To be honest, common sense tells us we can ignore the claim of a dual A9 having half the performance of an X5450. It simply isn't possible given the size, power and architecture differences. For this to be true it would need more performance per clock/core than a Sandybridge at about 1/100th the power draw. Cleary a ludicrous expectation.
A8 obviously is slower than A9. But we are comparing core for core, clock for clock performance, not overall performance with the A9 using more cores at a higher clock speed.
That said, even if we take A15 to be twice as fast as A8 core for core and clock for clock, a quad version of it is still going to be 1/3 to 1/2 the performance of an X5450. Or an Octo core version, assuming perfect core scaling is going to be at 2/3rds to equal in performance to an X5450. But thats with all factors leaning in the A15's favour.
The 2.8x claim though is totally unrealistic.
Correct me if im wrong, we almost agree here?
As i said here* and sorry im not clear enough,if A15 cortex 8 core reach 50% QX9770** in console universe (not general porpose aplications here) its an excelent result with =~1/15 TDP.
*
" Maybe you're right and now we're almost in the realm of speculation, these links* indicate that the A15 is higher than the A8, but still below core per core than the X86 can offer(if customised for console aplications reach 50% Core 2 Extreme QX9770 its an excelent result), but who knows with customizations and without limitation watts of portable and I said earlier, an A15 can provide considerable performance and very low consumption."
** http://www.cpubenchmark.net/cpu.php?cpu=Intel+Core2+Extreme+X9770+@+3.20GHz
Xeon 5450(90% power QX9770 in this numbers)
http://www.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E5450+@+3.00GHz
You're absolutely right, forget all the benchmarks (coremark, DMIPS etc.) and estimates of performances A9 and A15 vs. Xeon x5450 etc,probably because they are only marketing numbers, but perhaps with more equipment coming to market (and respective reviews and benchs) with A9 (already impressive on the first generation games PSVITA) and A15 (the Nova A9600 ,OMAP5 and others) reachs mainstrean we're surprised favorably with their performances.
Last edited by a moderator: