Windows 7 & DFI UT X58-T3EH8
This is a discussion on Windows 7 & DFI UT X58-T3EH8 within the DFI Intel Motherboard / CPU forums, part of the Intel motherboards / CPU category; Tested with special vid add = auto no probs with 21x turbo multi under load or at idle...
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|13-05-2009, 02:33 AM||#34 (permalink)|
Proof that cpuz reported cpu multiplier fluctuations in Windows 7 is cpuz related as both realtemp 3.20RC4 and coretemp 0.99.5 reported right 21x multi all the time
|13-05-2009, 03:56 AM||#35 (permalink)|
Join Date: May 13 2009
I just posted this over on XS. Hopefully the i7 Turbo Tool will help you figure out any issues you're having with your reported multipliers. This tool uses the same method that RealTemp uses. The only difference is that RealTemp rounds off the results to the nearest 0.5 while this tool tells it like it is.
With Core i7 there are two ways to read the multiplier. You can read it directly from a model specific register (MSR) within the processor or the Intel Turbo White Paper recommends that you compare two high performance timers within the CPU every second and calculate the average multiplier.
The i7 Turbo tool uses both of these methods so you can compare. Calculating the multiplier at full load is the most accurate way to read the multiplier but most software doesn't do this because it is a lot easier to just read one value from an MSR. Using Intel's method to calculate the multiplier when the CPU is idle is not 100% accurate but it's pretty close. It may result in the odd random value but 99.9% of the time it seems to be accurate at idle as well. Constant fluctuation at idle in the calculated multiplier is usually a sign that your Minimum processor power state in your Power Options is not in agreement with your EIST/C1E bios settings.
When running high stress programs like LinX, this tool is the best way to check that Turbo mode is staying fully engaged. As soon as the multi starts to drop at full load, that is a sign that Turbo mode is starting to cycle rapidly on and off.
Edit: The Turbo Mode Disable feature in this tool only works if Turbo mode was originally enabled in the bios when you booted up.
|13-05-2009, 04:21 AM||#37 (permalink)|
Join Date: May 13 2009
Here is a link to RealTemp 3.20 RC4
RealTemp has been using the calculated multiplier since it first started supporting Core i7. Many thanks to rge on XS who originally sent me the Intel Turbo white paper so I could add this feature.
Last edited by unclewebb; 13-05-2009 at 04:38 AM.
|14-05-2009, 11:07 AM||#40 (permalink)|
Join Date: Mar 25 2009
Location: Oklahoma City
Well there is no way explanation for this as I had the 21 mult working as I stated before on 2 of my 5 Windows 7 installs. One of those installs reverted back to the 12 mult after 20 minutes of use so I wiped it and put Vista back on it. Well I hooked up my last working Windows 7 hdd last night and it was working with the 21 mult all night. I shut my computer off last night with it working at 21 mult. Get home today, haven't changed a dang thing, turned on the computer and what do you know. 12 mult!!!
There is no explanation for this as nothing was changed in the BIOS. Nothing at all. I simply shut my computer down with a 21 mult and started it back up to a 12 mult. Here is a pic of cpuz, real temp, core temp and i7 turbo open all showing 12 mult but on boot it showed 20 mult, with turbo enabled it will be 21 in windows. High performance is enabled as well. Some of you might be lucky and have a 21 mult at all times but the fact of the matter there are people that don't and so far this is only limited to DFI mobo's. DFI needs to be aware of this problem as I am sure it is on their end. This is bootleg as all bootleg gets and is very frustrating.
The second pic is with SuperPi running with 8 iterations into the 19 iterations complete of a 1m run. 12 mult still going there to. You think it would at least kick back up to 21 mult or hell even 16 mult but no it is stuck at a 12 mult still.
Last and not least is a screen shot of everything at default (Load Optimized Settings) and I'll be damned if every utility is showing a different mult. Real Temp and I7 Turbo are showing the same. On my other previously working copy of Windows 7 when I did a "Load Optimized Settings" and ran it at default it would have a 21 mult, this one doesn't. So now I am really confused.
Last edited by DrNip; 14-05-2009 at 11:41 AM.
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