I7 20 C0 or D0?

[MIKAY]

Sorry if this has been asked before, cant seem to find anything solid. is it worth selling the the c0 and buying a d0, not doing heavy overclocking but is it true they run cooler?

 

[Greebo]

Yes they run cooler.

Worth swapping? No, only if your a heavy overclocker and even then debatable as to whether the £30+ to swap is worth is for another 200Mhz.

 

[Infernum]

How far have you overclocked your C0 to? I had one and it wouldn't OC well, wouldnt get to 3.6 without silly settings. So I swapped for the D0, now it just sits there at 4ghz and thats enough for me.

 

[MIKAY]

How far have you overclocked your C0 to? I had one and it wouldn't OC well, wouldnt get to 3.6 without silly settings. So I swapped for the D0, now it just sits there at 4ghz and thats enough for me.

At present at 3.6ghz 1.3v ish maybe a little lower volts. Im happy at 3.6ghz but am switching to a small form factor case where there will be very little cooling. Was thinking with to d0 could get 3.6 with 1.2ish volts etc

 

[555BUK]

In general I would say that it is NOT worth upgrading from a C0 to a D0. On avaerage you gain about 200MHz with a D0 chip, but taht is not guarenteed. If you were buying new it would be a no-brainer, but you will not even notice the difference as a C0 upgrade option.

Here are my C0 results with air cooling and the cheapest X58 mobo I could find. I don't want a D0.

 

[JonJ678]

Yes they run cooler.

Something tells me contradicting Greebo is going to be a bad call. However, I believe you to be wrong on this note sir. Couple of references, best link I could find for some reason http://www.xtremesystems.org/forums/showthread.php?p=3779420

The D0 runs at lower voltage but draws more current. Reported figures are around 20W more at the wall, so it's drawing more current. This likely does bad things for electron migration, and clearly doesn't help temperatures, but otherwise matters little.

edit: Just in case, Power = Voltage x Current. Damned crude equation, but gets the point across and remains pretty valid when using rms values for varying quantities. Reduce voltage, but raise current, and you can end up with more power used and so more heat generated.

 

[MIKAY]

Something tells me contradicting Greebo is going to be a bad call. However, I believe you to be wrong on this note sir. Couple of references, best link I could find for some reason http://www.xtremesystems.org/forums/showthread.php?p=3779420

The D0 runs at lower voltage but draws more current. Reported figures are around 20W more at the wall, so it's drawing more current. This likely does bad things for electron migration, and clearly doesn't help temperatures, but otherwise matters little.

edit: Just in case, Power = Voltage x Current. Damned crude equation, but gets the point across and remains pretty valid when using rms values for varying quantities. Reduce voltage, but raise current, and you can end up with more power used and so more heat generated.

thanks for that reply mate, ill think ill stick with the c0. The whole point of my newer build is for it to be cooler more energy effient as will be running morealess 24/7 and as the review points out is actually using more for the d0. thanks

 

[Greebo]

Something tells me contradicting Greebo is going to be a bad call. .

Is my rep on here that bad??????

No in this case I will admit my quick response was indeed wrong and based on the incorrect assumption that lower voltage = lower heat.

 

[555BUK]

From the above, can it also be assumed that C0 chips can "safely handle" more voltage than D0 chips.

 

[JonJ678]

That might not be a wise assumption, but it would make sense to me. Xtreme systems has a thread called i7 graveyard which seems to suggest they're fairly resilient.

Cheers Greebo

 

[Ninja Please!]

My c0/c1 is a pretty good chip itself. 3.875 stable at 1.19 volts. I have yet to see any other i7s at the clock with volts that low. And yes before you ask it is prime stable and if you want the screenies to prove it they are already on here if you do a search.

My point to that was, a good c0 chip is better than a bad d0 chip. I read a thread on here where someone couldn't get his d0 to overclock very well. Granted the vast majority probably have no problems at all.

 

[D D Danneh]

My c0/c1 is a pretty good chip itself. 3.875 stable at 1.19 volts. I have yet to see any other i7s at the clock with volts that low. And yes before you ask it is prime stable and if you want the screenies to prove it they are already on here if you do a search.

My point to that was, a good c0 chip is better than a bad d0 chip. I read a thread on here where someone couldn't get his d0 to overclock very well. Granted the vast majority probably have no problems at all.

Wow, that is a very nice C0 chip. Better than my D0. 4GHz @ 1.2v

That's what I said to someone else asking if it was worth changing. You could end up swapping to a D0 chip worse than a C0 chip. Due to the CPU's capabilities being random, there's no guarantee D0 is better than C0. Averages might suggest it is, but there's bound to be ones that aren't. For every above average result, there's some below average too.

 

[Ninja Please!]

Wow, that is a very nice C0 chip. Better than my D0. 4GHz @ 1.2v

That's what I said to someone else asking if it was worth changing. You could end up swapping to a D0 chip worse than a C0 chip. Due to the CPU's capabilities being random, there's no guarantee D0 is better than C0. Averages might suggest it is, but there's bound to be ones that aren't. For every above average result, there's some below average too.

Hey the 4.0 @ 1.2 is the best D0 I have seen yet! I meant to say that mine is the lowest vcore to clock ratio out of the C0's, I should have specified that...
But you have a nice D0 there!