R2 System:
- OCing, allowing for an unlocked Intel Core i7-3770K to be used instead of the i7-3770
- Better CPU Heatsink/Fan, for the OCing
- Tweakable BIOS
- Get rid of that BIG 3.5" HD and replace it w/a more energy efficient 2.5" laptop HD, allowing for either a 2nd HD, or an SSD to be installed. It'll also allow the saved energy to go torwards a better Video Card.

- RAID 0, which will require a new Chipset, for RAIDing either four (4) Laptop HD's, or four (4) SSDs, w/the present Case Design.
- A better WiFi card. The present one sucks. I replaced mine w/a Killer Wireless-N 1102 Network Adapter , which works much better.
- Bigger power supply, for a better Video Card
Tweaks for the Present System:
- OCing, allowing for an unlocked Intel Core i7-3770K to be used instead of the i7-3770
- Tweakable BIOS
- Sadly, the present Intel Chipset, the H61 Express Chipset, won't support RAID 0.

- Get rid of that BIG 3.5" HD and replace it w/a more energy efficient 2.5" laptop HD, allowing for either a 2nd HD, or an SSD to be installed. It'll also allow the saved energy to go torwards a better Video Card.

- SSD Mounting Hardware Kit, offered for present owners of the X51, to make it easier to install a SSD. Dell just started offering an SSD in the X51, which surely needs a special mounting kit.
- Replace the present WiFi card w/a better one.
- Bigger power supply, for a better Video Card
I haven't had any issues w/noise on my X51, so I so far have no complaints about the present Heatsink/Fan.