Got my HD2600XT ddr4 today!

[Jannu]

I had the same problem. The problem is that the X1650 and HD2600 series use unique mounting holes and require a specialized 3rd party cooler. I am not 100% sure but I don't think the VF900 will work either. Last time I looked on Newegg, they only had like 3 coolers that were compatible with the X1650 and/or HD2600 series and that was a few months ago.

Because of this issue, that was one of the big reasons why I bought the MSI HD2600XT GDDR4 Diamond OC edition card. It comes pre-installed with a very nice high performance cooler that semi resembles an AC Silencer.

VF-900 fits perfectly, installed one on my gigabyte's ddr4 2600xt today. Noiseless, max load ~50c