Dell E521 - New to building/upgrading systems systems

Alright guys and gals i'm a complete noob to building/upgrading sysptems. What I'm really tyring to get is to be able to play WoW with decent frame rates. I currently have a stock Dell E521. The new expansion is eating up and spitting my system out while raiding 25 man raids. I ideally would "ONLY" like to replace my motherboard, processor, graphics card, Power supply, and RAM.

These are the components I'm lookin to adding

1. Intel Core 2 Duo E8500 Wolfdale 3.16GHz LGA 775 65W Dual-Core Processor Model BX80570E8500 (Processor)

2. SUPERMICRO MBD-C2SEA-O LGA 775 Intel G45 HDMI ATX Intel Motherboard (Mother Board)

3. hec ZEPHYR HEC-750DR-AT 750W Continuous @ 40°C ATX12V V2.2 / EPS12V V2.91 SLI NVIDIA SLI Certified NVIDIA HYBRID- SLI Certified - 9800 GX2 CrossFire Certified Active PFC HYBRID-SLI Power Supply (Power Supply)

4. XFX PVT98GYDLU GeForce 9800 GT 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card
(Graphics Card)

5. G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D- 4GBPQ
(RAM)

I guess my question is can I just take the old parts out and put the new ones out and be fine. If not can I buy a new case put these parts in and remove anything else i'm missing from my old system and put it in the new one? REally hoping I can just take the parts out of the old one and put the new ones into the old case. Like I said I've never done anything like this before so any help you may give me is GREATLY appreciated.

Here are the specs on my current setup

Processor
Model : AMD Athlon(tm) 64 Processor 3800+
Speed : 2.40GHz
Cores per Processor : 1 Unit(s)
Threads per Core : 1 Unit(s)
Internal Data Cache : 64kB, Synchronous, Write-Back, 2-way, Exclusive, 64 byte line size
L2 On-board Cache : 512kB, ECC, Synchronous, Write-Back, 16-way, Exclusive, 64 byte line size

System
System : Dell Inc Dimension E521
Mainboard : Dell Inc 0CT103
Bus(es) : ISA X-Bus PCI PCIe IMB USB i2c/SMBus
Multi-Processor (MP) Support : No
Multi-Processor Advanced PIC (APIC) : Yes
System BIOS : Dell Inc 1.1.4
Total Memory : 2GB DIMM DDR2

Chipset
Model : AMD Athlon 64 / Opteron HyperTransport Technology Configuration
Front Side Bus Speed : 2x 1GHz (2GHz)
Total Memory : 2GB DIMM DDR2
Memory Bus Speed : 2x 267MHz (534MHz)

Memory Module(s)
Memory Module : Kingston KHU006-QIA 1GB DIMM DDR2 PC2-4300U DDR2-534 (4.0-4-4-12 2-16-4-2)
Memory Module : Kingston KHU006-QIA 1GB DIMM DDR2 PC2-4300U DDR2-534 (4.0-4-4-12 2-16-4-2)

Video System
Adapter : Radeon X1300/X1550 Series (256MB, PCIe 1.00 x16, PS3.0, VS3.0)

Storage Devices
SAMSUNG SP2504C 250GB (Fibre Channel, 3.5", 7200rpm, NCQ, 2MB Cache) : 233GB (C (D
SONY DVD-ROM DDU1615S (Fibre Channel, DVD+-R, CD-R, 2MB Cache) : N/A (E
TSSTcorpCDRWDVD TS-H493A (Fibre Channel, DVD+-R, CD-RW, 2MB Cache) : N/A (F

Logical Storage Devices
RECOVERY (D : 10GB (NTFS) @ SAMSUNG SP2504C 250GB (Fibre Channel, 3.5", 7200rpm, NCQ, 2MB Cache)
OS (C : 223GB (NTFS) @ SAMSUNG SP2504C 250GB (Fibre Channel, 3.5", 7200rpm, NCQ, 2MB Cache)
CD-ROM/DVD (E : N/A @ SONY DVD-ROM DDU1615S (Fibre Channel, DVD+-R, CD-R, 2MB Cache)
CD-ROM/DVD (F : N/A @ TSSTcorpCDRWDVD TS-H493A (Fibre Channel, DVD+-R, CD-RW, 2MB Cache)

Peripherals
LPC Hub Controller 1 : Dell MCP51 LPC Bridge
LPC Legacy Controller 1 : SMSC LPC v1
Audio Device : Dell MCP51 High Definition Audio
Audio Codec : Sigmatel High Definition Audio Codec
Serial Port(s) : 1
Disk Controller : Dell MCP51 Serial ATA Controller
Disk Controller : Dell MCP51 Serial ATA Controller
USB Controller 1 : Dell MCP51 USB Controller
USB Controller 2 : Dell MCP51 USB Controller
System SMBus Controller 1 : nVidia MCP5+ SMBus 1
System SMBus Controller 2 : nVidia MCP5+ SMBus 2

Printers and Faxes
Printer : Microsoft XPS Document Writer (600x600, Colour)

Network Services
Network Adapter : Broadcom 440x 10/100 Integrated Controller
Wireless Adapter 1 : 2Wire 802.11g USB Wireless LAN Card (802.11g (ERP), TKIP, 54Mbps)

Power Management
Mains (AC) Line Status : On-Line

Operating System(s)
Windows System : Microsoft Windows Vista Home 6.00.6001 (Service Pack 1)
Platform Compliance : x86

Windows Experience Index
Current System : 4.2

Performance Tips
Warning 100 : Large memory sizes should be made of Registered/Buffered memory.
Tip 2546 : Large memory modules should be ECC/Parity.
Tip 2 : Double-click tip or press Enter while a tip is selected for more information about the tip.

Sucess! After researching all over the web. I'm writing in hopes of helping someone. I just upgraded CPU in my Dell E521 with Nforce 430 chipset, 6150LE integrated video to an AMD 3.1 GHZ Athlon 64 X2 6000+ ADV60000DOBOX with no problems. With one exception, my bios is 1.0.3 and when I upgraded my bios to 1.1.10 , my bios wouldn't remember settings and would loop until I hit F12 and enter the boot setup, and boot into Windows. This may or may not happen to you but I had to revert back to 1.0.3. I know this topic is old but I hope it can help someone wanting to upgrade their Dell E521. This is the best CPU for the E521!!! I was able to overclock it using CBID and ClockGen. Run CBID and change the multiplier to 15. Run ClockGen and change the speed to 3.392 GHZ!!!. I guess I'm just lucky! You better buy before AMD discontinues this product!

Hey rolf thanks for the update and glad your E521 got such a great boost.

Did you upgrade to BIOS version 1.1.11? That seems to be the latest.
http://support.dell.com/support/to [...] ile=220156

Hey Rolf,
I´m very glad I found your post. I too have been researching the web for some time now for information about upgrading my E521. I was also looking at the 64 X2 6000+ to replace my 64 X2 4200+, but I don´t know if I can safely do this as I will be using the old heatsink. So I would like to ask you: What was the original CPU in your E521? Was it a 4200+ or more powerful then that? Does it make a difference? I wouldn´t want to fry a brand new cpu :|

Mainboard: 0CT103 A03
Nforce 410-430 MCP, GeForce 6150

Thanks in advance!

If your airflow is good, you shouldn't have to worry. I reinstalled my dell e521 into a plasma tv chassis to get around the freaking annoying! btx form factor case. I am running everything in open air with directed but not guided air flow and my temps are peachy. Just go for it and run an occasional temp sensor like one through SIW. Your computer should shut down before frying anything.

Also I am disturbed by the direction that the original poster went when he experienced poor gaming quality. The biggest differences you can make are: graphics card, memory, and then I/O speeds to harddrive arrays.
These fixes cost much less, and I can't imagine how you managed to find a modern motherboard in BTX....

I also have a Dell E521 and looking into Athlon 64 x2 6000+ 3.1 but I am worrying about the DELL cpu heat sink. Is there a way to replace it with a better one?