Post
Topic
Board Mining (Altcoins)
Re: [CPU] JCE Miner Cryptonight/forks, brand new, super fast!
by
Lonnegan64
on 14/04/2018, 21:25:29 UTC
Four threads ? So it's better to use 4 normal threads than 3 + dualmine ? [heart broken]
If that's what you say, so it's another proof the dual mine is useless outside the very rare case of a 2M-cache dual core cpu. Cry
Yes, indeed, he is right:

3T => 58 H/s
3T + helper => 64 H/s
4T => 70 H/s

And that despite Deneb has only 6 MB L3 cache.  Shocked But I forgot the special cache architecture of AMD systems. Intel systems have inclusive caches. So the size of the L3 cache is the maximum cacheable size, because the data in L2 and L1 are just subsets of a copy. AMD systems instead have exclusive caches, where no data is ever stored in L2 and L3 at the same time. That's why you can add L2 and L3 cache size. Deneb has 4x 512 KB L2. Together with the 6 MB L3 you get 8 MB cache altogether; or room for 4 threads.  Roll Eyes

But it still can be helpful for non-AES Intel CPUs with limited L3 (Lynnfield) or for Phenom II X6 to use the last two cores, as well Cheesy