said that it's not the right manufactures numbers (or something like that).

Any and all help would be greatly appreciated.
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post #56 of 313
NM, found and used Rob's ISO. Worked like a charm Thanks for the helpful file!

I am also in the same boat as him, as I can only get my FSB to 1440 (9 multiplier). Any higher and windows will boot up, but then shuts back down.

My Voltages are a little different.

CPU Core: 1.45V
CPU FSB: 1.5V
nForce SPP: 1.50V
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post #57 of 313
Okay, here's what I got for a stable 3248.4MHz OC right now:

Multiplier - 9
FSB Mem - Unlinked
FSB (QDR) - 1444MHz
Mem - 800MHz
Mem Timing Settings - Optimal

Voltages:
CPU Core - 1.58750V
CPU FSB - 1.5V
Mem - 2.100V
nForce SPP - 1.50V
nForce MCP - Auto
HT nForce SPP <-> MCP - Auto

Thus far this has been stable for me and scored me 15521 in 3DMark06. At highest the temperature has been 51c.
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post #58 of 313
I posted a link to an ISO I made with the P32 bios in this thread. Alternatively, here is the direct link to the bootable iso. It also has the P07 bios on it in case things go pear shaped

Before doing this, I simply could not get my board to run above stock settings. Afterwards, I managed a 4Ghz OC on my E8400.

Other settings that made a material difference to stability:

HT: 1.25v
CPU VTT: 1.3v
NB: 1.45v
SB: 1.5v

My board had a fsb hole at 400Mhz, where it was incredibly unstable. It seems fine from 425Mhz upwards. I dropped the multi by one and just pushed past the hole. I've settled on 3.6Ghz with an 8 multi as my 24/7 stable OC as this is a server machine and it only needs a lowly 1.23v for this modest OC (whereas 3.825Ghz needs 1.325v and 4Ghz needs 1.3875v)

EDIT: another thing that made a difference was that the daft castrated P07 bios actually autos one of the spread spectrum settings while hiding it from the user. WIth the P32, you can switch it off.
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post #59 of 313
I feel really dumb asking because I am new to this, but what are these NB, SB voltages you speak of? I can only adjust the voltage in the following:

CPU Core
CPU FSB
Memory
nForce SPP
nForce MCP
HT nForce SPP <-> MCP

I just might be too new at this to understand.

If any of you have some incite on RAM settings too I'm all ears. I haven't bothered with it has I'm not to keen on the terms. So any help with Memory is going to have to be broken down very simply for me
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post #60 of 313
Quote:
Originally Posted by RidgeMaster2k View Post
I feel really dumb asking because I am new to this, but what are these NB, SB voltages you speak of? I can only adjust the voltage in the following:

CPU Core
CPU FSB
Memory
nForce SPP
nForce MCP
HT nForce SPP <-> MCP

I just might be too new at this to understand.

If any of you have some incite on RAM settings too I'm all ears. I haven't bothered with it has I'm not to keen on the terms. So any help with Memory is going to have to be broken down very simply for me
haha dont feel dumb man, its pretty hard your first time round.

OK, so firstly, the NB (northbridge) is represented by the SPP voltage, and the SB (southbridge) is represented by the MCP. the CPU FSB (VTT) is extra voltage to your FSB, helps in higher clock stability, and should never go higher than 1.5v .. i think thats the max anyway.

the MCP (SB) is stock 1.5v, and really you the most you will need is 1.6v. dont ever go higher than say 1.7v. you shoudnt need that much.

the SPP (NB) comes stock @ 1.35v. never put your NB higher than 1.55v or you will very swiftly start to cook the board. i ran mine at about 1.4 to 1.45v, was very stable.

you dont need to touch that HT, im not actually sure what it does, and increasing it never once helped my stability. so i dont see the point in adding more voltages to a board than you need to.

the Vcore for the CPU is probably most important. stock 2.4ghzis 1.28v. you should only ever increase this amount in very small doses. i see you have 1.58vcore for 3.2ghz?? WAY too high. WAY. i didnt even have that much it to boot in @ 4ghz. best turn that WAY down to avoid damaging your CPU.

for memory. most PC6400 ram can do 4-4-4-12 timings at the 2T command rate, at 1.8v - 2.0v. to be honest, outside of benchmarking and gaining a few points here and there, its not the biggest increase in performance changing the RAM, but it can be a big impact on stability. set it to 2.0v, 800-850mhz, 4-4-4-12-2T (or even try 1T, much faster, less stable) and leave it be.

my advice to you mate: leave all the voltage at stock, put the CPU Vcore @ 1.3v and work from there. only increase it slightly.

if you get to a speed, like say 3.3ghz, where no amount of Vcore is working, do not increase it. you may have hit what is called a FSB hole, where your motherboard wont support that FSB speed. its common, especially for this board. try perhaps dropping the multiplier and increasing the FSB to get over the hole..or just try a higher FSB. sometimes, 400mhz FSB wont be stable..but 410mhz will be.

let us know how yo go. but please keep that Vcore down. voltages shouldnt be messed with without experience. but since you have already, just set a base volt, like 1.3v and continue to increase the FSB until it wont boot. if you find a spot where it wont boot no matter what, try a different FSB speed, play around a bit, BEFORE touching the voltage.
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