[amd655]

Ok, i managed to sort out the bios for the 1155 rig, but now there seems to be some discrepancy with temperature readings.

Now before the motherboard had a bios flash, 4.5ghz would land the 2500k at around 70-75c under OCCT, but on the motherboard readout, it now reaches around 82c, however RealTemp and CoreTemp show 65-71c which sounds right...

Here is what is happening, a photo of the board readout, and a screen shot from screen of OCCT running in background.



Here is the weird reading...



Also at idle, temps are way high on the motherboard readout, idling at 47-53c, but in the temp softwares, 30-37c.

I am a little puzzled, and this bios flash has done nothing but screw things around so far.

 

[ChaosAD]

Maybe with this bios update they changed the cpu temp reading sensor, or maybe it reads the socket temp which is always hotter than core temps, you dont know for sure. Both realtemp and coretemp are both very accurate programs for cpu temp reading. You cant go wrong with any of them, so dont worry at all. Your temps are just fine.

 

[amd655]

Quote:

Originally Posted by ChaosAD

Maybe with this bios update they changed the cpu temp reading sensor, or maybe it reads the socket temp which is always hotter than core temps, you dont know for sure. Both realtemp and coretemp are both very accurate programs for cpu temp reading. You cant go wrong with any of them, so dont worry at all. Your temps are just fine.

I was thinking it was reading from elsewhere, or just a out of tune sensor, thanks for this info

 

[aznpersuazn]

It doesn't hurt to reinstall both temp reading programs to make sure there isn't any issues.

 

[amd655]

Ok, i just rebooted the machine at it's stock frequency, the motherboard temperature readout still idles at 50c, so this would lead me to believe it is either the sensor got messed up with the new revision bios i flashed, or it is reading elsewhere.

 

[amd655]

Ok, i will just post up some bench results making sure everything is ticking over ok on the system.

Running the ram out of spec currently (loose timings)

Ok, 4.5ghz with nothing else tweaked and the 480 at it's nominal OC.

http://www.3dmark.com/3dm11/6973715

 

[amd655]

Ok guys, some vastly huge improvements here.

I am currently in windows at 5.1GHZ at 1.36v.......

And i also managed to flash to a different bios, which was the A05 version, i already knew my 2500k is a 5% lucker that can do 5ghz at 1.4v, but this is taking the pi$$ don't you think?

I have yet to test stability, but i will be over the moon if this holds stable.

 

[amd655]

 

[amd655]

Ok, i had to redo my Windows Aero assessment, so i did that, max temp under the CPU test was 69c, the CPU actually peaked at 5.2GHZ, it seems i have enabled some sort of dynamic overclock, with all 4 cores under stress, the CPU will max at 4.8ghz at 1.65v according to CPU-z, but when 1 or 2 cores need the extra, it will ramp up to 5.1-5.2ghz, which i just love the fact it can do this, Vcore also went to 1.388 at 5.2ghz.

I think i learnt something new today

 

[amd655]

Ok, 3D Mark run, compare this to my last if you wish, but this is quite a large bump in performance, and remained solid stable throughout.

http://www.3dmark.com/3dm11/6974539

Here is temps for the run.



Well it seems the CPU reached 5ghz under 3D Mark.

Last run on crap bios.

http://www.3dmark.com/3dm11/6973715

 

[amd655]

As you can clearly see here, 4 cores in use hitting around 4.9GHZ, but staying around the 45-50c range.



Game is running maxed at 720p windowed, so i can create a more CPU bound situation, plus it shows the temps and clock whilst playing.

 

[amd655]

Ok, i found that trying to install Medal of Honor Warfighter caused it to hang (the process) so i have bumped voltage up a notch, now the baseline voltage is 1.38v, temps look to be almost the same.

The installer now works and is installing.

Reason for MOH is the Frostbite engine, a game that will crash any unstable OC.

Voltage will now auto increase to just over 1.4v for clocks exceeding 5.0ghz ( this chip is stable at 5ghz at a fixed 1.4v voltage)

Over 5ghz will only be 1 or 2 cores, 4 cores will max around 4.9-5.0ghz, keeping me hopefully stable at all times.

The 2 core clock boost will help in emulation and other games that are 2 threaded and CPU limited.

 

[amd655]

Ok guys, been playing Warfigter for 2 hours solid, the machine feels very responsive, and FPS has improved quite a lot, surprising considering the GPU that is in it...

I am waiting for stock and the 2500k will be paired with a EVGA GTX 780 Classfied

Not a single hint of backing down, which is incredible.

 

[amd655]

Proof below of how CPU taxing Frostbite is.



Hottest temps produced yet, but this was 2 hours.

 

[amd655]

Ok, been running her smooth over 24 hours now... this CPU is a beast....

Not a single heat or instability issue at all.

The only thing that did do my head in was waking the PC up from sleep, i will disable this in windows, as i do not think it plays well with OC'd settings.

 

[amd655]

Ok, a fantastic OC, Prime95 flowed perfectly fine with no crash, but i had to cut it early, as temps were hitting on the high side with 85c on the hottest core.

Not bad for a H100 really, but i want to play it safe at least, going to set the frequency to 4.6ghz at 1.33v

 

[malmental]

let me go back and investigate this thread...