First Round of AMD Athlon 64 Reviews In 248
wrinkledshirt writes "Here's a bunch of AMD Athlon 64 reviews, courtesy of 8Dimensional." AcesHardware and HardOCP match the Athlon 64 line against the Pentium 4 Extreme Edition. amdmb, FiringSquad, and SharkyExtreme take a closer look at the FX-51. AthlonXP and PCStats have glowing reviews of the chips. Digit-Life compares the new Athlon 64 with Opteron and a Pentium 4. LegitReviews and Overclockers.com.au also both have succinct reviews of the FX-51. Overall the reviews speak very highly of the Athlon 64 and the FX version of the chip, with the only downside being the cost, especially of the FX chip.
Re:Pentium 4 Emergency Edition (Score:4, Interesting)
Re:Memory mapped disk? (Score:5, Interesting)
The point about mmap(2) is to let the system (the VM subsystem of the kernel) manage the caching for the userland processes using it, avoiding extra copies to/from buffers in userland and eliminating in several cases the need for custom caching code (processes don't have to worry about data being available in RAM: the kernel automatically takes care of that when needed).
You don't need gobs of memory to do this, but in order to work on large amount of data you need a large address space, which is what 64 bit architectures provide. Of course, the more physical memory you have, the less the kernel has to swap pages in and out, but the main point is not that.
A little example to clarify: in order to keep things simple (instead of needing two intermixed caching systems, one for the VM and one for disk accesses), the Hurd just mmaps the whole partition. This means that the maximum size of a partition has an upper limit given by the size of the addressing space, which is 4GB on 32bit architectures (actually less, since in that address space you have to keep also the code that uses the mmapped data, so it's more like 2GB/3GB). A 64bit architecture comes very handy here, given the current size of hard disks.
Re:Hang on.. (Score:2, Interesting)
Re:Pentium 4 Emergency Edition (Score:2, Interesting)
Athlon FX 2.8 Ghz today! (Score:2, Interesting)
I can't wait until theres 64 bit games for this sort of thing. Of course, the first to be released will be Unreal Tournament. Oh yahh!! I know I'll own at least one of the AMD64 computers within the next year!
I'd love to have a new AMD64 for my application server. There were benchmarks on extreme tech showing a 1.6 Ghz dual opteron beating a 2.8 Ghz quad xeon by gigantic margins (almost double). So when these Athlon 64 processors trickle down to the same clocked Opterons, it should start to shake up the server market even more. Especially given upcoming backing from Sun:
http://www.theinquirer.net/?article=11772
Ugh... (Score:2, Interesting)
Re:Hang on.. (Score:3, Interesting)