Upgrading a pre-built pc

I have a HP pre-built computer that I want to upgrade. My computer is the HP Pavilion p6607c. Heres the specs.

I am on a tight budget of around $400 What I want to upgrade is the Cpu, Ram, Mobo, and Gpu. My friend did the exact same thing as I am trying to do right now and his computer is exactly what fits my needs. I have a couple of ideas and the same components that he used.

CPU - AMD Phenom II X4 965 Black Edition


RAM - G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Dual Channel Kit Desktop Memory

GPU - SAPPHIRE 100282XTREME Radeon HD 5850 Xtreme 1GB 256-bit GDDR5 PCI Express 2.1 HDCP Ready CrossFireX Support Video Card with Eyefinity

If you guys know of any cheaper builds can you please tell me? I've been told that the 5850 for 140 is a heck of a deal but I want to go cheaper with the GPU even if it sacrifices some graphics power. Also, is the mobo, cpu, and all that junk gonna fit inside my case? Is it even necessary to get another mobo? Will the Phenom II X4 be compatible with the mobo already inside the prebuilt computer? I'm planning to do a little overclocking so is it necessary for me to get a fan like the Hyper 212+? Please help!
4 answers Last reply Best Answer
More about upgrading built
  1. It accepts am2+ cpus but only up to a TDP of 95watts.
    So for example the phenom2 x4 945 would be pretty much the highest clocked with l3.

    And then there's the Phenomx4 840 which is pretty much an athlon2 since it doesn't have l3 cache. Never understood why they named a phenom when it doesn't have l3 cache...

    anyway your going to have to buy a new powersupply. The system comes with a 250watt one which is not enough. The 5850 is a solid buy especially for the price but suggested PSU is 500watts. Buy something from a reputable vendor like antec, xfx, corsair and not some cheapo hyper super XXX 700watt $20 psu.
  2. Quick question, what it be smart to upgrade my cpu to a Phenom II x4 945 and leave my mobo alone? I wouldn't need another PSU would I? Or would it just be best upgrade everything including my mobo,cpu,gpu,ram,psu.
  3. Best answer
    You can upgradethe CPU without a psu upgrade, but you won't be able to upgrade to the 5850 without a psu upgrade.
  4. Best answer selected by jungkyu.
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