Best CPU for the Mobo

[Problematic93]

Hey guys. Sorry if this is an already asked question but I have been googling and Tom-ing for hours. I'm trying to find the best CPU for a DFI Lanparty X48 Dark Edition Motherboard. It's an LG775 Socket and I'm on kind of on a tight budget so doing a full Mobo swap is out of the question.

Here's the Specs I can find right now for my current build(I say current because I have 4GB of ram on the way and soon to buy a second GPU for crossfire)

OS Name Microsoft Windows 7 Ultimate
Version 6.1.7601 Service Pack 1 Build 7601
OS Manufacturer Microsoft Corporation
System Manufacturer OEM
System Model OEM
System Type x64-based PC
Processor Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz, 2333 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Phoenix Technologies, LTD 6.00 PG, 3/20/2008
SMBIOS Version 2.5
Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 4.00 GB
Available Physical Memory 1.59 GB
Total Virtual Memory 7.99 GB
Available Virtual Memory 5.33 GB
Page File Space 4.00 GB

GPU
Name ATI Radeon HD 5500 Series
Adapter Type ATI display adapter (0x68DA), ATI Technologies Inc. compatible
Adapter Description ATI Radeon HD 5500 Series
Adapter RAM 1.00 GB (1,073,741,824 bytes)
Installed Drivers aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Driver Version 8.850.0.0

The case is an old Alienware Aurora that I cut and modified to fix the ventilation issues.

Side note: I have seen something about modifying some of the older server processors to fit with a sticker of some sort? Is this a viable option?

Thanks for any and all help.

 

[seafire01]

You could get a Q9550 for around 40 bucks on ebay. Much better performance for the mobo. For $60 you could get the Q9650 and get a little better performance than the 9550 but you'll be satisfied either way.