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Making the most of a 300w PSU

Hello,
I've been searching the forums on scores of sites looking for someone with my specific problem. I just want to know if I can replace my 45w CPU with an 89w one without overloading my power source. I bought a budget Dell Inspiron 546 last year and now I want to max it out without replacing anything intensive (motherboard, PSU, CPU cooling.) Here are my current specs:

Dell Inspiron 546
300w PSU
320GB 7200rpm SATA Hard Drive
2.8ghz Athlon le-1660
780G AM2-based motherboard
2GB 800mhz DDR2 (2 Dimms)
Gigabyte Radeon HD 4550 (128mb DDR3 w/Hypermemory)
USB mouse, keyboard, and webcam

I am dead-set on replacing my weak video card with an HD 5670, which draws 62w max. I want to know if my PSU can handle another 44w on top of that (upgrading the single-core athlon le-1660 to a dual-core athlon x2 5800+. And also if the stock CPU cooling fan can handle the heat (I do not overclock.) If not I think I'll get either an athlon x2 5400+ (65w) or even an athlon x2 5050e (45w).

Thanks!
6 answers Last reply Best Answer
More about making 300w
  1. Best answer
    The afore mentioned combination will be fine on that PSU.
  2. So even though I'll effectively be adding over 100w to the load, I shouldn't have problems with the PSU being overloaded?

    Also is there a big difference between the 2.6ghz 5050e and the 3.0ghz 5800+? I am planning on doing some gaming. Aiming for High settings and 60fps at 1024x768 resolution. On pretty much every game I can get my hands on.
  3. You'll be fine.
  4. Okay thanks guys.
  5. Best answer selected by jessterman21.
  6. Athlon II x2 250 + HD 5670 works perfectly, I even overclocked the card about 10%
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