Wattage out put on the LV 1.6 Xeon

diehrd · Jan 19, 2005

Any one know the stock wattage out put of these 1.6 processors ? And any one have any Idea what they end up being when ya crank it up to say 3.0 and 1.6vCore or 3.2 and 1.60vcore

dicecca112 · Jan 19, 2005

all I could find was this http://processorfinder.intel.com/sc...cFam=528&PkgType=ALL&SysBusSpd=ALL&CorSpd=ALL

bchur83 · Jan 19, 2005

Well, I just ran Sandra 2004, and it says that my Dual Xeon 1.6LV @ 2.6Ghz 1.6V is running 238W combined. I think that is a bit high, but I would guess that they put out at least 75W each @ 1.6v.

Seven · Jan 19, 2005

72W or that other outrageous figure seems a little drawn out.
I mean, lets face it, even a press-hot doesn't put more than 120W. My 2.4B puts out about 67W MAX.

benchtest.com said:
Pentium 4 NOTE: The maximum wattage for the P4 will probably never be reached. The P4 uses a Thermal Control Circuit (TCC) which has a speed throttling feature that may be set to "automatic" or "on demand" through the system BIOS. In "automatic" mode, the processor's clock speed is reduced by enabling a duty cycle (50% on - 50% off) when the core temperature approaches the pre-set thermal limit. In "on demand" mode, the duty cycle can be programmed from 12.5% on/ 87.5% off, to 87.5% on/12.5% off in 12.5% increments. In addition to throttling the processor's speed, in the event of a catastrophic cooling failure, the processor will automatically shut down when the silicon has reached a temperature of approximately 135 °C.

So there you have it.

7

H2 · Jan 20, 2005

I have those exact Xeons in my sig and I have to agree with bchur83.
I just ran Sandra 2004 and my combined wattage with 2 instances of folding was 238 watts min and Max was 278 watts.
I know that sound like a bunch, but its the overclocking that does it. At stock 1.6gig if I remember right the wattage was way down around 110 combined.
I think this is probably close as I am using a Enermax 550 watt and my voltage barely holds.
Hope this helps you. I'm running 211FSBx13

diehrd · Jan 20, 2005

dicecca112 said:
all I could find was this http://processorfinder.intel.com/sc...cFam=528&PkgType=ALL&SysBusSpd=ALL&CorSpd=ALL

ok that is for the other 1.6 not the low voltage variant...Notice it is at 1.75 and 72 watts...
Ok I am editing this post::::;

Found it , At the intel site..We have stock of 30 watts for these processors at the 1.3Vcore default setting.SO I am quite sure overclocking to 3.0 or 3.0 at 1.6Vcore can in no way kick in an additional 85watts...Anything that says 238 for both has to be way off the mark.I would guess a total of maybe 85watts when pushed hard or even to there limit..

http://www.intel.com/design/intarch/prodbref/25270904.pdf

Col_Loki · Jan 20, 2005

Id agree, could you imagine what the temps would be like with that much heat output and low-med grade heatsinks? From the temps ive been hearing Diehrd's figure seems pretty close....

Ive ordered a set of the Xeons myself (D1 stepping) and intend to use my watercooling setup on it to reduce noise and give a little better overclock, great find i must say. If i get over 2.8ghz ill be happy, 3ghz or over and ill be extatic.....

diehrd · Jan 20, 2005

My box as it is set up outputs 112 watts per processor..And I as pretty impressed with the lower values of these I may even cool a GPU now that I will have close to 100 watts less heat to cool off..

dicecca112 · Jan 20, 2005

just imagine what my prescott based noconas are putting out right now.

jamesavery22 · Jan 20, 2005

dicecca112 said:
just imagine what my prescott based noconas are putting out right now.

Since Intel doesnt care about 4ghz any more noconas aren't consuming much power at all:

http://www.eweek.com/article2/0,1759,1751671,00.asp

Course 3.6ghz noconas are a different story. The later steppings of Noconas were said to have power tweaks, although I dont think it did much. Something like 10watts better.

dicecca112 · Jan 20, 2005

thats great and all, but good luck finding those in the retail market.

H2 · Jan 20, 2005

The voltage on my 1.6 Xeons are 1.54Volts I cool them with Koolance watercoolers and the Bios says under full load they are running 42C at 2750mhz. They put out quite a bit of heat as my waterblock temps go from Idle 27C to 35C
CPU-Z says they are Prestonia 0.13u Voltage 1.534
Stepping 7 Revision C1

dustybyrd · Jan 20, 2005

here is a program that calculates the maximum and 80% of max cpu power usage:

http://www.benchtest.com/calc.html

and here (in the middle of the page under CPU POWER by Kostik) is another program that calculates maximum cpu power usage:

http://www.silentpcreview.com/Web_Links+index-req-viewlink-cid-19.html

if you assume a 1.6A has the same power characteristics as the 1.6ghz xeon (which it probably does at 1.5v, since they are both 0.13micron process chips)...then the max power consumption is going to be around 100-130 watts...that's per CPU

diehrd · Jan 20, 2005

dustybyrd said:
here is a program that calculates the maximum and 80% of max cpu power usage:

http://www.benchtest.com/calc.html

and here (in the middle of the page under CPU POWER by Kostik) is another program that calculates maximum cpu power usage:

http://www.silentpcreview.com/Web_Links+index-req-viewlink-cid-19.html

if you assume a 1.6A has the same power characteristics as the 1.6ghz xeon (which it probably does at 1.5v, since they are both 0.13micron process chips)...then the max power consumption is going to be around 100-130 watts...that's per CPU

Dusty check out the link..Here is a spec sheet on the 1.6 Low voltage processor,,30 watts stock at 1.3VCore..I doubt ya will crank em up to 110 watts at 1.60
http://www.intel.com/design/intarch/prodbref/25270904.pdf

{PMS}fishy · Jan 20, 2005

dicecca112 said:
all I could find was this http://processorfinder.intel.com/sc...cFam=528&PkgType=ALL&SysBusSpd=ALL&CorSpd=ALL

Thats not right, as my chips are marked at 1.3v

dustybyrd · Jan 20, 2005

diehrd said:
Dusty check out the link..Here is a spec sheet on the 1.6 Low voltage processor,,30 watts stock at 1.3VCore..I doubt ya will crank em up to 110 watts at 1.60
http://www.intel.com/design/intarch/prodbref/25270904.pdf

yeah, but here's how you calculate the max power consumed by a processor:

for the 2.4ghz Xeon processor:

Icc(max)=51.4, and the max Vcc=1.456v.......thus power=I*V~75 watts

for overclocking and overvolting here is the formula:

((o/c voltage)^2) / ((stock voltage)^2) * ((o/c speed)/(stock speed)) * (Icc max)

thus, a 2.4ghz xeon at 1.6v and 3.5ghz (mine for example), has a max power consumption of ~120 watts per xeon...

therefore, for a 1.6ghv LV xeon at 1.57v (pin mod for 1.6v) and 3.2ghz, the max power consumption is ~90 watts per xeon...

Wattage out put on the LV 1.6 Xeon

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