Jetway V266B Board / DDR Memory Problem

[XTab]

I wonder if anyone can help me with a Jetway Mobo / DDR Memory problem I'm having?

I have 256 MB of DDR RAM on my Jetway V266B board and bought another 256 of the same type/make (TA) to upgrade my spec for dotNet programming. The processor is an Athlon XP1700.

The system finds the full 512MB OK, boots into Win2K OK, but once I start running a few apps, I get software crashes all over the shop.

Each of the 256's will work quite happily on its own in either bank. It's when I try both together that there are problems.

I got the vendor to send me a replacement for the new memory as I thought faulty RAM was the problem initially. But that didn't fix it, so I'm fairly sure it's not that.

I've tried to download the manual for this motherboard from Jetway's site, but it's been down a lot so I haven't been able to do that yet. (There wouldn't be a jumper involved in this, would there? Nah, surely not!)

Here's some of the BIOS settings> I'm not enough of a techie to know which might be directly related, so any pushes in the right direction would be much appreciated:-

--------------------------------
DRAM Timing Settings
Auto Config Optimized
RAS Active Time 6T
PAS Precharge Time 3T
RAS to CAS Delay 3T
CAS Latency 2.5T
Bank Interleave 4 Bank
DRAM Command Rate 2T Command

Memory Hole Disabled

Auto Detect DIMM/PCIClk Enabled
Spread Spectrum Disabled
Host Clock 133 MHz
DRAM Clock 133 MHz
---------------------------------------

I see that there are some fans of the Jetway 266 in these forums, so I'm hoping that my problem may be familiar to at least one of you.

Grateful for any help .

 

[dcwtechmech]

Hard to start without manual for ram settings and banks spec's.. Let everything that have breath praise the Lord.

 

[XTab]

dcwtechmech said: "Hard to start without manual "

Sure is! However in the meantime I've managed to get hold of a copy with some outside assistance (Jetway's own site points to the wrong link, which didn't help much.) It's a clear, well laid out manual which is handy.

All those settings quoted in my post are in fact the slowest available in the BIOS, so on advice from elsewhere I've disabled the Bank Interleave completely . It works now.

From various research around the net, my gut feeling is that the memory isn't up to the job for keeping pace with the Athlon. I wouldn't go so far as to say it was cheap - but maybe I just didn't get what I didn't pay for

 

[paparazi]

XTab,
TA is one of the commonist generic memory types, and not very good quality but should work just fine all the same.
We use this combination in our systems without problems (Jetway V266b with TA DDR memory) all I can say is it is still likely to be faulty.
For my owm machine I would buy something like Samsung or Winbound.
What core is your XP1700? if it is the smaller thoroughbred core you should have either a copper based or all copper heatsink cooler. (Thoroughbred and Barton have a 40% smaller contact area so require a heatsink contact which has a higher thermal heat coefficient than alluminium) AS PER OFFICIAL AMD RECOMMENDATION. Don't forget paste.
The V266b has a 100/133 memory jumper above the AGP slot that is normally removed to sellect 133 (looks like you have done it in the bios and thats fine also)
Martin
Replying helps further our knowledge, without comment leaves us wondering.