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Ram in slot 2 and 4 800mhz

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August 5, 2014 8:29:05 AM

ok my ram sticks are in slot 2 and 4, slot 1 3 are empty, does this effect my ram speeds or anything or does it run the same, also they are meant to run at 2400mhz but are only running at 800mhz, i changed it in the bios is this because the process it is running at the time of checking don't need the ram to go faster, my pc is set to balanced power setting instead of high performance could this effect cpu or ram in anyway, and would setting it to high performance cause my battery psu to become loud. sorry there are a few things i need help with i hope someone can please help will rate best answer quickly thanks.

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a b à CPUs
August 5, 2014 8:42:21 AM

You may need to set the XMP profile from your BIOS so they can work at 2400 MHz. For them to work in dual channel check your motheboard's manual to see which slots work in dual channel or see the slots with the same color.

The real speed of RAM is half of they advertise, 2400 MHz is actually 2400 MT/s bidirectional or 1200 MHz on each direction (send and receive).

By default, RAM sticks work at its native speed or at the maximum speed the controller supports, even if they are higher clocked, today is usually 1600MT/s (800MHz). Sometimes you have to set the higher speeds in the BIOS with the XMP profiles.
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August 5, 2014 8:55:05 AM

Brunostako said:
You may need to set the XMP profile from your BIOS so they can work at 2400 MHz. For them to work in dual channel check your motheboard's manual to see which slots work in dual channel or see the slots with the same color.

The real speed of RAM is half of they advertise, 2400 MHz is actually 2400 MT/s bidirectional or 1200 MHz on each direction (send and receive).

By default, RAM sticks work at its native speed or at the maximum speed the controller supports, even if they are higher clocked, today is usually 1600MT/s (800MHz). Sometimes you have to set the higher speeds in the BIOS with the XMP profiles.


ok great would my pc have a problem starting back up if i switch the sticks to slot 1 and 3 ? thanks
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a b à CPUs
August 5, 2014 9:10:15 AM

No. But why would you want to switch them? If slots 2 & 4 work in dual channel, they are ok there.

What model is your motherboard?
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August 5, 2014 10:40:18 AM

Brunostako said:
No. But why would you want to switch them? If slots 2 & 4 work in dual channel, they are om there.

What model is your motherboard?


Its gigabyte Ga-990-ud5
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a b à CPUs
August 5, 2014 10:50:20 AM

That motherboard does not support 2400MHz RAM neither XMP profiles. Its maximum is 1866MHz and beyond that is overclock only.
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