32gb 4400 or 16gb 4800

Sontungmtp

n00b
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Jun 19, 2020
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I have 2x16 gb ddr4 4000cl19 and currently run them at 4400cl17. If I change to 2x8gb 4800 or 5000, do I get more fps? Im gaming at 1440p and I dont see any fps increament when oc my ram to 4400 from 4000.
 

E4g1e

Supreme [H]ardness
Joined
May 21, 2002
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7,226
I have 2x16 gb ddr4 4000cl19 and currently run them at 4400cl17. If I change to 2x8gb 4800 or 5000, do I get more fps? Im gaming at 1440p and I dont see any fps increament when oc my ram to 4400 from 4000.
No. In fact, performance may actually decrease due to the way modern memory controllers work. You see, unless you happen to come across very old, very slow 8 GB sticks of DDR4 RAM rated no higher than 2400, virtually all 8 GB sticks are only single-ranked. And benchmarks have proven that only one rank of memory per channel actually performs almost as sluggishly as running a PC with only one stick of RAM (and thus forcing single-channel mode). That is because of a memory controller phenomenon called interleaving. You'd actually need those two 8 GB sticks to be dual-ranked (and practically nobody manufactures 4Gb ICs for dual-ranked 8 GB DIMMs any more).
 
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dasa

Limp Gawd
Joined
Feb 19, 2012
Messages
447
4400c17 is a excellent speed and higher frequency would likely need timings loosened to the point where latency doesn't change so you only end up with a little more bandwidth which is usually less important.
You could get some more performance with further tweaking if you haven't dialed in the sub timings yet.

If going from 4000c19 to 4400c17 made no difference then you are likely GPU bottlnecked not CPU as increased RAM speed only helps CPU performance.
 

Ready4Dis

2[H]4U
Joined
Nov 4, 2015
Messages
2,367
Yeah, once you start getting to the 4000 area in memory you really don't end up gaining a lot, especially if you have to loosen timings. If it were me, I'd go for 32gb over 16gb with as small a performance difference there would be. You'd be hard pressed to see any difference from the speeds, but if you ever hit a work load that needs the entire 16gb or more... you'll surely notice ;).
 

ThreeDee

[H]F Junkie
Joined
Sep 5, 2001
Messages
10,944
if you are actually going to use your PC ... 32gb ...hands down .. even if the 32gb was 3600mhz stuff .. if you just want epeen benchmark scores ..then ..... still 32gb :rolleyes:
 
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