Best AMD AM2 to OC with?

Hi all.

Please give me an idea of wich AMD AM2 CPU would give the best results AS WELL AS stability and longevity when OC'd.

I was looking to get the 6400+ BE, but I would like some input before I do so.

All suggestions appreciated.


Current System:
Biostar T570Sli mobo; 1024mb OCZ Sli RAM; 650W Thermaltake ToughPower; No Graphics yet. Looking to get Thermalright 120 Ultra cooler and 8600GTX or 8800GT.
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  1. the average 6400+ BE will get up to 3.4ghz, some going up to 3.6ghz

    im not sure about the 5000+ BE, the highest iv heard is 3.4ghz, with most going to 3.2ghz; again im not sure about the 5000+

    id still recommend a core2duo for overclocking; i heard some easily go beyond 4ghz
  2. The unlocked Multi's help, so I'd imagine the 6400 BE as mentioned above. Varies by chip, of course though.
  3. The "unlocked" multiplier on the 6400 BE is pretty pointless. You can't make it higher, only lower. I'm able to get mine to 3.4, anymore and it just crashes. But i do have to say that you probably won't get any better performance out of another AM2 chip.
  4. Thanks guys.

    I would also like to know if that 200mhz extra on the 6400+ is worth while? Should I rather leave it be?
  5. If you want to OC an AMD, I would go with a 5000+ BE or something around that range. The 6400 is already so high in clock speed, there is little head room to get much more out. But, if you wanted max performance from an AMD chip, without OCing, the 6400 would be the one to get.
  6. the 200mhz is really only noticeable while benchmarking. even while encoding movies, it only saved me a few seconds have it oc'd to 3.5ghz.

    but yeah, for pure amd overclockability the 5000+ BE is essentially your best option; although the 6400+ will still outperform.

    if i were you id get the 6400+ and keep it stock, maybe lower the multiplier and up the fsb; or just run the cool n' quiet
  7. so, a question i am still trying to solve is, what is the point of buying the 6400 BE over the regular 6400 if the 6400 BE is only unlocked to be lowered???
  8. By lowering the multipler you can maybe up the fsb more which may produce more actual speed. The CPU isen't the only part you know...
  9. perzy said:
    By lowering the multipler you can maybe up the fsb more which may produce more actual speed. The CPU isen't the only part you know...

    oh, so you can't lower the mulitplier on the regular 6400? i thought that was just an option in BIOS? i know i can with my 5200.
  10. Apparantly my mobo (Biostar T(F)570 Sli) only supports up to 5600+. So I'm looking to get the 5000BE. I've read that it can easily clocked to 3.2ghz.

    So can non-BE multipliers not be unlocked at all?
  11. non-BE can go down, not up. Right now though, the 5000BE is a pretty good deal if you already have a hsf. if you really want the 6400 (which eats more power @ probably the same speed you'll get out of the 5000), check for a BIOS update for your board. another site just had an article up about how the 125w chips can damage certain motherboards when overclocked, google and check it out.
  12. I think that 5000+BE can get as high as 6400+BE and is cheaper.I have 5000+BE on stable 3.3GHz
  13. Im using the 5600+ went from 2.8 to 3.2 and im running stable at very low temp's
  14. Non-BE (i.e. standard AthlonX2) chips can have the multiplier lowered. Black Edition chips feature a completely unlocked multiplier, meaning you can go down OR up.

    As previously stated, the 6400+ is already running near the limits of the K8 design, so you will only get 200Mhz, maybe 400 if your lucky, not enough to satisfy most OCers.

    Bottom line, if you want a nice OC get the 5000+BE, if you want top performance, get the 6400+ regular and turn your FSB up a bit.
  15. coa can you post the vcore you used to get that 5000+ to 3.3? I've got a 5000+ currently running at 3GHz stock voltage and I've gotten it to 3.1 stock voltage as well but I want 3.3GHz because then I could use a /10 ram divisor and get my 667MHz ram.
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