RAM Upgrade
by lattimro from LinuxQuestions.org on (#6DY0Z)
Hi Folks,
I will like to try upgrading my DDR3 and I was looking for info but I am confused with the following:
- Ubuntu 22.04.3 LTS, Linux 6.2.0-26-generic: memtest86 (or memtest86+) reports 1600 MHz and dmidecode reports Speed: 1333MT/s
- Windows10 and CPU-Z reports Speed: 1333MT/s
From Notebook Specification:
Quote:
The issue that I am confused is that dmidecode, Windows10 and CPU-Z reports Speed: 1333 MT/s, MEMTEST86 and physical memory stick label shows 1600 MHz
AFAIK:
MHz measures RAM speed by how many times it can switch voltage per second, while MT/s measures RAM speed by how much data it can transfer per second.
1600MHz will actually mean 3200 MT/s (dmidecode reports of my DDR only 1333 MT/s) because the data rate is double the frequency or clock speed in DDR RAM.
Installed DDRL is a single-rank module 1Rx8 and PC3-12800S Low Voltage (1.35V). By far 1.35V should not be a concern as nowadays the sticks are dual-voltage (1.35/1.5V).
So the main question is why 1333 MT/s is reported?
I attached some info for your review. Thanks so much!
Attached Thumbnails
Attached Files
I will like to try upgrading my DDR3 and I was looking for info but I am confused with the following:
- Ubuntu 22.04.3 LTS, Linux 6.2.0-26-generic: memtest86 (or memtest86+) reports 1600 MHz and dmidecode reports Speed: 1333MT/s
- Windows10 and CPU-Z reports Speed: 1333MT/s
From Notebook Specification:
Quote:
Product Name15-r011dx Product NumberG9D66UA Microprocessor2.17GHz Intel Pentium N3520 Processor with Turbo Boost up to 2.42GHz Memory4GB DDR3L SDRAM (1 DIMM) Memory Slots1 user accessible |
AFAIK:
MHz measures RAM speed by how many times it can switch voltage per second, while MT/s measures RAM speed by how much data it can transfer per second.
1600MHz will actually mean 3200 MT/s (dmidecode reports of my DDR only 1333 MT/s) because the data rate is double the frequency or clock speed in DDR RAM.
Installed DDRL is a single-rank module 1Rx8 and PC3-12800S Low Voltage (1.35V). By far 1.35V should not be a concern as nowadays the sticks are dual-voltage (1.35/1.5V).
So the main question is why 1333 MT/s is reported?
I attached some info for your review. Thanks so much!
Attached Thumbnails
 | hp.txt (12.4 KB) |
| ZIKAW10HOME.txt (53.4 KB) |