@masterdev It is important to have a multi-meter and voltage terminals on your motherboard if you are going to try this out. My ram will idle at 1.676v from the multi meter reading but in bios it's set to 1.64v, under gaming load it drops to 1.674v. Now do you see why it's important to use a multi-meter to test your voltages? And the most important thing I mentioned was NOT to have the VTT and dimm volts > (greater than) .50v e.g. my CPU VTT is 1.250v (it defaults to 1.20 and I added +50mV = 1.250v) My ram needs 1.674v for stability. The difference is 0.424v which is < .50v. The other important thing I mentioned was NOT to go over 1.350v CPU VTT (mine is 1.250v)
EDIT: recent overclocking has pushed my CPU Vcore to 1.356v for 4.51GHz stability. It idles at 1.346v and under IBT load it pulls 1.363v, gaming ~ 1.349v
Did you buy it from eBay. Is there other place to look at that you could recommend?
The W3690 runs extremely hot for me. It was very hard not to load it fully and cool down. The specs temperature threshold is very low compared to the "X".
I might go with either X5680 or X5690.
Compared i7-980x runs at 67.9°C, X5680 runs at 78.5°C, which is awesome and the Xeon supports higher bandwidth.
What clock are you running the memory at? I've heard that the "W" series can't run the memory stable at over 1333MHz, is it true? Is it the same with the "X"?
I'm planning to buy memory soon. Do you know, if the "X" series would support 16GB modules? I really would like to try 4 x 16GB.