... When will they make Core 2 Celeron?
I would hope for features like:
Single core, but with core architecture.
1MB L2
All the SSE instructions.
Execute Disable Bit.
I think I know why the Celeron OCs so much, its due to the fact that its not very complex. Ocing will produce less heat than a normal Prescott OC.
I believe Celerons(or at least the equivalent in the Core family) are in the works. From what I have heard through the grape vine(I guarantee no accuracy as this is all word of mouth):
They will be dual core and single core(to compete with the dual core Semprons that are coming out)
They will be based off both Conroe and Allendale cores.
The Conroe based Celerons will likely have 1MB L2 Cache.
The Allendale based Celerons will most likely have 512KB L2 Cache.
They will have all the SSE Instructions enabled(this has always been true with all celerons to my knowledge)
The Celerons based off the Allendale core will most likely not have the Execute Disable Bit, only some based off the Conroe core will.
They will run on the same old 533MHz FSB, but some of the dual-core models might move up to 800MHz.
The main reasons Celerons overclock so well is because of their high multipliers and their low FSB. The Celeron D that I use to overclock is the 3.2GHz model. It has a 133MHz FSB and a 24 multiplier. That means I just have to raise it to 200MHz FSB to get 4.8GHz, which is pretty easy for most motherboards. Though the problem with that speed is that you really have to give them some voltage to maintain stability, though it is possible on air cooling(mine handles 3.6GHz on a stock Intel cooler), while a speed like that would be unheard of on air cooling from a full Pentium 4/D. However, they do get rather toasty at that speed/voltage, which is where the next trick comes in. Since they have a quarter of the L2 cache as their bigger parents they run cooler, which helps a lot.
I would love to get my hands on one of these 3.6GHz models. A 27 multiplier means that at a 200Mhz FSB that is 5.4GHz! Though that really might not be attainable on air. So the 3.6GHz model might not be as good since these processors really suffer from lower FSB speeds, even if the clock of the processor is actually higher.
The absolute best part about them is that they are extremely cheap. My first overclock was on a Celeron, which is maybe why I am partial to them. They are a great place to start for beginners that really don't want to risk a $300+ processor doing something they have never done before.
Though the Celeron D 360 is already $70, and the Pentium D 805(another processor I love to overclock) is only $75. So the higher end Celeron Ds are rarely a good buy unless I get a super good deal on them.