Author: Aaron Gordon
Date: 09:40:16 02/10/04
Go up one level in this thread
On February 10, 2004 at 11:45:08, Robert Hyatt wrote: >On February 10, 2004 at 00:16:32, Slater Wold wrote: > >>On February 09, 2004 at 23:27:11, Robert Hyatt wrote: >> >>>On February 09, 2004 at 23:02:58, Slater Wold wrote: >>> >>>>On February 09, 2004 at 22:52:12, robert flesher wrote: >>>> >>>>>Hi just wondering the differnce between the Athlon,Fx51 versus the Opteron148 or >>>>>248. I know that 248 supports 1-2 processors where the 148 is a single >>>>>processor. The price on the 148 matches the FX51, so could anyone explained the >>>>>difference. I have been an Intel user all these years but i have heard great >>>>>things about AMD lately.. Cheers~ >>>> >>>>The 248 is more expensive than the FX51 (by over $100). I cannot even find a >>>>148. >>>> >>>>You'll have to go Opteron if you want to go dual. >>>> >>>>The FX51 has better memory features, and will run games, and other memory >>>>intensive applications better. But for computer chess, the 248 and the FX51 >>>>will do the exact same numbers. >>> >>> >>>I don't claim to be an AMD expert, but I am not sure that is true. The opteron >>>has a bus that is 2x as wide as the fx51, or so I have heard. That makes a >>>difference in bandwidth. >> >>I read for over an hour on AMD's website, and I can find no differences, except >>the Opteron is 1.2v and the FX51 ia 1.5v. > >The only info I recall is that the fx51 supposedly uses a 128 bit bus, while the >opteron uses 256 bits. That is potentially 2x. I would not bet a lot of money >on that point however, as I have not studied the fx51 at all, while I have >looked at the Opteron in some detail since I was using it recently... From what I've read so far I think the Athlon FX and Opteron are pretty much identical. Bandwidth included.. both have dual channel DDR controllers on the chip itself. It is the Athlon 64 which only has a single channel DDR controller on-chip. From the single cpu memory bandwidth tests I've seen the Athlon FX and Opteron are always close.. Athlon FX usually leading by a few percent (better chipset I'd imagine). The Athlon 64's bandwidth usually comes in at about half of the FX/Opterons memory bandwidth test results. I could be wrong.. but.. this is what I've seen as of yet.
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