Geil Ultra-X 2-2-2-5-1T & Prime 95

xpatar

New member
A few days ago I bought a pair of Geil Ultra-X 2-2-2-5-1T (2x512MB in DC).

I installed them and the system boot without any problems.

Selecting optimized defaults in system bios, the memories recognized as 2-2-2-5-2T,

and read preamble value as 6ns instead of the 5 that the IC's support. At this point I want to say that in the beginning I didn't know what was the type of the IC's. Where they TCCD or BH-5;

So I set CL at 3 in system bios and the system couldn't boot, so I suppose I'm having

the Windbond BH-5 IC's.

After that I entered system bios and made some modifications:

I set manually command rate at 1T and read preamble value at 5ns.

I reboot and everything went fine.

After a time period at boot time I saw a message I should disable the overclocking features for system stability. Quite weird as the rams work at their

specifications 2-2-2-5-1T, 2.7v, read preable value at 5ns.

So I loaded again optimized defaults in system bios and ran a blend test in

prime 95.

After 1 hour and 14 minutes I saw the following message in prime 95:

"FATAL ERROR: Rounding was 0.49609375, expected less than 0.4

Hardware failure detected, consult stress.txt file".

Then I ran memtest86 v3.2 for 7 hours and 30 minutes without reporting any memory errors.

I did also some separate tests with test 5, test 6, and test 7 each of them for over

an hour, and again no errors were reported.

These tests are supposed to be very stressful.

Strange because memtest didn't report any errors instead of prime 95.

Could it be a compatibility issue between M/B and rams?

Till now I didn't have any issues in any applications, even at hard gaming where everything is at full load, video processing etc.

No crashes no problems at all.

So to sum up:

Is it a problem between the M/B and memories? I mean can this M/B drive these rams correctly?

Should I go for a DFI LanParty?

Could it be a bug of the prime 95? I ran it again for a second time and I got the above message again after 3 and a half hours.

Cpu is not overheated in any way.

What appication should I trust?

Memtest or prime 95?

I repeat that I don't have any problems with my rig.

I would appreciate any help.
 
Personally i dont trust prime95 at all.

Ever since i moved to an AMD rig, i've had dodgy results from Prime.

On my current overclock i can do a 32m SuperPI, play CSS all day or rip several dvd's without any problems. Prime however falls over straight away.

You could try another program for stress testing, like S&M or SuperPI and see how it goes.
 
Thanks for the help.

Well, in the meantime I did some super pi testing

and all the calculations didn't report any errors.

Also I noticed that in 16K and 32K the results are not presented together.

Is this normal? Both calculations are done in 0 seconds.

Only one of them is presented at a time.
 

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xpatar said:
Thanks for the help.

Well, in the meantime I did some super pi testing

and all the calculations didn't report any errors.

Also I noticed that in 16K and 32K the results are not presented together.

Is this normal? Both calculations are done in 0 seconds.

Only one of them is presented at a time.

Sorry mate, but the attached image is far to small for me to see anything.

Can u post a bigger one. Taa :)
 
Well, sorry for that image I hope this one is a more detailed one.
 

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name='xpatar' said:
Well, sorry for that image I hope this one is a more detailed one.

You need to download the modified SuperPi which shows up to 3 decimal places for the most accurate results. Google "SuperPi Mod" and it should lead you to it :) Actually I think its available for download at www.ocdownloads.net as well.
 
I did an S&M test and here are the results:

"S&M(r) 1.7.6 (beta)

Start: 12.02.2006 (Sunday) 2:08

Stop: 12.02.2006 (Sunday) 2:55

Processor: Result:

Cache L1 passed

Cache L2 passed

Integer passed

FPU passed

Power Supply passed

System Memory failed

Categorization by type:

| single errors 1

| steady failure 0

| failure of block 0

Categorization by data:

| single bite 1

| multiple bits 0"

I see a memory problem, bad luck!

I'll try the super pi mod version like FragTek posted and I'll let you know as soon as I have the results.
 
Well, I'm a little bit confused because after super pi mod 1.4 testing all

the calculations were successfully completed.

I really don't know which one application to trust,

memtest86v3.2 and super pi mod 1.4 report no errors,

while others like prime 95 and S&M do report errors.
 

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I would go with S&M and say that maybe there is a problem with the config of your memory.

However, S&M performs VERY intesive tests, and puts your components under more stress than any other program ever will.

Personally, i only run a 32m SuperPI test and play a game for a few hours to test stability :)
 
As you have seen I completed all the tests of super pi successfully,

I also play games without any problem at all.

So should we take seriously programs that report errors while others don't?

Could it be a bug of the application?

Maybe as you said could it be a config problem of the memory,

that is why I asked in my first post if it could be a compatibility problem

with the M/B.

When I set optimized defaults in system bios the modules are recognized as:

2-2-2-5-2T, read preamble value 6ns, voltage default.

The modules can support command rate at 1T, preamble value at 5ns and voltage 2.65-2.85.

I know that these IC'S are pretty good in voltage.

I read that some people managed to run them at 4v while my M/B can give a

max voltage at 2.85v which are quite within the specification limits of the vendor.
 
I think we have the first good news....

S&M completed the memory tests successfully!!!

As you stated I made some modifications in system bios:

Timings are 2-2-2-5-1T, read preamble value at 5ns and vdim at 2.85v,

max the M/B can give.

I have to notice that I did only memory testing as in the previous tests I didn't

have reports about cpu and psu problems.

I'll continue with super pi testing and I hope to have only good news.
 
After hours of testing I managed to run these rams properly without any errors

with the following settings in system bios:

2-2-2-5-1T, vdim at 2.8v and preamble value at 5ns.

It seems that these rams love voltage.

I completed successfully all the tests of S&M (cpu, psu, memory) without any errors.

The same succlessful results I also had with super pi mod 1.4.

The only thing that made me wonder was at the psu testing of the S&M were a

pop up window with vga heating presented a skull with crossbones flipping around.

I checked it with the vga and the temps never went up over 43 Celsius Degrees.

Is this a normal part of the program? Or should I worry about something?
 
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