Best CPU for Motherboard HP 0A58h(Xu1 Processor)

Hi I'm currently using HP Compaq dc7700 Convertible Minitower PC with motherboard Hewlett-Packard 0A58h (XU1 PROCESSOR) and plan to upgrade my processor. Can you guys suggest the best CPU for my PC?
Reply to suki9191
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  1. Best answer

    It's an OEM computer so you're not really going to be able to do much. Most of the CPU's that you can use in that motherboard are kind of old and out dated now. I would save the money and start saving up for a new computer.
    Reply to rds1220
  2. Best answer selected by suki9191.
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  3. Maybe a bit late for the OP, yet there's many of these former business/corporate PC's sold off lease for as little as $69, what I paid for my HP dc5800 SFF PC. Shipped with a Intel Core 2 Duo E8400, and though I could had went with a Core 2 Quad 9650, didn't because of the low profile 1GB GDDR5 GPU that came out of my XPS 8700 when new, just had to install a low profile bracket, it's the same card that Dell used on many PC's of that era, and also has a UEFI BIOS. Bought another like it for $36 for my Optiplex 780 DT edition, which in size not much larger, which runs a Intel Core 2 Quad 9650, which was installed already.

    Had I been running onboard graphics, would had pulled the trigger on at least a Q9450, though the Q9650 runs at 3.0GHz, both has a 12MB L2 cache (so does the popular Q9550), and can hang with many off the shelf PC's of today, especially the sub-$500 market.

    Here's the Speccy snapshot of the upgrade I performed, and yes, has ran for nearly 23 hours non-stop.

    If only there was a 300W PSU option for the PC, wouldn't hesitate to pull the trigger on a Q9650/9550/9450. Even the lesser of the three is stout w/out Turbo Boost, which none of these has. Being an OEM PC, means no overclocking, but at this age, one should care for their PC than look to run it at very high temps.

    My point of this post are that these PC's are upgradable, including GPU & SSD. :-)

    Reply to catilley1092
  4. Intel® Core™2 Duo CPU E7600 @ 3.06GHz

    This is the fastest CPU I have gotten to work with the HP dc7700

    CPU-Z Validation
    Reply to phiajeat
  5. That's kind of surprising, considering that the dc7700 is newer than my dc5800, with the latest BIOS update, ran a E8600 (3.33GHz), and shipped to me with a E8400 (3.0GHz) from Newegg. Since I posted the link above, the BIOS has crashed, tried to revive it, thought it was going to go through, then crashed again.

    I believe it was the Windows 10 upgrade that did it, until that point, the PC ran fine. Will give it a couple of more tries at reviving the BIOS, if it won't go, have plenty of computers, will strip it down, saving all screws, connectors, RAM modules, anything that can be reused & throw the rest on the large recycle bin outdoors. I have more modern computers to play with, and spend cash on, was a shame that I purchased 2 sets of RAM (2GB x2) to max it out at 8GB, and probably worse, attempt a Windows 10 upgrade, however it ran the Previews fine, so had no idea that the upgrade would corrupt the BIOS.

    Lesson learned, not to upgrade 10 year old HP computers to Windows 10, oddly, have a Optiplex 740 that's 11 years old running it well, though w/out a SSD (no AHCI option), and only SATA-2, some of that era were still 1st gen SATA.

    On Page 2 of this discussion, there was a quote that implied that if the microcode was updated, your dc7700 would run most any 45mm Wolfdale CPU.

    "For 45nm Wolfdales just ensure you use the 2010 microcode update 1.06 for any 786E BIOS.
    It was good of HP to allow Wolfdales at all on these boards, but HP why can't you please go that bit further for us loyal customers?'

    Good Luck with your computer & sorry that you couldn't upgrade further, though I suggest that you not give up on an upgrade yet. Pursue until you've ran out of options, that's how I've managed things over the years.;-)

    EDIT: Here's the Intel Microcode for the HP dc7700 for Intel CPU upgrades.

    More info including snapshot of the microcode, which clearly shows it supports 1066MHz CPU's (second link).

    Reply to catilley1092
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