This is what the guys in the forum are suggesting:

Newegg.com - SAPPHIRE 100253HDMI Radeon HD 4650 512MB 128-bit GDDR2 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Low Profile Ready Video Card - Desktop Graphics / Video Cards
or
Newegg.com - Galaxy 96GFF6VIFCXU GeForce 9600 GT 512MB 256-bit GDDR3 PCI Express 2.0 x16 Low Profile Ready Video Card - Desktop Graphics / Video Cards

And the guy is suggesting the ATI card, and it's looking like a winner at $70 lol

What you think Pen.