QUAD core Pushing 300W on a single stage

[kayl]

Been playing around with a 1/2hp rotary compressor and R290.
Seems that a quad core at 4Ghz with 1.55vcore load quad prime is equal to 300W on my load testing both reading -32c
Also wprime 1024M runs with 1.62v is also around 300w.
ALso found that vcore after 1.55v on quad prime didnt clock any high.
Wprime 1.6v had the same findings ie more vcore after 1.62v didnt increase OC

[gosmeyer]

Been playing around with a 1/2hp rotary compressor and R290.
Seems that a quad core at 4Ghz with 1.55vcore load quad prime is equal to 300W on my load testing both reading -32c

That's a solid ballpark,300w number
Nice job

[sdumper]

Very hot chips!!
Hopefully this issue will go away with Penryn

[cadaveca]

I've been saying for ages that most psu's are not enough for quads based on this fact...12v x 20a=240w only. dual-rail psu is not enough, and, assuming cpu draws off of rails 1 & 2, and more often than not in multi-card, second card draws off of rail2...well...in most cases psu is holding people back.


You see top benchers running dual psu's...


so now we gonna see phase tuned for 375w? What temps would that give us, Kayl?

[wdrzal]

I've been saying for ages that most psu's are not enough for quads based on this fact...12v x 20a=240w only. dual-rail psu is not enough, and, assuming cpu draws off of rails 1 & 2, and more often than not in multi-card, second card draws off of rail2...well...in most cases psu is holding people back.


You see top benchers running dual psu's...


so now we gonna see phase tuned for 375w? What temps would that give us, Kayl?

What CPU runs @ 12 volts ?????????????

[Ham]

What CPU runs @ 12 volts ?????????????

The majority of components run off the 12v rails off a psu. The motherboard then steps the voltage down too what you want for the CPU.

Hence why the 4/8 pin power connectors are all black and yellow.

[cadaveca]

What CPU runs @ 12 volts ?????????????

Um, did they make "watt" have many values now? I thought it was a standard unit of measurement?

Volts x Amps =W

12v or 1.5v doesn't matter, the wattage remains the same, merely the amperage increases. Power draw of the 8MB of cache, don't cha know.

As you scale speed faster, merely the A requirement of cpu increases...

[wdrzal]

so just because I have a 200 amp service in my home doesn't mean I,m using 200 amps. its 240 volt L1 to L2, L1 to ground is 120v and the primary side of the transformer is 17,000 volts.

CPU's are what 1.5 to under 2.0 volts for the most part.not 12v you don't use the starting point number in the forumla.

A "Watt" has 3.412 BTU's

[K404]

I *think* wdrzal is right...

If we were using 12V as the relevant number, power consumption wouldnt change as we overvolt as its always a 12V supply...to be really smart-ass, if the base supply voltage was the relevant number, power consumption would go down under load if the PSU stability takes a hit and the 12V rail drops

[cadaveca]

read the intel documents then, on vdroop. for cpu to consume 130w, it consumes about 87A @ 1.5v.


so yeah...Amp is a standard unit of measure, as is wattage. I'm not even gonna bother with this tho... have fun.


WTF..mr law of conservation...wzdral..um, where did the heat come from, magic?

good day gents.

[wdrzal]

You must think there is only 1 circuit within a CPU how many pins? and billions of gates???

[[XC] gomeler]

I am so confused what exactly walt is arguing about? W = V x A, amperage increases with clockspeed, voltage is user/droop dependent. PWM draws power from 12v lines. If you don't believe the amperage bit just watch powerdraw increase from load to idle, guarantee your vcore isn't doubling so that means.. amp increase.

[Pete]

Kayl can you hear still?

400w to be safe i think!

[kayl]

That's a solid ballpark,300w number
Nice job

sure is, poor compressors specailly the smaller 1/4hp ones.

Kayl can you hear still?

400w to be safe i think!

for a cascade maybe 350 as cold ice found with his resent moster cascade.
my new load tester only goes to 312W. last one only did 26xw.
I still always use a cpu for main testing, fist charge in the shed on the load tester though

[Pete]

for a cascade maybe 350 as cold ice found with his resent moster cascade.
my new load tester only goes to 312W. last one only did 26xw.
I still always use a cpu for main testing, fist charge in the shed on the load tester though

Fully agree with you there Kayl! Get the system to a safe stage under load then get it on a system and you will have more of a true fact and ball park idea etc! Plus tuning it to what the kit it runs on willl be putting out there for a better unit!

300W is a lot but it's going over that and 45nm is going well over it once oc'd big time on TDWP i have heard

[n00b 0f l337]

I'd say insulate up and then tune again, found big differences between with insulation and without, definitly big.

[[XC] gomeler]

Well yeah.. you aren't sucking up potentially hundreds of watch in ambient heat. When tuning I wrap up all the lines with pipe insulation but don't seal it up just in case I have to make a change. Always test/tune though once you are fully satisfied with the piping,

[dinos22]

so you reckon quad is hotter than the Pentium D you have kayl

hey btw i bought a decent thermometer now man >> Fluke 52

and let the blackbox work for around 30 minutes
at the beginning (initial temp drop) the temps peak at -65C and later settle between -51C and -56C in around 15C ambient (they seem to move 5C or so...i used the memory function on the Fluke)......sound better than expected....what type of probe is in my unit, K-type??

[AliG]

Actually I believe I read in a thread that he stated his pentium D at high clocks was actually hotter

[dinos22]

Actually I believe I read in a thread that he stated his pentium D at high clocks was actually hotter

yeah i know.....we "tuned" my rotary blackbox on his PentiumD

man that CPU was very taxing no the mobo................the drooooooooooooooooooop was so bad it's scary to even mention it at 5Ghz+ with high vcore

[[XC] gomeler]

Pentium D pulls harder than a quad in my experience at 4.5+GHz on the Pentium D. I benched on a PD805 for the 2nd time last night, PC was drawing a total of 415 watts from the wall, cascade pulling 1250 watts. This was at 4.65GHz, 1.55vcore, both cores loaded and a PCI VGA. One leaky chip with that much vcore :sigh:

[gosmeyer]

That's insane

[dinos22]

Pentium D pulls harder than a quad in my experience at 4.5+GHz on the Pentium D. I benched on a PD805 for the 2nd time last night, PC was drawing a total of 415 watts from the wall, cascade pulling 1250 watts. This was at 4.65GHz, 1.55vcore, both cores loaded and a PCI VGA. One leaky chip with that much vcore :sigh:

faints lol

[kayl]

so you reckon quad is hotter than the Pentium D you have kayl
hey btw i bought a decent thermometer now man >> Fluke 52
and let the blackbox work for around 30 minutes
at the beginning (initial temp drop) the temps peak at -65C and later settle between -51C and -56C in around 15C ambient (they seem to move 5C or so...i used the memory function on the Fluke)......sound better than expected....what type of probe is in my unit, K-type??

yeah the 925D (130w stock) was hotter than my ES B1 QX6700, the ES B3 QX6700 whasn’t anywhere near as hot as my current QX6700 B3. im not sure if the 925D is as hot as my new quad but still very hot. If I go on vdroop the 925D is still hotter, ie 1.85vcore drooped to 1.55vcore with the 925D
the ES B3 QX6700 1.85vcore droops to 1.75vcore
and my current QX6700 B3 retail droops to 1.7vcore.

Pitty I didn’t have much time at your place that night to tune that beast further, that compressor is insane hey. Even with r290 it was getting some nice cold numbers, would have been better to put a r507/r410a blend into here, but we used what we had.

Yes that probe on the head is a k-type probe dino.

Actually I believe I read in a thread that he stated his pentium D at high clocks was actually hotter

That 925D was orthos stable on a single stage a 5.1ghz eheheh
On the cascade almost 5.4ghz stable, same one as in my sign.

Pentium D pulls harder than a quad in my experience at 4.5+GHz on the Pentium D. I benched on a PD805 for the 2nd time last night, PC was drawing a total of 415 watts from the wall, cascade pulling 1250 watts. This was at 4.65GHz, 1.55vcore, both cores loaded and a PCI VGA. One leaky chip with that much vcore :sigh:

The PD805’s are on par with the 925D both 130w stock, the other pentium ds are only 90w stock but still quiet hot.

[wdrzal]

Pentium D pulls harder than a quad in my experience at 4.5+GHz on the Pentium D. I benched on a PD805 for the 2nd time last night, PC was drawing a total of 415 watts from the wall, cascade pulling 1250 watts. This was at 4.65GHz, 1.55vcore, both cores loaded and a PCI VGA. One leaky chip with that much vcore :sigh:

What do you mean 415 watts from the wall?????? are you measuring the entire psu?????