[quote]Quote from gladoscc on December 12, 2011, 09:53
[quote]Quote from ChrisR on December 11, 2011, 20:47
[quote]Quote from jamesh on December 11, 2011, 10:32
The Nokia phone uses a Nokia Arm (?) core + a separate Videocore GPU (2763). The Pi has a single Arm core built in the the same die as the Videocore GPU (2835). However, the Pi Arm core is slower than the Nokia one. (700 vs 1000?? Don\'t know the Nokia core speed)
The Nokia hardware has a customized ARM11 at 1GHz, which is pretty much the same in terms of supported features as the core in the Pi, so is about 30% faster based on clock speed only but there may be a difference in memory performance which would probably impact a GL benchmark. Also, the Nokia system has 128MB of dedicated RAM attached to the GPU which is likely to be faster than the shared memory system used in the Pi. In total, the available headroom for graphics performance should be higher on the Nokia 701/700/603 family.
With that in mind, it\'s (IMO) very unlikely that the Pi will beat the 701 benchmarks, but there are significant architectural differences in both hardware and software which makes predicting Pi performance based on 701 performance rather troublesome.
If that is true, then the graphical power of the pi is really disappointing. [/quote]
Whuh? What do you mean? How can you make that assessment from the comment you quote?
In fact, the GPU in the 701 accesses memory in the same way as the BRCM2835, it\'s just that in the 2835, it has to share the bus with the Arm, so it that is doing a lot (and I mean a lot) of memory accessing for some reason then there may be an impact on the GPU memory access speed, but to be honest it won\'t be that great - you need to be really REALLY hammering it to have an noticable effect.
Haven\'t done the tests yet, but I think the Raspi benchmarks will be pretty much the same or better that the 701.
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