Originally posted by: black_zion I see two Opteron 285 models, a 95w (OSA) and an 85w (OST) version. I'm not sure you will see any difference due to the way AMD rates their chip's TDP, which is the maximum it could ever achieve. My advice would be to upgrade your cooling, or upgrade your system to a single modern Opteron setup. Or live with the higher temps, for a 90nm CPU 40s isn't high.
Yes, but the temperature is still high up enough at load (55C, almost 60C) under stress that it's just a nuisiance. actual hardware upgrades are out of the question, I spent too much time building this already. As far as a cooling upgrade, I'm still researching alternatives. the CNP5X heatsinks I'm currently using are exactly what I need in terms of the direction of airflow and the mounting capability. I'm having a problem finding a heatsink now that has two latches that can sit atop the standard AMD bracket, or use the two screw holes meant to mount such bracket to the backplate.
To give you an idea of my heatsink size constraints in this case, here's an image: [http://goput.it/msm.jpg]
(and as a note for the record, I'm working on acquiring heatsinks for the MOSFETs for both CPUs. all of the S939 boards I've come into contact have sinks on them, so I don't know why an S940 board should be any different... probably since it was half-made to go into a high-airflow server/workstation-class case.)
If a heatsink can be found on the cheap that isn't similar at all to the stock OEM heatsink, and can handle a 95W+ load, I'd switch to them in a heartbeat.
Originally posted by: Mime OST is the prefix for Opterons sold as OEM for HP. It's got the same Revision code and the same CPUID as the OSA285, so I'm thinkin the reason why it got a different rating for TDP is probably less technical and more political.... Meaning, HP told AMD they wanted a TDP of 68W and AMD "found" a way to make it happen.
I was figuring it would be something along those lines, it just seemed too good to be true. So, bottom line on that is, based on that educated guess, there is no difference at all between the OSA and OST Opteron 285 regardless of the TDP rating given to it... would it be correct to infer at least that much?