Im waiting for that answer too. Seems we have to rewrite the laws of physics soon.
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It doesnt "go" anywhere. It stays within the circuit. The heat that people are seeing is mostly related to electromigration, ie current jumping from more than one level/circuit of the chip which causes resistance and that resistance is turned into heat
That is why i7s are not too bad at lower frequencies but get RED hot at higher ones. Its the same thing that got Netburst into trouble a couple years ago
You didnt answer the question. You simply sprew out jibberish.
And electromigration would result in radiation and material degeneration. It would actually reduce heat. Electromigration ionizes and physically moves particles out of circuits. Hence lost of kinetic energy instead of heat. And then learn the law of conservation of energy.
The power cant stay within the circuit. You keep on pumping power in. A CPU is not some battery you can charge.Quote:
In physics, the law of conservation of energy states that the total amount of energy in an isolated system remains constant. A consequence of this law is that energy cannot be created or destroyed. The only thing that can happen with energy in an isolated system is that it can change form, that is to say for instance kinetic energy can become thermal energy. Another consequence of this law is that perpetual motion machines can only work if they deliver no energy to their surroundings, and that devices that produce more energy than is put into them are impossible.
In short. SOI aint above the law.
Yes, i7 are hot chips, no doubt about it. There are people reporting that all over the dman web, so there's really no point in trying to convince people otherwise. I doubt they're hot enough to burn a house down, but then again, look what happened with Xbox 360!
OK lets get this clear:
100W = 100W, Voltage = Voltage
Yes, if you pump in 100W in any resistor the energy must go somewhere => heat, make it easy and say 100W heat.
Explanation why Deneb might run cooler then Nehalem:
Power formula is: W=(U^2)/R
But what most people seem the forget is that Power is also U*I. And that Resistance is not constant.
The Resistance in Nehalem surely differs from Deneb. But they also draw different amount of ampere.
I don't know the voltage figures for Nehalem but its less then Deneb 1.35V i hear.
So its very wrong to think that I and R are same for both processors and blindly look at voltages and draw the conclusion that Nehalem is cooler by default.
So in an example: W=U*I.
Deneb: 1.35V*80A = 108W
Nehalem: 1.2V* 100A = 120W
Deneb is cooler in this example.
An other example, same voltages: W=(U^2)/R. R=constant=1ohm.
(1.35^2)/1 = 1.82W
(1.20^2)/1 = 1.44W
Nehalem is cooler in this example.
A CPU cannot just absorb electricity and keep it in the circuit. Almost every bit of electricity a CPU uses must be converted to heat, because they do not any kind of physical work. A CPU is basically a giant resistive heater.
If a CPU doesn't draw a lot of power, but get hot, and heats up real quick under an increased heat load (ie. overclocking), then that points to an issue that the die surface physically can't remove heat fast enough from the transistors (like the old Athlon Thoroughbred A vs B), or the heatspreader or TIM is of a sub-par material not able to transfer heat well enough.
If a CPU has a high power draw, but stays relatively cool, then it points to the die being able to remove heat faster from the transistors, having a better TIM and heatspreader material.
Or the most likely cause for both: Software temperature readings of the CPU are complete crap and worthless.
http://www.xbitlabs.com/images/cpu/i...dale/pcons.png
http://www.xbitlabs.com/images/cpu/i...le/pcons-2.png
Its all about the sensors ;)
Quote:
As we have expected, CPUs on 45nm core are overall cooler than their predecessors on Core micro-architecture. However, the temperature different under 100% workload makes only 4-5 degrees. The thing is that Wolfdale processor core is smaller and features higher transistor density within a semiconductor die, which makes it a little harder for the heat flow to dissipate properly. That is why Wolfdale and Conroe heat up almost identically in idle mode. As for the relatively low temperature of AMD Athlon 64 X2 6400+, with twice as high TDP as that of Core 2 Duo actually, it can be explained by the not very best location of the on-die thermal sensor that is situated quite far from the hottest spots of the processor’s semiconductor die.
That is not what I said and yes I did anwser your question. The heat is generated by resistance. Resistance which SOI helps to alleviate now if you want to go on about how nice Intel is, fine. i7 is a great CPU no one disputes that but SOI does reduce TDP go look it up if you dont believe me.
Actually, ya they were. Not everyone lives in Denmark
By that arguement either all the money AMD and Intel spent on SOI was worthless or whomever packages Intel's processors needs to be fired because of the dozens cpus I have owned of both AMD and Intel chips and by far since AMD went SOI their chips have been noticablly cooler running.
As to Shintai's chart there is no way that info can be correct as the Intel chips are less than half of their rated TDP with AMD 2x above their. Bias? I think so.
No you didn't. You said some crap about the power stays in the circuit. If you USE LESS power you PUT OUT LESS heat. If you have a CPU that uses more power then another, then it also puts out more heat. If it runs cooler according to its ondie sensor, that means the sensor is not near the hottest part of the core, or the heat transferring abilities of the chip is better. SOI does not magically make heat disappear.
@Eson, HOW are they noticeably cooler running!? Have you milled a channel right into the IHS of both AMD and Intel CPUs, put a thermocouple in it, and used the exact same cooling solution on both CPUs, with the exact same ambient, while comparing power using of the CPU directly with a calibrated power meter? Or are you talking about what temp coretemp gave you, without paying attention to the actual power the CPU draws? SOI reduces power usage, which in turn reduces heat output. If a non-soi CPU draws less power then an SOI CPU, the SOI CPU is GOING to put more heat. That is fact.
Anyone who trusts software readings of a CPU to have any kind of accuracy is a fool.
I guess the good results wit 45nm node are more due to Immersion Lithography technology along with overall well constructed process rather than the SOI.
SOI helps to decrease the power draw of the circuit, that is e.g:
Bulk 130W
SOI: 105W
(It does not mean that 130W SOI would generate less heat than 130W Bulk would!)
The only way to determine how "hot" a chip runs is to measure the wattage it draws from the motherboard. More watts translates to more heat.
If the practical max. power draw of PhII is 80W and the TDP is 125W(meaning that the stock cooler is rated for handling loads up to 125W), I'd understand how the PhII indeed "runs cool" - due to good stock cooler and "low" power draw.
It all sums to the power the CPU draws from the motherboard. If it draws 125W then it will run hot no matter what. If it will draw less, then it really might run cool.
Just a reminder: TDP rating is for cooler manufacturers mostly and does not really have anything to do with actual power draw of the chip - other than the fact that usually the power draw is more or less near the TDP.
Thats something which caught my eyes since i know that C2D uses DTS to measure the temps, with Ci7 it even more interesstening, since there are far more DTS then they where in C2D. Does PII still relay on the Analouge probes to measure the temp?
I cant find anything about that, but if they use another method you really cant compare PII and C2D or Ci7 tempreature wise.
If i go with the sensore that says cpu the temp is somewhere ~ 57°C (Core temps are ~74°C under full load crunching wcg/seti with 8 threads :) )
yeah 3.4 at idle and only 25 watts at load that's why the 775 bioard have 12 phase power on the board then and digital too. >_>...
lol phases mean jack:banana::banana::banana::banana:... most of that is marketing... why do you thing the smackover only has 6 phases, hell msi even only has 5. :p
All that phase madness was a e-peen contest between gigabyte and asus who got the most phases. :ROTF:
thats to reduce ripple and help stablility how much different is 6 vs 16 is anyone's guess
its like 4 times oversampling vs 16 times oversampling back in the early CD player days
That is correct ... Don't forget the cosinus of the phase change between the Voltage and the Amps ...
Most of the people think that doing Amps x Volts is enough to figurout the watts, it is actually not accurate, CPU can be inductive or capacitive. :up:
The rest of the thread is "voodoo" science ... :)
I propose to add the age of the bus driver in the equation ... lol !
Core i7 was optimized to give you the best performance for its TDP. It, by design used as much head room as it can gets. You will see that to get to the level of performance of Core i7 965, you ll need to overclock the Phenom II over 5Ghz ... look at the power of the Phenom II then ...
I am not even talking to the idle power of the Phenom II, I think you ll get a surprise on who is the hotter chip.
Inside its TDP, Core i7 is unbeatable, it was design for this. Using 130Watts is what it was design for. Try to beat it in 130Watts with any other CPU.
No one is talking about performance, we're talking about power used and heat generated. Personally I don't give a :banana::banana::banana::banana: what the Core i7 965 is capable of, I just want a CPU that can clock decently and not perform a Chernobyl in my neighbourhood.
As soon as the i7 965 isn't a $1000+ chip and can work in socket 775 (just as PHII works backwards...) I'll be impressed. :shocked:
Until then it's another new platform to upgrade to and another chip you get the privilege of paying an extra $500 to unlock the multiplier.
yay finally someone defending defending the deneb thread's...that everyone has to try and through intel and i7 is better into.
Why dear jesus, havn't you smote these people yet?
Damn, that's the worst sig I've ever seen. Wastes a lot of screen real estate (leaving little space for good posts), and as annoying as those flash ads you see everywhere.
"When I looked at Putin's eyes I saw 3 letters: K G B" ... (Senator McCain, September 2008) :rofl:
http://www.youtube.com/watch?v=lAVlaIJWP-Q lol :rofl:
С Рождеством!
Francois
Anyone have an idea if Deneb IHS' is soldered?
I gather Agena is soldered, am I correct?
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i7 vs PII; all I say is "6GHz"...
:ROTF:
I was kinda referring to someone rather than something with "6GHz".
I have a few silly question! Why compare the P2 with i7? I7 platform have better MB section (more SATA, more USB, SLI and CF fogether …). I7 is more professional platform, and it is not only for games, for the good sake i7 is made for the render software and app, right? For games any OC CPU higher than 3.8GHz (C2D, i7, p2) is good! Why Q9550 is not comparable? Why Q9450 is not comparable?
Cause they have the "same name" so they must be comparable. :p:
If we go with the "leaked marketing" slides, AMD themself compares PII with C2D (45nm). Only the hardcore amd fanboys want to compare PII with i7. (yeah flame me for that but thats what i have seen so far :yepp: )
Well hes right, if you compare cpu/cpu only ci7 will win cause i7 needs in idle even less then then C2D. :yepp:
Platform is another thing, since most Ci7 are stuffed with feature and those need power (not to mention tripple channle, 8 layer etc.).
But there are even difference between X58 boards themself, just compare the smackover board with a Asus P6T, the Smackover needs 10W less with the same cpu. :yepp:
Im sure the more feature packed PII boards will consume more then those with less features. When phenom hits retail and is a good performer, i bet we will see some of this "über" boards poping up from asus/gigayte/foxconn/Msi. They will come with lots of addones and features and they will also eat power, just like on the intel platform. :p:
If people want desktop idle and load power consumption values. Wait till i5 this summer without the X58 PCIe switch northbridge. And ofcourse less features like no SAS etc, and less phases for heavy OCers. Extra phases also use more power for those not knowing it. And no, its not needed to run an i7, C2D, C2Q etc. They could be run at 2 etc instead of 16+2.
Guys, just wait. No use to argue now:)
Probly Deneb X4 940 will be a starting point of a new thing...Just like Yonah T2600 (after FX 60 cold bug debacle)...http://www.xtremesystems.org/Forums/...highlight=dumo
Can't wait for NO cold bugged AMD chip....Been waiting for 3 years:(
But that is not ok! :mad:
AMD is doing great job with new P2 CPUs, and with prices that they offering, I think that costumers will be pleased. But comparision with i7 is too silly. Results of the 45nm C2Q is comparable, that is for shore ;)
I spot this link here
http://www.ocxtreme.org/forumenus/showthread.php?t=4302
Let see some test of this link
1. Super pi 1m - C2Q is better
2. Super pi 32m - C2Q is better
3. Cinbench R10 (this is interesting)
AMD P2 at 3000 MHz - 9754
Intel Core 2 Quad Q9450 at 2664 MHz - 10471
Intel Core i7 940 at 2930 MHz (HT on) - 13792
4. Wprime 32m
AMD P2 at 3000 MHz - 13,437
Intel Core 2 Quad Q9450, Q9550 ... can not find results
Intel Core i7 940 at 2930 MHZ - 8,46
5. Wprime 1024m
... i7 - 264,475
AMD p2 - 428,625 ...
Please can some one find rest of the results ( Q9550 and Q9450 at default clock ;) )
The point is that i7 can not compare with AMD P2 it is not same platform ...
Those have to be fake....I don't see any possible way the deneb can be as slow as or slower then agena.
Because if it takes a 3.0 deneb to lose to a 2.66 yorkie then obviously there's something wrong.
No it is not fake :shakes: http://www.techpowerup.com/?79688
Cinbench 10R
http://my.ocworkbench.com/2008/asroc...ebench10-9.htm
this is more interesting
http://forums.anandtech.com/messagev...readid=2260139
Spacemaster,
You forgot to use your sarcasm detector.
Just trying to find true...
4.5K is with 3GHz ;)
http://www.techpowerup.com/img/08-12-23/31i.png
5.9K is with 4GHz
http://www.breakthelimit.net/coolice...3d06-17754.PNG
wobs sry looked at the wrong screens :p:
well its near my former QX9650 @ 3,5ghz it scored 5,5K on 3dm06. (thought i t was not a good run, there are CPUS on orb that get with 3,5ghz 5,6k. ;) )
4ghz C2D scores ~6,1-6,2k in 3dm06
For the record, I do not hate AMD, and I am not Intel fan! :)
AMD P2 is more AMD vs AMD product, and if we must compare it with Intel, I think that C2Q CPUs is more for that job. Is AMD P2 better then Intel C2Q? I think it is in some benchmark, and in some benchmark C2Q is better, but i7 and render tests is just some other story…
Not too bad result, Yorkfield scores like ~6000 at 445x9 and ~6400 at 500x8 with Win XP when looking at the ORB. Looks like it's only ~5% behind in 3DMark06 clock for clock. That's like 4.2GHz vs 4.0GHz and looks like PII can surpass Q9450 and Q9550 typical max overclocks rather easily making them about as fast.
For some reason Cinebench 32bit is treating Phenom 1/2s pretty poorly.
At 64-bit current data (Phenom Is in reviews, Phenom 2 - check iocedmyself's post on Cinebench @ 3.2) shows the P-I at <5% difference between kentsfield, Phenom II unquantifiable, but probably the same (either faster or slower by a bit depending on your relative QX9770 setup)
3DMark has even more headroom in terms of NB clocks, memory (timings and bandwidth). Most "nice" penryn scores I presume are DDR3.
Something is seriously wrong with that Cinebench score.
http://www.techspot.com/review/93-am...ion/page2.html
Didn't get what I said? Phenom II looks to be about 5% slower clock for clock in 3DMark06 CPU score. Just lookup the ORB for Yorkfield @ 3GHz or 4GHz scores man. Of course it depends what CPU multi is used a bit, with 9x multi the difference is like only 2~3% and at 8x multi 7~8% in favor for Intel Core 2 Quad (45nm) at 4GHz. This is just one PII 06 score result though so we don't know how other mobo/ram/configs will score like though, could be easily 100 - 300 points difference.
Just did a quick run with my Q9550 @ 4Ghz (8.5 x 471): Score = 6008
http://service.futuremark.com/result...&resultType=14
PII 940 at 5846 is DDR400 cas 5.
What's yours?
Thanks for answer :)! I think that Q9550 will be equivalent with AMD P2 940 in 60-90% applications, but this is my thoughts, and soon all assumptions will be gone :)
Q9550
With NV
http://hwbot.org/signature.img?iid=144647&thumb=false
http://hwbot.org/signature.img?iid=165460&thumb=false
http://hwbot.org/signature.img?iid=151451&thumb=false
http://img514.imageshack.us/img514/5315/21142mv5.jpg
http://hwbot.org/signature.img?iid=156390&thumb=false
With ATI 4870
5875 - http://service.futuremark.com/result...eResultType=14
6181 - http://hwbot.org/signature.img?iid=145358&thumb=false
6070 - http://hwbot.org/signature.img?iid=139843&thumb=false
With ATI 4870 X2
6324 - http://hwbot.org/signature.img?iid=171762&thumb=false
6056 - http://hwbot.org/signature.img?iid=144647&thumb=false
I do not say that Q9550 is better, but it is comparable with AMD P2 big time :)
:wave:
Yes and it should be 6k.
I've seen many fanboys on several forums claim that PhII @ 4ghz is faster then C2Q @ 4ghz in 3dmark06. It simply isn't faster then C2Q.
I don't say that Jazzman is a fanboy, but there are people who are and compare phII with F* C2Q scores :(
Ok, what about 3DM Vantage?
At 4GHz P2 manage to hit 13520 CPU points.
Q9550 at 4 GHz and lower clock
3875 MHz (with lower GPU clock) – 15876
http://hwbot.org/signature.img?iid=172774&thumb=false
3911 MHz (with lower GPU clock) – 15450
http://hwbot.org/signature.img?iid=155864&thumb=false
3706 MHz (with lower GPU clock) – 14948
http://hwbot.org/signature.img?iid=155797&thumb=false
The results with higher clock than 4GHz
4084 MHz – 16593
http://hwbot.org/signature.img?iid=157015&thumb=false
4030 MHz – 16711
http://hwbot.org/signature.img?iid=172882&thumb=false
...
AMD Propaganda !!
I have to admit some of these CB10 results from PhII look odd...
Here's a run using XP64 on a fairly well tuned 9950 just as a point of reference. I find it hard to believe a PhII couldn't at least better these results.
CLICKABLE:
http://i30.photobucket.com/albums/c3..._1225_CB10.png
See this please :) (64 bit OS)
http://www.bit-tech.net/hardware/200...-965-review/10
Oh guess what? Yeah, sorry to spoil the party, but this thread is titled
'Retail AMD Phenom II X4 (Deneb) OC spotted'
So whats with the all the off topic posts, AGAIN the usual culprits :shrug:, just what is stopping you peeps starting a different thread comparing I7 vs PII, oh yeah, that was it, PII isnt released yet
Recently started reading threads at overclockers.com, and guess what, there aint no off topic posting as those who continually decide to post in this manner are handed a warning and are then BANNED.
I hope to see the admins start conducting a similar sort of stratedgy here at XS as I am FEDUP of seeing the same bull:banana::banana::banana::banana: arguments occuring.
What is some of you peeps problem?
This thread AINT about I7 its about retail AMD Phenom II being spotted. Until then could you IGNORANT peeps please stay ontopic. Ofcourse it is already understood which of the wisecracks will argue this point. So to save me having to respond to them, I dont give a toss what you are going to say.
STAY ON TOPIC
Or dont post
Have got passed fed up of this happening, but love XS too much just to let you simple pigheaded peeps force me to start posting/reading elsewhere.
I want the XS forum moderators to tighten up the moderation so that all the OFFTOPIC posting can be erradicated.
:rolleyes:
oh and
MERRY CHRISTMAS
:D
For you and all those who have reading problems
http://www.xtremesystems.org/forums/...91#post3526091
Have fun, that is if you can grasp the concept
:welcome:
Enough.
Lol:ROTF: