Lower VID = Higher Temps.
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Lower VID = Higher Temps.
...I think you got that backwards: lower VID = lower temps since you can run the same o/c @ a lower voltage... or at least that is what others have been reporting.Quote:
Originally Posted by Gam3Ra
Lower VID = higher current
I can run 3900Mhz 1.44V, but is hotter than other chip 4ghz 1.62V, and need minimum water with good block for temps under 65C
kinda true, I got no source to support it 100% but I gotta agree with you on this one cuz both my E6600 and Q6600 with a low VID run quite hot.Quote:
Originally Posted by Gam3Ra
Just updated the first post of the thread with the data collected. Have a look!
FPO/BATCH #: L721A338 B3 Stepping (vid) 1.3250 7/11/07
Summer time now, so with the AC on, room temperature is about 70FQuote:
Originally Posted by graysky
3.7ghz 1.5V (1.47 Windows) it idles anywhere from 30 to 40c
When I run Prim95, it jumps all the way to 60c - 65c
Thermalright Ultra 120 with a 1500 RPM BLUE LED fan!
I might look into lapping it someday...
Okay guys, just updated the first post of the thread to reflect the new replies... have a look!
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?
I've tried to pay special attention to peoples VID when they post their OC's, I'm beginning to think VID value means nothing to an OC.
mine(B3 Q6600) is 1.3125V
*edit: typo;)
frado you mean 1.3125V.
Batch = L719A424
Stepping = B3
VID = 1.3250
OC = 3.2 @ 1.35vc bios set
Idle temp = 46C approx
Load temp = 70C max (prime95)
Room temp = 26C approx
Mobo = P5K deluxe
Cooling = water (swiftech apex ultra kit)
http://xs318.xs.to/xs318/07323/vid.png
1.3125v
L644G
1.3
Just updated the first post of the thread with the data collected... I counted 113 replies so far.
Q6600 "G0" L723A825 VID = 1.250:) Current OC of 3.71GHz (412 x 9) with only 1.43 Set in BIOS on the P5K-DLX. Under full load, Voltage is still 1.41V.
http://aycu15.webshots.com/image/242...7905212_rs.jpg
Updated the first post of the thread with the data collected (123 replies now) and added some histograms and basic statics to help visualize the data set.
Q6600 @3610 (401x9) @1.352v Load (1.35 Bios)
Stepping = G0
BATCH = L729A312
Date = 07/31/2007
Vid = 1.2625
Idle temp = ~30C
Load temp = ~51C
Cooling = water (swiftech apex ultra)
B3 VID 1.2750
Not tried to overclock much because i'm still at stock cooler
Q6600 G0/SLACR L723A841
Stock speeds / powers / voltages reported by P5K DELUXE WIFI motherboard
running Fedora 7 LINUX.
2.6.22.1-41.fc7 #1 SMP Fri Jul 27 18:21:43 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
1.15 Vcore 266x9: acpi-cpufreq: *P0: 2394 MHz, 88000 mW, 10 uS
1.06 Vcore 266x6: acpi-cpufreq: P1: 1596 MHz, 59048 mW, 10 uS
Currently running burn in testing with MLucas version of Prime number
factoring code on all 4 cores (Prime95 for LINUX basically)
@ 1.15 Vcore 2394 MHz 266x9, 88 CPU Watts,
Core 1 50C
Core 2 49C
Core 3 43C
Core 4 47C
reported by lm-sensors code / sensors utility; hopefully it's accurate.
Cooled by air with a *loosely* (twists easily -- needs fixing) mounted
600 grit flat lapped ThermalRight Ultra 120 Extreme using
2x SFF21F fans @ 1600RPM in a push-pull configuration.
Arctic Silver 5 applied according to their own Kentsfield Quad Core
application instructions (e.g. squirt out a line/bead of paste from
side to side of the IHS and then just install the heatsink, don't spread it
manually).
ANTEC Sonata 1.0 Case, 120mm rear case exhaust fan,
Antec Quattro 850W PSU.
Q6600 G0 L724A639
1.2500 VID
Very Hot chip, but its really good too. 3,6Ghz @ 1.41vCore Prime Stable, 3.7Ghz @ 1.43vCore, Prime stable, 3.8Ghz Prime stable @ 1.45vCore.
Max Boot 4.2Ghz, uptil now. Havent got time to test more.
Quote:
Originally Posted by Ad1tya
nice chip u have there..
Is this close to what most people think at this point or am I missing something?
Lower vid =
1. A lower voltage at the same OC as a CPU with a higher vid....but only to a certain OC level?
2. Generally higher temps at a lower voltage.
3. Having a low vid doesn't mean it will OC higher than a high vid.
FPO/BATCH #: L715A725 B3 Stepping (vid) 1.2750