Correct (or Max.) Voltage for Corsair ValueSelect PC3200?

stockhausen

stockhausen

stockhausen

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What is the maximum voltage level for Corsair ValueSelect PC3200 1Gb RAM?

I have two sticks in my motherboard and the voltage is currently set at 1.65V. Looking about, I get the impression that this is a bit low. I am NOT overclocking but my system is (randomly) unstable with BSODs and random reboots.

Also . . . what would be the correct voltage for 2 x 512Mb Geil PC3200 sticks?

Thanks for any info.
 
stockhausen said:
What is the maximum voltage level for Corsair ValueSelect PC3200 1Gb RAM?

I have two sticks in my motherboard and the voltage is currently set at 1.65V.
Click to expand...
Do you mean you have DDR PC3200?

Your voltage should be a minimum of 2.5v and safe up to 2.8v.

What MOBO do you have?
 
Yellowbeard said:
Do you mean you have DDR PC3200?
Click to expand...
Yes, 2 x Corsair VS1GB400C3 @ 200MHz

Yellowbeard said:
What MOBO do you have?
Click to expand...
MSI K7N2 Delta-ILSR (MS-6570) + AMD Athlon 3200+ (Barton)

I have now worked out that this board allows me to apply 2.5, 2.6 or 2.7V - I am currently running at 2.7V. I screwed up over the voltage - I was looking at the CPU Core Voltage figure :eek:
 
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Yellowbeard said:
Are you still unstable at 2.7v?
Click to expand...
The system has now been up & running for a little over 4 hours - which on recent experience is pretty darned impressive!

However, I have dropped the CPU FSB speed from 200MHz to 167MHz (according to CPU-Z) - the RAM is running at 5:6 i.e. 200MHz.

When I tried to run "ORTHOS" (v0.41.110.18) with the default "Blend - stress CPU and RAM" test, it halts after less than 30 seconds:
1:FATAL ERROR: Rounding was 0.5, expected less than 0.4
1:Hardware failure detected, consult stress.txt file.
1:Torture Test ran 0 minutes 25 seconds - 1 errors, 0 warnings.
1:Execution halted.

1:FATAL ERROR: Rounding was 0.4997816086, expected less than 0.4
1:Hardware failure detected, consult stress.txt file.
1:Torture Test ran 0 minutes 28 seconds - 1 errors, 0 warnings.
1:Execution halted.
Click to expand...
I ran the "Small FFTs - stress CPU" test, it kept going for just over 20 mins. before crashing - I assume that this stresses the CPU but not the RAM.
1:FATAL ERROR: Rounding was 0.4959945679, expected less than 0.4
1:Hardware failure detected, consult stress.txt file.
1:Torture Test ran 20 minutes 15 seconds - 1 errors, 0 warnings.
1:Execution halted.
Click to expand...

Last night, I ran MEMTEST86+ v1.70 for over seven hours - 2 errors reported, at 2026.9Mb & 2040Mb.


Incidentally, thanks for monitoring this forum (on behalf of Corsair), it is really impressive that you do.
 
Yellowbeard said:
Glad to be here, this is a nice forum.

Do you have the latest bios installed?

Try the Memtest again on each stick individually.
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Yup, latest BIOS - it is a fairly old motherboard.

I have now been running the "StressCPU" test on ORTHOS for 3½ hours without problem - I will leave that running overnight and see if it keeps going before experimenting with single sticks of RAM and MemTest86 tomorrow.

It does seem as if the problem relates to the memory. However, I don't think that it is this particular memory since I was previously using 2 x 512Mb Geil sticks and had all the same sort of problems with that.

I don't quite understand why reducing the CPU FSB from 200MHz to 166MHz should have made the system more stable since I have left the RAM running at 200MHz in DDR mode :confused:


ps - sorry for the delay in replying, I have just finished watching AC Milan beat Liverpool - very sad :(
 
Well, last night I left the system running the "StressCPU" test on ORTHOS; all appeared to be going well until I got up this morning to be greeted by the usual BSOD.

Having decided that I couldn't afford to spend any more time working on this problem, I removed the motherboard, graphics card, etc. and put them into a different chassis. I restored the 2 x 512Mb Geil RAM sticks (at 2.7v), set the FSB back to 200MHz and booted up. The system has now been running the "StressCPU" test for about 1½ hours. I have decided to stop it and try the "Blend - stress CPU and RAM" test for a while.

The only obvious thing that has changed is that I am now using a different PSU - same make and model but a different unit. Maybe my original PSU is flaky?
 
Yellowbeard said:
That's very possible. Have you tried the 1gb DIMMs with the "better" PSU?
Click to expand...
No. I will do though - when this configuration has run for a while longer.

. . . later . . .

"Blend - stress CPU and RAM" tests have now been running for over 10 hours without problem. I will leave it overnight and see how it looks in the morning.

Wretched PSU :mad:

. . . and later still . . .

"Blend - stress CPU and RAM" tests have now been running for over 20 hours without problem. Having left it running overnight, it is still going on a test where it would previously not keep going for an entire minute.

Two lessons really:
1. Don't overlook PSU instability and ageing as a source of obscure problems - try swapping the PSU
2. ORTHOS is a useful tool for stress testing

Yellowbeard - I will try the 2 x 1Gb Corsair ValueSelect PC3200 RAM sticks tonight - need to get on with some work today.
 
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