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View Full Version : [C2D]General Question: Does VID really matters?



ci2kla
02-18-2009, 07:22 AM
Hey guys...
Just wondering if VID really matters in overclocking in high / low voltage...
Please kindly share your CPU's VID and O/C condition, discuss and see if it really relate to high much juice does it need for a certain clock that's with different VID or so...:)

I have played an Q9550 with VID 1.1875v can do 471x8.5 @1.2125v rock solid,
a Q9650 with VID 1.25v can only do 475x9 @1.3875v
now E8500 on hand, VID 1.25v as well...testing 445x9 @1.2v...

Oats
02-18-2009, 11:54 AM
CPU: E8400
VID: 1.25
OC: 500x8.5 @ 1.304

Perfectly stable

SNiiPE_DoGG
02-18-2009, 11:59 AM
there are lots of theories about how VID effects overclockability and voltages required. No one has a true and conclusive answer although I think some people have pretty good guesses.

IIRC Jor3lbr said that the low VID chips reach a certain clock with lower voltage, whereas high VID chips reach a higher possible clock than the lowervid chip.

it makes a bit of sense to me, but as I said no one knows for sure. :|

jaredpace
02-18-2009, 12:10 PM
CPU: E8400 e0
VID: 1.25
OC: 478x9 @ 1.392

GeorgeStorm
02-18-2009, 02:17 PM
I think that low VID chips run cooler, but in general can get as high clocks, (on the same cooling)
My e7300 has a VID of just over 1.1v not too high or low, and it clocks ok, but not brilliant, max 3D benchs on air was at 4.3GHz, but that was with around 1.7v through it, :D (and this is my first ever custom built computer, and first that I have overclocked of my own, have had a go with a friends before though

Leeghoofd
02-18-2009, 03:09 PM
There's no golden rule for VID, Batch, wafernr... every little detail can help, but does NOT warrant a good clocker... and usually a low VID cpu runs hotter ( if the sensors aren't borked ) George than a high VID... weird indeed, but it's in most cases like that...

Falkentyne
02-18-2009, 03:23 PM
Yeah my 1.225v QX9650 only gets to 70C in Linpack at 1.3875v at 4 ghz, with a TRUE black. (60C in prime). That's not bad at all for linpack testing.
With the Tuniq Tower 120, the chip would reach 88C and the crash with the worst screeching sound you could ever know....

A Core i7 running at that speed and vcore would probably reach 80C in Linpack with a TRUE and 70C with prime.

What we really need is not the clocks and voltages, but ALSO the temps and HSF used.

The only way to get meaningful data is from the temps.
The results will be all over the place, but once compensated for the HSF used, then you can get more organized results.

Ozzfest05
02-18-2009, 03:31 PM
VID doesnt mean anything conclusive I have E8600 VID 1.18 @ 4.5 ghz 9x500 1.29 volts 24 hour primed this runs 24/7 and it runs hot

these clocks im using Apogee GTZ with a Tripple Rad on a CPU only loop everything is as good as it will get I could use some better rad fans currently using 1350 rpm yates, temps 39-43 Idle depending on the day and load is 59-63 in prime

GeorgeStorm
02-18-2009, 03:33 PM
Leeghoofd,
Yes, youa re right, tyhat is what I have heard, becuase there was a trade off, (lower VID, but higher temps, )
But, overall, nothing conclusive about the overclocking ability,

Ozzfest05
02-18-2009, 03:38 PM
Also wanted to mention I had a E8500 vid 1.28 previously a C0 and I ran that benching on air at 1.73 volts yes I know and that runs at the same temps as my E8600 vid 1.18 at 1.3 volts the 8600 on water the 8500 on scythe infinity