Check the internet for the Dell part numbers below.
The Dell X51-R2 330w PSU part is Y90RR and XM3C3. * You should not use any retail video card that uses more than 150w on our 330w power supply * The retail video card should not be bigger than 9.8" x 4.7" * The best video cards that we validated were = YX6VC AMD Radeon R9 370X, 4GB, DVI-I/DVI-D/DP/HDMI H4P1K Nvidia GeForce GTX 960, 2GB, DVI-I/DP/DP/DP/HDMI
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