Problem with N68-S UCC, CPU and RAM

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   Hi guys.Sorry for my bad english but i'm difficult in this language. I'm an italian guy.

8 years ago i assembled my desktop PC with this specification:
- CPU: AMD Athlon x64 dual core 6000+
- MOTHERBOARD: Asus M2N4-SLI
- RAM: 2x1GB DDR2 PC-6400 Kingstone (800MHz)
- HDD: Maxtor 160GB + Maxtor 250 GB
- GPU: Nvidia GeForce 8600GTS
- SO: Windows XP  Professional 32bit

4 years ago the motherboard and the GPU broke, so i bought a new motherboards and GPU. The last configuration of my PC is this:
- CPU: AMD Athlon x64 dual core 6000+
- MOTHERBOARD: AsRock N68-S UCC
- RAM: 2x1GB DDR2 PC-6400 Kingstone (800MHz)
- HDD: Maxtor 160GB + Maxtor 250 GB
- GPU: Zotac GeForce GT620
- Windows 7 Ultimate 64bit

I use the programs that use a lot of ram, for example Adobe Lightroom, or Adobe Photoshop, etc. So i thought to increase the ram onboard and i bought 2x4GB DDR2 PC-6400 800MHz ram.
I did these tests:
1) I put 2 sticks of ram into the DDR2 slots. I started the PC and windows has loaded correctly. After 10 minutes windows crashed.
2) I removed 1 stick of ram into. I started the PC and windows has loaded correctly. After 10 minutes windows crashed.
In the two tests above the data bus frequency it was set automatically by the bios. The effective data bus frequency was 266MHz (533MHz). This value is below the maximum of possibilities of operation of the ram.

3) I change manually the data bus frequency into the bios. I set frequency to 400MHz (800MHz) with only 1 stick of ram applied. In this case the SO is not crashed for at least ten hours.

4) I applied the second stick of ram (the bus frequency is still set manually at 400MHz (800MHz)). In this case the PC starts successfully, but the SO is not loaded). After 4 reboot the situation has not changed.

5) I formatted the HDD and reinstall Windows 64 bit ultimate and the situation has not changed (the PC starts successfully, but the SO is not loaded).

6) I change the data bus frequency to automatically. The PC starts successfully and after 10 minutes windows crashed.

7) I change manually the data bus frequency to 333MHz (667 MHz). In this case the SO is not crashed for at least ten hours with 2 sticks of ram (tot: 8GB).

The version of the bios is 1.50.
Are there a problems to the latency times or other parameters?
What do you think? 

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PeLLe Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 Feb 2016 Status: Offline Points: 4	Post Options Post Reply Quote PeLLe Report Post Thanks(0) Quote Reply Topic: Problem with N68-S UCC, CPU and RAM Posted: 24 Feb 2016 at 9:26pm
	Hi guys. Sorry for my bad english but i'm difficult in this language. I'm an italian guy. 8 years ago i assembled my desktop PC with this specification: - CPU: AMD Athlon x64 dual core 6000+ - MOTHERBOARD: Asus M2N4-SLI - RAM: 2x1GB DDR2 PC-6400 Kingstone (800MHz) - HDD: Maxtor 160GB + Maxtor 250 GB - GPU: Nvidia GeForce 8600GTS - SO: Windows XP Professional 32bit 4 years ago the motherboard and the GPU broke, so i bought a new motherboards and GPU. The last configuration of my PC is this: - CPU: AMD Athlon x64 dual core 6000+ - MOTHERBOARD: AsRock N68-S UCC - RAM: 2x1GB DDR2 PC-6400 Kingstone (800MHz) - HDD: Maxtor 160GB + Maxtor 250 GB - GPU: Zotac GeForce GT620 - Windows 7 Ultimate 64bit I use the programs that use a lot of ram, for example Adobe Lightroom, or Adobe Photoshop, etc. So i thought to increase the ram onboard and i bought 2x4GB DDR2 PC-6400 800MHz ram. I did these tests: 1) I put 2 sticks of ram into the DDR2 slots. I started the PC and windows has loaded correctly. After 10 minutes windows crashed. 2) I removed 1 stick of ram into. I started the PC and windows has loaded correctly. After 10 minutes windows crashed. In the two tests above the data bus frequency it was set automatically by the bios. The effective data bus frequency was 266MHz (533MHz). This value is below the maximum of possibilities of operation of the ram. 3) I change manually the data bus frequency into the bios. I set frequency to 400MHz (800MHz) with only 1 stick of ram applied. In this case the SO is not crashed for at least ten hours. 4) I applied the second stick of ram (the bus frequency is still set manually at 400MHz (800MHz)). In this case the PC starts successfully, but the SO is not loaded). After 4 reboot the situation has not changed. 5) I formatted the HDD and reinstall Windows 64 bit ultimate and the situation has not changed (the PC starts successfully, but the SO is not loaded). 6) I change the data bus frequency to automatically. The PC starts successfully and after 10 minutes windows crashed. 7) I change manually the data bus frequency to 333MHz (667 MHz). In this case the SO is not crashed for at least ten hours with 2 sticks of ram (tot: 8GB). The version of the bios is 1.50. Are there a problems to the latency times or other parameters? What do you think?

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 25073	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 24 Feb 2016 at 9:45pm
	The RAM is obviously not fully compatible with your motherboard. If you have gotten both modules to function correctly at DDR2 667 then I would just use them at that frequency. It is likely that the timings are not being set correctly for the lower and higher frequencies. If you really want to get it working at DDR2 800 then you can try manually setting the timings according to the RAM's specifications. In all honesty though you will not notice any real difference between DDR2 667 and DDR2 800.


parsec Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 04 May 2015 Location: USA Status: Offline Points: 4996	Post Options Post Reply Quote parsec Report Post Thanks(0) Quote Reply Posted: 25 Feb 2016 at 1:28am
	The maximum amount of memory your board and CPU can use is 8GB. Using 8GB of memory, as you are trying to do, is putting the maximum amount of stress on your system's memory controller. Did you try increasing the memory voltage with your new memory? That is the first thing I would do. If your BIOS has other options for voltages related to memory, increasing those might also help make your memory more stable. It is normal for any memory to run at a lower speed than its maximum with the default memory settings in the BIOS. That is done to allow the memory to work with as many systems as possible, including those that cannot run the memory at its fastest speed. We always will need to manually set the memory speed to its maximum value, by selecting the XMP profile for example, if the memory has one.


PeLLe Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 Feb 2016 Status: Offline Points: 4	Post Options Post Reply Quote PeLLe Report Post Thanks(0) Quote Reply Posted: 25 Feb 2016 at 4:46pm
	Thank for your answers. I remember that the voltage that supply the ram is automatically set in the BIOS. If i choose the manual setting, the voltage is between 1.794V and 2.212V. Can i try to increase the voltage above 1.8V (actual voltage from CPUZ)? It would be useful to update the BIOS or it is risky and harmful?