Good luck milking that system for 10 years, because it is fairly likely that 4 GB video cards will be the minimum requirement for AAA video games within 5 years time. Plus, you'll likely be burning up a ton of money in electricity running an inefficient 15 year old computer -- While I will likely get much better performance upgrading to more efficient video cards and CPU's. Pennywise, and very pound foolish. I'm actually a little shocked.... Because electricity in America is relatively cheap, it's probably way more expensive where you live.
The 660 Ti is actually pretty damn power hungry:
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Its strange that you bring up the power consumption issue when the AMD FX cpus are less efficient and power hungry compared to Intel Ivy/Haswell/Broadwell. And also talked about the advantage of being able to overclock on the FX earlier in the thread.