After setting up my P5K Deluxe the other night, I decided to start off with my old trusty E6600 B1 ES cpu so as to be able to compare temps and results with my other motherboard adventures with the same cpu. The P5K Deluxe shipped with 0123 bios but was updated to latest 0304 bios and flashed using USB drive and Ez Flash 2 in bios. You can see the bios screen shots here. Asus P5K Deluxe Photos Notes: - Will be continually updated as I progress. Update to 0304 bios to fix the incorrect cpuz reported cpu/memory clock and timings. Asus P5K Deluxe supports cpus from 800FSB and upward. But doesn't support 533FSB cpus. Read here. Added: June 13th, 2007: Confirmation from bingo13/Gary from Anandtech here, black dimm slots are designed to be optimised for higher memory clocks/low latency clocks compared to yellow dimm slots. I found this out went revisiting Corsair 10000C5D Dominators in black dimm slots here. Heads up for folks with PS/2 mouse, these new Asus P5K/P5K3 Deluxe boards removed the mouse PS/2 port in favour of USB mouse devices. So if you have a PS/2 mouse you'd either need to grab a USB mouse or PS/2 to USB adaptor http://www.auspcmarket.com.au/show_product_info.php?input[product_code]=CB-SKUSBPS. Unfortunately, for me that particular adaptor didn't work with my KVM switch mouse PS/2 connector cable so a USB mouse was needed. Recovery from failed overclocks seems to be much better on Asus P5K Deluxe. Just turning off from power switch and powering psu off, wait a bit and power psu back on and power up would initiate the recovery mode - I see the bios detecting cpu at default 9x266FSB for my E6600 so i can F1 back into bios to set proper settings. No need for clear CMOS so far Memory dividers available on Asus P5K Deluxe depend on the FSB Frequency set. Not all FSB Frequencies have all dividers available for them (well for 266FSB at least haven't tested the rest yet). At 266FSB you have access to DDR2-667 (4:5), DDR2-800 (2:3), DDR2-889 (3:5), and DDR2-1067 (1:2). Photo At 333FSB there's DDR2-667 (1:1), DDR2-800 (5:6), DDR2-833 (4:5), DDR2-1000 (2:3), DDR2-1067 (5:8), DDR2-1111 (3:5), and DDR2-1333 (1:2). Photo At 400FSB there's DDR2-800 (1:1), DDR2-960 (5:6), DDR2-1000 (4:5), DDR2-1200 (2:3), DDR2-1280 (5:8), DDR2-1333 (3:5) and DDR2-1600 (1:2). Photo At 500FSB there's DDR2-1000 (1:1), DDR2-1200 (5:6), DDR2-1250 (4:5), DDR2-1500 (2:3), DDR2-1600 (5:8), DDR2-1667 (3:5) and DDR2-2000 (1:2). Photo Seems for at least 1:1, 4:5 and 2:3 dividers AUTO subtimings are set pretty tight, performing in Super Pi times just behind manually set subtimings of 3-30-8-3-6. CPU Voltage Damper option in bios reduces vcore droop by as much as 75%. From approximately 0.032v droop to 0.008v droop! Finally, Asus answers our prayers in regards to vcore droop Transaction Booster bios option when enabled, seems to boost memtest86+ v1.70 reported memory bandwidth. By default Transaction Booster is set to AUTO, but when Enabled or Disabled a sub menu appears in the form of levels. When enabled, Transaction Booster gives you an option to select 2 Boost levels of 0 or 1. When disabled, Transaction Booster gives you an option to select 3 different Relaxed levels between 0-3 - level 0 at least looks the same as AUTO set Transaction Booster in memtest86+ v1.70 bandwidth. Interesting to note that for tests at 9x444FSB 1:1 4-4-4-4 2-20-2-2-2 at 2.1v vdimm that Transaction Booster AUTO and TRFC = 20, memtest reports 5383MB/s memory bandwidth compared with TRFC = 25 or 30 at 5201MB/s. But at TRFC = 20 if you enable Transaction Booster with Boost level 1, memtest still reports 5383MB/s. Could it be Transaction Booster Enabled just manipulates a tighter TRFC or other subtimings values ? Without memset for windows we won't be able to see what the subtimings are for real for now though. The Stilt has figured out the strap changes for P5K Deluxe/P35 chipsets http://www.xtremesystems.org/forums/showpost.php?p=2243939&postcount=17 .