Q6600 and batch.

Hello! Well I'm going to buy a Q6600 G0. But I read in some forums that there something called "batch" that influences in the OC's capacity for your CPU. I dont know very well what exactly the batch is, and I would really know how can I know the batch of the CPU that I will buy.

I read that there are a lot of batchs (L739B250, L739B770, L737B162, etc..).
Which ones are the best OCeable? In the web where I was thinking to buy the Q6600, it seems that the batch is TR80562Q6600 is this cool, or perhaps I should look for another one?

Thanks you very much guys if can help me to get this decision.

Yup, you get good and bad silicone where the bad tops out before the good. The margin fortunately isn't very big and can only be viewed from absolute maximum thresholds which you'll run into when you try and break the world record or something more benign. Same as above, G0 is the way to go and avoid the Bx stepping.

The batch is a mark of which fab and on what date the chip was made, and there are some chips that yield better OC'ing when you start tweaking voltages. Chip A from FAB-A(JunXX) can operate better at 0.5V above design voltage than Chip B from FAB-B(Sepxx) which tops out at 0.4V above design voltage, would be a crude example (don't use the values as something tangible).

Stepping is the thing you're looking for.

What's your target overclock?? If it's 3.4~3.6, I'd strongly suggest not to waste time/effort/brain cycles thinking about where a given G0 chip was made.

Hehe.. I'd be damned if I could decode batch code's so no, the t would not refer to FAB-T - I used a very daft example. Don't break your head over the batch, it's the least of your worries. You can OC a G0 Q6600 considerably before you start playing with Vcore to maximum values and at that point I think you really wasting your money with the threat of actually crippling the cpu. And to locate the 'ideal' batch will take some time and then you have to wonder just how much you actually gained? 0.04V vs 0.035V? It's not worth it in my eyes.

OC'ing starts off with FSB adjustments, then some RAM adjustments, then some more FSB with minor voltage changes and then again RAM. After that you're going into difficult territory.

Just get something with a pack date in 2008. Batch numbers are stuff like L737 and the like. The other thing is a part number.

Your max OC depends on more than just the chip. Most of the GOs will require water or phase cooling to get in the 3.8 - 4.0 ghz range with stability at 100% and safe temps.

3.7-3.8 GHz max 24/7.