Intel Pentium G840


Jul 31, 2011
I was going to purchase the Intel Pentium Dual-Core G840 2.8GHz Socket LGA1155 Processor 3MB L3 Cache) and would like to know if it is compatible with the Intel DH61WWB3 Core i3/i5/i7 Socket LGA1155 DDR3 SATA PCIe Gb LAN 5.1Ch Audio mATX Mainboard ? It says Socket LGA1155, but I just want to be 100% sure before I take anything furher.

P.S I have choosen this mobo as I would like to upgrade to i5/i7 core when I get a bit more money and/or they reduce in price which I am aware they use a LGA1155 Socket mobo ?

Thank you
the g840 should work fine with any 1155 board; it doesn't have hyperthreading, so the price is lower, but it has two cores, which should be fine for most tasks. If you want a faster cpu, I recommend you save about $40 more and get the 2100. Frys had it for $79.99 recently.


Aug 2, 2011


May 6, 2011
One thing I have noticed about some of these boards is that many only have a PCIe 3 x16 and others only have a PCIe 2.0 x16 slot, and the ones that have the version 3.0 slot say that it ONLY works with the i3/i5 and i7

So does that mean you can ONLY have the onboard graphics from the CPU if you have a chip like a G840? Other than using an old PCI video card which will probably be just as slow anyway

Or can you still put a PCIe 3 video card into the slot but it will only work at PCIe 2.0 speeds? As I cant seem to find anyone explaining this anywhere

Or does it mean to have a discreet video card you have to purchase a board that only has a PCIe 2 slot like the intel Q67SW board for this CPU to work with a PCIe video card?