joeorc said:
1. Off that was peak performance for the PS3 And 2nd and the snide comment you pointed out is not only incorrect, its it off the performance index is the A80 is true 8 cores they are not glued together for as an attempt to increase performance it in fact does increase performance, the CPU along with the GPU are all inside stacked in the Soc. No south bridge, no off chip north, no daughter board. For instance
Ascl example of A80 boards usage of their powerVR GPU's in the SOC. * PowerVR G6230: two Series6 USCs – 64 FP32 ALU cores with up to 128 FLOPs per cycle – 64 FP16 ALU cores with up to 192 FLOPs per cycle. That means up to 115.2 FP16 GFLOPS and up to 76.8 FP32 GFLOPS at 600MHz So no, the PS3 CPU alone does not outperform the entire A80 boards. Yes the PS3 GPU added in , yes, but this is about performance in how it can operate a year from now on mobile chips and their advancement is increasing fast enough that yes it will in short order even surpass the PS4 and Xbox one on a watt/performance scale yes, no doubt it would. It's not about "raw" performance. In AMD its always been about watt/performance on lower power ,Its based on Watt/performance under certain wattage for mobile's. Which the consoles & PC cannot compete with. Try a console power under 15 Watt's , how much performance could or would you expect? On that much power. And in that case ARM is indeed correct. |
Where at all did I claim that the PS3 cell CPU outperformed the A80 chip I stated that it almost did. The cell CPU is basically a decade old and the fact that it can perform at 38% of the A80 shows how weak mobile chipsets will always be compared to full fledged CPU/GPUs. CPUs are nothing compared to GPUs in terms of power so if a 10 years old CPU of the PS3 can almost match the A80 when you through in the PS3 GPU it really becomes a no contest.
And the Allwinner A80 does not have the performance you claim. Real world tests peg the performance at 68 gigaflops. The ARM architecture was designed to be very power efficient and operate on batteries. They need long battery life to survive. So any task that lasts longer than a few milliseconds will be aggresively throttled. The peak performance of 68 gigaflops can only be sustained for a short period of time also before the chips will smart to overheat and the clock speeds will be reduced to save on power consumption and heat.
And you claimed that the Allwinner A80 was more powerful than the PS3/Xbox 360. What happened to that, were you mistaken? Talk about moving the goalposts, now its about "performance per watt". You just need to admit that that was incorrect/made up. Consoles are not 15 watts and never will be, they dont need to worry about power as they are plugged in. That is why they can use powerfull CPUs/GPUs. ARM as architecture was not designed to do that and actually degrades in performance as you increase clock speed.
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