Like many of the thousand-dollar, high-end processors of late, the Core 2 Extreme X6800 has an unlocked multiplier, so overclocking this beast is simply a matter of turning up that value in the BIOSeven on an Intel motherboard. With very little effort, I had the X6800 running at 3.46GHz on a 1066MHz bus. This was with air coolinga Zalman CNPS9500 LED. That's very good air cooling, yes, but nothing terribly exotic.
I had to raise the voltage from the stock 1.2V to 1.375V in order to get it to be completely stable, but at those settings, the CPU ran a pair of Prime95 torture tests for a good while without throwing any errors. With the cooler fan running at its top speed, the CPU leveled out at about 70°C while running those tests.
I tried to coax the X6800 into running at the next multiplier up the ladder, for a top speed of 3.73GHz, but it wouldn't quite go there. Even with 1.45V flowing into it, the X6800 would POST but wouldn't boot into Windows. I suspect this CPU could go well past 3.46GHz with some bus overclocking, but I haven't tried it yet. Even at "only" 3.46GHz, performance was astounding.
|Friday night topic: quadcopters!||7|
|The TR Podcast video 173: Torquing the Titan||0|
|Report: AMD R&D spending falls to near-10-year low||8|
|Deal of the week: Ultra-wide IPS for $750, 16GB DDR4-2666 for $190, plus more||38|
|Broadwell Xeon D lands on Mini-ITX boards||30|
|Half-Life 2: Update mod adds modern polish to old classic||49|
|The TR Podcast is live, so come ask us stuff!||1|
|AMD shows off DirectX 12 performance with new 3DMark benchmark||74|
|Intel and Micron sampling 3D NAND based on floating gates||27|