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I need help with an OC please. Q9550

B

boglwe

Senior member
Its amazing for a chip that is so easy to OC that there is such little information on the web for this particular chip. Yes, there is a lot of stuff, but nothing specific. Here is my problem.

The chip will OC wonderfully stable at 3.65, Anything above that, I get a blue screen at windows startup, but it will post. I just got new memory as well. What I want is a 3.8ish OC.

Here is a pic of the 3.65 OC. My new memory is Corsair Dominator 1066Mhz, PC2-8500 C5. Here is the pic of the curent Latency. This looks a bit odd, but I really do not know what I am doing here.

What can I do?

THanks in advance

Bogs
 
Well for starters, you need more vcore for 3.8, i think thats given.

Second, your motherboard might need more vNB and vFSB to get higher FSB.

Third, the increase in voltages might not be worth the increase in performance. 3.6 ghz is a pretty nice 24/7 clock for a q9550, I'd say you've done quite well for "not knowing what your doing".

Last, your ram is a little loose at 5-7-7.
 
I do know a bit, Its the Ram part you talked about where I get lost. I can stick with this OC , but what can I do about the ram?
 
Originally posted by: boglwe
I do know a bit, Its the Ram part you talked about where I get lost. I can stick with this OC , but what can I do about the ram?
Click to expand...

You can go into the Dram settings of your motherboard. It is probably set by SPD right now, and you can change it to user defined. Then, you need to start lowering them one notch at a time and test it out... A good program is mem test and son. Generally, though, if your timings are too tight, you will lock up very fast. It isn't something that generally takes more than a few minutes to find if you have it wrong. Also, you may need increase voltages to those DIMMs. Generally, IMO, DDR2 is safe up to ~2.2 volts. Of course, others may dissagree, but I have always ran my memory above specification and never ran into an issue. Granted, that doesn't mean others don't... But if people like OCZ, Patriot, etc can sell their ram at a 2.2v specification, something tells me it is 'relatively' safe.

After checking out your latency screenshot, I suggest

1) Changing the mem divider to 1:1 ratio instead of 5:6 as there is very, very, very little, if any benefit to running asynchronous. This also might be why your overclock is failing at a higher front side bus since the memory is probably being pushed beyond stable frequency.

2) Once you change the memory divider to 1:1, lower the timings one notch each and test for stability.

3) You may want to check your Dram voltage. Running higher voltage will generally allow for higher freqency and sometimes better latancy.

Good luck!
 
Personally I keep my q9550 at 4.284 for 24/7, but I guess that's just me. for the ram, go into the advanced ram timings and you'll see 5, 7, 7, 24. Look at the timings the ram is rated at, 5-5-5-15 I believe, and manually set it to those. Personally I'd put a touch more voltage to the processor and northbridge and get a bit more of an overclock, your temperatures are fine and your voltages are a long way away from dangerous. your ram is running at ddr-1032 and its rated for 1066, so it will definitely be stable at those timings. If you overclock more, watch the ram speed that its not getting way high, or else you will need to change the divider so the ram is running slower but the fsb remains high. You may already know about this.
 
Originally posted by: TidusZ
your ram is running at ddr-1032 and its rated for 1066, so it will definitely be stable at those timings.
Click to expand...

Yes, it is sold as 1066 capable, but at the cost of increased voltage. A system will not pick this up on its own, so the voltage and timings will need to be manually set. Most of those high speed overclocked dominators require 2.1v - 2.2v to be stable, and if you have four dimm slots filled with them, even more power slightly.

Edit ** Side note - Dude, you have a Q9550 running at 4.2 Ghz? That is crazy... I didn't think those chips could handle the FSB required... I'd be interested to know more if you care to share.
 
Originally posted by: ArchAngel777
Originally posted by: TidusZ
your ram is running at ddr-1032 and its rated for 1066, so it will definitely be stable at those timings.
Click to expand...

Yes, it is sold as 1066 capable, but at the cost of increased voltage. A system will not pick this up on its own, so the voltage and timings will need to be manually set. Most of those high speed overclocked dominators require 2.1v - 2.2v to be stable, and if you have four dimm slots filled with them, even more power slightly.

Edit ** Side note - Dude, you have a Q9550 running at 4.2 Ghz? That is crazy... I didn't think those chips could handle the FSB required... I'd be interested to know more if you care to share.
Click to expand...

I got it running stable @ 4.284 without much trouble using the gigabyte-ud3r (same mobo as OP but 1 less pcie-16), ocz hpc (high performance cooling) 1066 ram 2x2gb, and TRUE 120 push/pull and coolermaster high air flow 932 case. Basically really good air cooling and a good overclocking motherboard. I sanded the TRUE and the processor to near mirror finish up to 1500 grit, put 1.392 volts and enabled load line calibration to keep vdroop in check, raised volts on mobo to 1.3 mch, and slight overclocks to the rest (can't recall exactly and can't reboot atm). Put ram to 2.1v, since warrenty expires over 2.15, but its only running ddr2-1008 anyhow, 5-5-5-15. Idles at 35c, loads mid to high sixties with small ffts, stable 12 hours in blend.

I dunno if I just got a very lucky chip, or if my effort I put into cooling has helped, or the specific voltages I put on the northbridge (I basically read a few threads on xtremesystems and found the ideal values for the board according to them). I will say that at 4.3 it wasnt stable after 20 minutes of blend, and I haven't tried going to 1.4 or above to see what the bottleneck is or what I can get, I feel safe at 1.392 24/7 and its bottlenecking my single gtx 280 (712/1458/2664) pretty bad as it is. And ya I got lucky on the gtx 280 ram.
 
Originally posted by: TidusZ
Originally posted by: ArchAngel777
Originally posted by: TidusZ
your ram is running at ddr-1032 and its rated for 1066, so it will definitely be stable at those timings.
Click to expand...

Yes, it is sold as 1066 capable, but at the cost of increased voltage. A system will not pick this up on its own, so the voltage and timings will need to be manually set. Most of those high speed overclocked dominators require 2.1v - 2.2v to be stable, and if you have four dimm slots filled with them, even more power slightly.

Edit ** Side note - Dude, you have a Q9550 running at 4.2 Ghz? That is crazy... I didn't think those chips could handle the FSB required... I'd be interested to know more if you care to share.
Click to expand...

I got it running stable @ 4.284 without much trouble using the gigabyte-ud3r (same mobo as OP but 1 less pcie-16), ocz hpc (high performance cooling) 1066 ram 2x2gb, and TRUE 120 push/pull and coolermaster high air flow 932 case. Basically really good air cooling and a good overclocking motherboard. I sanded the TRUE and the processor to near mirror finish up to 1500 grit, put 1.392 volts and enabled load line calibration to keep vdroop in check, raised volts on mobo to 1.3 mch, and slight overclocks to the rest (can't recall exactly and can't reboot atm). Put ram to 2.1v, since warrenty expires over 2.15, but its only running ddr2-1088 anyhow, 5-5-5-15. Idles at 35c, loads mid to high sixties with small ffts, stable 12 hours in blend.
Click to expand...

I have to hand it to you man... That is very impressive!!! 504Mhz FSB 24/7 on an air cooled Quad! Crazy, I seriously thought that was not possible. I am tempted to pick one up now that I know it is at least capable of it... Thanks for sharing.
 
TidusZ, We have the same case as well. Also, WE DID IT. I am now stable at 3.8, It was the NB and the SB voltage that needed a little push. I will post pics in a few minutes, still testing, and My memory is at 5,5,5,15 BUT. Temps are still sub 60. Going for more.....

Mem timings on 3.8

THE OC

Archangel, you have ALWAYS BEEN so nice and helpful, thanks. You talk about 5:6 timing, but I do not know how to set this to 1:1 on my motherboard. I think my memory is running at 1080????

EDIT: Better pic more information HERE
 
Hey Boglwe, I got my exact bios settings here:
ram spd 2.00D

vcore 1.43125v
cpu termination 1.32v
cpu pll 1.57v
ref auto

mch core 1.32
ref auto
dram ref auto
ich i/o 1.57
ich core 1.2

dram v 2.08
rest auto

the ich voltages probably aren't necessary but they cant hurt much. Here's a pic 4.284

Let me know how your overclock turns out, I wonder if I got a lucky chip or if the ud3 is as awesome as they say it is.

oh and remember to enable load line calibration.
 
wait, great OC, regardless of temps, BUT, Isnt Core Temp the program that reports Quad cores 7 degrees cooler then they actually are? Just a thought, I could be wrong. I am in bed now and will try this tomorrow. At my current build I got my temps up to 72 using realtemp. So, Not sure what else I can do here. What are these chips rated at for highest temp?
 
Originally posted by: boglwe
Archangel, you have ALWAYS BEEN so nice and helpful, thanks. You talk about 5:6 timing, but I do not know how to set this to 1:1 on my motherboard. I think my memory is running at 1080????[/L]
Click to expand...

Every motherboard is slightly different. On my Abit P35 motherboard, you would see the memory speed (say 1080 in this instance) and if you select it and hit enter you are presented with a list of ratios. You are looking for a 1:1 ratio or what works out to be 2x your bus speed in ram. So if you bus is set to 450Mhz, then you would be looking at 900Mhz for ram speed. But, like I mentioned, I don't know for certain where that setting is in your BIOS. But I do know that it does in fact exist. I remember some Gigabytes having a secret option in BIOS to get to the memory times. Like CTRL + F1 or something like that. Not sure if that applies to P45 based Gigabytes, but it did to the 965 and P35 for a while.
 
Originally posted by: boglwe
wait, great OC, regardless of temps, BUT, Isnt Core Temp the program that reports Quad cores 7 degrees cooler then they actually are? Just a thought, I could be wrong. I am in bed now and will try this tomorrow. At my current build I got my temps up to 72 using realtemp. So, Not sure what else I can do here. What are these chips rated at for highest temp?
Click to expand...

Downloaded realcore to see if that's true, here are the results: Core Temp vs Real Temp

Coretemp displays exactly 5c hotter than realtemp consistently. I may have to use realtemp when friends come to lan, in order to grow my epeen 5 cubic celcimeters. Core 3 and 4 at 29celcius idle? I'm gonna need to buy insulation now to stop the condensation, great.
 
Very funny. I will try your OC, BUT, now I have a new issue, and its the same I had with my last gigabyte board OC. The OC is super stable, but the computer will not exit out of sleep mode. It enters sleep mode fine but upon double clicking the mouse the computer will light up , fans running, but then shut down and try again afater 5-10 seconds, Its an eternal loop unless I reset it or power it down. I would really like it to be able to go to sleep mode, but am open for options. I do not think I can try your OC until this is fixed because its an important part of my setup.

ARCHANGEL: There is a selection for 2.00 on the mem but that is what I have selected and the result is what you see 5:6. This is the odd thing. Same thing on my last Gigabyte as well.
 
Originally posted by: boglwe

ARCHANGEL: There is a selection for 2.00 on the mem but that is what I have selected and the result is what you see 5:6. This is the odd thing. Same thing on my last Gigabyte as well.
Click to expand...

I looked through the manual that KIAman posted and I am baffled at how the selection for 2.0:1 would give you a 5:6 ratio. However, Tiduz is running 1:1 right now as he said his ram was running at 1008Mhz, so I know it is possible on your board. What are your other selections besides 2.0?

 
I have mine running @4.0; I think I tried both settings for the RAM and ended up with 2.00D. I think it sets the strap or timings. One worked better than the other for me; I can check it tonite and see where I left it.
 
Originally posted by: dbcooper1
Isn't there a 2.00B as well as 2.00D?
Click to expand...

There are many choices and how many you can see depends on what you have the (G)MCH Frequency Latch set to. Mine is set to 400MHz. System Memory Multiplier is set to 2.00D Dram Timing Selectable is set to Auto. This gets me 1:1 400Mhz

This is on a E7200 EP45-DS3L F10 Bios (8x400MHz)

I have built many computers but all of them were AMD (or Cyrix). This is my first Intel. I've read good things about the board I'm using but the memory ratios are very confusing. It took me about 5 or 6 tries to get 1:1. I was basically just picking one option, then picking the next...

 
TiDus, I have tried your OC and I get blue screens on anything above 3.8, And 3.8 is kinda pushing it as well. I am assuming its NB Sb issue , or mem, I have no idea.

Whats your FSB? Any multiplier change? I can post and boot, but upon starting Prime 95, I go to Blue screen. whats the first thing that can cuase a blue screen?

And yes, Memory set to 2.00D is a 1:1 after some personal research. I do have a new OC at 4000.0 Mhz with an 8.0 multiplier, Will post pics soon.

Also found this manual for the chip. GIves max voltage and what not.

 
my fsb is 504mhz with ram also at 504/1008 1:1. multiplier is at 8.5 default. Not really sure what exactly would cause blue screen aside from simply an unstable overclock. Make sure your ram isn't running too fast, and put it to 2.1 volts if it isn't already, and enable load line calibration if you didn't. Otherwise, not sure what else you could try.
 
It just seems like I have a semi decent chip and you have an amazing chip. I have to put the Vcore up to 1.45 in order to get it somewhat stable and then ofcourse, heat. Your OC is amazing, I would like to see your prime95 deeper in though, if thats possible. I blue screen after about 7 iterations.
 
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