Asus P6T / Rampage II Extreme: no "CPU VR Current Override" ???

[BustaH]

Temps are the stumbling block. Basically, here is my take on the i7 TDP limit behavior on the Asus boards and based on what I have observed in the past with GPUs and over-current protection circuits...

There is a 130W TDP limit on the chip and that cannot be turned off on Asus boards. Now, say that you set your voltage on the i7 920 at 1.4V for a 20x200MHz (21x turbo). This means that the maximum current can be 130W/1.4V ~ 92.85A before you will exceed the TDP limit. However, increasing temperatures cause more current leakage and hence the current increases further and beyound the allowed limit. If you can keep the temps down, you reduce current leakage and you stay below the TDP limit. If not, well, we all know what happens then.

Asus sort of screws us double with this TDP limit IMO. Increasing the volts to stabilize higher OCs while having the TDP limit on causes the current threshold to lower as you increase the voltage requiring better and better cooling, not just because of the sheer fact that higher voltages will produce higher current and more current leakage, but the current gets to be too high and exceeds the TDP limits.

Annoying...

The weird thing is earlier today this board booted and run wprime [only 32m] @200x20 with turbo and ht on @ 1.38vcore/1.4qpl/1.65 mem [1600mhz] I did the run in close to 6 seconds flat. temps shoot from idles around 37/38 ish up to 80's and up. so there is where the leak occurs that you describe dejanh.

It gets VERY frustrating at that point because with a result like that you KNOW its definitely not the chip or the ram, its the issue that you guys have described here. Im not at all technical minded when it comes to vr overide and such like but I can see the pattern even in 'simple terms'

I so hope Asus do hope sort this out fast, I think this is actually very unfair that this issue even exists..imo without a doubt Asus do make the best boards by far [performance] im just completely baffled that they are procrastinating over this surely we deserve what we paid for?

[dejanh]

See, I personally never went for the high-end boards as I found the upper-mid ones tend to actually be better somehow, lol. Maybe it's just my frugal side acting up, getting more bang for the buck. This time I went for the R2E and it is a bit of a headache for sure that's emphasized by the fact I paid 450 smackers for it. I really, really hope they remove the TDP limit.

I even found a combination on my board that gives me 4.2GHz and 1900MHz DRAM at a lower voltage cost than 4.2GHz with 1600MHz but I cannot use it as I need to make use of the 23x turbo multiplier which shuts off every time when temps get past 80-ish celsius.