In detail you should be able to run Prime 95 FFT's for at Least 8 hours, Blend test for 12.
For fun you can run memtest86+ for 12 hours to see if your memory is good too...that is if you pass a FFT but fail Blend.
Woah, I read the OC sticked guide and it didn't say anything about running blend tests. Can you provide more detail?
I've got my memory at 1:1 ratio which actually underclocks it a bit. Should I be worried about it being stable?
Interesting. Upon closer look, there isn't any reference to blend test, unless I missed it...I'll need to talk to graysky on this one.
Basically, blend test is to stress test your ram. If an error appears, it's most likely due to the ram, however it could also be due to the motherboard. Then you would have to change the settings around to get it stable. Also, an error can appear due to cpu instability, so that's why you want to lower the cpu multiplier by one or more and set the vcore to something you know is stable on (ex: 9x400 = 3.6GHz ---> 8x400 = 3.2GHz stable vcore at 1.4V). That way you can eliminate some variables.
Then you run blend test for a recommended 12hours, more the better. If the specified ram setting is 4-4-4-12 800MHz at 2.1v and you want to use those settings, it's usually rock stable so their is no point in stress testing, although in my case it went wrong. Anyways, you change the ram settings around to your liking, the test away. If an error appears and the fsb is lower than 350MHz, it's probably due to your ram. If you haven't touched your Mobo voltages and your fsb is greater than 350MHz, it could be NB, SB, fsb, or ram that's causing the issues. You'll have to pin point it yourself.
If you haven't experienced any instabilities, you're probably fine.
Okay. So far I've only ran small FFT's. I can get a failure in 3 ways:
1. Error (I've always assumed it's the processor.
2. Crash (again I assume processor)
3. TM2 (Thermal Monitoring) kicks in. This lowers the multiplier to 6x when the "CPU gets too hot." Seems to kick in after 65C. Not sure why since the chip is rated higher than that, but I want to stay under 65C anyway.
My memory specs a 2.2v (so I set the mobo to +4). At 1:1 ratio, it's only at 711mhz so I figure it should be okay....