Q6600 owners... what is your VID?

graysky · 27-07-2007, 11:21 PM

If you own a Q6600, please reply with your VID and the stepping of your chip. The VID can be found using coretemp. If you're using vista, coretemp will not display the stepping in some cases, so you can use CPU-Z (it's listed under "revision") to get the stepping.

Here is a shot of mine for reference:

If all else fails, look on the box your q6600 came in; the last 5 letters after the Q6600 in the production code will tell you the stepping. "SLACR" means it's a G0 while "SL9UM" means it's an older B3. Here an example shot taken by XtremeTiramisu to give you an idea:

So, I have a B3 w/ a VID of 1.2875v

EDIT: Here are the data as of 23-Sep-2007 at 7:30 AM based on people's replies to my VID thread here and elsewhere; just as a reminder, please do not post your VID from here on out as I won't be updating the data sets:

*Histograms generated with SBHisto

Total replies: 208
102 replies so far for B3 stepping Q6600s:
(VID: # of replies)
1.1625: 3
1.2125: 1
1.2250: 1
1.2375: 1
1.2500: 5
1.2625: 2
1.2750: 13
1.2800: 1
1.2850: 1
1.2875: 12
1.3000: 14
1.3100: 1
1.3125: 15
1.3200: 1
1.3250: 31

158 replies so far for G0 stepping Q6600s:
(VID: # of replies)
1.1125: 1
1.1520: 1
1.1625: 5
1.2000: 5
1.2125: 9
1.2150: 1
1.2200: 1
1.2250: 8
1.2375: 10
1.2500: 16
1.2525: 1
1.2600: 1
1.2625: 17
1.2650: 1
1.2700: 1
1.2750: 25
1.2850: 1
1.2875: 23
1.3000: 17
1.3125: 10
1.3250: 5

Phil_P · 28-07-2007, 08:05 PM

fat jez · 28-07-2007, 08:13 PM

According to Coretemp, mine is set to 1.2625V, B3 stepping.

Cheers,
Stephen

Phil_P · 28-07-2007, 08:15 PM

Originally Posted by fat jez

According to Speedfan, mine is set to 1.18V.

Cheers,
Stephen

You need to read it from CoreTemp. See the screenshot in the first post!

VID is the default voltage of the chip - it's different on each chip.

fat jez · 28-07-2007, 08:21 PM

Originally Posted by Phil_P

You need to read it from CoreTemp. See the screenshot in the first post!

I know, but as CoreTemp doesn't work with the 64-bit version of Vista, that was the next best thing.

Cheers,
Stephen

Pyr0 · 28-07-2007, 08:29 PM

it works in vista 64 if u disable driver signing either temporarily (using F8 options at boot) or permanently:

In Vista x64 find the cmd.exe (<vista drive>:\Windows\System32\cmd.exe), right click on it and select "Run as Administrator"

In the box that opens type

Code:

bcdedit -set loadoptions DDISABLE_INTEGRITY_CHECKS

Press enter and reboot...

If needed, the entry can be easily removed with the command:

Code:

bcdedit -deletevalue loadoptions

Phil_P · 28-07-2007, 08:43 PM

Originally Posted by Phil_P

Here's some vid data for you (vid can range from 1.10 to 1.3725v for Q6600 CPUs):

Retail G0 steppings:

vid = 1.2625v
http://www.xtremesystems.org/forums/...3&postcount=72

vid = 1.2625v
http://www.xtremesystems.org/forums/...0&postcount=98

And here's one at 1.2750v from the same batch as above:
http://www.xtremesystems.org/forums/...9&postcount=56

vid = 1.2750v
http://www.xtremesystems.org/forums/...&postcount=283

vid = 1.3125v
http://www.xtremesystems.org/forums/...&postcount=272

vid = 1.3125v
http://www.xtremesystems.org/forums/...&postcount=250

And some recent B3 steppings:

vid = 1.2625v
http://www.xtremesystems.org/forums/...&postcount=261

vid = 1.2750v
http://www.xtremesystems.org/forums/...2&postcount=62

vid = 1.2875v
Q6600 owners... what is your VID?

vid = 1.3125v
http://www.xtremesystems.org/forums/...&postcount=148

^^ There you are, in 10 minutes searching, I've found G0 (6 of) and recent B3 (4 of) steppings with exactly the same range of default vcores. Even the highest vcores are giving good overclocks. I don't see anything to differentiate G0 from the current B3's.

Clunk · 28-07-2007, 09:05 PM

Originally Posted by Phil_P

^^ There you are, in 10 minutes searching, I've found G0 (6 of) and recent B3 (4 of) steppings with exactly the same range of default vcores. Even the highest vcores are giving good overclocks. I don't see anything to differentiate G0 from the current B3's.

Not much point in doing all the work, its posted on a bazillion forums.

Supershanks · 28-07-2007, 09:15 PM

Not much point in doing all the work, its posted on a bazillion forums.

as usual

graysky · 29-07-2007, 11:20 AM

@Clunk - of course I did... I wanna get as much data as I can. I have been compiling all the replies and will post it soon... I never did understand why that pisses you off.

bwgames · 29-07-2007, 12:23 PM

Can someone explain what the VID is?

I'm guessing its the default input voltage for that specific CPU, and that the G0 steppings have a lower VID (and probably some of the later B3s), which should equal being able to push them higher?

graysky · 29-07-2007, 12:29 PM

@bwgames - that's the theory at the moment. Several people with several g0 chips have found it to be true (i.e. all other factors are the same, the one w/ the lower VID ran at a higher o/c or at the same o/c as the other chip with the higher VID at a lower vcore).

graysky · 29-07-2007, 05:28 PM

Just updated the first post of the thread with the data collected. Have a look!

Supershanks · 29-07-2007, 05:51 PM

i.e. all other factors are the same, the one w/ the lower VID ran at a higher o/c or at the same o/c as the other chip with the higher VID at a lower vcore

I'm not sure hat you are trying to prove. Collecting data with just the vid is akin to trainspotting you are unable with the data to prove any correlation to better/worse overclocking.

There is nothing different or new in different vids, remember the same arguments been stated with the various amd 939 cpus some years ago.

graysky · 06-08-2007, 07:26 PM

You may have a point SS. I don't quite know what to make of this whole lower VID = higher o/c potential thing. My chip for example, is a B3 stepping Q6600 w/ a reported VID of 1.2875V (coretemp), yet I can run 9x266 (stock) which is stable to 2x orthos for over 8 hours (I stopped it after 8 hours) @ 1.1375V in the BIOS which is 1.040V in CPU-Z under load. I can also run 9x327 @ 1.2275V in the BIOS or 1.208V in CPU-Z under load or a full 9x333 @ 1.2625V in the BIOS or 1.232 V in CPU-Z.

My point is that all these vcore values are under the VID reported in coretemp. In my case, the VID reported in coretemp doesn't seem to mean anything given that I can run my system up to a 25 % o/c well under this voltage.

Questions:

-What does the coretemp VID mean if anything?
-When comparing two identical stepping chips, does the one with the lower VID equate to anything meaningful?

Phil_P · 06-08-2007, 07:35 PM

Originally Posted by graysky

Questions:

-What does the coretemp VID mean if anything?
-When comparing two identical stepping chips, does the one with the lower VID equate to anything meaningful?

I may be wrong, so please feel free to disagree with me, but my interpretation of VID is simply the vcore Intel determined that chip to require in order to run stably at stock speed (commonly part of the binning process). It should certainly have a bearing on temps under stock conditions as higher vcore = more heat output. One would think it may provide some indication as to OCing potential too, but that also depends how accurately/aggressively Intel binned the chips.

Trying to correlate VID to OC potential is probably impossible as everyone is running at different speeds with different vcore using different coolers on different motherboards. Not to mention the variation between chips as we see with yours above. Far too many variables to gain any useful info IMHO.

To me, the range of VIDs of G0 and recent B3 steppings tells me there's not much difference between them. For example, your B3 stepping has a VID well within the range currently being seen on G0 steppings.

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