Question about using OC or downclocking if the RAM fails.
Question about using OC or downclocking if the RAM fails.
Hi. I purchased 1600MHz RAM that should be compatible with my Toshiba Satellite L555-130 (based on the Amazon compatibility tool). The laptop crashes when using this RAM, not with the older 1066MHz version. I can't return the RAM, it's too late. Can I try downclocking the new RAM or overclocking the CPU? Are there simple software options for this on Linux or Windows? (Windows is quite slow for this.) I don’t have any experience with overclocking, so please don’t dismiss my questions.
Welcome to the forums my friend!
What kind of RAM did you purchase exactly?
You seem to be replacing the 1066 entirely—probably not mixing it with the old one.
I think the speed issue is unlikely; if the RAM works, it’s more likely a faulty component. Normally, the system would automatically slow down the RAM if it can’t run at the required speed or won’t boot. However, your laptop can definitely support 1600 RAM.
Run a memtest to verify the new modules, and if you find any errors, return the RAM.
Well if it's a well-known RAM model, it's likely covered by a warranty. The POST test isn't really about memory—it's more about counting fingers and toes, in a way. Your laptop doesn't let you adjust RAM speeds, timings, or voltages through the BIOS; the only options are using two sticks—1066 and 1600. Mixing them isn't usually advised, but it can sometimes slow things down when you're trying to force a slower performance. Since it's an Intel product, different stick combinations might behave differently in flex channel mode. Running it through software after Windows starts isn't suggested, even if something seems possible, because it could damage your files and make the system unstable. The better method is using an SPD programmer, which changes the RAM settings directly on the sticks themselves. You can tweak timings or even remove the 1600 column to use 1333, but changing the voltage isn't usually an option as the laptop won't accept non-JEDEC values.
That's a quick reply, really appreciated!
The new RAM is 2 x Samsung 4GB DDR3 SO-DIMM at 204 pins, PC3L-12800S, 1600MHz, M471B5273CH0-YK0. It doesn't work because the laptop shuts down briefly—about a minute after booting—before it loads Linux or Windows.
The old RAM is 2 x Hynix 2GB PC3-8500 DDR3-1066MHz, non-ECC, unbuffered CL7, 204 pins, HMT125S6BFR8C-G7. It functions properly.
I completely swapped the RAM and haven't mixed them yet, as the advice suggested. I've already done it and used a memtest tool at startup; the issue still occurs during testing.
I can't send back the RAM since I bought it a few months ago and delayed installing it.
I agree. You may not be able to return it to the seller, but you can sure as heck RMA it with the manufacturer under warranty. I get faulty sticks of RAM all the time. Maybe I'm just unlucky.
There's also a very real possibility that the RAM you bought is locked out by the vendor. I'm only finding Toshiba sticks when I search ram compatibility lists for your model.
Your laptop will run the RAM at whatever speed it feels comfortable with. I guarantee if you
download CPUz here
and look at the memory tab, it will report the 1600MHz RAM is actually running 533MHz (1066MHz effective).
I reached out to Samsung, they advised me to try Amazon instead. I followed their instructions and it seems they could possibly accept a return, though they haven’t replied yet.
Apologies for the delayed reply.
Thank you for clarifying what works and what doesn’t. I’ll experiment with mixing RAMs as you advised. (Regarding the SPD programmer, it’s a bit too technical for me.)