4 ms·
That's my understanding, yes. All my knowledge is from random Reddit threads however. Since I was scared off 128 GB by all those complaints, I built a 7950X s
by skirmish 4y ago
That's my understanding, yes. All my knowledge is from random Reddit threads however.
Since I was scared off 128 GB by all those complaints, I built a 7950X system with 2*32GB memory, and it runs well/stable at its rated 6000 MT/s with EXPO on (also, AMD says 6000 MT/s is the sweet spot for AM5 memory interface, so I am happy).
Motherboard: ASRock X670E Steel Legend
RAM: G.Skill Trident Z5 Neo 64 GB (2 x 32 GB) DDR5-6000 CL30
Here is another thread I remember reading: https://old.reddit.com/r/hardware/comments/za0x0q/level1techs_is_128gb_of_ddr5_impossible_on_am5/ https://old.reddit.com/r/hardware/comments/za0x0q/level1tech...
- injinj 4y agoThat's what I got (7950x steel legend), except that I'm running 128GB memory at 4800. Here's my stream results (with the cpu in 105watt "eco" mode): $ wget https://www.cs.virginia.edu/stream/FTP/Code/stream.c $ gcc -O3 -fopenmp stream.c $ a.out Number of Threads counted = 32 Copy: 45571.7 Scale: 40672.0 Add: 45317.3 Triad: 42759.0 With array size 8,000,000 Copy: 31551.3 Scale: 30983.7 Add: 34403.6 Triad: 34484.1
- skirmish 4y agoInteresting, didn't think memory speed will make so much difference but it did. 7950x X670E Steel Legend, standard mode, 2*32 GB = 64 GB RAM at 6000, CL 30. Array size = 1,000,0000 Copy: 61488.8 Scale: 55905.4 Add: 61320.2 Triad: 57706.5 Array size = 8,000,0000 Copy: 43631.0 Scale: 43062.7 Add: 46782.6 Triad: 46966.8
- injinj 4y agoWow, that's significant. I may have to look into that.