Why does my PC seems slower in 3gb Ram than it was with 2gb Ram?

[RifatAhmed]

I had 2 1gb sticks installed but today i upgraded one stick with a 2gb stick so it's 3gb and technically it should've made the pc faster but instead i feel it has slowed down!

I use Bluestacks with 2gb ram it used to run smoothly but now after upgrading the ram it's laggy all the time! 🙁

 

[13thmonkey]

you've gone from dual channel, to probably not dual channel, or perhaps only 2Gb at dual channel, and windows will use memory randomly, so some will be faster than others. You're lucky it worked.

 

[JoeMomma]

First of all 3GB is not enough to run Windows. 4GB is minimum - 8GB is recommended.

Memory should always be replaced as a matched set. It is possible to buy one stick now and the exact same stick later, but even that is taking a chance.

If you pair up mismatched memory either the motherboard will run at the speed of the slowest stick
or it will explode your motherboard like I did to mine the first time I tried to just slap in some mismatched memory.

If 3GB is running slower than 2GB, just take it out.

 

[helpstar]

which RAM models are you using exactly? Have a look at the labels of these and write it down

which motherboard, CPU are you using?

which operating system?

 

[RifatAhmed]

which RAM models are you using exactly? Have a look at the labels of these and write it down

which motherboard, CPU are you using?

which operating system?

1gb ddr2 stick is of twinmos & the 2gb ddr2 stick is of samsung

pentium dual core cpu e5300

windows 10

 

[helpstar]

which frequencies and timings do these modules have?

windows 10 32bit or 64bit installed?

 

[RifatAhmed]

which frequencies and timings do these modules have?

windows 10 32bit or 64bit installed?

well donnno about those but i have the 64 bit installed

everything is running perfectly except bluestacks and ram usege is just like before more than 1gb is free 🙁

 

[helpstar]

well, then maybe the RAM is slower or needs more time to run

post the information on the labels of the RAM

 

[RifatAhmed]

well, then maybe the RAM is slower or needs more time to run

post the information on the labels of the RAM

1gb Twinmos:
DDR2-800 1GB U-DIMM
64x8 16C CL 5.0
8DQT5KK5-TATP

2gb Samsung:
2GB 2Rx8 PC2-6400U-666-12-E3
M378T56663EH3-CF7 1103

 

[JoeMomma]

well, then maybe the RAM is slower or needs more time to run

post the information on the labels of the RAM

1gb Twinmos:
DDR2-800 1GB U-DIMM
64x8 16C CL 5.0
8DQT5KK5-TATP

2gb Samsung:
2GB 2Rx8 PC2-6400U-666-12-E3
M378T56663EH3-CF7 1103

Well that's your problem right there!

The original Twinmos RAM is 800 speed with 16 timing.
and the new Samsung RAM is 666 speed with 12 timing.
You have downgraded your PC from 800 to 666.

You are lucky your PC still works.

 

[helpstar]

the samsung actually is 800MHz (PC26400U) too, with CL7 should be a typo there
M378T5663EH3-CF7

the timings of the twinmos RAM ist still better (CL5) but your system is bound to the timing of the worst -> CL6. You can try to lower the timing in BIOS, but it´s unlikely the system will run stable then

check with the tool CPU-Z, at which clock the RAM actually currently runs. Go to the tab "memory". There the DRAM frequency will be shown. The "real" frequency will be double because of DDR (double data rate) marketing.
Alos there will be shown if the RAM is running in dual channel mode or not and the actual timings

like:
http://members.chello.nl/r.wieland1/memory.jpg


To be sure your RAM works fine, run memtest from a burnt CD or try booting with an USB flash drive (USB autoinstaller www.memtest.org)

 

[RifatAhmed]

well if i upgrade both to the 666Mhz samsung 2gb+2gb will i get around twice speed than i had with the 800mhz 1gb+1gb? or will it just give a lil bit boost?

When 3gb Installed: http://prntscr.com/h9ppzq
When 2gb Installed: http://prntscr.com/h9pq3a

 

[helpstar]

Post a Picture of the SPD tab. Maybe you can set 800 MHz in bios directly.

 

[RifatAhmed]

nothing shows on te SPD rab when i put 1gb+2gb same when i just put the 2gb stick

but with only the 2gb stick it shows 400 Mhz in the memory tab and all other clock cycles seems to be more than with the 1gb+1gb stick: http://prntscr.com/h9r1fl

 

[RifatAhmed]

btw how to change the speed to max in bios?

 

[helpstar]

Which motherboard do you use?

For SPD in CPU-Z:
Did you chose the Slot number? Should look like this:
https://pics.computerbase.de/1/6/7/5/9/11-1080.3704065320.png

Could be that a restart of windows can help with this. Otherwise uninstall cpu-z and reinstall it.

In general or similar go to advanced -> dram configuration and set dram frequency to 800MHz and the timings like shown in the latest screenshot of yours. Eventually set dram config from auto to manual, to be able to alter the settings.

if the system won´t boot after that, just reset the BIOS by jumper and try other timings, e.g. CL7

 

[RifatAhmed]

Which motherboard do you use?

For SPD in CPU-Z:
Did you chose the Slot number? Should look like this:
https://pics.computerbase.de/1/6/7/5/9/11-1080.3704065320.png

Could be that a restart of windows can help with this. Otherwise uninstall cpu-z and reinstall it.

In general or similar go to advanced -> dram configuration and set dram frequency to 800MHz and the timings like shown in the latest screenshot of yours. Eventually set dram config from auto to manual, to be able to alter the settings.

if the system won´t boot after that, just reset the BIOS by jumper and try other timings, e.g. CL7

my motherboard details: http://prntscr.com/ha9h4t and its Gigabyte E5300
and yeah i did all those but the SPD tab is always empty whenever that 2 gb stick is inserted btw if I insert a 800mhz 2gb ram with that 666mhz will the pc run normally at 666mhz (without tweakings)?

 

[helpstar]

you can find the DRAM config in the BIOS of your motherboard. Which motherboard are you using?

 

[RifatAhmed]

you can find the DRAM config in the BIOS of your motherboard. Which motherboard are you using?

my motherboard details: http://prntscr.com/ha9h4t and its Gigabyte E5300

btw if i downgrade bus speed from 800 to 666 and upgrade 2gb to 4gb will it be worth it? i mean will i get better speed?

 

[helpstar]

Try 800MHz at CL6 in BIOS, this should work easily. Just discovered that the samsung ram is CL6 and not cl7

have a look at the manual and get on page 32
to enter the bios press del key

then get on page 35
enter MB Intelligent Tweaker(M.I.T.)
set system memory multiplier from auto to manual and set the frequency to 800MHz

save the settings by hitting F10

 

[RifatAhmed]

alright thanks for now i'll get back in a week after buying a 2nd 2gigs stick and then tell what happened!!

 

[helpstar]

Get the same M378T5663EH3-CF7, which is 800MHz and CL6 timing. It´s not like previously stated 666MHz with CL7. That was a mistake.
If you get the same samsung 2gb, it should run at 800MHz CL6 without problems

 

[RifatAhmed]

oh great then 😀 i'll probably get that one by next wednesday

 

[RifatAhmed]

well i got the 2nd one today here's how it is in Memory tab: http://prntscr.com/hbzzfl
here's the SPD tab: http://prntscr.com/hbzzph

btw i tried overclocking from BIOS but then the PC was failing to boot every 5 seconds after i turned it on then I just reset the BIOS 🙁
never the less i should have the same speed as before now right?

 

[RifatAhmed]

one thing to add now the pc is slow with those 4gigs than it was with 2gigs 🙁