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On DFI boards, RAM are supposed to be in the orange slots, so that's good. It's probably heat that won't let you OC. I know you're gonna say "NO stupid I have the Big Typhoon", but trust me on air, 1.55v isn't going to work without cold nordic air. What temps are you seeing under load at 1.4v?
my temps are low, around 45ish even with 1.55v, so its not the temps, its just my cores fail
Sorry to hear that, you sounded really psyiced out about getting the CPU. Maybe it likes lower vcore? I mean, 2.7 isn't really pushing it.
i HAVE A 165 0551 UPMW @ 300x9 with 1.375x113% (1.536v in CPU-Z). core0 won't go any higher :( I can prime @ 312x9 in core1 with a bit more voltage.Quote:
Originally Posted by Red.Sky
Obviously you got the first crapy 0550 UPMW. Whats the last row number, the one with a batch. Look for 5th/6th/7th numbers. What are they?Quote:
Originally Posted by terrordemon
Try to runnig on different dividers and experiment A64 tweaker.
Quote:
Originally Posted by no_n|ck
I have the same problem with my Opty 170 0550UPMW "434" batch 0336
I don't know if it's ma hardware the problem but my max is 2.7 1.586v... under watercooling
merely by luck I think, my opty 165 runs fine at 2.7GHz with default voltage.Quote:
Originally Posted by DltdApS
any more VPMW results?? I'm looking to get a 165 this week and I'm in the air over UPMW/VPMW.....
its in my sig, L50540Quote:
Originally Posted by no_n|ck
would the dividers really have that much of an impact on this?
since the memory controller is on the die, each cpu may need to be tweaked to settings vastly different from another cpu.Quote:
Originally Posted by terrordemon
I use CMOS reloaded to save different cpu settings... saves time and aggravation
I've got a 165 in an Ultra-D
My motherboard reduces de vcore I set in BIOS...
I leave BIOS with 2.7ghz with 1.450v
when i reach windows and open ITE or CPU-Z it shows 1.392 so I believe my Board as got an offset (not sure this is the exact word...sorry!) 0.05v
my question is: can i reach 1.6v in windows? (that would mean 1.65 or more in BIOS) would it be safe? with a Big Typhoon on my 165?
i think i got a good stepping since it primes (2 times) with the config I said before ( 165 -> 2.7 @ 1.392v) what do you say?
is there a deadly vcore or it has to do with the temperaure only?
thanks in advance! sorry for my english!
Voltage kills faster than high temps. A combination of high vcore and high temps is even more deadly.
Quoted from another board:
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There are 4 ways that chips break:
electromigration: metal atoms in a wire move around because lots of lots of electrons hit them. Move enough metal atoms and the wire will either short with another wire, or have a hole in it and stop working.
TDDB: the insulation material that separates two key parts of a transistor breaks down creating an electrical short - which breaks the transistor. In most cases, if any one of the hundreds of millions of transistors breaks, it will break the chip.
hot-e: a key parameter of the transistor called "Vt" (threshold voltage) shifts over time - which essentially slows the transistor down. If it slows down enough, then the chip will calculate an incorrect value.
BTI: Similar to hot-e but for a different type of transistors and happens for a different reason. Usually fixed in the factory.
In all but hot-e, increasing the temperature a little makes the chip a little more likely to break (this is all statistics... there is no "do this and this will kill your chip..." it's all a matter of probability). In hot-e, lowering the temperature makes it worse.
In all of these, increasing the voltage a small amount makes them much more likely to break the chip.
As to why 10% more voltage is much worse than 10% more temperature, well let's take the example of electromigration and look at it in detail.
Wires are made up of atoms all lined up. Electrons flow through these atoms. An electron is a very small thing, and atoms are a lot bigger. So the idea of an electron moving an atom around is a lot like someone trying to move a car (atom) by shooting a BB (electron) at it. Clearly to ever hope to move a car by shooting BB's at it, you would need a lot of BB's... a storm of BB's. But if you get enough, the car will move. Millions of BB's and that car will likely start getting pushed around. The temperature of the chip could be thought of as how slippery the road is. A little bit more slipperiness isn't going to help a BB move a car. It helps a little but not a lot. On the other hand, the voltage determines how many BB's you have, and it's not like 10% more voltage is 10% more BB's (electrons), you get a lot more than 10%. And worse than that, because increasing the voltage in a chip also increases the temperature (all things being equal, like same heatsink, same air temp, etc.), increasing the voltage is a double-whammy.
The others are similar... but more complex to explain (I'm still not sure that the experts really completely understand the low-level details of both TDDB and BTI...).
Patrick Mahoney
Enterprise Processor Division
Intel Corp.
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i dont know how thats really relevant to this thread, but its good general knowledge. if anything it should be in a thread by itself and stickied
2 days of data lost??!!
opty165 @default voltage 2.8GHz done!! (312MHz*9)
using new DFI nf4-D mod. MB
Dual SP2004 stable!:woot:
here is the 3DMark06 with 7800GTX 256MB 1pcs.
1.65 on bios is more like 1.7v actual v-core.Quote:
Originally Posted by sway
I've ran 1.72v bios on my phase unit for some time before (like 2 months straight?) with no ill effect really. So... it really depends on what chip likes I think. I am currently running at 1.65v on bios for my 24x7 on this opty for last month or two or so. (dual core).
No ill effect really... **shrug**...
:confused: :confused: :confused:Quote:
Originally Posted by jinu117
I set "AUTO" in BIOS and I just see 1.344v in Windows when running @2.8GHz
http://img.photobucket.com/albums/v6...yprime1658.jpg
2.8 GHz prime stable :D
It could probably do better, but temps. rise towards 50*C....I think its bad IHS contact as i've reseated my waterblock 4 times, and i get 35*C idle temps in a 18*C room :stick: My GPU on the other hand is at 28*C idle and 45*C load(volt-modded, #4 in the 3DM05 ORB, #1 in the 3DM03 ORB for its class)
Still, far from shabby. I'll keep the IHS on, as IMO, a 100 - 200 MHz gain isn't worth the risk. Besides, I can bench at 2.9 GHz, and run super pi 1M at 3 GHz :)
from your temp. and volt., already risky enoughQuote:
Originally Posted by K.I.T.T.
With new 170 CCB1E 0550 VPMW :)
http://i9.photobucket.com/albums/a10...%20170/295.jpg
edit : update 2.95G vcore 1.4V
:confused:Quote:
Originally Posted by kenofstephen
oops.....no wonder you are having such problemQuote:
Originally Posted by K.I.T.T.
keeping the temp. well is the first step.
You mind telling me whats wrong with my setup or are you going to keep on posting useless comments? :rolleyes:Quote:
Originally Posted by kenofstephen
sorry, I added back a screen cap. for your reference.Quote:
Originally Posted by K.I.T.T.