- Joined
- Apr 24, 2007
- Thread Starter
- #21
4.2GHz results up.
Multi increased to 21x, Vcore increased from 1.184/1.232v to 1.200v/1.264v.
Multi increased to 21x, Vcore increased from 1.184/1.232v to 1.200v/1.264v.
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Again, appreciate the testing! It is the 4.4ghz to 4.6hz that will have biggest difference, so will be most interesting.
I really like how you are doing the test though, you can look at what fan speed you like (noise tolerance) and make an informed choice. Dont know why this has not been done before, very informative.
And even if someone does not get as good chip in low vcore requirment, they can extrapolate to higher mhz/vcore and get a rough idea. Also, even though chips can vary 5-10C at same load, the relationship between true and water will still be ~same.
BTW, first time I ever suggested this, but this should be stickied, will make a great reference post.
baditude_df, very well done man!
As a matter of fact, this is good enough for me to throw a little glue on this thread for you, to make it easier to find.
baditude_df said:4.2 GHz is definitely the maximum frequency where you can expect any measure of acceptable cooling and 24/7 stability with HT enabled (AIR or H2O). If you want acceptable noise level to go along with that, the 4.0GHz level is where you need to be (AIR or H2O).
There are many people with posted 8hr+ prime stable 4.3, 4.4, even up to 4.6ghz on water with reasonable temps, many using reasonably quiet fans like your 1500rpms. I am surprised you had problems with stability at 4.4 on water, given your cpu. But I think you illustrate why many have upgraded their water systems with these chips. Little surprised at your load temps given you are using external rad and your fan speed. Did you measure water temps, just trying to see where your cpu is different than mine, detla air to water or delta cpu to water. My intake ambient 23C, water temp 27.7C, delta cpu to water 40c using avg temps, 41-42C using max temps, at 4.4ghz, 1.36-1.375 cpuz idle, 1.344cpuz load. When ambients 24.5C on some runs, increase everything by 1.5C.