Thanks for your question.
I have looked in to this system and we are still out of stock of this part at the moment. I have contacted the US team to see when more stock will be available.
If you wanted to buy this memory from another supplier you can use the part number CT2KIT51264BF160B. That is the technical part number and is guaranteed to be compatible with your system. We only recommend that 8GB kit.
If you do have any other questions at all, please don't hesitate to ask and I would be more than happy to help.
Thanks for your message.
I have looked in to the ASRock 775Dual-VSTA system and we recommend that the maximum memory it can take is 2GB in total. That's 2x1GB modules.
You said that you currently have 3GB of memory installed. Sometimes you can go above the manufacturers recommendation but there is no guarantee that your system would work with 4GB installed.
I would be more than happy to recommend a single 2GB module for you. What I would need first would be some details about your existing 2GB module. This is so I can match it as much as possible when recommending memory.
On the existing memory module there will be a sticker that gives you details about the speed of the memory module. It will say something like "PC2-6400". Can you confirm what it says?
Once I have that information I can look at recommending memory that matches the speed of your existing memory. However, as we don't advise this system can support 4GB I cannot guarantee that it will work. All our memory does come with a lifetime warranty and also a 45 day return period.
If you do have any other questions at all, please don't hesitate to ask.
There are 4 possible upgrades for this PC:
The only difference I can detect is the choice among specs denominated as Cl-11, CL-13, 9-9-9-24, or 10-10-10-30.
Can anyone explain their significance. PC wil be used as stand alone single user client device.
Many thanks for advice.
I am very sorry for the issues that you have experienced with your upgrade. It does appear that you have gone through all the trouble shooting steps we would recommend to perform.
At this point I would recommend contacting us directly using the information in my signature. I am sorry for the inconvenience that this may cause.
Thank you for contacting us today. You should have no issues installing the 1.35v memory with the 1.5v Hynix memory. Our memory is dual voltage and will run at 1.5v if installed with other 1.5v memory. Please let us know if you have any other questions or concerns about this upgrade.