This is really about the memory requirement, although 2GB is the minimum that MS says for 7 64 bit, it's just not enough. The video card takes 256MB, so that leaves 1.75MB to run 64 bit Windows 7 on. Performance was pitiful. Windows 7 64 bit really needs 3GB RAM to run good. 4GB is considered my many experts to be the "sweet spot" for 64 bit 7. 32 bit, I know little about, but would imagine that 1GB wouldn't be enough for many users. Out of 4 computers (2 of which are XP based & lower) 2GB is my minimum.
Around early 2010, I upgraded my desktop to the max, using Crucial's online tool, I discovered that it would take 4GB RAM, and a faster speed than what shipped with it. The upgrade cost me nearly $100, but it was the best $100 that I spent on the PC. About all one can do with an all-in-one PC is to upgrade the RAM & HDD, I done both.
The desktop has an anemic dual core AMD Athlon X2 3250e running at 1.5GHz, I'm considering this one, when the warranty ends.
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But like I stated, I'm just considering it. The HP's BIOS is so neutered, I don't know if I can even take advantage of the multi-threading & other options that it offers. All that I know is that it's fully compatible with the MB.
Windows 8 CP is certainly running well on it, as is. Come Windows 9, or whatever it's named, I'm going for a new PC, & it won't be of the AIO type, & will have much higher performance.
Cat