It will probably work. PCIe devices are backwards compatible. And you do have a 16x PCIe slot. There's a chance it won't work, though. I have seen several older LGA 775 boards that will not work with newer GPU's but most do work.
It will probably work. PCIe devices are backwards compatible. And you do have a 16x PCIe slot. There's a chance it won't work, though. I have seen several older LGA 775 boards that will not work with newer GPU's but most do work.