First thing I'd like to know if this is a laptop? Or you have a lenovo display?
What's the board revision? Not that it matters that much.
So do you not have any overclocking in the bios? It said MCH was at 667 so you should have memory multi control among possibly cpu multi control.
The Intel G31 chipset could handle a top chipset speed of 1500 while pushing your luck. Otherwise it's very happy at 1333 and should not be toyed with if you want your system to last more than a month.
Stick to 1333 because you have a ton of highly price efficient options that would blow any overclock you could pull off on the e7300.
If you want extra performance and your literally dirt poor yet could scrounge together $10 to throw on a walmart $1.88 prepaid visa, add visa to paypal account, and purchase a processor on ebay.
We must remove the E7300 from it's socket and careful as all get out use an exacto knife to cut the 775 notches in the socket off and blow debris away when done. Purchase LGA771 to LGA775 Xeon adapter sticker for $3 I believe.
Purchase one of many options at different price points. They all have 12 Mega Bytes of CPU cache and that's 3 whole Mega Bytes per core. There will be no less than Four Core's in these options and all at 1333mhz fsb between 80W and 120W (120W is not that hot at all on these).
Intel Xeon E5405 - 80W - 12MB Cache - 4 cores - 2.00Ghz per core at ----- $7.00 SHIPPED .. that's seven dollars.
http://www.ebay.com/itm/Intel-Xeon-E5405...1c51c64705
Intel Xeon X5460 - 120W - 12MB Cache - 4 cores - 3.16Ghz per core at ----- $27.00 SHIPPED .. that's twenty seven dollars. (Second Fastest 771 Xeon Ever) -- Much faster than a Core 2 Quad Extreme Edition and much cooler.
http://www.ebay.com/itm/Intel-Xeon-X5460...3aa9543f2a
Intel Xeon X5470 - 120W - 12MB Cache - 4 cores - 3.33Ghz per core at ----- $64.00 SHIPPED .. that's sixty four dollars. (THE FASTEST AND MOST POWERFUL XEON FOR 1333 PLATFORM).
http://www.ebay.com/itm/Intel-Xeon-X5470...419598d31c
Doing all this just perfectly because the Intel G31 chipset is highly compatible with Top-Of-The-Line Xeon's like the X5460 and X5470.
This stick is required for proper operation and successful bios post.
$2.35 FROM CHINA if that's where your from?
http://www.ebay.com/itm/Intel-CPU-Socket...20e842831d
$2.99 shipped from USA
http://www.ebay.com/itm/LGA-771-775-adap...1c4d598bb1