09-24-2017 08:25 AM - last edited on 03-06-2024 08:43 PM by ROGBot
09-24-2017 08:51 AM
Addiecool wrote:
While testing a few things, I set the cache to 3 Ghz down from 3.2Ghz @1.155v. Though the system worked perfectly still and made no noticeable difference, the CPUZ score fell by 1200 points to 5700-5800. I did not know at this time that this was due to the what reason.
Baffled much, I tried everything I knew to fix this (thanks to my OCD 🙂 )
And suddenly I realized setting the cache to 3200Mhz upped the scores back to 7100 and a little better on other benchmarks.
So my question is, can cache speed make such a big difference in speeds? Is this possible? or a bug? I am sorta baffled still.
09-25-2017 02:28 AM
Moloch wrote:
That seems like a huge difference from 3000 to 3200, but I'm no expert on cache.
My personal experience was having ~85GB/s RAM bandwidth with default 2400 cache speed. When I bumped it to 3200, I got 105GB/s... 25% increase in RAM bandwidth from a 33% increase in cache speed
So yeah, I'd guess that is somewhat normal, though I wouldn't expect to see a 20% change in benchmark with only a 5% change in cache speed. That seems like too much... that's similar to what I got moving from 2400 to 3200 (though I did not test to see where the gains were made, it could have been 90% in the 3000-3200 range)
10-12-2017 07:25 PM
Addiecool wrote:
yup. Major increase seems in the higher cache speeds. Also improves gaming performance in some games.*
09-25-2017 02:29 AM
Raja@ASUS wrote:
Real world gains are often very small. However, it's worth taking what's on the table, without needing to increase voltages excessively.
09-25-2017 04:14 AM
09-25-2017 08:21 AM
jab383 wrote:
Raja hit the key. Yes, cache speed in relation to memory speed can improve or reduce benchmark scores. The point of diminishing returns is where the cache can handle all the memory data traffic - after that higher cache clock makes very little difference. Where it hurts with the current crop of Skylake-X is that higher cache clocks and the required voltage burn a lot of power and heat. As you raise cache clock, watch CPU package temperature.
10-13-2017 02:25 PM
Addiecool wrote:
Hi
4.7Ghz @ offset of 0.012v
3.2Ghz Cache @ 1.16v
DRAM at 3600Mhz @1.35v (16-16-16-32)
Rest everything I set to Auto
10-30-2017 05:44 PM