Ryan
join:2001-03-03
Attleboro, MA
 ·Comcast
edit:
March 28th, @03:03PM
| [OC] Q6600 Help
I should be getting my 6600 next week and will be overclocking it to 3.0 ghz. I am a little confused about the ratios such as 1:1 and 5:6 and what that actually represents. What would be the best way to overclock the q6600 to 3.0 ghz with ddr2 800 memory? Should i do 9x333 and leave the memory at 667 or set the dram multiplier at 2.4 and do 9x333? Just not sure what would actually give me the best performance. |
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
 ·Verizon FIOS
·Comcast Workplace
 ·DSL EXTREME
| Ideally, you want a 1:1 ratio between FSB and memory. So yes, you'd do a 9x333 multiplier, so run the RAM at 667.
There is a modest increase in performance with a 1:1 ratio. The newer memory controllers generally do a good job of hiding the latency penalties.
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hsindogg
Premium
join:2002-06-21
Baltimore, MD
clubs: | Go for 3.2Ghz!
8x400 should be easily attainable with proper air cooling.
Slap in some DDR2-800 sticks and you're good to go at 1:1 FSB:RAM speed. |
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Ryan
join:2001-03-03
Attleboro, MA
·Comcast
edit:
March 28th, @04:24PM
| said by hsindogg  :Go for 3.2Ghz! 8x400 should be easily attainable with proper air cooling. Slap in some DDR2-800 sticks and you're good to go at 1:1 FSB:RAM speed. Was just about to ask that.. Good might shoot for that then since I did get a after market cooler. Anyone know the default voltage values for the g0 stepping? I keep finding the range, but not the default.
Also I shouldnt have to change the memory's voltage correct? The specs on newegg for the g.skill 800 i bought only goes up to 1.9 |
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hsindogg
Premium
join:2002-06-21
Baltimore, MD
clubs:
·Cavalier Telephone
| It's a range because each chip has a different value, I guess based on the quality of the chip to run at the stock speed.
Seems most GO's are in the low 1.2v's.
Google Q6600 VID and there are a few threads with people posting their VID's. |
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deblin
Dark Side of the Moon
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join:2001-09-01
Middletown, DE
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| reply to hsindogg
I wish you luck! I got a dud Q6600, which won't do 400x8. The only way I can get it stable over 3GHz is to run it at 356x9. I seem to be in the minority, though, so you'll likely be able to do 400x8 no problem.
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hsindogg
Premium
join:2002-06-21
Baltimore, MD
clubs: | What's your stepping/pack date? |
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE | It is a G0 SLACR, not sure of the pack date...
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hsindogg
Premium
join:2002-06-21
Baltimore, MD
clubs: | Sorry to hijack the thread, but what are your other components....have you tried for help? |
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deblin
Dark Side of the Moon
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Middletown, DE
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| said by hsindogg :Sorry to hijack the thread, but what are your other components....have you tried for help? Yep, I've had a couple of threads about it. It's definitely not the MB, because the MB does 400+ FSB with an X6800 (actually, an engineering sample X6900). The RAM I had in there was 2x1 DDR2-800 G.Skill stuff that supposedly would do 1066 with 2.1v. But, recently I built a 2nd box and bought new RAM (PC2-8000) and even with that it doesn't work stably at 400x8. I run mprime (prime95 for FreeBSD) and it gets rounding errors unless I drop the FSB. I haven't tried finding the point where it craps out between 9x356 and 8x400, since I'm relatively happy with 3.2 GHz.
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deblin
Dark Side of the Moon
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join:2001-09-01
Middletown, DE
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| reply to hsindogg
Here are some of the threads:
»[Unstable] mprime/prime95 rounding error
»[OC] Hitting a wall: CPU or RAM?
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Ryan
join:2001-03-03
Attleboro, MA
·Comcast
edit:
April 5th, @05:46PM
| reply to Ryan
Okay so I finally got my system up and running and now working on trying to overclock it. I havent overclocked a system in a while so I am following this guide at »www.tomshardware.com/forum/24000···ls-guide
Question though. It says I should manually enter in the pcie frequency and pci sync control or it may raise with my overclock. I have a GIGABYTE GA-P35-DS3R and I see the option to set the pci frequency, but there is no option for sync control.  Should I not worry about changing the sync control or is it hidden in the bios some where? |
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Ryan
join:2001-03-03
Attleboro, MA | After researching for hours I finally came across some info that stated that most modern overclock capable boards that dont have a pci clock sync option that means its already locked at 33 and is not changeable. |
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ryang
Premium
join:2001-04-01
Chicago, IL | reply to Ryan
»www.hardforum.com/showthread.php?t=1169366
Got me going at 3Ghz for now on my 965p DQ6 |
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Ryan
join:2001-03-03
Attleboro, MA
·Comcast
| reply to Ryan
Well been changing voltages the past two days now and I think I am now running stable @3.2ghz with 1.288 volts for about 12 hours now (gonna let it keep running) The last voltage i tried was 1.275 so I might try the voltage in between which is 1.282.
Question though, the temps of core 1&2 have been around 58-60 while 3&4 are around 52-55 (about an hour after prime95 on long fft) are these temps too high? Little concerned it just seems high for 3.2ghz and I am wondering if temperature wise it would be better just to settle with 3 ghz. |
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Ryan
join:2001-03-03
Attleboro, MA | reply to Ryan
One other question. You think the large fft test is sufficient enough testing wise? |
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Edge1
Workin' ta Live
join:2006-03-01
·Verizon Online DSL
edit:
April 15th, @09:34AM
| reply to Ryan
Could someone show me where there is real-world evidence that running the RAM divider at 1:1 is better than, say, 4:5? I've heard the 1:1 thing plenty of times, and its how I run my E6300 (2.8GHz, 400FSB, 800MHz RAM), although I've built other machines that are not running 1:1 and they're rock solid. If Ryan keeps the 9X multi and runs a 4:5 divider, I think he gets 833MHz RAM speed. Not sure how this would be worse than 1:1 667 or 1:1 800 (with lowered multi). other than his chip with the lowered multi would be doing 3.2GHz, which is obviously a bit faster.
A 5:6 divider would give him 3.0GHz and 800MHz RAM speed.
Also, Ryan, on the temp thing, I forget what cooling setup you have. Do you have aftermarket air cooling? My E6300 pushed slightly over 60 in Orthos a few times. Nothing I do real-world pushes it there though. That's getting uncomfortably warm but then again I think thermal shutdown is around 85C. You should be fine, but less heat would be better. Keeping it at 3.0 might be a nice compromise. I backed my E6300 down from 3.0 for the same reason. |
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