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Mixing 2x 3200mhz with 2x 3000mhz RAM?

I have 2x 16GB of 3200mhz of ram at the moment. Will getting another 2x 16GB 3000mhz instead of 3200 affect system performance or compatibility since it is slower? I can get the 3000mhz about $60-$70 dollars cheaper than the 3200mhz, so if it doesn't affect performance I thought I'll save some money there.

 

Does that also mean the 3200 will be running at 3000 instead?

 

I'm running an Intel 9900k build, and mostly do video and photo editing if that matters. No Gaming.

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3 minutes ago, aeronium said:

I have 2x 16GB of 3200mhz of ram at the moment. Will getting another 2x 16GB 3000mhz instead of 3200 affect system performance or compatibility since it is slower? I can get the 3000mhz about $60-$70 dollars cheaper than the 3200mhz, so if it doesn't affect performance I thought I'll save some money there.

 

I'm running an Intel 9900k build, and mostly do video and photo editing if that matters. No Gaming.

 

You would want to run all four DIMMs at the lower frequency + higher timings of the two.

 

For an example:

  • DDR4-3200, 16-18-18-40 timings, 1.35V
  • DDR4-3000, 14-14-14-36 timings, 1.35V

You would want to run them at DDR4-3000 16-18-18-40 timings, with 1.35V DRAM voltage.

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Just now, -rascal- said:

 

You would want to run all four DIMMs at the lower frequency + higher timings of the two.

 

For an example:

  • DDR4-3200, 16-18-18-40 timings, 1.35V
  • DDR4-3000, 14-14-14-36 timings, 1.35V

You would want to run them at DDR4-3000 16-18-18-40 timings, with 1.35V DRAM voltage.

I'm guessing I'll have to change that in the BIOS? Is this essentially overclocking the RAM to make it match the 3200?

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1 minute ago, aeronium said:

I'm guessing I'll have to change that in the BIOS? Is this essentially overclocking the RAM to make it match the 3200?

That is underclocking it.

Higher timings = slower.

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Will I run into compatibility or stability issues if I leave the 3200 RAM as it is?

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4 minutes ago, aeronium said:

I'm guessing I'll have to change that in the BIOS? Is this essentially overclocking the RAM to make it match the 3200?

No you are underclocking it to match. Slower performance. I would just look at getting 3200 again, itll save a headache.

 

EDIT: Did not see @Enderman's post above. Same thing.

 

Yes you will see issues if you don't underclock it.

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13 minutes ago, aeronium said:

Does that also mean the 3200 will be running at 3000 instead?

Maybe, maybe not even that is possible because of the load on the Memory BUS.

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6 minutes ago, aeronium said:

Will I run into compatibility or stability issues if I leave the 3200 RAM as it is?

The computer will probably change the frequency and timings automatically, so no you can't just leave it as is.

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If it's the same RAM (same manufacturer, looks etc) like one being DDR4 3000 CL16 and the other 3200 CL18 then there's no problem since it's the same RAM.

Kingston has some HyperX Fury modules like that. Many manufacturers do. the modules would adjust automatically. 

But if it's a totally different RAM, everything might work OK but also there might be many issues. That's why it's best getting the same RAM.

 

 

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