Fresh header with saturated colors. Got a nice friendly feel to it.
You might want to play around with the alignment so that the horizont in the header images aligns with the background image. Would create some symmetry.
Also, is the white line between the two images transparent by design or by mistake? Think I would prefer to have it white like the rest of the white border.
You might want to horizontal adjust this line as well to have it align with the sidebar further down on the page. Once again, symmetry.
The logo area would need a bit of attention as the contrast is too low. The gray "Xeon" blends in with the background and the blue glowing "Gradient" looks a bit fuzzy due to the glow. If possible I would adjust the color of the text (brighter) and remove the glow. If you can't adjust the logo (as it often happens in the real world) then I would burn the background right behind the logo in order to make that part darker and thus increase the contrast. A third option could be to play around with a drop-shadow, much like you did with the upper part of the logo.
I would remove the glow around the first content area as it makes it unsharp and fuzzy, or at least add a 1px stroke before the glow.
DeFined04 already mentioned the lack of contrast in "WHO WE ARE".
I find that the three shadows above each look a bit strange, but that maybe that is just me. I would try with either one shadow or none.
Overall the design need some typographic love. Tiny, non-aliased text was maybe OK 5 years ago but hardly anymore. Small increases in font-size and leading make a huge difference in readability and usability, well worth the increase in vertical space.
Consistent use of company name. In the logo you have "Xeon Gradient", at the bottom of the blue area "XEON GRADIENT" and in the footer "XeonGradient".
Puh! Sorry for the long post and I hope you don't hate me too much. Just trying to give ya some constructive criticism.
Overall, the design has potential and with some polish it would be even better.
BTW There is a great article about web design polish over at PSDTUTS - [link]