Am 22.10.2010 um 19:17 schrieb Gennady Kupava: > В Птн, 22/10/2010 в 05:36 -0700, RANJAN пишет: >> Hello, >> >> Recommendations for better hardware on Openmoko. >> >> 1)A 600 Mhz processor is minimally required to run the OS at usable >> speeds.An 800 Mhz processor would be good across all OSes.A 1Ghz >> processor would be too costly > > Hi, Ranjan. > > I just want to say that memory subsystem speed is much more important > for speed than cpu speed. > > While testing freerunner, i've found that performance of system > primitives of 500/83 CPU is similar to 400/100. So, really it is much > more important to have fast memory subsystem. So, for example, 600/100 > will be really not so far from to freerunner's at 440/110. > > Memory subsystem speed become extremly important if CPU lack of L2 > cache. What is cache(s) size(s) of GTA04's CPU?
It comes with a OMAP3530 [1]: ARM CortexTM-A8 Memory Architecture: – 16K-Byte Instruction Cache (4-Way Set-Associative) – 16K-Byte Data Cache (4-Way Set-Associative) – 256K-Byte L2 Cache • 112K-Byte ROM • 64K-Byte Shared SRAM If you want to start to experiment with this CPU today (and not wait for the GTA04), I suggest to get a BeagleBoard + our Hybrid Board (Touch-Display + GPS). The perceived speed (not a scientific measurement) is factor 10 faster. Best regards, Nikolaus [1]: http://focus.ti.com/lit/ds/symlink/omap3530.pdf _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community