Good article explaining how to use Thaiphoon Burner to change RAM clocking speed. By default faster ram most likely will have an issues and the computer may not even start (depends on RAM setup)
USE THIS ON YOUR OWN RISK! YOU MAY DAMAGE YOUR RAM/NOTEBOOK!!
I Use Thaiphoon Burner 7.X on my Windows 7 64 bit.
(you need the "full Version" to be able to write the modified data to RAM!)
1.) Start Windows with "deactivated Driver signature force"
(F8 before windows starts)
2.) Read Data from Ram
Press on" Read" and choose your RAM to want to read from.
3.) Press "Editor" to open the timing editor
4.)Choose the frequenz where you want to change the timings
The ratio FSB to RAM is 1:3.
The default FSB is 133mhz so the RAM is running @ 400 Mhz (you can not change this!) so i change the value (Min SDRAM cycle time) so the Clock frequenz is showing 400Mhz.
5.) Choose the latency you want to use at 400Mhz
Change the value "Min CAS latency Time" so that the "DEF CAS" is showing the Latency you want to use. ( in my case: CL7)
6.) change the timings
Of course you have to change all the other timings.
Well - i use 7-7-7-20 and i changed the other values a little bit - maybe someone know how to calculate the other timings - i just raise them up a little bit.
7.) Press next to choose what you want to do with your new config.
I always update the Hex editor.
After that i check the checksum (EEPROM - correct Checksum).
Now you can write the timings to RAM and make a reebot.
- After the first "READ" save your config in a file to have a backup!
- DON'T ever change the CL over CL8! The Bios is not able to work with the RAM using CL9 or higher!
- I don't know whether my timings are perfekt - but they work fine ;-)
- When you "killed" a ram and the notebook will not come up anymore: use a working RAM, start your notebook and plugin the not working RAM while the System is running (ON YOUR OWN RISK!) it works fine - Thaiphoon Burner is able to work with this RAM an you can restore the timings from your backup.
Why to change the timings?
The Bios is using the RAM @400Mhz with the specific timings (6-6-6-18 in my case.)
Whe I use an overclocked FSB from 166 Mhz, the RAM is working at 500Mhz (you overclocked your RAM very much!!!)
So you have to slow down the timings to get a stable work of the RAM.