239w ago - We just received a link leading to an AMD-sponsored YouTube channel, showing an HD video how Brian McLachlan [alias chew*] overclocked Phenom II 955 and DDR3 memory. You can see the HD video below.
What caught our attention in the video was the fact that Brian didn't take the usual route of slapping a LN2 pot and pouring Liquid-nitrogen from the word go.
Chew* used AMD Phenom II 955 processor, GigaByte 790FX-based motherboards [MA790FXT-UD5P], Corsair DDR3-1866 memory, ATI Radeon HD 4850 and 4890 graphics cards in single and Crossfire mode. In this video, chew* posted 4515 MHz CPU-Z using an air cooler, 5217 MHz CPU-Z score using Dry Ice and 6405 MHz using Liquid Nitrogen.
Personally, I am not very interested in seeing validation screenshots, even though I understand their point. I was always an stable system overclocker - my CPUs have to pass a 24 hour Linpack run in order to be called stable. Chew published so called "extreme stability" results as well, reaching 4070 MHz on air, 4717 MHz on Dry Ice and 5751 MHz using LN2. Playing a game on 5.7 GHz would be an interesting experience, if there wasn't for continuous need to pour the LN2 into the pot. DDR3 memory was clocked to 1443 MHz using 5-5-5-15 latency, while top...
262w ago - We've seen Phenom II, Deneb overclocked all the way to 6.2GHz. This was not a screenshot boot, we've seen it with our own eyes as chaps from AMD managed to run the Crysis benchmark several times. The machine was stable on almost every run.
AMD was insisting that this was a stock CPU not a cherry picked one, and that similar scores should be expected from retail products. Intel has never managed to get to over 6GHz and we are sure that Intel is doing some catching up.
You naturally need some LN2 to get to such a high scores and it looks that Phenom II might become an overclocker's favorite toy.
This is quite an achievement and with water you will get to 4GHz+, while with a good air cooler you should reach clocks around 4GHz.