Required voltages are depend on the architecture, ALU pipelining, VLSI shematic, fab's tech process characteristics and etc, etc. I don't think it's clever to extrapolate A7 characteristics on other SoCs. For example http://images.anandtech.com/doci/7622/Screen%20Shot%202014-01-06%20at%206.19.21%20AM.png here A7 consumes more than 550 Mhz Adreno 330 with 2x of ALU horsepower - http://gfxbench.com/result.jsp?benc...e&arch-unknown=true&arch-x86=true&base=device
1. One thing that isn't clever for sure is to provoke and then jump to conclusions, especially since I didn't specify any other platform. There are ULP SoC GPUs with much higher frequencies than 450MHz shipping in devices.
2. Most if not all IHV's will continue to optimize for synthetics like that and scores will continue to improve.
3. You might "think" the 330 at 550MHz has more ALU power, but it's not nessecarily the case. If you really want to interpret the ALU test results as you do, you might want to think why the 330 hasn't 2.6x (141 vs. 55fps medium ALU scores) the arithmetic throughput of an Adreno 320. From the GFXbench description for the ALU test:
But since we're at it counting beans where what excels at most you might also want to check the "driver overhead offsreen" results. It basically measures the CPU driver overhead of the OGL driver with very frequent state changes.Measures the pure shader compute performance of your device by using a complex fragment shader and rendering a single full-screen quad.