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Increase in RAM from 4GB to 12GB

Canada EH
By Canada EH
in CPUs, Motherboards, and Memory
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Posted

I mixed 2 brands of RAM, a single Samsung stick of 4GB has got, I added the picture of the CPU-Z screen shot of just that installed.

Then I added these - G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)

Quote
  • DDR3 1600 (PC3 12800)
  • Timing 9-9-9-24
  • Cas Latency 9
  • Voltage 1.5V

After I added the G.Skill the CPU-Z did not change.

Question #1 - Why is the 3 stick RAM mix reverting back to the slower latency ram?

Question #2 - What noticable effect will I have going from 4GB to 12GB?

Tons of webpages open, usually around 30. Youtube video.

The only notice I see is I think I noticed a huge improvement with World of Tanks online PC game. On low settings before RAM upgrade I was getting 50FPS, after upgrade 90FPS just with the iGPU.

However on Medium settings I was getting 15-20FPS.

Ram1.jpg

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2 minutes ago, Canada EH said:

Question #1 - Why is the 3 stick RAM mix reverting back to the slower latency ram?

All sticks have to run at the same speed and latency values. By default, your mobo should run both at the slower value of the 2.

 

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i really do not understand the first part of what you wrote. Can you maybe explain?

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With mixed RAM, the speeds of the other modules drop to match the slowest RAM in the system.

 

In addition, your setup will probably use Asynchronous dual channel mode, where RAM speeds operate at close to dual channel speeds until the RAM in one channel is filled. Interleave Mode (matching quantity) is slightly faster. 

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4 hours ago, dams3 said:

i really do not understand the first part of what you wrote. Can you maybe explain?

I have one stick that came with the computer, its Samsung 4GB.

I received my purchase of two G.Skill 2x4GB and installed them.

Now I am at 12GB of RAM with everything reverting to the slowest stick, Samsung.

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3 hours ago, Canada EH said:

I have one stick that came with the computer, its Samsung 4GB.

I received my purchase of two G.Skill 2x4GB and installed them.

Now I am at 12GB of RAM with everything reverting to the slowest stick, Samsung.

what do you mean reverting to your slowest stick. If you mean that they are running at the samsung stick's speed then thats normal. Ram always runs at the speed of the slowest stick you have.

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10 minutes ago, dams3 said:

what do you mean reverting to your slowest stick. If you mean that they are running at the samsung stick's speed then thats normal. Ram always runs at the speed of the slowest stick you have.

The motherboard, by default, will run the "lowest common denominator" that is present.

 

Say you had three completely different 4 GB RAM sticks

  1. DDR3 1333 MHz 10-10-10-34 1.5V
  2. DDR3 1866 MHz 11-11-11-40 1.5V
  3. DDR3 1600 MHz 9-9-9-24 1.5V

Your computer will run them all three sticks at 1333 MHz 11-11-11-40 1.5V.

This is to guarantee compatibility -- to make sure you can use all 12 GB.

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5 hours ago, -rascal- said:

The motherboard, by default, will run the "lowest common denominator" that is present.

 

Say you had three completely different 4 GB RAM sticks

  1. DDR3 1333 MHz 10-10-10-34 1.5V
  2. DDR3 1866 MHz 11-11-11-40 1.5V
  3. DDR3 1600 MHz 9-9-9-24 1.5V

Your computer will run them all three sticks at 1333 MHz 11-11-11-40 1.5V.

This is to guarantee compatibility -- to make sure you can use all 12 GB.

yes indeed

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11 hours ago, dams3 said:

what do you mean reverting to your slowest stick. If you mean that they are running at the samsung stick's speed then thats normal. Ram always runs at the speed of the slowest stick you have.

Yes thats been told, seems to be repeated a minimum of 10 times.

 

 

 

19 hours ago, dams3 said:

i really do not understand the first part of what you wrote. Can you maybe explain?

So what did you not understand?

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40 minutes ago, Canada EH said:

Yes thats been told, seems to be repeated a minimum of 10 times.

 

 

 

So what did you not understand?

i didnt understand anything i just guessed what you meant and i was right

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LOL good stuff dams3 :)

Its a full moon out, so that explains my headaches today the last few days.

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