Spdtool Memory overclocking Tool modifies 667 of memory to 800

AMD platform Memory frequency factor calculation method is as follows: The frequency factor n=cpu the default main frequency x2÷ the memory nominal frequency, obtains the numerical value again uses "enters one method" to take the whole number, notes, "enters one method" is not rounded, but puts the digit after the decimal place, in the front integral part adds one At this time the actual operation of memory frequency F=CPU main clock division frequency coefficient N. (CPU frequency increase, will make the actual operating frequency of memory increase) the above AM2 interface Athlon64 3000+ with DDR2 667 memory as an example, n=1800x2÷667≈5.397, take the integer = 6,

At this time the actual operating frequency of memory F=1800mhz÷6=300mhz, that is, ddr2-600. By this formula, if my laptop can support 800 of the memory, then our memory can be used to ddr2-720 MHz, there should be some improvement in machine performance everyone, because of the discovery of AMD memory control is about the maximum frequency of memory, in the spirit of Mount, I took out my own memory strips for a brush SPD upgrade action. I have 2 Kingston 1G, usually in use, there is an idle modern 1G, Hewlett-Packard original notebook demolition machine down. So I decided to take the modern surgery first, in case of failure will not have any great impact on me.

Results this modern how can not brush in, I went to the forum to ask, just know many notebook brand original memory with the SPD write protection, that is, you can not change the contents of the inside, write protection can not be lifted. So I had to take the risk of 2 Kingston on active duty, these 2 Kingston are I bought from the market, so should be able to brush the SPD I first took a plug in the computer, the boot, run the Spdtool program, read the memory, and then save the cost of file backup, so I in case the brush failed, You can also use a backup brush back to the original. Look, this is my 2.

Dual-channel memory, one of which has been refreshed, and compared to another, has become a ddr2-800 of memory, haha

This is 2 memory has been refreshed to ddr2-800 after the memory performance test results, dual channels, than the refresh before the upgrade.

My 90 nm tk-55cpu, now memory running in dual channel 723, at 800 low frequency operation is voltage down to 0.9 volts. Full speed is 1.1 volts.

Spdtool Memory overclocking tool Download: http://www.cr173.com/soft/30207.html

　　This is the Refresh tool spdtools , below I teach you how to refresh their 667 memory to 800, very simple, as long as the change of 5 values on it. It is best to leave the memory only one on the machine and then read and then back up. the values that need to be changed are:

1. SDRAM Cycle time at Maximum supported CAS latency (maximum CAS latency for memory support), where the value is: 3.00ns (333MHz), we change to: 2.50ns (400MHz);

2, Minimum Clock Cycle at CLX-1 (minimum cas latent period 1); 3.00ns (333MHz)

3, Minimum Clock Cycle at CLX-2 (minimum CAS latency 2), change to 3.75ns (267MHz) to this point, the following 4, 52 are not recommended for change, because I test found that after the change is likely to slow down the memory speed.

4, Minimum Row precharge Time (TRP), 15.00ns to 12.50ns

5. Minimum RAS to CAS delay (TRCD); change 15.00ns to 12.50ns, OK, then you write, if there are many errors in the write, the basic means that your memory has SPD write protection, sorry, you can not upgrade. After the write is complete, reboot the computer and you will see a ddr2-800 memory appearing in front of you!