Originariamente inviato da
boype
Hi,
I have optimized the device's LPDDR RAM timings. I was able to increase the throughput by ~10 %, in my opinion a fairly good improvement for the fact that no overclocking is happening. Here are benchmarks (performed with RgBandwidth RAM misc benchmark; threads: 1. 20 benchmark instances each, best result wins):
codice:
Stock Tweaked
Copy 1249.9 MB/s -> 1373.0 MB/s --> 9.86 % improvement
Scale 1084.8 MB/s -> 1188.1 MB/s --> 9.52 % improvement
Add 938.4 MB/s -> 1050.2 MB/s --> 11.91 % improvement
Triad 923.0 MB/s -> 1043.5 MB/s --> 13.06 % improvement
Why I want you to test this has the following reasons:
1) Lower RAM timings can cause system instability. As chips are all different, it may be working just fine for most users, but might as well not work for others. I want to find reasonable values that increase performance on the one hand, but are also stable on the other hand.
2) I'm not sure if this is actually true, but there might be a slight chance that more aggressive RAM timing eat some battery. I personally think this should not be the case, but we will see.
So what have I changed? People who have tweaked their computer's RAM timings might find some of the variables familiar. I changed the RAM timings from
codice:
tCL = 6
tRPab = 21
tRCD = 18
tWR = 15
tRAS = 42
to
codice:
tCL = 5
tRPab = 14
tRCD = 14
tWR = 10
tRAS = 30
The test version is here:
http://boypetersen.de/fancykernel/ts...-tst01-ext.zip
For more information on RAM timings, read this
Wikipedia article.
Best regards