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Best source for used "e" CPU's? - Page 3

post #21 of 22
Quote:
Originally Posted by btupsx View Post

Thanks for the info guys. I had read that it is a business class chip, C3 silicon, but isn't an unlocked 555 BE also referred to as a B55? Same chip, unlockable? Have read it is 80 TDP as well, so I may be swayed if I can get it cheap enough and just undervolt.

Unlocked is definitely the way to go if you can. You can play with settings to your hearts content then.


I went 905e for an HTPC and I really wish I hadn't. I paid the same money I would have paid for an Athlon x4 with a much higer clock speed (the cache doesn't do that much), and at idle they both draw under 50 watts. If I'd have turned off a core on the x4 I probably could have reached 3.5-3.6 ish ghz on stock volts, lower than stock with only two cores active.

Theoretically if you're going for dual core Phenoms, the quad core Phenom should be more energy efficient. Lots of dual core phenoms had 80W TDP, and their quad core counterparts had 95W TDP. Dropping that back to a dual core should net you a more power efficient chip. It makes sense to me that way any ways as the dual core parts were all simply quads that didn't get binned as high. Finding a 95W TDP Phenom II is a bit of a challenge though, as they don't seem to have been super popular.

EDIT:
For got to add, for HTPC duty, most of what I've seen shows go for better single threaded performance. Man I wish I'd bought that Athlon II x4.
post #22 of 22
Thread Starter 
Quote:
Originally Posted by LuckySe7ens View Post

Yes, CPUZ calls a 555BE that unlocks and runs 4 cores a B55 i believe; I certainly understand the confusion there. However the only chips that AMD released under that naming scheme that I am aware of is the business class OEM chips.

Right, this was the source of my confusion, compounded with the scarcity of info on the actual B55. Even though the B55 is less energy efficient in theory than a true X4 Phenom @ 95 TDP, I'm tempted to go with it anyway given the low cost, and possibility I could unlock a core or two...
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Up in the Air
(14 items)
 
  
CPUMotherboardGraphicsRAM
FX-8350 Asus M5a99fx Pro r2.0 PowerColor 7850 2GBD5-2DHE/OC + Arctic Accelero S1 Kingston HyperX 8GB 1866MHz 
Hard DriveHard DriveOptical DriveCooling
WD Blue 1 TB 7200 RPM WD Blue 1 TB 7200 RPM Asus 24x DVD-RW Zalman CNPS14X 
OSOSMonitorPower
Ubuntu 14.04 x64 Windows 8.1 x64 HP w2207 Seasonic SS-660XP2 ATX 
CaseOther
Corsair 540 Air Crucial MX100 256GB 
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