http://img21.imageshack.us/img21/5521/multix21.jpg
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lol subzero and 5GHz is easy with this setup :p:
i did some testing and i was doing some benching at 5GHz and lower MHz looked at logs and saw no drops.......
for those ppl that suggest dropping the B2B to 10 or 12 havea look at your RAM bandwith....its an absolute shocker. The otehr thing you could do is up your VTT volts which will allow for high bandwith with bios choosing 0 automatically so i guess it depends on how much you really need all that extra bandwidth :up:
S1N3: I added your log file to the last post on the previous page and an explanation. Your picture shows that this bios version is still having a problem with disabling turbo throttling.
If you can, cross flash your v2 board to the 0006 v1 bios. I haven't seen any problems reported with that special bios version at higher MHz than you're running.
Is your i7-920 a C0 stepping. They seem to hit the wall sooner than the D0 CPUs.
Here's a link to the 0006 v1 bios if you're interested in trying this.
http://www.mediafire.com/download.php?00qfon2wlkd
Here's the cross flashing 101 manual:
http://www.xtremesystems.org/forums/...&postcount=521
Thanks Amurtigress.
so what happens exactly guys
does the multi just drop to non-turbo multi during load????
i tired with prime SmallFFTs and Blend at 4.6GHz or 4.7 with 1.47vcore and the multi was still on turbo 25x
This is my DO cpu, my CO could never hit 4.2. I should have my single stage phase in a few days, maybe I'll hold onto this Bios till it's installed and then revert too the 0006 if I still see the issue.Quote:
Originally Posted by unclewebb
Thanks for your help
dinos22: I posted S1N3's log file at the end of the previous page so you can have a look at what happens during turbo throttling.
Have a look at the CMULTI (Calculated Multiplier) column and scroll down. It starts out nice and steady at 21.000 which shows the turbo is fully engaged. At 22:08:01 is the first sign that it is starting to cycle. The previous second shows the load meter starting to act funny. The average multiplier on all threads has dropped down to 20.856 and as he continues to test and things heat up, the average drops lower and lower.
The lowest I see is about 20.6. What this number means is that turbo mode is engaged approximately 60% of the time. It's using the 21X multiplier 60% of the time and the other 40% of the time it is only using the 20X multiplier. That's not too good.
The multiplier on these CPUs can be cycling back and forth hundreds of times a second between 21 and 20 when this is happening. At this level, there's a good chance that CPU-Z would still be showing a nice steady 21 multiplier but that doesn't adequately tell a user that something is going on. His screen shot of RealTemp shows a multiplier of 20.7 which is also a warning sign of turbo throttling in progress. If he was testing with LinX it would probably drag it down to 20 full time.
At 22:09:43 in the log file, just as the load starts to decrease, the multiplier starts to recover and 1 second later; no significant load and the multi is happily back up to its maximum of 21.000. No more turbo throttling.
As I said before, this is a perfect example of what happens during a turbo throttling episode and also shows how precise i7 Turbo is at detecting this problem.
dinos22 your killing me 5Ghz ! eazy as pie :clap:
lol thats all I'm shooting for with chilled water :rofl:
Thanks for the crossflash link unclewebb :D
I have the P6T vanilla and I'm too having this turbo-throttling problem you describe :(... while stress testing it starts at 21 but after a couple mins it just starts jumping between 20-21, and it ends up being more at 20 than 21 ... i'm using cpuz to monitor, and latest bios from ftp (though this didnt seem to happen much with earlier versions)...Quote:
Originally Posted by unclewebb
noob question what exactly causes this turbo-throttling? :confused:
well next week i've got a TV show with audience and :banana::banana::banana::banana: and 20L of LN2 to crack as high a frequency as i canQuote:
Originally Posted by HDCHOPPER
i think they'll be given ballots to vote on frequency they think i'd get....lol watch some smartass put down 8GHz or something stupid lol
too bad it's one and only gem CPU i have so i have to baby it hehehehe and too bad this P6T DLX isnt called EVGA Classified :rofl:
It's a protection mechanism built into the CPU by Intel. This paragraph from the Intel Turbo White Paper explains that it can be triggered by several factors.Quote:
noob question what exactly causes this turbo-throttling? :confused:
1.2 Dependencies / Algorithm
Intel® Turbo Boost technology core frequency upside availability is ultimately constrained by power delivery limits, but within those constraints, it is limited by the following factors:
• The estimated current consumption of the processor
• The estimated power consumption of the processor
• The temperature of the processor
--------------------------------------------------------------------------
CPU-Z is not the best tool to monitor turbo throttling. Give i7 Turbo a try and it will accurately report the average multiplier for each thread. It makes it very easy to see when this problem first starts to happen. When you back off your overclock, you will see the multipliers steady at 21.000 but no one around here likes to do that. :(
Some motherboards give you the option to disable this safety feature in the bios and some manufacturers decided to ignore this safety feature so their boards will not start to throttle back. The Asus P6T series gives a user no way to turn this off. Asus has been nice enough to try and create some special bios versions to work around this issue for enthusiasts but there's still room for improvement and so far there's no special bios available for the vanilla P6T.
Post a screen shot and send me an i7 Turbo log file that clearly shows the problem on your board and I will be happy to forward it to Asus.
Edit: Another user, infected_, still sees turbo throttling with this new 0001 bios for the v2. You might as well stick with cross flashing 0006 for the v1 onto your v2 board as documented in Post #1403 above.
i flashed the new bios, but it keeps throttling :S do i have to do anything special while flashing or post-flash operation in the bios options?
http://img4.imageshack.us/img4/6087/69085565.jpg
thanks,
infected_
ok.. cross-flashed the 0006 bios, and no more throttling :D will have to wait until Asus engineers make the proper corrections to the non official 0001 bios for the p6t dlx v2....
infected_
Unclewebb thanks, here's the ss and turbo log of a Linx test i just did at 205x21 (4.3GHz), vcore 1.36v, VTT 1.3v
http://thumbnails6.imagebam.com/5515/33119855147713.gif
Full log of that run: http://pastebin.ca/1661095
Hope it helps...
Thanks nanamiSpecial. I think some early versions of CPUID Hardware Monitor used to interfere with the timers that i7 Turbo uses and would give incorrect results. That doesn't look like the problem here but for future reference, it's best to test with as few monitoring tools as possible. CPU-Z, RealTemp and i7 Turbo all get along with each other and are sufficient for testing purposes. Disabling C1E and setting your Power Options -> Minimum processor state to 100% also eliminates these two variables for causing this problem.
Asus already knows that the P6T has turbo throttling issues but now you have to wait to see if this board ever makes it to the top of the priority list for them. I'll send them your screen shot after they contact me about the 0001 v2 bios that so far seems like a bust.
What customisations?Quote:
Originally Posted by road-runner
Hello.
I bought recently a P6TD deluxe and want to know if the bios 0006 ( no more throttling ) is compatible with my motherboard ?
Second question : are extreme version of nehalem without TDP limitation ?
thanking you in advance !
All Nehalem CPUs have TDP throttling. It's up to the motherboard to give a user the option to turn this feature off. Sadly, the P6T series doesn't include that option.
When the Asus rep asked me last week what board should be next to get a special bios, the P6TD Deluxe was my answer. It looks like they'll have to fix up the 0001 v2 bios first. I haven't heard of anyone cross flashing the 0006 v1 bios onto a P6TD Deluxe.
Edit: You should contact angelreaper here on XS. I'm not sure what his board was originally but he has cross flashed back and forth with a variety of v1, v2 and P6TD bios versions so it looks like it's possible. Here's a few posts about this:
http://www.xtremesystems.org/forums/...postcount=1193
Thank you very much for the quick answer , unclewebb .
So , i am going to wait the special bios .
Do you know if it will be an official bios and where it will be possible to download it ?
Asus has said they will never include the ability to disable turbo throttling in any of their official P6T bios versions, ever.
If you're brave, you could try cross flashing the 0006 v1 bios on to your P6TD Deluxe. Contact angelreaper. He knows more about this than I do.
Any special bios versions that I get, I post them on XS. Send me a message once a month if you want to be kept informed. I'm not sure if Asus has anyone else distributing these special bios versions. They are mostly designed for the Xtreme guys at XS, when they work that is.
All right .
I wonder whether best is not to buy another motherboard ?
Evga classified , why not ? :cool:
Hi iam just starting to learn about OC the I7 on this motherboard and i have a question that i cant seam to find awnswer to.
Ok so i have my Mems at 1.6v how does this afect Qpi/dram voltage ?
And it safe to use for example Dram Voltage at 1.6 and Qpi/Dram Voltage at 1.3 ?
My 920 isnt a big overclocker iam trying for 4.0 but i can only get it stable at 1.296v but at 3.8 i got it rock stable at 1.184v :/ kinda disapointing.
Iam using Qpi/Dram voltage at 1.24v for the 3.8 setup and dont know if bumping it up would help .
Thanks in advance
No turbo throttling with p6td bios ? :shocked:Quote:
Originally Posted by angelreaper
Are you sure because i wonder if i keep my p6td ( not tested yet ) or buy another brand ?
I'm seeing throttling now also. It was much worse last night showing a steady 20x during LinX at 21x200 1.32v. This run got down to 20.8x.
http://i580.photobucket.com/albums/s...-7-20-1T-6.jpg
You mentioned on the previous page that you originally thought that everything was OK. Core temperatures over 80C plays a big part in this.Quote:
deachus: ....and there is no throttling at all while running LinX @ 4280Mhz HT On.
Do you know what temperature you were running at before?
You should try cross flashing with the 0006 v2 bios to see if your turbo throttling issues go away.
This new and improved 0001 bios is definitely a disappointment, especially after waiting so long for it.
I did say that but ran some more tests and it's throttling. Don't know why it didn't that time but it did on my last 2 runs.