hi everyone,

quick question..i have 2 sticks of memory everest reports it as 256mb 133mhz and second stick as 128mb 100mhz.should i take the 128 out or leave it alone??system seems to be running ok.also reports bus speed at 100 mhz.it confuses me so any reassurance would be greatful.
thanx.
keltik

Tech_Tv.

100 mhz. memory? How old is it and where did you get it from, an older computer?

The 100 will cause a bottleneck and slow the data flow down to 100. My suggestion is to get rid of it. You may not notice it when doing low-resource tasks like word processing, spreadsheets, etc. Soon as you try to play some serious video games you will see the slowdown.

For efficient performance, all bus's should run at the same clock: FSB, Processor and Memory all that the same clock. If only one is lower, that is what your system will run at.

Give a man a fish and you feed him for a day;
Teach a man to fish and you feed him for a lifetime;
Then industry pollutes the water and kills all the fish.

hi ranchhand,
my computer is a p3 450mhz ya its old but runs pretty decent. this is what everest reports on both sticks.

Field Value
Memory Module Properties
Module Name Hyundai 71V32635HCT8-H
Serial Number 852BC1E6h
Module Size 256 MB (2 rows, 4 banks)
Module Type Unbuffered
Memory Type SDRAM
Memory Speed PC133 (133 MHz)
Module Width 64 bit
Module Voltage LVTTL
Error Detection Method None
Refresh Rate Normal (15.625 us), Self-Refresh

Memory Timings
@ 133 MHz 3.0-3-3-6 (CL-RCD-RP-RAS)
@ 100 MHz 2.0-2-2-5 (CL-RCD-RP-RAS)

Memory Module Features
Early RAS# Precharge Not Supported
Auto-Precharge Supported
Precharge All Supported
Write1/Read Burst Supported
Buffered Address/Control Inputs Not Supported
Registered Address/Control Inputs Not Supported
On-Card PLL (Clock) Not Supported
Buffered DQMB Inputs Not Supported
Registered DQMB Inputs Not Supported
Differential Clock Input Not Supported
Redundant Row Address Not Supported

Memory Module Manufacturer
Company Name Hynix Semiconductor Inc.
Product Information http://www.hynix.com/eng/products/dram/index.jsp

Field Value
Memory Module Properties
Serial Number None
Module Size 128 MB (1 rows, 4 banks)
Module Type Unbuffered
Memory Type SDRAM
Memory Speed PC100 (100 MHz)
Module Width 64 bit
Module Voltage LVTTL
Error Detection Method None
Refresh Rate Normal (15.625 us)

Memory Timings
@ 133 MHz 3.0-3-3-6 (CL-RCD-RP-RAS)
@ 100 MHz 2.0-2-2-5 (CL-RCD-RP-RAS)

Memory Module Features
Early RAS# Precharge Not Supported
Auto-Precharge Supported
Precharge All Supported
Write1/Read Burst Supported
Buffered Address/Control Inputs Not Supported
Registered Address/Control Inputs Not Supported
On-Card PLL (Clock) Not Supported
Buffered DQMB Inputs Not Supported
Registered DQMB Inputs Not Supported
Differential Clock Input Not Supported
Redundant Row Address Not Supported

yet the sticker on the 128 says 133mhz thats why i purchased the 256mb 133mhz a year ago.but everest reports it as 128 mb 100 mhz.this is why im confused.

ill take out the 128 see what happens.maybe i will buy a stick of 256mb 100 mhz if it means better performance on this machine.
thanx alot,
keltik

Tech_Tv.

Some memory says it is pc133 and pc100 meaning that the memory is compatible with both pc133 and 100. Having mixed memory doesn't hurt anything but your system will always run at the slower speed. (although some os are pickier about mixed memory than others)When I had windows ME (a terrible operating system) I ran pc100 and 133 memory with no problem. But when I swithed to windows xp home the system started to become unstable so I now only run pc133. Hopefully this answers your question.
Jonathan

hi mohaa,
thanx for the reply,i ve takin out the 100mhz and im running the 256 133 mhz so far so good,no noticable diffrences in speed.ill wait and see when my computer has been left on for a few days and see what happens.had memory problems with xp memory, usage grows while doing minimal tasks and doesnt reduce when apps are closed.maybe it was the 2 diffrent memory sticks,not really sure ill see in a few days.
keltik

Tech_Tv.