Thanks guys, I have checked the BIOS thoroughly and there is no setting for 'Cool N Quiet' mode. I have also enabled 'Top Performance'. I'veplayed around with the multiplier etc and managed to get it to a whopping 920mhz (not). Even from the POST screen it tells me my CPU is 3400+ and the clock frequency is running at 200mhz. Does anyone know what the correct settings should be because it's set like this automatically. Thanks again!

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My Athlon 64 3500+ standard settings were: Multiplier = 11 FSB = 200 HTT = x 5 So i guess yours is supposed to be 10 x 200? Gigabyte K8NSNXP-939 Athlon 64 3500+ Dual - Corsair TwinX CMX512-3200XL Gecube X800 XT Platinum Seagate 200 Gig Coolermaster Wavemaster Silver

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I can't even increase the Multiplier beyond 6.5 before the computer freezes. I've tried tweaking the FSB and the muliplier but to no avail. Also, I don't like the idea of the BIOS giving me warning messages saying my CPU is over-clocked even though it is running at 900mhz!!! It's really starting to get to me. The Gigabyte support site is a complete joke. You have to register every little detail from the Motherboard, plus they don't even have a telephone support line, just an e-mail system which is unsatisfying to say the least. I am running out of ideas fast. Just to confirm, there is nothing about 'cool 'n quiet' in the BIOS. Thanks for the help guys. Hopefully we'll get there soon!

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I have just ran CPU-Z and it tells me the following: CPU Name: AMD Athlon 64 3400+ Code Name: Clawhammer Brand ID: 4 Package: Socket 754 Technology: 0.13 Voltage: 1.152v Core Speed 803.9 mhz Muliplier: x4.0 HTT: 201.0 mhz Level 2 Cache: 1024KBytes Is the voltage perhaps too low?

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yes it is. that indicates cool n quiet put it there. Can you manually set it to default?

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My gigabyte motherboard ( k8nsnxp-939 ) has no option for cool and quite either but i have been told that it is still activated. It does have an option for thermal throttling but i was told this is different and is gigabytes baby not AMD... go figure.. Sounds like a heat problem is tripping somthing? Gigabyte K8NSNXP-939 @ 2450 Athlon 64 3500+ Dual - Corsair TwinX CMX512-3200XL Gecube X800 XT Platinum Seagate 200 Gig Coolermaster Wavemaster Silver

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It's strange that you're not able to disable Cool'n'Quiet. Check your manual if it's possible to do it by jumper on the board. And run some cpu intensive benchmark and check the results with others comparable to your system. If they fit then the cpu will run at normal speed if needed and you don't have to worry!

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Make sure Power Options (in control panel) does not have MINIMAL as the power scheme because this would also activate Cool'n'Quiet (it does on my AMD 64 3000+) AMD 64 3000+ 1.8ghz @ 2.025ghz 512mb PC3200 BFG 256mb FX5500 O'C 400w PSU

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Thanks for the reply guys. Now an update. I have managed to get the CPU running near it's proper speed. I had to up the voltage to 1.5v (normal) using Gigabyte's tweaking tool 'EasyTune 4'. Still, the system will reboot or freeze if I try and run a benchmark. After eventually speaking to someone in Gigabyte's 'extremely poor' support department, he concluded that the board was faulty and needs replacing. Although I can change settings from Windows, BIOS does not register ANY changes. To disable Cool N' Quiet, I had to turn off the 'Auto' setting for the multiplier, which I did. Even still it would not move over 803mhz. I am sending the board back for a refund. I have now bought a MSI KT8 neo, which I've heard brilliant reviews about (www.tomshardware.com). Thanks for all your help guys. Turns out the board is faulty then!

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Here's something interesting I've just found. In the Device Manager, when I click the 'plus' under 'processors', there's a yellow explanation mark telling me Windows could not load the device driver for this hardware (code 39). What could this be??? Thanks

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Hi Looks like you are not the only one with this problem! ALso tried a bios upgrade, still no change. suppose ill have to be contacting Gigabyte as well.

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I have same problem with an MSI Motherboard and an AMD64 3400 running at 800 MHZ. (MB set at fsb 200 at 11x)I Emailed tech services at AMD and they said it was cool n'quiet causing chip to ease off if not under load. However I have switched it off in bios and Benchmarks from both Sisoft Sandra and Dr Hardware show its performance as only 800 Mhz so have emailed them again. A couple of weeks ago I read in Micromart that there were a lot of Duff oem chips on the market, mine is an oem chip!

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