DDR4 memory speed performance increase?

[tictaktoe333]

I have seen a lot of people turn down good deals with 2400MHz DDR4 because they need *some higher speed* as they believe that 2400MHz gimps their system.. How much truth is there in this and has anyoen upgraded from 2400MHz and actually seen noticeable performance increases?

I would test but I still have DDR3 LGA1150

 

[tictaktoe333]

For Ryzen CPU's, that is certainly the case. 3200 MHz is much more desirable than 2400 Mhz!

For Intel I dont think there is so much of an issue. Ryzen only improves due to RAM Mhz being tied the infinity fabric, which is the data speed between ccx's.

Yeah to be fair most of the reporting on this has come around from AMD CPUs. That said, so ill-informed people with Intel builds are trying to steer clear of 2400MHz just in case. But I haven't seen anything to suggest that these fears are well founded.

 

[tictaktoe333]

Believe its the same with the latest intels, there is a benefit to faster ddr4 settings, its just not as pronounced as ryzen.

originally on release some Ryzens didn't even post with lower memory which was kinda shocking ngl. But its good that you mentioned about the Intel differences. I really am an Intel fan, I just trust them as the more "quality" choice - although I don't have any particular proof for that, as I only have one system with AMD in it and it seems to be fine haha

 

[tictaktoe333]

When skylake landed there was a lot of testing done and you can see much of that on YouTube.

Going from 2133 to 2666/3000 gave a 10 to 15 frp increase the tested was running benchmarks and simply change ram and retesting

Do you know if this is something that can be addressed over time through patches? or is it more on an architectural level?

My knowledge of ram timings stopped at DDR3 because my I7-4790k uses that and its more than enough for 1080p - anywhere from 1333-1866 I have seen no noticible improvement in performance.

Also I have now been reading things about coffee lake having slowdowns due to ram speed? if so, are all architectures moving forward just going to want faster ram? It seems crazy to think that what didn't matter in DDR3 world matters loads in DDR4!

 

[tictaktoe333]

Did Spectre and Metdown pass you by? So much for Intel quality.

Mate don't talk about stuff you don't understand, Spectre and Meltdown affected the architecture of literally every manufacturer to different degrees. Just because it hit Intel the worst it doesn't mean that their quality is rubbish, it means they were unlucky with a truly unforeseen vulnerability. No manufacturer can patch something before they know it exists.

Privilege checking works on a cycle, that is something that is pretty key to the way modern computing works. You could argue that the manufacturers should have patched it before it was disclosed but if you have been studying cyber security enough you would know that that never happens - read up about the slow loris-style attacks that Microsoft literally cannot be arsed to patch. Encryption in that area of low-level cache would have just led to performance decreases when there was no reason to encrypt it as there was nobody who had ever exploited it.