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RAM memory problem (CAS latency)
After researching the subject for 3 hours, here's my question:
I had a Pentium III 550 Mhz computer for the last 4 years, running Windows 98. Last week I installed XP on it. The old 64 MB RAM was barely keeping up. So I bought 128 MB RAM. Both memory sticks are working, so I have 192 MB RAM, and the performance is much better. But I get a new message on boot-up: Suggested SDRAM CAS Latency Time "3" The Usenet is filled with suggestions to go to the BIOS and change the "CAS Latency" to the suggested value. I haven't quite found that on my BIOS. Here's what it shows on the setup of my Soyo SY-6VCA: ......................... [from Advanced Chipset Features submenu] Bank 0/1 DRAM Timing: sdram 10ns (selected) ; sdram 8ns ; normal ; medium ; fast ; turbo Bank 2/3 DRAM Timing: sdram 10ns (selected) ; sdram 8ns ; normal ; medium ; fast ; turbo Bank 4/5 DRAM Timing: sdram 10ns (selected) ; sdram 8ns ; normal ; medium ; fast ; turbo SDRAM Cycle Length: 2 (selected) ; 3 DRAM clock: Host CLK [100 Mhz] (selected) ; 67 Mhz ; 133 Mhz [from Advanced BIOS Features submenu] OS select for DRAM 64 MB: Non-OS2 (selected) ; OS2 ......................... These are the items in the BIOS that I believe are closest to the memory latency issue. Incidentally, the last one really intrigues me: should I change it to enabled now that my memory is more than 64 MB? This last question is a side-topic. |
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In the BIOS go to the Advanced Chipset Features page and set your SDRAM
Cycle Length to 3. This is the CAS latency. I would recommend leaving the bank timing settings at normal. Also WinXP requirments list only 128mb of memory as the minumum and 256mb as recommended but it will really come alive with 512mb. I would recommend buying two sticks of 256mb for your board. |
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wrote: In the BIOS go to the Advanced Chipset Features page and set your SDRAM Cycle Length to 3. This is the CAS latency. I would recommend leaving the bank timing settings at normal. Also WinXP requirments list only 128mb of memory as the minumum and 256mb as recommended but it will really come alive with 512mb. I would recommend buying two sticks of 256mb for your board. Thanks. I changed it and it no longer makes CAS latency suggestions. Could you explain why I should change bank timing to normal (it's currently at SDRAM 10ns)? |
#5
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On Soyo motherboards the use of Turbo mode usually disables the USB
ports for one thing. You can try the medium and fast settings. If no problems accure then its safe to use. |
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#7
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I upgraded my ram, and I think I got the wrong kind. Here's my mother
board, and here's the ram I got: MOBO: Biostar P4SXQ RAM: PC3200 DDR CAS 3 2.5 volts After putting the ram in (which was months ago) I noticed a severe drop in performance. I just noticed today that the MOBO settings for the CAS are auto, 2, and 2.5 Do I need to get different ram? If so, what would work better: CAS 2 or 2.5? Thanks! |
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