Quote Originally Posted by saaya View Post
what vtt setting?


yeah, thats the thing with xmp... there isnt any certification, anybody can create an xmp profile and ship it out and it could potentially have 2.4v vdimm and 1.1v vtt programmed in it too, which would kill the cpu or can damage the mem... thats why ive never been a big fan of xmp... and most mainboard makers dont like xmp

about qpi dram voltage... well initially asus called the bclock/qpi so then it kinda made sense to call vtt qpi/dram clock cause more vtt means a higher bclock/dram clock is possible... but like i said, thats just confusing in the end.
i hope people will stick to vtt... vtt is already well known from c2d and c2q anyways, even though it was a different voltage.

yeah but are you sure the xmp sets higher vtt?
or xmp sets vdimm and the bios then automatically increases vtt to adjust it to vdimm?

i asked our contacts at corsair, ocz, adata and gskill as well as intel and they said they dont know about xmp setting vtt? 0_o supposedly theres an xmp spec v1.2 but none of our engineers received it and when they asked their intel contacts they didnt know about it either...

i guess it does exist but wasnt really promoted/sent out very efficiently... or maybe many people ignored it cause nobody really likes xmp that much


k, thanks... i guess ill just continue to email intel guys until somebody knows about the 1.2 doc and can send it to our engineers

sorry to hear about that
Saaya,
I know you work with Foxconn, but I ntoced this when watching things on my Rampage II Extreme.

Conditions: Voltages Set "Auto", Set XMP DDR 1600 Profile, No OC's, Boot To WinVista64, Open TurboV, Check Voltage, Test Voltage Via ProbeIt to verify.

I know you have the experience to get to the voltage points directly on the board. If you wanna verify it, you can do it the same way i did above using Foxconn's Dekstop OC Util (assuming you guys have one), and measure the QPI/DRAM (Vtt) on the Board. I'd also keep an eye on the vDelta's, and watch for any bugs in case something decides to runaway. I haven't seen any runaway, but a user did report that in another thread here (sorry cannot find it now), and sent his board in to be looked at.

I was extremely careful, and really cautious with things related to emmory Subsystem, becasue i knew this stuff was new, and if I found anything it could potentially help alot of people, and save many greif. I also knew I had a 1000 dollar CPU, a 400 dollar motherboard, and 350 dollar RAM in there and I didn't want to screw it up, so *that* made me even more careful.

It's an easy test to set up. It might even make QVL's interesting!