Bottle Neck ISSUE PLZ HELP!!!

All depends on what applications your thinking 'bottleneck' and what your 'expected performance level is'. For example if you want to do a 100 column by 100 row Excel spreadsheet calculation, you will get one set of performance as compared to rendering 30minutes of your home made animation video as compared to Triple Wide Screen playing BF3 at Ultra settings. Each requires different 'focus' for performance so you need to do your homework (and be ready to pay) if your expectations are that hight.

That said, at this time NOTHING beats the Intel iCore series, for CPU power. AMD's fastest ultra gaming CPU only gets up to a i5Core CPU (here is your CPU your thinking in comparision http://www.cpubenchmark.net/cpu.php?cpu=AMD+Athlon+X4+750K+Quad+Core) . Also you would need a good Hard Drive (get a off the shelf it will be a slow 5400RPM), or better yet a SSD + HDD set of drives to run fast for loading the OS and large apps but the storage you need to have all the data / games / etc. Memory comes into play as well, normally the rule was 2x the memory of the number of CPUs (So your case 8GB minimum), but also helps to have the latest type of RAM if your MoBo can accept it (all depends). Then comes the Video Card, and that works nicely but DEPENDS what your expecting it to do, 240Frames on BF4 across three 40" inch LCDs during a massive mutli rocket hit bu the Helo???? Or you talking you can Minecraft nicely???

Of course all this doesn't include the COST for Windows (which your having to buy seperately as you CAN NOT move your Windows from your HP/Dell/whatever to a new computer!!!).

As a suggestion, Black Friday is coming up, if you shop the week or two before hand, you can score a simple i5Core, 500GB HDD, Simple video card, Windows 7/8, 6-8GB RAM for around $250. As your targetting a 'desktop' (these things are very few these days) you can then spread the rest of the money to getting a Power Supply (yes important) that can support the video card you want, swap that out in the 'new system' then install the video card. You save plenty this way as compared to piece meal and you get BETTER performance then the HIGHEST END AMD CPU sold.

The AMD is below the level of a i3Core plainly put (i3 is for casual low end use, say Grandma to Email / watch a you tube video). It will work, but depends on your 'version of well'. If your expecting 60FPS or higher, you will be in for a serious shock. Here is http://minecraft.gamepedia.com/Hardware_performance which shows different hardware used in Minecraft, for example a i7 Core at the bottom of the list there is cranking 600FPS (no mistype there), and I personally have a older i7 Core and run BF3 around 50FPS or better (64Player matches with settings on Ultra). So you get the idea?

I upgraded to a 670M, and while it helped alot (from a ATI 4870) I also am using a I7 core (1st gen). So when I upgraded the video card it didnt' get 'bottlenecked' waiting on the CPU to tell it what data it needs to render and what data the CPU/other components will do. So upgrading the video card does not always double performance if your still hampered by low end memory/HDD/CPU. Yes you will see a increase, yes you can display better resolutions, but no you won't 'double performance' just because of the Video Card changeup.

Remember the software (Windows, Drivers, Games) had to load from the HDD (reason alot of people ADDED a SSD to *REMOVE* the bottleneck) in 'chunks' to the RAM first.
*1* So if the HDD is 5400RPM it takes a while to get that to the RAM, then the RAM has to pass it to the CPU to decide what to do next.
*2* If the RAM is low end (which your only on DDR2 while DDR4 is about to be released for 2014) as your is, you will bottleneck here slowly 'filling up' enough data to pass to the CPU.
*3* Your CPU is rated way low end (Below a i3 core as I explained) and so will take alot more CPU effort to perform tasks (see here on the % of the CPU used when playing BF3 http://www.techspot.com/review/458-battlefield-3-performance/page7.html). Which means more 'effort' to perform the job the other guy's computer is NOT having to 'wait on'. The longer (Bottleneck) it takes to decide, oh this is a input to move the mouse left left then dodge right, and when it is OH yeah here GTX670 can you render this Jeep for me; the longer it is before your able to 'react' in the gameplay.
*4* then we finally get to the GPU at this point. As you can see though if you have (which you do on #2 & 3) low end equipment, it will take a while no matter how raging fast your GPU is, before data gets to it to do 'rendering' on the screen.

I would still refer back to my $250 suggestion, as it would be a better, cost effective (and saving you alot of money) approach, so you immediately get DDR3, iCore performance, etc. with only minimum upgrading (PSU and Video Card, maybe splurge for a SSD) which WILL more then double your performance, depending on what you get of course.