No_Fear Posted October 15, 2007 Author Share Posted October 15, 2007 recently my pc made some restarts i did some tests with mem86+ and got the following error test 8 ,pass 7, failing address 00011a68b1c - 282.5mb ,good ffffffff ,bad f7ffffff,err-bits 08000000 the settings of the ram are : 3-4-4-8 2.6v 2t the part number i get from the cpu-z utility for each of the rams is : CMX1024-4000 are correct the setting i did for those ram ? regards Link to comment Share on other sites More sharing options...
No_Fear Posted October 15, 2007 Share Posted October 15, 2007 recently my pc made some restarts i did some tests with mem86+ and got the following error test 8 ,pass 7, failing address 00011a68b1c - 282.5mb ,good ffffffff ,bad f7ffffff,err-bits 08000000 the settings of the ram are : 3-4-4-8 2.6v 2t the part number i get from the cpu-z utility for each of the rams is : CMX1024-4000 are correct the setting i did for those ram ? regards Link to comment Share on other sites More sharing options...
No_Fear Posted October 15, 2007 Author Share Posted October 15, 2007 forgot to mention when i did the test i run the ram at 200mhz not 250mhz. Link to comment Share on other sites More sharing options...
No_Fear Posted October 15, 2007 Author Share Posted October 15, 2007 forgot to mention when i did the test i run the ram at 200mhz not 250mhz. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 15, 2007 Corsair Employees Share Posted October 15, 2007 I would recommend testing the modules one at a time at 2.8 volts. If both modules fail there may be another issue, however if one passes and the other fails, we will want to get them replaced for you. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 15, 2007 Corsair Employees Share Posted October 15, 2007 I would recommend testing the modules one at a time at 2.8 volts. If both modules fail there may be another issue, however if one passes and the other fails, we will want to get them replaced for you. Link to comment Share on other sites More sharing options...
No_Fear Posted October 15, 2007 Author Share Posted October 15, 2007 ok i am running the test now with 2.8v here a screen shot of my bios setting in case i did something wrong http://xs220.xs.to/xs220/07421/PA152714.jpg.xs.jpg Link to comment Share on other sites More sharing options...
No_Fear Posted October 15, 2007 Author Share Posted October 15, 2007 ok i am running the test now with 2.8v here a screen shot of my bios setting in case i did something wrong http://xs220.xs.to/xs220/07421/PA152714.jpg.xs.jpg Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 15, 2007 Corsair Employees Share Posted October 15, 2007 Leave all settings at default/auto except the CAS-tRCD-tRP-tRAS-CMD rate, which all look good, let me know how the memtest checks out! Link to comment Share on other sites More sharing options...
No_Fear Posted October 16, 2007 Author Share Posted October 16, 2007 tRAS is the Min. RAS# Active Time? Link to comment Share on other sites More sharing options...
DerekT Posted October 16, 2007 Share Posted October 16, 2007 The science behind this is quite complicated, but for most people the fastest setting is to set the tRAS to your CAS + tRCD +2. For example, if your timings were 4-4-4, the optimal tRAS would be 4 + 4 + 2 = 10. Consider tRAS as the pulse width of the strobe. Research: What is tRAS and why is it backwards and important at the same time? The word latencies is generally used to describe a delay. However, Merriam-Webster defines the word’s origin as period of dormancy and in technical parlance, latency is often used to describe simply the duration of any event. One example is the PCI latency which describes the time any device has access to the PCI bus before it will be automatically disconnected to allow other devices access to the same resources. Why are we talking about this? Very simple, the access latencies of any device to the PCI bus are usually eight cycles, but the total latency can be set from 16-256 cycles. This shows that the same word is used to describe two entirely different parameters, the first being the time until any transactions can start, the second referring to the time that is available for transactions (minus the access latencies). As an example, a PCI latency of 32 will carry a penalty (access latency) of 8 cycles which leaves 24 cycles for actual data transfers. Therefore, decreasing this latency will not increase performance, on the contrary. The exact same is true for tRAS short for the RAS Pulse width. Historically, tRAS was defined as the time needed to establish the necessary potential between a bitline pair within the memory array until it was safe to write back the data to the memory cells of origin after a (destructive) read. Pay attention to the word read here. Memory, in many ways is like a book, you can only read after opening a book to a certain page and paragraph within that particular page. The RAS Pulse Width is the time until a page can be closed again. Therefore, just by definition, the minimum tRAS must be the RAS-to-CAS delay plus the read latency (CAS delay). That is fine for FPM and EDO memory with their single word data transfers. With SDRAM, memory controllers started to output a chain of four consecutive quadwords on every access. With DDR, that number has increased to eight quadwords that effectively are two consecutive bursts of four. Now imagine someone closes the book you are reading from in the middle of a sentence. Right in your face! And does it over and again. This is what happens if tRAS is set too short. So here is the really simple calculation: The second burst of four has at least to be initiated and prefetched into the output buffers (like you get a glimpse at the headline in a book) before you can close the page without losing all information. That means that the minimum tRAS would be tRCD+CAS latency + 2 cycles (to output the first burst of four and make way for the second burst in the output buffers). Any tRAS setting lower tRCD + CAS + 2 cycles will allow the memory controller to close the page “in your face!” over and again and that will cause a performance hit because of a truncated transfer that needs to be repeated. Along with those hassles comes the self-explanatory risk for data corruption. That one is not a real problem as long as the system is kept running but in case it is shut down and the memory content is written back to the hard disk drive, the consequences can be catastrophic. For the drive, that is. Link to comment Share on other sites More sharing options...
No_Fear Posted October 16, 2007 Author Share Posted October 16, 2007 i wanst clear my question about tras is about the picture i posted above (the bios screen) which option of them is the tras. Link to comment Share on other sites More sharing options...
No_Fear Posted October 16, 2007 Author Share Posted October 16, 2007 i test the modules one at a time(with the mem settings i posted above, not auto as you said to me) the first one was ok without error,but the second got : http://xs220.xs.to/xs220/07422/memtest.jpg.xs.jpg Link to comment Share on other sites More sharing options...
DerekT Posted October 16, 2007 Share Posted October 16, 2007 i wanst clear my question about tras is about the picture i posted above (the bios screen) which option of them is the tras. tRAS would be the Active to Precharge Delay. In your system that is "Min. RAS# Active Time". Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 16, 2007 Corsair Employees Share Posted October 16, 2007 i test the modules one at a time(with the mem settings i posted above, not auto as you said to me) the first one was ok without error,but the second got : http://xs220.xs.to/xs220/07422/memtest.jpg.xs.jpg Let's get them or it replaced. Please follow the link in my signature “I think I have a bad part! Or “Tech Support Express” and we will be happy to replace them or it, please note that you are posting from the forum! Link to comment Share on other sites More sharing options...
No_Fear Posted October 16, 2007 Author Share Posted October 16, 2007 ok just did it,thank you. Link to comment Share on other sites More sharing options...
No_Fear Posted October 16, 2007 Author Share Posted October 16, 2007 tRAS would be the Active to Precharge Delay. In your system that is "Min. RAS# Active Time". ok got it know,thank you Link to comment Share on other sites More sharing options...
No_Fear Posted October 30, 2007 Author Share Posted October 30, 2007 usually how long take the RMA to completed ? online rma status : Thank you for choosing Corsair products! The following is the status of your RMA Number 1031288. RMA Issued On: 10/18/2007 Defective Parts Received on: 10/24/2007 * NOTE: it may take up to 24 hours for this date to be updated after arrival at Corsair Part Number Received: CMX1024-4000PT Quantity Received: 2 RMA Replacement Parts Ship Date: N/A Replacement Part Number: N/A Replacement Part Quantity: N/A Replacement Shipping Method: N/A Replacement Shipping Tracking Number: N/A Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 30, 2007 Corsair Employees Share Posted October 30, 2007 usually how long take the RMA to completed ? Give our customer service a call at 888-222-4346 or 510-657-8747 Ext “0” or send them an email (rmaservice@corsairmemory.com) with your RMA# and ask them for the status! Link to comment Share on other sites More sharing options...
No_Fear Posted October 30, 2007 Author Share Posted October 30, 2007 ok thank you. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 30, 2007 Corsair Employees Share Posted October 30, 2007 NP! Let us know if you have any more questions! Link to comment Share on other sites More sharing options...
No_Fear Posted November 2, 2007 Author Share Posted November 2, 2007 got the ram today ,thanks for the fast service i got back TWINX2048-3200C2PT G,i set them 2-3-3-6 2.8v, shall i put the timing 1t or 2t? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 2, 2007 Corsair Employees Share Posted November 2, 2007 You can try it and see but I would test the system with http://www.memtest.org to make sure its stable. Command Rate is not really a memory setting and would be dependent on the make and model of MB and PSU and the specific CPU you have installed. You might look this setting up on Techarp and get a better explanation. Link to comment Share on other sites More sharing options...
No_Fear Posted November 2, 2007 Author Share Posted November 2, 2007 i am runing it now ,for around an hour did not gave any problems .i'll leave it till tomorow ,thank you. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 2, 2007 Corsair Employees Share Posted November 2, 2007 NP! Let us know how you make out! Link to comment Share on other sites More sharing options...
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