Here's the situation...my new desktop got shipped back to the factory due to mega problems. Tech support called and said they need to downgrade my computer in one aspect but will upgrade my video cards to compensate for the downgrade. The problem is i'm not sure if the supposed upgrade is actually an upgrade. Here is a list of the video cards in question. These are my orginial cards..... DUAL 1GB ATI Radeon HD 3870 X2-Quad GPU Technology These are the cards they say are an upgrade.... DUAL 512MB GDDR5 ATI Radeon HD 4870 with Crossfire Technology These are the cards i think would be an actual upgrade... DUAL 2GB GDDR5 ATI Radeon HD 4870 X2 with Crossfire and Quad GPU Technology I'm not that tech savvy, but need to know the facts before making a decision on what to do. Any feedback is appreciated and thanks.