Question Does having ram clocked at 2900mhz have a major performance impact

SgtWireless

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May 3, 2019
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I feel stupid to post somehting like this, but this ram kit i got a year ago will only run at 2900mhz on this mobo compared to the 3000hz i got on the smaller kit, i dont know if the 100mhz difference makes any difference to modern gaming.

The mobo its on is an asus TUF z390plus gaming with a intel I7 9700k and 3080ti.
 
Solution
if i try 3000mhz with these sticks i get crashes and instability,
If you're happy to venture into the BIOS, dive into the Memory Timings and switch from 'Auto' to 'Manual'.

Locate the CL (CAS) Timing and "relax" the setting by one clock cycle.

If the current (Auto) setting at 3,000MT/s for CL(CAS) is 18, change the value to 19 on each memory module.

Save the amended settings and reboot.

Run a stress test or your game to check stability.

If the machine still crashes, return to the BIOS and increment the CL(CAS) value again, e.g. from 19 up to 20.

This slows down the RAM slightly, but allows faster XMP clock speeds. What you lose on the swings, you gain on the roundabouts.

I got some 3,000MT/s RAM to run on an AMD...

Lutfij

Titan
Moderator
All DDR4 platforms for Intel had their sweet spots with tight latency DDR4-3200MHz dual channel ram kits. You could look towards DDR4-3600MHz ram kits but if they cost you a lot more than DDR4-3200MHz then you'd be at the point diminishing returns, where you're spending more in order to get just a little out of the platform.

this ram kit i got a year ago
For the sake of relevance, what ram kit are we talking about here?

asus TUF z390plus gaming
BIOS version for your motherboard?
 

SgtWireless

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May 3, 2019
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new ram kit is a 32gb corsair vengence that can clock to 3600mhz but my mobo wont let me do that, old kit was also a corsair dominator 16gb kit clocked at 3000mhz only, my mobo bios is as up to date as i can get it, old parts have their limits

if i try 3000mhz with these sticks i get crashes and instability, something not present on the previous 16gb, perhaps i made a a mistake with what kit i got
 

SgtWireless

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May 3, 2019
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also id like to add that the only game that seemed to suffer after installing the new kit is battlefield 2042, dropping that 100mhz seems to have broken the entire game so thats why i was asking if i was missing something else here too
 

Misgar

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Mar 2, 2023
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if i try 3000mhz with these sticks i get crashes and instability,
If you're happy to venture into the BIOS, dive into the Memory Timings and switch from 'Auto' to 'Manual'.

Locate the CL (CAS) Timing and "relax" the setting by one clock cycle.

If the current (Auto) setting at 3,000MT/s for CL(CAS) is 18, change the value to 19 on each memory module.

Save the amended settings and reboot.

Run a stress test or your game to check stability.

If the machine still crashes, return to the BIOS and increment the CL(CAS) value again, e.g. from 19 up to 20.

This slows down the RAM slightly, but allows faster XMP clock speeds. What you lose on the swings, you gain on the roundabouts.

I got some 3,000MT/s RAM to run on an AMD 2600X system by this method.

dropping that 100mhz seems to have broken the entire game
Your system must be "on the edge" if such a minor speed change makes such a big difference. Time for a new machine?
 
Solution

SgtWireless

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May 3, 2019
57
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2042 has always been hit or miss compared to newer more intensive games, i will attempt to look into the bios and tune this kit wiht your suggestion

update: well its posted easily with the number swapped to 19 and the ram at 3000, but its early days yet will keep updating
 
Last edited:

SgtWireless

Honorable
May 3, 2019
57
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Well its been stable for the last 5 hours which is a good sign, im wondering if i can get anymore power out of this ram, it can be clocked to 3600mhz but ive never dared try that since beforehand my pc wouldnt even post wiht it set higher than 3200mhz. these other timings might let me, but im not sure if i should increase them yet. Otherwise ill mark it solved if the stability remains for the rest of the day.