Originally Posted by Ghost12
Originally Posted by KyadCK
8350s are just binned better. They'll hit the same OC's on less voltage. List in the OP justifies that.
Not to say 8320s can't match 8350s, it'll just take more to get them there.
Ok i appreciate your opinion thanks. I have been debating the binning thoery in my mind for a while, for that to be conclusive though i feel in my opinion the cross section of cpu`s would have to be tested in exactly the same setting from the skill of the over clocker to the hardware set up even down to the ambient room temp. This will never happen i suppose so the opening page is a decent guide
They don't need a range of ambients at all. Hotter is hotter, for everything.
Otherwise, they are tested in the same settings. But not by overclockers. 8350s are tested to run at 4Ghz, and they have to do it inside a 125w TDP. This is why you get different VID on different chips.
Some chips are more leaky then others, and so put out more heat, but they require less voltage to run, which undoes that heat. Like the chips with 1.3v VID that have a hard time going fast due to insane temps.
Others are very cold, but require more voltage through the CPU in order to stay stable. Like ones with 1.4v VID. They have a hard time going very fast because of the shear voltage required.
And some others, have a balance. They're kinda leaky, but they don't require much voltage, and so everything balances out.
Now, the question becomes how many of those chips can actually do 4.0 inside 125w, and how many can turbo to 4.2 in the same thermal envelope. The ones that do, get branded 8350s. Ones that can't, but can do 3.5 in a 125w TDP get branded 8320s. Ones with a broken module get branded 6300s, and those with 2 broken modules get branded 4300s.
It doesn't end there however, because sometimes there's demand for your lower parts, but everything keeps binning highly. This is what happened to Bulldozer, which is why there was almost no difference between the 8150 and 8120. In this case, they will take some of the CPUs that should have been 8350s, and label them 8320s anyway. Our chips would be one of these. If there is "too much" demand for 6300s, they will even take some 8320s and turn off a module and sell it as that.
That is the process of binning. Whatever tools they use for the job, it's far better then anything we can do, they have to do it in bulk after all. Intel and nVidia do the same thing. Parts that did not make the cut for Tesla can become Quadros, and parts that don't make the cut for Quadros become GeForce (at least for Fermi).
It's not a theory, it's just something companies do to maximize profit out of what they have. Piledriver happens to have been Binned more aggressively then Bulldozer was, that's all.Edited by KyadCK - 3/2/13 at 4:07pm