To help you guys DFI again have shipped me two absolute final revision NF4 boards to test.
I have been qualifying OCZ memory on the Ultra D now for 14 hrs and can pretty much now comment on how the boards overclock ram.I have tested with the following modules listed below and will post results here in this thread. I also have some huge news that is under NDA and I will post this also as DFI release me to do so...please don't ask...i will post as soon as they say go
Tested modules.
3200Plat rev2 =TCCD
3500Plat = BH5
3500EB = Micron EOL
3200VX
4200EL = Hynix BTD 43
4400gold = Hynix CTD5
4000gold rev2 = Hynix DTD5
As you can see I have been pretty busy, none of the above are cherry modules, infact some are actually fails which needed a little extra juice.
Now im using an IDE HDD and have sound, USB, ports etc all disabled. The PCIe bus is locked and can be independantly manipulated.
You have already seen the board has the ability to run Vdimm off the 5vline. What you don't know is that i found heat became an issue with the dimms on load at high voltages.The mosfets have heatsinks and you are going to cool them for stability. I have chosen to tweak the 3.3V line up to 3.6V on my powerstream and this allows 3.5Vdimm or so and does seem more stable for me.
Bios is pretty much the same as the 250UT with the addition of 8 Dram drive strength values and increased vdimm and vcore.So if you are used to tweaking the NF3 your going to slot straight into tweaking the NF4 . Chipset voltage does help when overclocking and async ram clocking does work quite well.
Both the ultra D and the SLI board share the exact same PCB. All that is missing on the ultra D is a SI raid controller Chip and 4 sata port and obviously they have a different chipset. regarding SLI etc i will add comment later in the thread. For now im just using an ATI X700 pro and a 3800+ cpu air cooled. No fancy phase change so results are pretty much what you can all expect as a base line.
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