[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] which server to buy?
On Tue, Jan 27, 2009 at 12:15 AM, Mike Williams <mike@xxxxxxxxxxx> wrote: > On Monday 26 January 2009 14:45:55 Alexey Zagarin wrote: >> I'm now only concerned about virtualization >> capabilities of AMD vs Intel, if they are roughly equal I'll go with AMD used to be better in virtualization since it supports x86 real-mode better than Intel so for example, it allows you to display SUSE's pretty bootloader on HVM. However Xen 3.3 adds Full x86 real-mode emulation for HVM guests on Intel VT so Intel CPUs can be used to run those OSes as well. Note that x86 real-mode is usually only used during installation/early booting phase anyway, so today I'd say they're roughly equal. >> Xeon 5405 because it's cheaper & have more cache than Opteron. > Which Opteron? I think Opteron 2352 is faster and uses a little less power while having the same price (on HP anyway) as Xeon 5405. > I'd take Opterons for server duties over Xeons without blinking, especially > virtualization. > I have a slightly different opinion. Recently (on another thread on this list) I compared the performance of GPLPV network driver on Windows HVM domU (which is CPU bound, and its performance mostly depends on the speed of a single core) tested with iperf on Intel and AMD CPUs. Here's the result (bigger=better) - Xeon X5450 @3GHz -> iperf = 1.4 Gbps - Opteron 2220 SE @2.8 GHz -> iperf = 1 Gbps They're not exactly apple-to-apple (being from different year and different core-per-socket), but my point is today's Xeon can match Opteron's performance on the similar price range. There are other considerations though, like the fact that HP's opteron-based DL185G5 can have more memory and disk compared to xeon-based DL-180G5. For most requirements (e.g. general one or two quad core CPU, 4-16GB) I'll take whichever is available for lower price and similar performance (which tend to change on monthly basis) on my budget range, whether Intel or AMD. Regards, Fajar _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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