- Sep 10, 2004
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2.8 GHz at 1.4v, or 3.0 GHz at 1.525v for 24/7 use?
- Thread starter Ricemarine
- Start date
Since the DFI mobo overvolts by 0.025+...underload you are running 1.55+
what are your temps?..if they are in 46-48C...It should be ok
persoanlly I use 1.5v on DFI SLI DR as max and want temps below 50.....
the real key is how long do you want this chip?..3yr or les..stay at 3.0GHZ sounds great
BTW that is an incredible OC on a 165..congrats
- Sep 10, 2004
- 10,507
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My temps
38 C idle
50C load
My dfi Mobo actually undervolts by 0.025v, odd huh?.
But hum... 3 years... Depends, can it last 5? :laugh:
Hmm...undervolts..so idle is 1.525v....and load is 1.5v....
actually I think it looks good...I have no idea if this can last 5yrs...I had a P2.4@2.9 for 3yrs without a hiccup and cpu is owned by someone else and runs fine
Do you feel a difference at 3000 vs 2800...if so stay at at 3GHZ...I still prefer 1.5v but hat is me...
BTW what is your cooling
I just got some Gskill DDR 500 what are you settings and speed? waht bios and are you using orange or yellow slots
I placed them in yellow slots with bios 623-2....
I have downclocked my 170 to 2600 and run memory 1:1....
@225 with my crucial(3-3-3-10) ram my super1mg was faster by 1 sec vs 260mhz on Gskill but timings are at 3-4-4-8
actually I think it looks good...I have no idea if this can last 5yrs...I had a P2.4@2.9 for 3yrs without a hiccup and cpu is owned by someone else and runs fine
Do you feel a difference at 3000 vs 2800...if so stay at at 3GHZ...I still prefer 1.5v but hat is me...
BTW what is your cooling
I just got some Gskill DDR 500 what are you settings and speed? waht bios and are you using orange or yellow slots
I placed them in yellow slots with bios 623-2....
I have downclocked my 170 to 2600 and run memory 1:1....
@225 with my crucial(3-3-3-10) ram my super1mg was faster by 1 sec vs 260mhz on Gskill but timings are at 3-4-4-8
are you air cooling this beast?
get a better cooler? I'd slap a TT BigTyphoon on it, some wicked Delta fan and see if'n it'll do 3.2 @ 1.6v. Which sounds like some sexy 24/7 settings if you ask me. ON AIR. are you going to have this CPU in two years? honestly?
seriously, though I think you should just sell me the chip
- Sep 10, 2004
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Thermalright XP-90 with 92mm nexus 27cfm/19 dba fan. I got tired of loud noise so to speak.. I'm still trying to get a better silencing case... Heh. I'm running 254 Mhz 166 MHz divider, 3-4-3-8 1T orange slots (you're supposed to run in 2 and 4)... I'm using the 6/23/2005 bios as well.
- Sep 10, 2004
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I don't really think there's going to be much of a difference... Unless you care to take part in explaining
New BIOSs can make worlds of difference overclocking.
I'd go with 3Ghz; or a nice point in between. If you can do 2.95/2.9 on 1.45v; then by all means do that.
-T
I'd go with 3Ghz; or a nice point in between. If you can do 2.95/2.9 on 1.45v; then by all means do that.
-T
2.8 for 24/7 use, unless your doing something that required every scrap of extra power. It'll be cooler, quieter, and the performance loss won't be very noticable. IIRC Experts with DMMs have said that the DFI nForce4 Ultra-D (SLI-D and SLI too) overvolt by about 0.06v when under load with DC processors.
Originally posted by: Ricemarine
I don't really think there's going to be much of a difference... Unless you care to take part in explaining
I wish I could. It's mostly voodoo using different bios on these DFI LP boards, imho. There are three separate romsips, -1,-2,-3, so 623-2 uses -2 romsip...you get the idea.
don't know why exactly, but for instance my Mushkin XP4000 UCCC goes to 268mhz 3,4,3,8 1T on the 623-2, but can hit 272mhz on the 704-2BTa bios (<< bios modded by Tony "Big Toe"). And I have troubling running stable at any settings using -1 bios from any build. The 623-3 was best for my Corsair value ram. I had to try a few out to find the best one.
something I had not experienced with other boards before, but it makes a huge difference.
Actually you out to measure w/ vmeter how much the vcore is. There are reports that it can be as much as 50mv overvolting.
I guess this overvolting is a way of cheating the end users, thinking their board can overclock w/ little vcore increase. Never mind the poor soul doesn?t understand why his cpu is dying or why so "HOT"
"hey I can overclock my....on this DFI w/ only 1.35v vcore"
oops I forgot to mention it, its my 3rd cpu RMA on this DFI board.
I guess this overvolting is a way of cheating the end users, thinking their board can overclock w/ little vcore increase. Never mind the poor soul doesn?t understand why his cpu is dying or why so "HOT"
"hey I can overclock my....on this DFI w/ only 1.35v vcore"
oops I forgot to mention it, its my 3rd cpu RMA on this DFI board.
Someone is jealous he doesn't have DFI. Here's someone who not only beat your challenge with a 3000+, but a dualcore Opty 165. 1.8GHz to 3GHz, on a DFI no less. I'd definitely go with 3GHz @ 1.525. My DFI also undervolts and the temps match such a thing. If your temps are reasonable with reasonable noise (you said you don't like it loud), then by all means take the extra performance.
Elfear
Diamond Member
- May 30, 2004
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Is everyone saying there DFI is undervolting because of what your voltage monitoring software is telling you or because of what you've measured with a multimeter?
Personally, I'd go with the 2.8GHz for 24/7 use. I guess I'm just a worrywort or something, but I have more peace of mind knowing my chip is only receiving an extra .05V rather than .175V for 24/7 use. Gaming and benching is different and I usually crank up the clock speeds for that.
Personally, I'd go with the 2.8GHz for 24/7 use. I guess I'm just a worrywort or something, but I have more peace of mind knowing my chip is only receiving an extra .05V rather than .175V for 24/7 use. Gaming and benching is different and I usually crank up the clock speeds for that.
why would I be jealous? I am not that kind of person.
As matter of fact I do have an opteron 146 that does >3ghz. but I just leave that subject be, no need to hijack this thread.
It is always a good idea to measure w/ vmeter. temp monitoring software or the bios itself are not reliable.
and yes, use lower oc/vcore, for sake for keeping your good chip intact. Do your benchmarks and find your ocing ability "for trophy" and self satisfaction, but choose to be practical and lower the speed and voltage.
Good Opteron are hard to come by and are expensive.
I read from OCZ about 6mo ago..they found no matter chip on ram they preferred -2 bioses..
In my case my old crucial valueram had 5G chips??, Micron..it liked 623-2 bios best in the the yellow slots
orange did not seem to work or 704-2BTA bios
granted the GSKILL DDR 500 is dffernet I popped them in last night ..yellow slots, 623-2 and ran large fft quick test at 260....my 0546 xpmw at 2700 could never run ram this fast..at 2600 it is run 1:1 now(I know a lower clock but lower vcore too)
The DFI are testy when it comes to ram ....way too much to tweak...
I am considering giving the 704-2BTA(from what i read this bios was best for joe sick pack at DFI street..ie easy to put together and get to run out of the box..did not guarantee better OC)
I may try orange as well...I do find the bios reports a bit overvolting on the ram..set 2.6=2.68 in yellow wonder if orange does this too
The DFI UltraD/SLI DR overvolt..I generally see people report .025-0.03...unfortunately with my SI120 I can not get my DMM easily to location for testing
In my case my old crucial valueram had 5G chips??, Micron..it liked 623-2 bios best in the the yellow slots
orange did not seem to work or 704-2BTA bios
granted the GSKILL DDR 500 is dffernet I popped them in last night ..yellow slots, 623-2 and ran large fft quick test at 260....my 0546 xpmw at 2700 could never run ram this fast..at 2600 it is run 1:1 now(I know a lower clock but lower vcore too)
The DFI are testy when it comes to ram ....way too much to tweak...
I am considering giving the 704-2BTA(from what i read this bios was best for joe sick pack at DFI street..ie easy to put together and get to run out of the box..did not guarantee better OC)
I may try orange as well...I do find the bios reports a bit overvolting on the ram..set 2.6=2.68 in yellow wonder if orange does this too
The DFI UltraD/SLI DR overvolt..I generally see people report .025-0.03...unfortunately with my SI120 I can not get my DMM easily to location for testing
You're comparing a single core 2.2 GHz chip running at 3 GHz to a 1.8 GHz dual core running at 3 GHz? Talk about apples to oranges!
Plus what was all of that "I'm on my third RMA" BS about the DFI boards? They're the overclocker's favourite for a reason, and I assure you it's not because they fail often!
Actually, I'm fairly sure most DFI LP boards overvolt. According to my digital multimeter, 1.540v in bios is loading at 1.55v. Software reporting is wildly innaccurate.
Elfear
Diamond Member
- May 30, 2004
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That's the consensus I've heard too. That's why I was asking everyone who reported their boards undervolting if they came to that conclusion from the voltage monitoring software or from using a multimeter. All the software I've used has reported less volts than what the bios was set at which seems wrong according to the guys who have measured volts with a meter.
gotcha, and I think you are absolutely right.
my actual idle/load as measured by DMM are 1.546v/1.55v when Vcore is set in bios to 1.40v+110%= 1.540v
software reporting...idle/load for each:
bios 1.54v/na
CPU-Z: 1.504v/1.52v
ITE SmartGuardian: 1.50v/1.52v
MBM 5: 1.50v/1.52v
so software in Windows reports under actual voltage by ~ .05v idle and ~ .035v load.
Ricemarine, why dont you use the maximum overclock + vcore but enable Cool & Quiet to lower voltage at idle/low utilisation? That way you get the best of both worlds. I'm presuming here that CnQ works with dual core cpus these days (wasn't there a bug in the past?). I have to use 1.55v to get my measly 2.5GHz overclock on a 144, but when I'm doing noddy stuff like surfing, CnQ lowers the multiplier to x5 & the vcore to 1.25v which gives the cpu a rest, keeps the fan noise down & consumes less lecky. And I dont even notice that I'm running a 1.4GHz processor.
Does it overvolt by the same amount for all the BIOS/vcore combinations? I remember reading some post at XS saying that the amount by which the vcore is off varies with the percentage setting, the BIOS being used and possibly also the board revision.
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