1066 Hz for RAM

Hi!

I just bought two Kingston 4gb DDR3 RAM modules to install on my old Acer Aspire 5741 to give it new life. However... Windows did not boot after installing them, so I switched to the old 2gb RAMs I had.

I've been researching (always after the fact, of course) and saw that the laptop service manual ( http://tim.id.au/laptops/acer/aspire 5741 5741g.pdf) says that the slots are for 800/1066 MHz, and the KVR16s11s8/4 manual ( https://www.kingston.com/dataSheets/KVR16S11S8_4.pdf) says 800MHz fCK for 1600Mb/sec/pin.

Am I out of hope? Can I make them work in my slots? Would these actually work?

 

Update your BIOS to the latest disponible from the Acer site, make sure to select the correct model.
1600Mhz should work because the RAM works at lower speeds, but sometimes the BIOS is a bit bugged and wont select the correct JEDEC table from the RAM and it wont boot.
If it doesn't work with the latest BIOS you might need to return the RAM's and get ones with a max speed of 1066Mhz.

 

Try re-seating the RAM modules and try one stick at a time. It may be that one or both sticks are defective. Lastly, update the BIOS as senso suggested.

It could also be that your laptop does not like high density RAM modules which I am pretty sure is what the Kingston Value Ram series uses. Try to send the sticks back and get low density RAM if you can't get it to work.

 

BIOS is already updated to the latest version. I tried installing them one by one, but still no luck.

How do I see the density of the RAM?

Thanks all!

 

Pretty much nailed it.

For Westmere generation (1st-gen dual core i3/i5/i7) laptops, to get 8GB RAM one must use 4GB RAM modules with 8 chips on each side (i.e. 16 chips on both sides).

I've tried using the modules from my 2570p (which have 4 chips on each side) in my E5510, 2740p and my friend's X201 (all three are Westmere-gen models) and they either BSODed while booting Windows or didn't POST. Did the same on other models and got the same results. Once I installed their original 8GB kit (have 8 chips on each side) back they booted fine.

Lastly, the 8GB kit in the link should work as they have 8 chips on each side, but 1333MHz and 1600MHz modules also work.

 

Like OverTallman stated it has to do with the number of chips on the module. If a 4GB module has a total of 8 memory chips, then it's probably high density while 16 chips on a 4GB module usually indicates it is low density.

If you want a recommendation on a good 8GB kit which should give you zero issues, look at this one:

https://www.newegg.com/Product/Product.aspx?Item=N82E16820231342

 

Fantastic! Thanks! I'll update the post when they get here.

Cheers

 

I've been using the same kit in my M15X for around 6 years now (same 1st gen Core-i series as yours). I never had an issue. G.Skill makes really good RAM.

 

Hello again.

I am trying to find similar products in webs that sell in Spain (where I live). Most of them say they are for Mac. Is there any difference in memory for Mac or PC?

Would this work?