Problem: under win7-64-bit 8G memory, the performance of SSD is low, and 4k random read and write is slow. As ssd benchmark 4k random read and write does not exceed 10M/s, and the final score is only more than 100 points.
The answer turned out to be through Baidu search "the
old computer upgrades 8g memory and ssd at the same time", I don't know which webpage provides a zol Shenzhou forum to find the answer, 4k random read and write exceeds 20M/s
At the beginning, the reason for the sata2 interface was considered, but the speed of the sata2 interface is half of that of the sata3. Even if it is half, the score of the Samsung 850pro can reach more than 500 points. The 4k random should be more than 1 and a half.
Reinstalled the system several times, and tested it before and after the system was installed after the patch was updated. The problem does not appear on the system patch.
The driver is up to date and does not appear on the driver
The problem is located in the hardware cpu heat dissipation and memory. In the end, the previous 2G*2 Kingston performance was very good, so the problem was located in the memory. I remembered that there seemed to be a low voltage mismatch when I replaced the memory before, so I judged that the memory may not be compatible. match, 1600 does not support the original 1333,
Today, I went to the computer city to try the memory sticks of Kingston and Samsung, and found that the performance of the 4G memory system is very good, but the performance of the 8G memory system is very bad, which is also related to the memory size.
The following keyword searches were carried out:
In fact, you can consider that this has nothing to do with ssd, you can search as follows
8g memory win7 64 card
A460 8g memory card starts slowly
4g memory upgrade 8g system card slow start
win7 64 memory increase 8g performance slow
Bought a new 4gx2 Kingston genuine installed on the 460, the machine is extremely slow to solve
Solve the problem that the large memory is stuck under the win7 system and the startup is slow
win7 64 8g memory card boot slow
finally found
When the performance is reduced, the memory is actually a feature of the Shenzhou computer A460. The solution is to enter msconfig and tick the maximum memory.
careless
Set to 0 to solve
Cause the blue screen can be solved this way
Win7 msconfig maximum memory is set to 0 solution
Use the win7 installation disk (or the pe system, or another disk to start, the problem disk is the slave disk) to enter the command prompt for startup repair
Use the bcdedit command to view.
You can view your startup parameters.
Check if truncatememory is 0x10000000 (mine is this).
Then execute the following command
bcdedit /deletevalue {default} truncatememory
Remove the default boot memory settings.
Use bcdedit to confirm whether there is no truncatememory item anymore.
Then reboot and everything is ok.