2013-04-17, 12:13
The "totalmem" is memory available to the arm processor, so you have a 512MB board with a gpu/arm split setting of 256/256. Look in config.txt for this setting: cat /flash/config.txt 
If you have a 512MB board lowering the GPUmem to 128MB will make the SYSTEM run entirely from ram. The advantage is a speed increase this disadvantage is you might run out of GPUmem if setting guires to more than 720p or 900p. This setting is only available in rbej's builds, official builds are fixed at 720p. (It does NOT mean that the resolution is 720p its still 1080p and videos will play at true 1080p to)
If you have a 512MB board lowering the GPUmem to 128MB will make the SYSTEM run entirely from ram. The advantage is a speed increase this disadvantage is you might run out of GPUmem if setting guires to more than 720p or 900p. This setting is only available in rbej's builds, official builds are fixed at 720p. (It does NOT mean that the resolution is 720p its still 1080p and videos will play at true 1080p to)
