Intel DP55KG / Core i5 750 / Core i7 870

..:: Introduction ::..

In November 2008, Intel launched the Core i7 processor based on a new microarchitecture codenamed Nehalem. This long-awaited microarchitecture brought dominant performance for the Core i7 900 series, but with that performance came at a steep price relative to Intel’s own Core 2 processors. X58 motherboards with prices in the range of $300-$400 USD are far from uncommon. This was certainly a contributing factor to a core component of the market simply being priced out of Bloomfield and X58. Intel recognized this fact, and after some delay has released the Lynnfield Core i5 and i7 800 series processors, as well as a new mid-range chipset dubbed P55. The real question is, have Lynnfield and the P55 chipset come to the rescue of the mainstream market?

It’s well known now that the Lynnfield core has had some features removed, i.e. QPI Links, however Intel has also added features such as an integrated PCI Express 2.0 controller directly in the die. This feature of Lynnfield should help to negate some of the loss of the QPI. After all, one primary use of QPI was previously to link the processor to the X58 IOH. Now that the IOH has been integrated directly into the die, we’ll benefit from lower latencies.

Another change that comes with Lynnfield is the move to supporting only dual channel DDR3 vs. triple channel DDR3 offered by Bloomfield and the X58 chipset. How much of a difference will this truly make in the end? I would initially suspect that there will not be much performance degradation in the shift from dual channel to triple channel when it comes to real world applications. We’ll soon see if this does indeed turn out to be the case.

An astonishing feat of the Lynnfield core is that it turns out it is larger than Bloomfield, yet we’re still seeing these sell at a discounted rate from the Bloomfield processors.Couple this fact with relatively cheap P55 solutions in comparison to their X58 brethren and you have what could be an excellent and affordable solution.

Today, we’ll be taking our look at Intel’s own P55 motherboard, the DP55KG, codenamed “Kingsberg”. This board boasts some impressive features, and as you’ll soon see have an added extra component or two. It’s always fun to work with board that still have debug ports and all of the engineer leftovers. Before I delve into the performance of the board, let’s take a tour around the PCB to see just what Intel has to offer with the DP55KG.