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Compatible GPU for Dell Vostro 420 running Win 7 64 bit

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  • Dell
  • Monitors
September 19, 2014 11:13:09 AM

I purchased a used Dell Vostro 420 Core 2 Duo. It is running an Intel at 3 Ghz and I upgraded the RAM to 8 Megs. I’m using a multiple monitor setup; however, am having problems with the lag time between the two monitors (not sure if it is a RAM issue). It takes a 4-10 seconds for the monitor to respond to a mouse click. The second monitor is hooked up via a 2.0 adapter and I am assuming that both monitors are running through the onboard graphics under the motherboard.

The system is running Windows 7 64 bit and unfortunately, Dell only support this machine for a 32 bit system, even the prescribed GPUs only supports 32 bit. I had purchased:
Dell NVIDIA GeForce GT 220 1GB DDR3 PCI Express

When installing the hardware and changing the BIOS to PCI Express, the card is not recognized and I am told that it is incompatible. When installing the card driver, it tells me that it is an incompatible and is only supported under 32 bit. Based on these parameters, what option of GPUs do I have? Your tech knowledge is appreciated.

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