sixstring
join:2002-09-16
Pasadena, CA
 ·Comcast
| RAM timing question
I was running 2x1gb of pc6400 @ 1.9v in an overclocked system. I just picked up 2 more sticks and installed it and it ran fine until up about yesterday when it just crashed out from a game. The program just disappeared and dropped to desktop with no warning messages, twice. My system has always been stable so i figured the new ram must be the problem. I just upped the voltage a bit i'm hoping it would solve the problem, but i've yet to test it throughly.
2 questions:
i'm running the rams timing by SPD in the bios. The new pair of dual channel ram has different timing. Would that affect the stability? Should i manually set it to the slower timing?
how do i throughly test 4 gb of ram if windows can only see 3gbs? |
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gallowsroad
join:2004-08-09
Tulsa, OK
·Comcast
| The timings by SPD can be a problem, but shouldn't. Most board will adjust to the slower RAM timings for both pairs. If not, manually setting th timings can't hurt.
Did you check to make sure the default voltage for the RAM you are using is 1.9v? For both pairs? If it isn't, maybe turn it to auto, see if it helps?
Memtest86+ can test all your RAM. Run from a boot CD it loads prior to Windows, so the RAM limitations of the OS don't apply during testing.
--
Ha ha haaaaaaa....ever get the feeling you've been cheated?
- John Lydon, last Sex Pistols show |
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sixstring
join:2002-09-16
Pasadena, CA
·Comcast
| I tried Memtest86+ last night, for some reason it freezes the system before any tests are run. I'm thinking maybe it's trying to read my system specs but i have an over clocked system so it's not coming up correctly(?) I remember running Memtest86+ a long time ago with the same win98 boot disc on another computer, so i think an issue with the system and not the software/boot.
I'll revert everything to auto settings tonight and try Memtest86+ again. Thank you for your advice! |
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gallowsroad
join:2004-08-09
Tulsa, OK
·Comcast
| Memtest doesn't care if your system is over clocked at all. I used it recently as part of the stability tests on my upgraded CPU/mobo/RAM, and it didn't have any trouble with my over clock.
Can you post your mobo make/model and the same for your RAM? |
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HRM
God Bless America
Premium,MVM
join:2002-02-03
Darien, CT
clubs:  
 ·Vonage
moderated:
May 12th, @07:42PM
| reply to sixstring
Manually setting the lower values would be the standard way to go. Some OC setups just don't like certain memory banks used, so it might happen even with identical sticks.
You can remove the new ones to confirm it, but if you are running the timing faster than the ratings of one set of RAM, they just might be the weak link.
I have had to lower the FSB on a system when I changed the NIC card. Swapping it back let me raise it again. When pushing the system, any part may be the weak link, but new RAM is the most likely in this case. |
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sixstring
join:2002-09-16
Pasadena, CA | reply to sixstring
After looking around on some boards I think i found the problem. My new sticks (OCZ 2P800FR2GK) requires 2.0v to run without hickups. I bumped the voltage up to 2.0v, it seems stable after 3 hours of gaming. |
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