actually single card benchmarks show that the 690 is a bit faster than the titan
yeah but 690 is an SLI card. Get two Titans then compare :)
you're right, but still, the question is "single titan or single 690"
Titan. Definitely.
I'm getting a new processor. Do I have to have that processor's specific heatsink, or can I use my current one?
Hey, welcome. I used that machine before you as well, it's pretty good for 775!It wouldn't really be worth it to get the $400 model as you wouldn't see much of an increase in performance. Plus, with the HP, you're running on the last generation Intel processors which really aren't that bad, and I wouldn't drop that for AMD.If you're looking at doing an entirely new build, I'd recommend looking for just a case to start. Get yourself a larger, nicer chassis and put all the guts from the HP into the new chassis, and then over time you can upgrade everything piece by piece - starting with the HDD(s), then the Graphics Card, then the motherboard/processor/ram all in one show. Of course, you'll also want a good power supply.That way, by the time your build is done, you'll have a really good system that you learned to put together yourself - you'll know how everything fits together and how everything is compatible and incompatible with the last generation architecture and the 1155 or 2011 architectures.
If you really mean Heatsink, you should be fine if you're upgrading to a newer CPU as long as your motherboard supports said heatsink, and the heatsink is large enough and powerful enough to transfer the heat of a newer CPU.If you mean Socket, depending on how old your motherboard is you may have to buy a new motherboard to support a newer processor.
There's no such thing as "Single" GTX 690 because the card itself contains 2 GPUs.