Sign in with
Sign up | Sign in
Your question

I cant install more than 5GB memory... HELPPPPPPPP

Last response: in Memory
Share
Anonymous
a b } Memory
October 20, 2010 12:48:46 PM

Hi Guys,

I've got an Abit KN9(NF-MCP55 series) mobo which is supposed to be able to take upto 8GB ram so funnily enough I bought 4 2GB chips of the following and all my comp wants to do on power up is lengthy beeps if i try to install any more than 5GB. Help please :??: 

2GB Corsair XMS2 DDR2 6400

My previous setup was:

Slot - 1: Corsair TwinX 1GB DDR2 6400
Slot - 2: Corsair TwinX 1GB DDR2 6400
Slot - 3: Corsair TwinX 1GB DDR2 6400
Slot - 4: Empty

The two options that DO work are:

Slot - 1: Corsair TwinX 1GB DDR2 6400
Slot - 2: Corsair TwinX 1GB DDR2 6400
Slot - 3: Corsair TwinX 1GB DDR2 6400
Slot - 4: 2GB Corsair DDR2 6400


Slot - 1: Empty
Slot - 2: Empty
Slot - 3: Empty
Slot - 4: 2GB Corsair DDR2 6400

I've tried all the new chips in the same slot to check to make sure the memory wasnt corrupt because i know slot 4 works with the 2gb chip; and ive also tried each one of the other memory chips in different slots, but that didn't help either.

I've upgraded the bios to version: 6.00 PG (newest I could find) but that still didn't help matters.

:bounce:  PLEASSEEEEE HELLLLLLLPPPPPPPP :bounce: 

Cheers in advance guys.

Tone

a c 347 } Memory
October 20, 2010 2:15:09 PM

Welcome to Tom's Forums! :) 

This is a case of Mix-Matching RAM, and the Channels need to be matched {sets} to properly work properly.

Per your Manual {A-Typical}:
"For a 4-DIMM dual-channel installation: Populate 2 DIMM modules of the same type and size on slots [DIMM1]+[DIMM2], another 2 DIMM modules of the same type and size on slots [DIMM3]+[DIMM4]."

Note: "Usually there is no hardware or BIOS setup requires after adding or removing memory modules, but you will have to clear the CMOS memory first if any memory module related problem occurs."

Proper Configurations:
Slot - 1: Corsair TwinX 1GB DDR2 6400
Slot - 2: Corsair TwinX 1GB DDR2 6400
Slot - 3: Corsair TwinX 1GB DDR2 6400
Slot - 4: Corsair TwinX 1GB DDR2 6400

Slot - 1: Corsair TwinX 1GB DDR2 6400
Slot - 2: Corsair TwinX 1GB DDR2 6400
Slot - 3: 2GB Corsair DDR2 6400
Slot - 4: 2GB Corsair DDR2 6400

Slot - 1: 2GB Corsair DDR2 6400
Slot - 2: 2GB Corsair DDR2 6400
Slot - 3: Corsair TwinX 1GB DDR2 6400
Slot - 4: Corsair TwinX 1GB DDR2 6400

NOT Recommended:
Slot - 1: Corsair TwinX 1GB DDR2 6400
Slot - 2: Corsair TwinX 1GB DDR2 6400
Slot - 3: Corsair TwinX 1GB DDR2 6400
Slot - 4: 2GB Corsair DDR2 6400

Tested Corsair RAM - http://www.corsair.com/configurator/product_results.asp...
Certified RAM - http://www.abit.com.tw/test-report/kn9.htm?2

Good Luck!
October 20, 2010 6:09:26 PM

The only way to go above 4 gb of memory is to install a 64 bit os.
Related resources
a c 347 } Memory
October 20, 2010 6:46:28 PM

^ You can put >4GB in a 32-bit, it just will 'ignore' the RAM, but it won't cause the MOBO 'beep codes' unless the RAM is incorrectly installed or incompatible with the MOBO.

Correct in that 2^32 is limited to 4GB or ~ 3.5GB usable.
a b } Memory
October 20, 2010 8:22:42 PM

To add on to what jaquith mentioned, a lot of mobos need a little more power when occupying all four DIMM slots. That being said, to increase your likelihood of stability, increase your DRAM voltage by ~.1
Anonymous
a b } Memory
October 21, 2010 7:40:54 AM

Cheers Folks.

We had a play around last night and the best we could get was a 2GB chip in slots 1,2 & 3. This gave us 6GB in total.

If we put the last 2GB chip into slot four and pressed the power button. The fan kicks in but there are no beeps at all and nothing on the screen.

I've recently upgraded the comp to windows 7 64bit ultimate to accept the new RAM.

Cheers T_T, I'll see what my IT mate thinks of the voltages.

Tone
a c 347 } Memory
October 21, 2010 2:36:31 PM

Slot 4, the last slot {6) for some, often gets the least power; however, as I first stated this is a 'frequent' problem posted here and the solution is to use one of the 'Proper Configurations' posted above.

In addition, you want the RAM to be a 'clone' of Type, Speed, CAS timings, and Voltage to function properly.

Examples:
RAM case1
2X1GB DDR2 1333 MHz, 7-7-7-22 @ 1.50V
2X2GB DDR2 1333 MHz, 7-7-7-22 @ 1.50V

"Might Not Work"
RAM case2
2X1GB DDR2 1333 MHz, 7-7-7-22 @ 1.50V
2X2GB DDR2 1333 MHz, 7-7-7-22 @ 1.65V
Voltage set manually and the 1GB would run hot; 1.55~1.65V

"Might Not Work" but if it does the speed or timings need to be the WORST of the (2)
RAM case2
2X1GB DDR2 1066 MHz, 7-7-7-22 @ 1.50V
2X2GB DDR2 1333 MHz, 9-9-9-22 @ 1.50V
==============================
RAM DDR2 1066 MHz, 9-9-9-22 @ 1.50V

Good Luck!
!