Help with C0 and D0

[pinki104]

Hey, thanks for checking this thread because i am pretty lost at the moment, I have been checking the members market everyday to look for an i7 920 and i watched a 920 d0 sell a little while ago for £180 but today i watched a c0 sell for £120, can anybody tell me what the difference is and any other details i may need to know thanks

 

[setter]

The DO's are a newer revision, they generally require less voltage for higher overclocks, and tend to run cooler than the CO stepping chips.

 

[liquidex]

As what setter said, d0s clock higher normally with less volts needed. Depends how keen you are on overclocking and what price premium you want to put on that.

 

[bulldog147]

+1 agreed with setter as the C0 ran very hot and never get over 4Ghz easy but the D0 is much easy to get into 4Ghz or even more and it less hotter than the C0 chipset.

But, if you are plan not going to overclock it, then the C0 would be fine with your cheaper budget, otherwise get the D0 stepping if you want to overclock it in future.

 

[Geckovich]

The d0s are also a touch faster.

http://www.tomshardware.com/reviews/i7-c0-d0,2386.html

 

[pinki104]

thanks for all the help, ill wait for a d0 to pop up on the market then.

 

[Banzai_Joe]

FWIW....if a D0 sells at £180, thats only £20 cheaper than brand new. Do you not think its worth the extra £20 to have an unused cpu?

 

[JonJ678]

120 for a C0 is an excellent deal.

Generally speaking,
C0 chips run cooler at a given voltage than D0 chips
D0 chips run at higher MHz for a given voltage than C0

This generally means that for overclocking you want a D0, but for use at stock you'd want a C0 chip.. C0 chips are perceived as hugely inferior as they struggle to make it to 4ghz, whereas D0 ones struggle to make it to 4.2. Fortunately this means they sell pretty cheaply, in your example the D0 is not worth even close to a 50% price increase over the C0.

 

[JeffyB]

If you don't plan on overclocking or just want a mild clock increase the c0 is fantastic value. There is very little day to day use and gaming performance increase on a 920 from about 3.6/3.7ghz anyway.

 

[easyrider]

I have owned Both and clocked both the C0/C1 and a D0 920 both in the last week.

If you are on a budget and you can get a C0 for 120 then buy it.

I bought my C0 for 100 quid and I see no reason why it just wasn't snapped up.

It did 3.6ghz easily but 4ghz needed a big boost in vcore so not viable 24/7

However there is a lot of scare mongering with the C0's and tbh they are no different to D0's

The only major difference is that you will not use a C0/C1 chip at 4ghz for everyday use.

In the grand scheme of things...who cares... @ 3.2-3.6 Ghz a C0 i7 920 @ £120 is staggering bang for buck.

I only got rid of my C0 as I was made an offer on it and 15 quid more from the sale got me a D0 so why not.

If it hadn't I would still be running my C0 @ 3.6ghz 24/7 @ 1.3v easily manageable on Air

On purchasing the C0 at the start I new the limitations, and I love overclocking, but these things are so fast a stock 920 @ 2.66ghz wipes the floor with a Phenom II running at 4ghz

get me?

 

[Justintime]

Was lucky with my C0 that it didn't need much volts to hit 4GHz, my D0 is much better and does 4.4Ghz with about the same voltage.

 

[easyrider]

Was lucky with my C0 that it didn't need much volts to hit 4GHz, my D0 is much better and does 4.4Ghz with about the same voltage.

For the most part, D0s overclock higher and at lower voltages than c0 chips, due to refinements in the fabrication process. Late c0 chips benefitted from the same refinements, and random other batches hit 4.0 ghz at really low volts

For the most part the 4ghz is psychological to the user.