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Will my i7 860 recognize 6 gb of ram?

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  • CPUs
  • RAM
  • Intel i7
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September 26, 2010 10:41:16 PM

I have 6gb of ram currently installed on ASUS p7p55d pro and bios only shows 4gb installed. Is it because of the i7-860, the ram is Corsair XMS3 6gb tri-channel.

More about : 860 recognize ram

a c 377 à CPUs
September 26, 2010 11:32:59 PM

I7-860 has nothing to do with it. Check your motherboard carefully, to be certain that your sticks are in the proper slots. Where you put the ram is important, and not obvious on Asus motherboards.

You mught use memtest86+ to check out each stick individually to be certain that you do not have a bad stick.
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September 26, 2010 11:42:21 PM

I have sticks installed in first 3 slots from left to right and they are seated firmly
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a c 83 à CPUs
September 27, 2010 12:07:06 AM

What operating system are you using?
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September 27, 2010 12:23:03 AM

I am using windows 7 64 bit....I have switched the sticks around and it still says only 4gb installed in the bios so I dont have a bad stick
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a c 158 à CPUs
September 27, 2010 12:24:55 AM

Your motherboard doesnt support triple channel memory. I'm not sure what happens in this case. Undoubtedly your memory would not be on the supported memory listing.

Have you upgraded the bios? There have been at least 1 update for memory issues.

What happens if you turn off dual channel in the bios?
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September 27, 2010 12:33:44 AM

I haven't updated the bios. how do I turn of dual channel in the bios? I checked my asus manual again, the ram I have is listed as being compatible
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a c 377 à CPUs
September 27, 2010 12:35:26 AM

I have a Asus P6T X58 motherboard with 6 slots and 3 channels. In my manual, it says that due to Intel spec definition, XMP DIMMs and DDR3-1600 are supported for one DIMM per channel only. Your P55 motherboard has only two channels. Is your ram 1600? and, does your motherboard manual have the same caveat?

Dual channel is set by the bios if you have two sticks of ram, one in each channel. The extra stick will operate in single channel mode.
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September 27, 2010 12:42:50 AM

my ram is 1600...the manual does say that. Does that mean 6gb wont work, only 4 or 8 gb of ram?
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a c 377 à CPUs
September 27, 2010 12:55:53 AM

bennyboy181 said:
my ram is 1600...the manual does say that. Does that mean 6gb wont work, only 4 or 8 gb of ram?


I think it means that if you use the default XMP definition to get 1600 speed, you can only run two sticks. You could try setting the speed in the bios explicitly to less, like 1333 or 1066. Your performance will not suffer to any noticeable extent on a i7 cpu.

Ram is not explicitly 2 or three channel. It is sold in kits of two or three dimms to be used in two or three channel motherboards. If you have an odd extra dimm, that should be OK, it will just run in single channel mode. The extra ram is more beneficial than a couple of percent processor power.
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September 27, 2010 1:02:56 AM

Do you think flashing my bios could fix this? to get the bios to show 6gb instead of 4gb?
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September 27, 2010 5:28:38 AM

Purchase 1 more Stick of Ram and Insert it into the 4th slot. Problem Solved.
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a b à CPUs
September 27, 2010 5:52:22 AM

To be honest 4 GB is enough.But to get 6 GB RAM working on a P55 motherboard which has 4 DIMM slots you will need 2x2GB + 2x1GB I think.
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