View Single Post
Old 2021-07-26, 06:07   #12
tuckerkao
 
"Tucker Kao"
Jan 2020
Head Base M168202123

48510 Posts
Default

Quote:
Originally Posted by kriesel View Post
RTX 3080 Ti is fast at ~4800 GHD/d in TF, but at ~93. GHD/day for PRP, LL or P-1, is comparable to a GTX 1080 Ti or RX 5500 XT or ~30% of an RX 6900XT or Radeon VII per https://www.mersenne.ca/cudalucas.php
I have multiple Radeon VIIs on a system served by a Celeron G1840, so yes it does not take much CPU to keep GPU apps going. Except when doing GCDs in P-1. I recommend about as many physical CPU cores as GPUs & HT so the GPUs are unlikely to wait for each other. Also >16GB of system ram if doing a lot of GPU P-1 on multiple 16GB-vram GPUs simultaneously.
Looks like I should get AMD Threadripper 5970X and AMD Radeon RX 6900XT, it's actually a bit cheaper of this combination. if I can finish most of the PRPs of M168,***,*23 within 2 years, then it'll be ideal.

Quote:
Originally Posted by kriesel View Post
I have multiple Radeon VIIs on a system served by a Celeron G1840, so yes it does not take much CPU to keep GPU apps going. Except when doing GCDs in P-1.
I'll focus on P-1 factoring for all the M168,***,*23 exponents that have been trial factored up to 2^77 with my current old machine now, so when I get my new PC, it'll be mostly PRPs and TFs of 2^77 to 2^78 remain.

Last fiddled with by tuckerkao on 2021-07-26 at 06:59
tuckerkao is offline   Reply With Quote