I am looking to upgrade my original AGP card that came with my Dell Precision WorkStation 450. I would like to get the best card available that my current system can handle. I have 1.5 GB of memory and two 2.4 Ghz CPUs with hyper-threading enabled on each. I believe it has a 360 Watts Power Factor Correcting (PFC) power supply.
It appears the best card would be an HIS Hightech H385F512ANP Radeon HD 3850 512MB 256-bit GDDR3 AGP 8X HDCP Ready Video Card available from newegg. However, I am concerned about my power supply. It appears this card wants 450 Watt or greater power supply with 75 Watt 6-pin PCI Express®. I don't have any six pin connectors and the supply is only rated 360. I believe you can get an adapter to take two 4-pin power connectors and make a six pin one. However, the wattage would still be too low.
What is the best AGP 8x card I could get given the power supply limitation of 360 watts?