Phenom II x2 555 BE vs Phenom I x4 9850

Hello internet!

I've recently had a massive problem with my PC after a power surge knocked out my motherboard. I was running this system:

Windows 7 Ultimate
AMD Phenom x4 9850 (2.5 GHz)
2GB DDR2 400 MHZ (2 x 1gb)
ATI Radeon HD 5750 512mb
An MSI motherboard that cost £30, microATX. Can't remember the exact model and its since been binned.
CiT 700w PSU

Anyway, I bought a new motherboard from eBuyer and unfortunately it was DOA. Me, being an idiot, didn't realise and bought a new CPU and ram thinking that could be the problem. After recieving these parts, I sent back the motherboard and got a replacement but now I'm unsure which CPU to use. The new system is:

Windows 7 Ultimate
AMD Phenom x4 9850 (2.5 Ghz) OR the AMD Phenom II x2 555 (3.2 Ghz)
2GB DDR2 800 MHZ (1 x 2gb, will possibly get another 2gb stick soon)
ATI Radeon HD 5750 512mb
Gigabyte GA-M68M-S2P Motherboard
Corsair 430w PSU

I've heard that I can maybe unlock two extra cores on the dual core which seems like that would make the 555 significantly better. Otherwise, I have no idea. The extra clock speed might be useful. I will mainly be using the computer for gaming so keep that in mind if you help me make the decision. Also bear in mind that the Quad Core was preowned when I bought it and has gone through a power surge, so it could possibly be damaged slightly (I have no idea if a power surge can damage things without completely destroying them though)

Thanks in advance for your help.
9 answers Last reply
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  1. Hi and welcome to Tom's forum.

    Go with the Phenom II X2 555, is newer and overclock much better that your 9850.
  2. It will overclock better as in, if I overclock both of them to the max then the 555 will be better or if it will just overclock more?
  3. The 1st Phenom generation isn't a good overclocker series, maybe you can't go above 2.8GHz with the 9850.
  4. It also depends on what you do. If you're looking for normal office tasks or gaming, the Phenom II x2 555 will be the better choice. If you only do multi-threaded apps, the 9850 might be better.

    Overall, I would pick the 555.
  5. Could you give me some examples of multi-threaded apps please? I don't know all that much.
  6. Video editing, encoding, ect. Here's a few articles that go into detail. What do you use your computer for? If you have both processors, you could do your own benchmarks with the apps you use.

    By the way, I think the 555 has the potential to be unlocked to a quad core, but I wouldn't count on it.
  7. I heard that the 555 can be unlocked but that's dependant on your motherboard and I bought a fairly cheap motherboard so I'm probably going to try it but I'm not banking on it.

    Errr, I do a little bit of video editing and encoding but not too much. I'd rather have better performance in games than anything else. I also use quite a bit of Photoshop, Illustrator and Cubase SX5. Would they benefit from 4 cores?
  8. You can see the comparison of both 9850 and 555 here:
  9. saint19 said:
    You can see the comparison of both 9850 and 555 here:

    That's very, very helpful and exactly what I needed. I'll go with the dual core. Thank you!
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