[Asus+Dothan]Dead BH5 - Here is the TUT to fix it!

[smolk]

Hi guys I've got a problem which may be solved by this SPD-programming.

I've got a P4GPL-X, and my board revision is that one who can't change vcore Unfortunately it can't change divider either! Or, well, it can, but not much. Here is a simple chart with results.

FSB (in BIOS)| DRAM Freq (in BIOS)| Divider for real
166 Auto 1:1
180 Auto 1:1
180 360 5:4
199 Auto 1:1
199 398 5:4
200 Auto 5:4
200 400 5:4
211 Auto 5:4
211 422 5:4

As you can see, the only way to make it 1:1 is to have a FSB below 200 and use the Auto Setting. Worth saying is that if I have 199 and 1:1 I can raise the FSB above with the mem still in 1:1 using Clockgen or SetFSB.

One thing that I found strange is that my SPD looks like this:


So it should be 5:4 with 166+, or at least it should be 1:1 'til 207,5 (166*5/4), but now it is 1:1 until 199 and then 5:4. A bot strange. The mem is Old Buffalo old BH-5 (I can take a pic of the chips if necessary). I believe that it is some old value-memory from the time when BH-5:s were on quite a lot of mem sticks.

But, if I reprogram the SPD with Thaiphoon so that it says that it has like 250MHz as the highest Frequency instead of 166, could it then be possible to run 1:1 over 200 with Auto? It seems that it could be problems, according to the problems I just described.

And, does it matter if it is old or new BH-5:s? Maybe I'll try Mushkin Redline XP4000, will it work? Will it work if it isn't BH-5 but other Winbond-chips like CH-5 or BH-6 or UTT?