Get 2GB more RAM. 4GB is just fine, don't listen to anyone who says you need more (unless you're doing some serious photo or video editing).
What graphics card do you actually have? I can only find 5470, 5450 and 5430. I suppose your system just says "Radeon 5400 series"? Anyway, it can't have 2GB of VRAM from judging the price and the other specs of those cards.
Your CPU is decent, although if you want more power, Intel i5 is the way to go. The 2500k is the best CPU for gaming out there. It is actually the same as the i7 2600k except that the 2600k is better in video editing. You do need to buy a new motherboard for that CPU, though.
A 64-bit OS doesn't "drain" any more system resources than a 32-bit system. 64-bit system is more powerful if you have a 64-bit CPU and you are running a 64-bit program. Not going in to detail how it works, though. 32-bit OS can only utilize ~3.3GB of RAM, so if you have more than that with a 32-bit OS it just goes to waste, as the OS cannot use more than the 3.3GB.
SSD would be a good choice if you want more speed and you have the money. It is not necessary though. It just makes loading times shorter, and it is quite expensive compared to a normal HDD. I'd suggest you to upgrade your other components first, and then if you have money, buy a SSD.
What graphics card do you actually have? I can only find 5470, 5450 and 5430. I suppose your system just says "Radeon 5400 series"? Anyway, it can't have 2GB of VRAM from judging the price and the other specs of those cards.
Your CPU is decent, although if you want more power, Intel i5 is the way to go. The 2500k is the best CPU for gaming out there. It is actually the same as the i7 2600k except that the 2600k is better in video editing. You do need to buy a new motherboard for that CPU, though.
A 64-bit OS doesn't "drain" any more system resources than a 32-bit system. 64-bit system is more powerful if you have a 64-bit CPU and you are running a 64-bit program. Not going in to detail how it works, though. 32-bit OS can only utilize ~3.3GB of RAM, so if you have more than that with a 32-bit OS it just goes to waste, as the OS cannot use more than the 3.3GB.
SSD would be a good choice if you want more speed and you have the money. It is not necessary though. It just makes loading times shorter, and it is quite expensive compared to a normal HDD. I'd suggest you to upgrade your other components first, and then if you have money, buy a SSD.
The biggest problem of the human race is that they cannot accept that there is nothing after death.
