im so glad i just checked this thread.......gotta love dumb luck.
im so glad i just checked this thread.......gotta love dumb luck.
ok, thats all so far, as soon as i get more results from pc ice or oppainter i will post them
what caused the error in sandra just pushed it to high and what you said in the first post about the volts is that still there with water?
does anybody have any reservations about buying one of these venice chips and it might not work on phase change? i know i do. i been looking for a solution incase my winchester doesnt agree with the chilly1 phase change cooler that hes making soon, and well i know it wont reach -90c and -40c might be more reasonable but who says all venice chips work like this one. i guess we have to wait till they are released for some solid feed back on subzero compatibility, besides one chip.
Well.....so far it's two outta two that work with single stage. Both the 3800+ and the 3500+ didn't have a problem at sub zero. The coldest I could get the 3800+ was ~ -35C. Also, the 3800+ was able to run benches @ ~2.9G on a stock hsf:Originally Posted by odb
Personally, I think that these cpu's do scale with voltage. It's just that the range of vcore is smaller that what we're used to. The 3800+ stopped responding to bumps in Vcore at around 1.65V.
check the first post of this thread, i sorted all results regarding water and phase change coolingOriginally Posted by Fzero
and yes, the error was caused by a too high oc.
you mean you couldnt get the temps to go lower than -35°C because the mach2 didnt get the cpu cooler, or do you mean the cpu crashed when you reached temps below -35°C? evap temps or cpu temps read by the internal diode?Originally Posted by s7e9h3n
hmmm did you play with the 3500+ on air or phase change steven?
did it respond to vcore? dave said the 3500+ didnt respond to vcore bumps AT ALL and he tried up to 1.6v maybe its a problem with his board?
Hey saaya,
All temps I noted were read on a uei dt200 from a thermocouple attached to the side of the cpu. The -35 was just the limit of the cooling, not the 3800+. I don't think my unmodded mach2 could have gone any lower with this cpu.
Nope, I never even considered testing the 3500+. I needed a break after the 3800+ and put my fx55 back. I actually had spent more time testing the 3800+ with the mach2 than I had with the fx55.
In no way am I questioning PC-Ice's results with the 3500+, but there probably is a problem with this board or something of that nature. I have yet to see a cpu which didn't respond at all to bumps in vcore. The Venice scaled as well as, if not better, a lot of cpu's I've seen. It's just that the way it scaled was a little different. It seemed as if bumping the 3800+'s Vcore didn't have a large affect on the cpu's temperature. I don't think I recall the cpu temp ever idling in the 40's, even @ 1.70 Vcore. Basically, the cpu just stopped responding OC-wise beyond ~1.65V.
Originally Posted by saaya
Damn, that sux pc ice. Lets just hope it's just your Venice that doesn't like volts.
Could be that they're now using the "crappy" cores for s939 512kb cpu's, and the good ones for the 1mb cache mobiles (turion) on s754 that have a lower wattage rating (around 35w?). this is however just a theory...
C2D E6300 @ 3.5ghz | 2x1GB ADATA "Micron D9" @ 500 4-4-4-12 2.3v | Asus P5B-E Plus C2 | Sapphire X1900XT 512MB | Tuniq Tower 120
hi. first I want to say HI o/c potencial of Venice is realy big! there is some test os San Diego too?
Welcome to XS Raul...If you look at the stickies in this forum and "The Best of AMD" you'll find a peek at the 4200+ San Diego....Originally Posted by Raul
i dont think so, even average winchester cpus are able to work at the frequencies and voltages of a turion, i dont think that the turion cpus are the best a64 silicon amd can make, i think the best is used for fx chips, then high end a64 chips and opterons and then they test wich of the remaining cpus works good with low volts and make them turions or mid to low end a64s...Originally Posted by _Eduard_
hmmm im going to ask amd about this, it shouldnt be a big secret they wont tell us
hi raul, welcome to XtremeSystems
Could it be possible that Venice and San diego has some kind of overvoltage protection ?
Last edited by WOLF_OF_DK; 03-30-2005 at 11:20 PM.
Originally Posted by s7e9h3nAs I said before, you can not just assume that CPUs scale with voltage. My Clawhammer gets to 2.6 with near stock voltage, but it is entirely unachievable to get to 2.7 at ANY voltage with air (XP-120). I also do not believe this is an "overvoltage protection" issue since on the 3500+ Clawhammers this phenomena has been seen on most CPUs. Since the Clawhammer is much older than the Venice, I think this implies that this is just a result of the CPU itself and not a new "feature".more than stock vcore barely seems to do anything to this chip
DFI nF4 Ultra-D
1 GB of OCZ PC3700EL Platinum TCCD
AMD 3500+ Clawhammer (XP-120)
eVGA 6200 -> 6600 softmod
Like mine winnie 3000+ i could run on stock and up to 1.8v vcore and when it was going at the best it run 2840mhz, but my 3500+ winnie just like stock and up to 1,6 over that it doesnt happen anything it run as best on water 2870mhz cold water..3500+ did on stock 1.4v 2800mhz right out of the boxOriginally Posted by saaya
benchrigg-Intel i7-965 Extreme Edition-GB EX58-UD5-TRI Channel Corsair Dominator 1600Mhz-2x250Gb Hdd raid 0- Corsair HX 1000W modular PSU-Sapphire HD3870 TOXIC 512MB XFIRE.
24/7 Rig|Gigabyte DS3 rev-2.0|P4 925 D 3Ghz|Crucial PC2 533 D9GMH 2x1024|gainward 7300GS 256mb|120g+200g+200gbhdd+ 2x sata II 200gb+ 350gb sataII|psu Hiper 580w modular
possible the San Diago somehere got to use was Stable to 2850 Mhz then just dies of doesnt scale well at all to more voltage.Originally Posted by WOLF_OF_DK
My Rig
Conroe E6600 | ASUS P5W DH Deluxe
TeamXtreem 2 Gig Micron | ASUS EN7900GT @ 700/800 (24/7)
A-Open 700W | 2 x Hitachi 250GB SATAII
Antec P160 | Watercooled
Um......I'm not sure where I stated that there was an "overvoltage protection" "feature" on these cpu's. And, unless your clawhammer is able to get to 2.6 AT default vcore, then it would be considered scaling -albeit minor- if you acheive a higher clock with increased voltage.Originally Posted by Ackbar
Sorry, I wasn't answering you about the "overvoltage" but I quoted you kinda as to show that there are two sides to this story. Sorry for the confusion!Originally Posted by s7e9h3n
I'm able to get 2.6 at ~1.55V (default is 1.5V). So you're right, that 0.05 V helped. But no, nothing after that really did anything. Don't get me wrong, voltage helps, by no means am I able to use anything below 1.55V to get to 2.6 GHz. That's obviously not the point though, the point is that after a certain point, the the voltage to clock curve reaches a point where it is no longer well-behaved (ie. it blows up and becomes infinite for all intents).
DFI nF4 Ultra-D
1 GB of OCZ PC3700EL Platinum TCCD
AMD 3500+ Clawhammer (XP-120)
eVGA 6200 -> 6600 softmod
here is a nice peek at the short preview/review oppainter wrote with the 3500+ to get you all excited
because what we had not mentioned so far is that venice is faster clock for clock than a winchester
Specs:
DFI 939 Ultra
MSI X800XT 520/560
OCZ 3700 2.5-4-4-8 @ 300
All CPUs ran at 300x8 2400MHz
this is an average result!
there was no bad/buggy run
i wont post more results in this thread.
opps review/preview should appear on the front page very soon, dont miss it!
Hehe! SSE3 at work. A promising result.
Core 2 Duo E6600 [L625A] 3330MHz 1.375Vcore 24/7
Core 2 Duo E6600 [L640F] 3330MHz 1.475Vcore
Crucial 10th Anv 2 x 1GB DDR2-667 @ 463MHz 4-4-4-12
ASUS P5B Dlx
FOTRON BLUE STORM 500W
TT BT with stock Fan
Gigabyte Nvidia 7600GSw/ Silent Pipe
WD Cavier 250GB
Antec P160
I wonder how a 3500+ clawhammer would do in that graph? worse than winnie?
DFI LanParty UT NF4 Ultra-D
AMD Athlon 64 X2 4200+ | Stock
OCZ OC3200 EL Platinum Rev. 2 1GB kit | Stock
OCZ PowerStream 520W
Thermalright XP-120 heatsink with Panaflo M1A fan
eVGA 6600GT | Stock
From anandtech's talk with AMD...Originally Posted by saaya
Top story there today... the talk with AMD. There is more to it than Turion.Much as we suspected, all of the power optimizations that went "into" Turion 64 are all transistor level optimizations. Basically, selecting transistors that provide better thermal and power characteristics at the expense of lower switching frequencies.
Hehe, this answers all the "Why should i need a Venice" threads and posts.
True, all these folks thinking they are going to overclock Turion to 3GHz + are sadly mistaken. AMD has traded transistor speed for lower power.
The parts to overclock are the Venice/San Diego parts.
That's a 1% improvement over Winchester in that benchmark... not exactly thrilling, but better than no improvement at all.
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