E3 1230v2 is enough for me. You don't have to spend a lot of money for CPU.
On Sun, Apr 14, 2013 at 12:24 AM, Pandu Poluan pa...@poluan.info wrote:
On Apr 13, 2013 8:29 PM, Tamer Higazi th9...@googlemail.com wrote:
Hi Dale!
Am 13.04.2013 13:54, schrieb Dale:
Pandu Poluan wrote:
I myself prefer AMD CPUs to Intel ones.
Intel has this habit of 'segmenting' their processor features. E.g.,
Intel VT-x (Intel's buggy implementation of AMD-V) is not available
across the board.
What is VT-x
you really should learn to use Google...
In short: VT-x is Intel's version of AMD-V.
What is AMD-V? It's a feature of AMD CPUs that *greatly* assist
virtualization.
It's not just VT-x, there are a *lot* of features that Intel may or may
not provide on a certain model.
And also all the time, Intel promotes for their Hiperthreading
support, as well Intel swears on their QuickPath system they have
developed and should release the FSB which is stil being used at AMD,
Incorrect. AMD uses HyperTransport for a lng time. QuickPath is just
Intel's version of HyperTransport.
As to Hyperthreading... it was technology from Pentium 4 actually,
originally called NetBurst, it splits a core into two virtual cores,
leveraging Intel's long pipeline. There are benefits, but also drawbacks.
even when they mention that MT (Megatransfer instead GHZ) for
describing their frontside bus speed
so, it is in this case not only the CPU's speed, also the Speed the data
reaches the memory, and other components like the GPU of your graphics
device, no?!
Yes, and honestly, AMD was there first. IIRC, Intel still have some
problems with cache coherency on multiple processor systems. AMD has no
such problems; the HyperTransport technology used by AMD is perfectly
capable of servicing NUMA Architecture.
And what about Hyperthreading?! At the Gentoo make configuration guide,
the intel corei7 are fully supported.
The 'support' comes from gcc, and gcc fully supports AMD CPUs also.
There is being described, that if Intel corei 5 or 7 CPU's are used, I
could double the amount of cpu's for compiling
MAKEOPTS=-j8 (for a quadcore core i5 / 7) because of it's
hyperthreading support.
As I wrote above, Intel's Hyperthreading splits each core into two virtual
cores. Thus, if you know the number of physical cores *and* you've turned
on Hyperthreading in the BIOS, you can (and should) double the number of
jobs.
That information is *not* due to Gentoo better supporting Intel, it's
there because of Intel's complexity.
AMD CPUs from the get-go already support a higher core density than Intel;
they never need to split their cores into virtual cores.
If one needs to leverage VT-x for virtualization
purposes, one must be double sure that the CPU one bought supports
VT-x.
All latest AMD CPUs (except the laptop versions) support all AMD
features.
Where are the latest AMD CPU sets on Gentoo used at all ?! What about
the Intel's one?! And do they make a huge difference in this case?!
gcc -march=native will allow gcc to detect and leverage all features.
I don't know which features are used where, except for AMD-V, which is
heavily leveraged by virtualization (virtualbox or Xen, in my situation).
If you can give me a deep technical answer, I would be very happy
The money is not what counts. It's the system stability. My AMD cpu was
very lng time ago an AMD Athlon XP which makde me a lots of
headache.
You're sooo out of date.
Nowadays, AMD CPUs are at least as stable as Intel CPUs.
Rgds,
--
--
Regards,
Erick Guan/管啸 (fantasticfears)
