On Nov 19, 2012, at 8:37 PM, Robert G. Brown wrote: > On Mon, 19 Nov 2012, Douglas Eadline wrote: > >> >>> On Mon, 19 Nov 2012, Douglas Eadline wrote: >>> >>>> Intel has a single socket Xeon (E3-12XX series Sandy/Ivy-Bridge) >>>> and will work on single socket motherboards. Mostly designed for >>>> the small office/home server these have more "server" features, >>>> basically ECC, and cost slightly more than the i-5/7 series. They >>>> are lower power as well. >>> >>> But are they faster? >> >> >> That, I don't know. My guess is they are about the same as >> the i7, but provide ECC. You know the die is pretty much the >> same on all parts within a family. They blow a few fuses to turn >> off capabilities and "bin" the parts based on >> thermal performance/clock speed. > > Yeah, I just wasn't sure how much they were "within a family". You > know > my motto -- a benchmark talks, bullshitting about possibilities > walks;-) > Otherwise it is too easy to theorize your way into an expensive mess > with your budget blown and no way to fix it. > > Anybody have an apples to apples comparison on some sort of real > code or > benchmark code i7 to one of the Xeon family CPUs?
If you're interested i have some results of diep at i7 Xeons and latency numbers. 2 socket Xeons that is. Not 1 socket. > > In the meantime, let me commend the i7-3770 with this: > > processor : 7 > vendor_id : GenuineIntel > cpu family : 6 > model : 58 > model name : Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz > stepping : 9 > cpu MHz : 1600.000 > cache size : 8192 KB > physical id : 0 > siblings : 8 > core id : 3 > cpu cores : 4 > apicid : 7 > initial apicid : 7 > fpu : yes > fpu_exception : yes > cpuid level : 13 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat > pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx > rdtscp > lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc > aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 > cx16 xtpr pdcm sse4_1 sse4_2 x2apic popcnt aes xsave avx f16c rdrand > lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority > ept vpid fsgsbase smep erms > bogomips : 6784.31 > clflush size : 64 > cache_alignment : 64 > address sizes : 36 bits physical, 48 bits virtual > power management: > > on a pretty boring ASUS motherboard, not even a sabertooth. I > wouldn't > hesitate to put together an i7 system for floating point stuff, > although > with really large memory I admit ecc is moderately appealing (a > perennial discussion:-). I would avoid overclocking it - You did disable turboboost? Which *is* a form of overclocking. > - the ASUS > boards all support aggressive overclocking -- to ensure that it > runs in > a nice, stable mode. I also have a small mountain of fans to keep the > chassis cool. It's a 6 TB RAID as well as compute platform, and > all of > the fans have nifty blue leds and the case itself is partly > transparent. > It's gorgeous, in other words... > > rgb > _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
