UnOfficial Asus Rampage II Extreme Thread

[CryptiK]

Ezequiel, resisze your pics before posting they are way too big. Something like 1100 - 1200 width is perfect for forums, scrolling side to side is no fun

Running ram at DDR3-2000 MHz is not easy for these i7's - even ones with a good IMC need decent Vtt for that speed. If you do some testing, I think you'll find DDR3-1600 6-7-6-X is actually faster than DDR3-2000 9-9-9-X and will require a lot less Vtt.



On another topic, I did some Vcore, Vtt and Vdimm measuring behind the CPU socket to get an idea of real voltages with LLC enabled since it was bugging me how much it seemed to over-volt on load.
I don't use LLC normally, but when benching it helps control things a little more accurately. I was also curious about Vdimm so I measured it directly at the Dimm slots.

CPU Vcore

LLC On

BIOS Set = 1.28750v

Idle:

CPU-Z = 1.280v
Everest = 1.270 - 1.277v
DMM = 1.29v

Load:

CPU-Z = 1.280v
Everest = 1.316 - 1.323v
DMM = 1.30 - 1.31v

Vtt

BIOS Set = 1.2750v
Everest = 1.224v (idle) / 1.197v (load)
DMM = 1.21v (idle) / 1.18 - 1.19v (load)

Vdimm

BIOS Set = 1.577v
Everest = 1.568v (idle) / 1.548v (load)
DMM = 1.58v (idle & load)

Seems the board actually does increase vcore by 0.02v under load when LLC is enabled. This is not good behaviour, it should not change at all, or ideally, droop around 0.01 - 0.02v.
Gigabyte implement a 2 step LLC system where you can have intel spec droop (LLC off), moderate droop (level 1) and slight/no droop (level 2). This is a much better system IMO and Asus would do well to
use a similar system. The vcore should certainly not increase under load.

Vtt is well below BIOS set voltage, idle and load is slightly lower than everest states.

Vdimm is pretty much what you set in BIOS, which is higher than everest reports and does not change from idle to load (I tried this at a few Vdimm settings).