Help me please. Thanks before.

[Jeff008]

Recently, I just bought a new patriot memory 2GB DDR2 PC6400 800Mhz "PSD22G80026H". When I installed the new ram, it gave me beep sounds and it's due to an error detecting the new ram. But I solved this and it's running.

After that I noticed that this ram is performing much slower than my old ram (I didn't use it again), which is another brand name with the same "2GB DDR2 PC6400 800Mhz". Example is when switching on my system, it takes longer to show the 1st screen which is usually the graphic card spec.

Furthermore, the POST code on my mobo keeps changing with this new patriot ram installed. Range of POST code changes around 41-48. With my old ram, the mobo will definitely show fixed POST code "FF".

My Mobo is: http://www.jetway.com.tw/jw/motherbo...ame=PA78GT3-DG

I know it's an old board and not well known and I'm not changing my mobo for the time being. I'm just interested in what problems I'm facing.

My questions are:
1. Is my mobo not compatible with the new ram? [updated to the latest bios]
2. What's a good timing for me with this new ram? Mine is 6-6-9-18 now.

Thanks alot.
Jeff

[Patriot_Ben]

Hello,

To answer your questions:

1- The PSD22G80026H should be compatible with your Jetway system.
2 - It depends on what the latencies' rating your other ram is. A good rule of thumb is to use the latencies of the more relaxed timings.

Ie; if one is rated 5-5-5 and one is 6-6-6 use 6-6-6.

On that note, generally it is not advise to mix and match memory of different programming.

Here is Jetway's post code list:
http://download.jetway.com.tw/downlo...-PORT-LIST.pdf

To rule out bad memory, can you try testing with memtest with only PSD22G80026H in the system?

Memtest can be found here: http://www.memtest.org/
3-4 Loops should be fine. Please let me know if you find any errors.

[Jeff008]

I've Tested my ram with memtest86+ for 16 loops and found no errors. I'm still new to this OC thingy and how do I change the timings? Via Bios or AOD?
Here are some pictures of my computer screen. I only 1 piece of ram and it's 2gb x 1, not 1gb x 2.

http://www.webng.com/lithium007/capture01.jpg
http://www.webng.com/lithium007/capture02.jpg
http://www.webng.com/lithium007/capture03.jpg
http://www.webng.com/lithium007/capture09.jpg

[Patriot_Ben]

Hello,

So other than the occasional slow-downs are you experiencing any instability with the system? Any Blue Screens?

What post code do you normally get with the PSD22G80026H?

Can you check with CPU-Z under the spd tab to see what the programming says?

CPU-Z can be found here:
http://www.cpuid.com/softwares/cpu-z.html

As far as changing the BIOS settings, I would recommend doing it directly with the BIOS.

Look for Frequency settings. Set this to 400MHz or DDR-800 (dual data rate).

[Jeff008]

Hello again,
So far I didn't experience any instability or bsod. The post code ranges from 40-49 around that and it keeps changing. Sometimes it's 46 and the next minute it will change to 47. For now it's 40 or 41.
The current timing now using CPU-Z under SPD tab are:

Slot#1: DDR2 Correction: None
Module Size : 2048 MBytes
Manufacturer : Patriot Memory
Part Number : PSD22G80026

Timing Table
JEDEC#! JEDEC#2 JEDEC#3
__________________________________________________ _____________
Frequency : | 266MHz | 333MHz | 400 MHz |
CAS# Latency | 4.0 | 5.0 | 6.0 |
RAS# to CAS# Latency : | 4 | 5 | 6 |
RAS# Precharge : | 4 | 5 | 6 |
tRAS : | 12 | 15 | 18 |
tRC : | 16 | 20 | 24 |
Voltage : | 1.80 | 1.80 | 1.80 |

[Patriot_Ben]

Hello,

The timings check out. It doesn't seem to be a memory issue. To be honest, it doesn't sound like any major issues if the system is stable.

Try clearing the CMOS to see if that helps. To do so, make sure the computer is off. Unplug the 20/24 pin atx cable, turn off the power suppy and remove the onboard battery. Leave the battery and cable unplugged for about 10-15 minutes.

[Jeff008]

I've removed battery and unplugged the atx cable for 15 minutes, but it doesn't help. Well I guess it's like you said, it's not a major issue as long as my system is stable. Anyway, I managed to change the timing to 5-5-5-15 and I've done overclocking my cpu from 2,7ghz to 3,ghz (200HT ref.clock x 15 multiplier). As for the memory timings, which should I use? 5-5-5-15 or 6-6-6-18? Thanks before for your help.

[Patriot_Ben]

Hello,

I would go with whatever is stable since you're open to overclocking it. If 5-5-5-15 works I would use that.

The memory is rated for CL6, but you might be able to push it a bit.