I'm still trying to get my 7850 2GB do above 1280MB , but getting the out of memory error.
Even with
set GPU_MAX_ALLOC_PERCENT=100 / GPU_MAX_ALLOC_PERCENT=95
set GPU_MAX_HEAP_SIZE=100
set GPU_USE_SYNC_OBJECTS=1
DAG size (MB) Bandwidth (GB/s) Hashrate (MH/s)
128 130.915 17.1593
256 130.547 17.111
384 129.763 17.0083
512 129.429 16.9645
640 129.359 16.9553
768 129.501 16.9739
896 130.307 17.0796
1,024 130.303 17.0791
1,152 113.466 14.8722
1,280 103.826 13.6086
But it does seem to drop hard. from 1,024->1,280
Chunked (512) version below:
128 130.953 17.1643
256 130.552 17.1117
384 130.483 17.1027
512 129.715 17.002
640 160.314 21.0126
768 166.186 21.7823
896 162.538 21.3042
1,024 166.417 21.8126
1,152 135.096 17.7073
1,280 38.5741 5.05599
1,408 23.306 3.05476
1,536 17.4977 2.29346
1,664 12.6435 1.65721
1,792 12.2781 1.60932
1,920 10.8921 1.42764
Chunked (256) version below:
DAG size (MB) Bandwidth (GB/s) Hashrate (MH/s)
128 131.008 17.1715
256 130.584 17.1158
384 124.342 16.2977
512 114.388 14.9931
640 178.814 23.4376
768 160.401 21.0241
896 166.627 21.8401
1,024 156.984 20.5762
1,152 141.14 18.4996
1,280 123.989 16.2515
1,408 122.695 16.0819
1,536 51.0244 6.68787
1,664 29.0346 3.80563
1,792 21.4296 2.80881
1,920 17.2236 2.25754