I have actually decided to give up on the ASUS A8R32-MVP Deluxe in exchange for the new DFI LANParty UT CFX3200-DR. On closer investigation it appears to be a far better solution for overclocking.
The primary reason I say this is that ASUS has apparently decided to remove (or simply not include) support for increased voltage to the CPU! I couldn't believe it, and their advertizing is highly misleading.
"Core Voltage: Adjustable CPU voltage at 0.025 V increment"
This comes right off their website and also the latest version of the user manual, which came out almost a full month AFTER their latest BIOS release.
"vCore - Find out "exactly" how much power your CPU needs. Fine-tune it with 0.025 volts at a time!"
Er, unless I'm missing something its going to be rather trying to find out exactly how much power my CPU needs by taking power away from it incrementally, be it "inch by inch" or by the metric system!
What blew my mind is that its true, the board does support incremental voltage adjustment, however what they fail to tell the consumer is that it only supports clocking DOWN! For what conceivable purpose would an enthusiast desire to underclock their CPU on an advertised as overclocking motherboard?
Needless to say, this is seriously limiting my achievable stability at higher frequencies, and many reviews Iâ€™ve read including a good one from Tomâ€™s Hardware seem to come to the same conclusion.
The DFI model benchmarked in that review was the UT RDX200. The CFX3200-DR appears to be a superior product, with â€œtrueâ€ 16x PCIE and some gimmicky network thing called â€œteaming.â€ (Sounds a bit suspicious, but oh well I guess.)
So, my question I suppose at this point is would this be my best option for high speed Crossfire and stable overclocking on an AMD 939 platform?
Also, is there perhaps a link or information anyone has showing the Big Typhoon to indeed be the best air cooling solution?
I also had another basic question. When overclocking is it best to shoot for a higher FSB value or a lower memory divider?
For example, which would be best?
255 x11 @ 166 = 2.8ghz @ 200.4mhz DDR
270 x10.5 @ 150 = 2.84ghz @ 202.5mhz DDR
280 x10 @ 143 = 2.8ghz @ 200mhz DDR
Also, what other things should I be concerned about? Are there any memory dividers to stay away from in terms of stability? (125, 143, 150, and 183 seem to be considered â€œnon-standardâ€ in some circles.)