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Tom's Hardware > Forum > CPU & Components > CPUs > Q6600 -max FSB is now 330 ??

Q6600 -max FSB is now 330 ??

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lemonyx   10-26-2008 at 10:13:01 PM

My first "gaming" PC (see sig) built back in May of this year. The Q6600 would scream at 3.6ghz (400 x 9). Now it won't go over 330, will not boot no matter what voltage I use.

Could it have been damaged by overheating? I did have to use another HS the TRUE and also a HR-03 Gt for the videocard to keep things cool.

Any ideas, I have tried just about everything to get the CPU back up to "speed" but just loafing along at 2.9ghz right now - max. 326 x 9

One stick of ram failed memtest so I RMA'd a set back to Cosair.

------------------------------ Abit IP35 Pro bios 17, Intel Q6600 GO, Thermalright Ultra 120 eXtreme w/Delta fan, Cosair XMS2 4x 1gb, Gigabyte 8800GT 512mb, Thermalright HR-03 GT w'fan, WD 74gb Raptor 10k HD, WD 80gb HD, WD 2x SE16 500gb HD, Lite-on DH*20A4P-08 DVD r/rw, NEC 3550A DVD
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aeiouandxyz   10-26-2008 at 10:39:21 PM
- 0 +

Have you tried overclocking with just two sticks of ram? It's harder to get 4 sticks to run stable than it is to get 2 sticks to run stable.

------------------------------ http://valid.x86-secret.com/cache/banner/430630.png
Asus P5Q Deluxe,
Q6600 @ 3.0 ghz (333x9),
EVGA 8800GTS 320MB stock,
Reply to aeiouandxyz
dagger   10-26-2008 at 11:19:04 PM
- 1 +

It likely has to do with motherboard rather than cpu. Motherboard chipset, when pushed near the edge, as your p35 at 1600mhz fsb, sometimes degrade. The same is unheard of for cpu.

------------------------------ Q6600@3.6ghz, GA-EX38-DS4 motherboard, 8gb 800mhz ddr2 4-3-3-12, 8800GTS(g92)@780mhz, 1TB + 1.5TB hdds, 850watt psu
 Reply to dagger
lemonyx   10-27-2008 at 12:22:16 AM
- 0 +

aeiouandxyz

I've had all four sticks in at 3.6ghz - so no problem there, but only have two in at this moment, as the other two are bring RMA'd

dagger

That's pretty fast for degradation, I've had the MB for about 6 mths now - it was "NIB" and other guy's are still running this same MB OC'd. The std FSB for this MB is 1333

thanks for the reply -


Message edited by lemonyx on 10-27-2008 at 12:43:09 AM
------------------------------ Abit IP35 Pro bios 17, Intel Q6600 GO, Thermalright Ultra 120 eXtreme w/Delta fan, Cosair XMS2 4x 1gb, Gigabyte 8800GT 512mb, Thermalright HR-03 GT w'fan, WD 74gb Raptor 10k HD, WD 80gb HD, WD 2x SE16 500gb HD, Lite-on DH*20A4P-08 DVD r/rw, NEC 3550A DVD
Reply to lemonyx
roadrunner197069   10-27-2008 at 12:59:47 AM
- 0 +

Well you ran it over its rated speed and ran it hot. What did you think was gonna happen?

Also what voltage did you have to run. If you were like alot of noobs and ran 1.5+ vcore, your CPU is on the end of a short life.

Message quoted 1 times
Reply to roadrunner197069
dagger   10-27-2008 at 04:07:03 AM
- 0 +

roadrunner197069 wrote :

Well you ran it over its rated speed and ran it hot. What did you think was gonna happen?

Also what voltage did you have to run. If you were like alot of noobs and ran 1.5+ vcore, your CPU is on the end of a short life.



Different cpus have different voltage tolerances, q6600's happen to be high. Intel's official "recommended" voltage is 1.5v.
http://processorfinder.intel.com/d [...] Spec=SLACR
Most overclockers of not just q6600 but also other cpus routinely set voltage higher than official recommendation of their respective chips. The amount of cpu overvolting needed to achieve similar clocks for other cpus tend to be a lot higher than for q6600, due to their lower voltage tolerance.

In any case, it's far more likely to be due to motherboard chipset or ram, rather than the cpu itself.

------------------------------ Q6600@3.6ghz, GA-EX38-DS4 motherboard, 8gb 800mhz ddr2 4-3-3-12, 8800GTS(g92)@780mhz, 1TB + 1.5TB hdds, 850watt psu
 Reply to dagger
jimmysmitty   10-27-2008 at 04:58:53 AM
- 0 +

Chipset might have friend and is now limiting the FSB. I doubt its the chip TBH. You would have noticed throttling and the such first before it would die.

So you may want to get a new mobo and try that. Or have a friend throw your chip in his CPU and try that OC. If it works its your mobo. If it doesn't work its the CPU. But as I said before, the mobo would probably die before the CPU would.

------------------------------ http://www.steamcalculator.com/76561197970703804/camo_sig.png
 Reply to jimmysmitty
lemonyx   10-27-2008 at 03:28:55 PM
- 0 +

roadrunniy197069

A typical know it all - this CPU never went over 1.36v to get 3.6ghz NB voltage max 1.44v for the 4 sticks of ram

thanks dagger

Reply to lemonyx
zenmaster   10-27-2008 at 03:50:59 PM
- 0 +

What happens if you lower the multi-plier and try to increase the FSB?
This should help indicate if you are hitting a CPU or FSB limit.

As others noted.........
Fewer RAM Sticks....
Higher RAM voltages....

------------------------------ If its good in theory but not in practice,
its not good theory.
 Reply to zenmaster
lemonyx   11-01-2008 at 05:16:11 AM
- 0 +

It's runing @ 400 x 8 stable right now. Just a correct setting for the ram timing is all that was needed. The MB and CPU still have a lot of life and are NOT worn out.

http://i48.photobucket.com/albums/f230/wanareef/400x8.jpg

Reply to lemonyx
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