1066Mhz RDRAM & Asus P4T533-C

[Rucsac]

Hi guys, well my months of waiting is finally over!

I nearly have all of my new components ready to build my new P4 machine, all I am waiting for is the H-Drive and my 1066Mhz RDRAM (2x 256Mb Kingston)

I have a few questions, nothing hard, but need some input please....

1. RDRAM Freq Ratio (Auto)

* I am going to be running a 533Mhz 2.4 Northwood at STD settings, or maybe +133Mhz to 2.5Ghz. What do the different settings give in RDRAM Mhz? (3:4, 3:5, 4:5) -I'd like to run the RDRAM @ 1200Mhz if poss, or a little lower if that means 100% stability...
**Can this be left on Auto to get system and OS installed before O/C'ing?
***Do I remember correctly that some members had issues leaving CPU on auto? So it's best to set CPU to relevant multiplier? (Or is it the Ram that needs to be set to 1:1?

(After running my overclocked AMD for nearly 2 years I want a system that will never over heat and lock-up, hence my Volcano+7 Copper fan)

2. This may seem really dumb, but I have ordered "Intel850 compliant" 1066Mhz RDRAM, the brand supplied will be Kingston, seeing as the P4T533-C is Intel 850.

*The Asus M_board book states it must be 16Bit? - Is this true?
**Also, the book states that C-Rimm modules should be used, but I though the new RDRAM could me installed in any configuration!? - For example 3x256Mb Rimms if so required? Or even 1x512mb! ?

Sorry to ask the question about the RDRAM Freq, as I know someone has mentioned something about this before....... why didn't Asus simply put a table in the manual!


All the best guys

Wain

System will be, when HD & RDRAM Arrives.

Windows 2k Pro, P4 -2.4b (533), 512MB 1066Mhz RDRAM, 80ata 100 7200 8mb W-Dig SE Caviar, Pioneer Region Free 106, Plextor 40/12/40, Mitsubishi 19" Trini, Ati9700Pro (Gigabyte), SB 5.1 Live + 5300 Inspire spkrs, 450w PSU. Volcano+7 and Arctic III.

 

[Rucsac]

oh dear, no news is bad news!

 

[CloudsShinji]

Well, even though I don't have this board I will try and answer a few of your questions.

* I am going to be running a 533Mhz 2.4 Northwood at STD settings, or maybe +133Mhz to 2.5Ghz. What do the different settings give in RDRAM Mhz? (3:4, 3:5, 4:5) -I'd like to run the RDRAM @ 1200Mhz if poss, or a little lower if that means 100% stability...

AFAIK, to run at PC1200 speeds, you will have to use a FSB speed of 150 MHz. I don't think this board (or any RAMBUS mobo) has memory multipliers like you would expect to find with a DDR system. Basically it will give you the option to pick PC800, PC1066, or Auto for memory speed. (or PC600, PC800, Auto for FSB 100).

Although looking at it, I guess PC800 is the equivalent of a 3:4 memory ratio (133*3/4*4*2) and PC1066 is the equivalent of a 1:1 ratio (133*1*4*2), but there are no ratios that INCREASE your memory speed above your FSB (3:5, 4:5 ratios, etc.), or not on this board at least. It's like that on my motherboard (GA-8IHXP) and when I was shopping around I seem to recall that this board was no different. So to get a higher memory speed, you'd have to use, for instance, 150 FSB * 4 * 2 = 1200MHz.

**Can this be left on Auto to get system and OS installed before O/C'ing?

You should be able to. If you have problems then you could use PC800 setting for max stability.

***Do I remember correctly that some members had issues leaving CPU on auto? So it's best to set CPU to relevant multiplier? (Or is it the Ram that needs to be set to 1:1?

Sadly, I'm not really sure what you mean. You won't be able to change your multiplier, but you would probably be best to start off with the FSB set at 133 and go from there. Again, if stability is an issue (and I can't imagine that it would be at these settings) then you could bump the FSB down and figure things out.

*The Asus M_board book states it must be 16Bit? - Is this true?

Yes, this is true. 32-bit RDRAM only works with the P4T533.

Also, the book states that C-Rimm modules should be used, but I though the new RDRAM could me installed in any configuration!? - For example 3x256Mb Rimms if so required? Or even 1x512mb!

Unfortunately, you must install 16-bit RDRAM modules in pairs, and use CRIMMs to fill any empty RIMM slots. Only 32-bit RDRAM is capable of being installed in single module arrangements. You should have received a pair of CRIMMs with your mobo, though.



Anyways, well, I don't know if that answers your questions but I hope I was able to shed some light on the issue.

 

[deleterious]

I have the asus p4t-533 (the one with two 232pin rdram slots) and im running on 2x samsung 256meg chips, and i get weird errors. This board has given me some funky lock ups.

 

[maxicat]

HI
Re the p4t 533 board, looks like this board is famous for locking up, i mailed asus about this and they replied saying; make sure the rimm 4200's are the exact number and make as in the owners manual, if any one of the letters and numbers are different there can be no guarantee that they will work! Sad but i.m taking mine back to the supplier, i can.t stand it any more.
Vikki (u.k)

 

[jbond04]

He is not asking about the Asus P4T533 board...he's asking about the P4T533-C. I have a 2.53GHz P4 running on an Asus P4T533-C motherboard with 1GB of PC1066 RDRAM (also made by Kingston). There are no stability issues with it at all. Back when PC1066 RDRAM first came out, some people had problems with their modules running at the specified speed, but those problems are all but gone now. As far as overclocking your RAM to PC1200 speeds, you may find success, and you may not. However, in order to reach those speeds, you would have to run your FSB at 150MHz, causing your 2.4B GHz P4 to run at 2.7GHz. Most 2.4's should be able to do this, but it may require a voltage boost for stability.

And just for emphasis....there are NO stability issues with the Asus P4T533-C motherboards.

 

[Rucsac]

Deleterious, Maxicat - as Jbond04 pointed out the P4T533 is the other version of the MB, though I was sorry to read about the stability issues!

After swapping from an overclocked AMD system I built 23months ago, I'd be really upset at my new one locking up ever! Especially under Windows 2k as well!


Jbond04 - Yeah remember following your thread at the time sir! May have even replied! Finally I have my RDRAM coming tomorrow, though had to settle for 4x128Mb Kingston 16bit Modules, instead of 2x256Mb one's -so upgrading Memory has a zero option for me now! Ah well -512Mb workspace is fine in current PC!

CloudsShinji - Thanks a million for the info, the ratios at the top of my post (3:4, 3:5, 4:5) were taken from the Asus Motherboard book! Who needs manuals eh!! I'll adjust them according to your advice!
: -)

What you have said to me makes perfect sense, at some point I must have read about the P4T533 and got mixed up that I could simply add RDRAM one module at a time, my error - thanks for putting me right.

I think I have read that the CPU shouldn't be set to Auto, but should be set to the proper "multiplier value", otherwise their can be problems posting.... either that -or it's the RDRAM and they advise not to leave that on Auto, but set it manually - anyway when I put the system together I can sort that out!

I am sure others will have found some of this info useful as well, so again, thanks to all concerned!

Ram comes tomorrow, HD on Thursday - then it's all systems go!!!!!!!!

Been watching the P4 developments since the very first 423 P4-details came out!
: -))

Finally! I can build a new one of my own!!

Cheers all.....

Wain

 

[Rucsac]

Jbond04 -Just as a matter of interest, are you running your FSB @ the std 133Mhz/1066RDRAM?

Thx!

 

[CloudsShinji]

No problem; happy to help.

Anyways, good luck with your new system and have fun!