Solved About speed of RAM

December 11, 2012 at 01:52:52
Specs: Linux x86_64, AMD Phenom II 4X
Hi all,

This is a newly built PC with following config

AMD 8-core FX-8150 CPU
Motherboard ASUS M5A97R2.0
Video card ASUS HD6450 Silent 1GB DDR3
Hard Disk WD 2TB Black Series
RAM Kingston HyperX KHX1600C10D381K2/16G (2x8G) (Blue Memory)
OS Ubuntu 12.04 desktop 64bit

Installation w/o problem. PC is now working.

$ sudo lshw -short -C memory
H/W path Device Class Description
/0/0 memory 64KiB BIOS
/0/4/5 memory 384KiB L1 cache
/0/4/6 memory 8MiB L2 cache
/0/4/7 memory 8MiB L3 cache
/0/2c memory 16GiB System Memory
/0/2c/0 memory DIMM Synchronous [empty]
/0/2c/1 memory 8GiB DIMM DDR3 Synchronous 1333 MHz
/0/2c/2 memory DIMM Synchronous [empty]
/0/2c/3 memory 8GiB DIMM DDR3 Synchronous 1333 MHz

Showing the RAM speed is 1333 NOT 1600?

ASUS M5A97 R2.0 Specification

Kingston HyperX KHX1600C10D381K2/16G (2x8G) (Blue Memory)

The RAM sticks are inserted on slot-1 and slot-3
(counted from the Power Supple Connectors-socket)

Did I make mistake here? Pls advise. TA


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December 11, 2012 at 05:04:40
The FX-8150 officially supports up to DDR3-1866. Your RAM model number is KHX1600C10D3B1K2/16G. Here's the spec sheet, notice that it says "The SPD's are programmed to JEDEC standard latency DDR3-1333 timing of 9-9-9 at 1.5V."

If you're simply running the default BIOS settings, the BIOS configures the RAM to the SPD. You need to manually configure the memory settings to run the RAM at 1600MHz.

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December 11, 2012 at 06:33:53
✔ Best Answer
I got it.

Memory Frequency - Auto

change Auto -> DDR3 1600


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