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Using Pc800 rimms in p4t533

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August 12, 2002 2:26:48 PM

Hi
I have decided upgrading my motherboard to a p4t533 asus one, and a 2.4b pentium4. The question is, can I use my 512mb kvr800x16 with it, and if affirmative, can it run at 1066?
Thanks in advance

More about : pc800 rimms p4t533

August 12, 2002 6:38:43 PM

Nope, The P4T533 accepts 32-Bit RDR only

You are limited to what your mind can perceive.
August 12, 2002 6:47:54 PM

Quote:
Nope, The P4T533 accepts 32-Bit RDR only

I thought there were two versions of the P4T533, one for 16-bit RDR and one for 32-bit.

Ritesh
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August 12, 2002 7:05:41 PM

there is the p4T533-c and the p4T533. one for the 32 bit and one for the 16 bit.
August 12, 2002 7:50:02 PM

Nevermind, the question is : can I put my current ram (I think its 45 ns) in a i850 motherboard that accepts the 182 pin ram and run in 533 Mhz fsb?
Intel says only in 400 mhz mode with 45 ns rimms, but I have read the memory in this motherboard has a multiplier that makes the memory run at 400, even in 533 mhz mode
That is what I dont understand, why only 40ms rdram when it is running at 400 mhz actually
Thanks
August 12, 2002 9:06:04 PM

Quote:
can I put my current ram (I think its 45 ns) in a i850 motherboard that accepts the 182 pin ram and run in 533 Mhz fsb?

Yes, the FSB and memory can run at different speeds. To take full advantage of the 533 FSB your memory should also run at 533 (PC1066), but your current memory probably won't overclock that far. So you may need to stick with 400 MHz memory speed (PC800). But the FSB can run at 533 (actually 133, but quad-pumped).

Ritesh
August 12, 2002 11:29:15 PM

Quote:
Thanks for your help, Iwas asking this because of this webapge:
http://www.intel.com/design/motherbd/mv2/mv2_internalme...

That page confuses me too. I'm not sure what it's saying. From what I've heard the 40ns RIMMs can safely run at 533 MHz (and maybe that's what the page is talking about), but as far as I'm aware there's nothing to prevent you from running your 45ns memory at 400 MHz on a 533 FSB system. I could be wrong, hopefully someone with more experience will answer this question.

Ritesh
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August 13, 2002 1:15:16 AM

OK, you would be talking about the P4T533-C, notice the -C on the end, this board uses standard PC800/PC1066, in pairs. You can run the memory at 3x133 instead of 4x, this is what Intel actually recommends anyway, but you will indeed loose the performance advantage of the 533 bus. Do you have a pair of RDRAM already?

<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>
August 13, 2002 8:07:18 AM

When you say standard if you are referring to 4 rimms kvr800x16/128 kingston value memoy which I use now in a 850GB motherboard, and is not 40ns for sure, yes, but I must be 100% aware I can use this memory with 533 fsb reducing memory multiplier.
Also, I wish to ask you this, what is better for overclocking, the regular 2.4 or the 2.4b processor
I have a negative overclicking experience with 133 fsb buses like the p3800EB, which wouldnt go far from 840 mhz due to the other components crashing beyond 140 fsb
Thanks in advance, I need a fast answer
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August 13, 2002 10:54:46 AM

Hmm, they should both be the same core revision, I've heard of the "B" processors being better overclockers, but I don't think that applied to the 2.4A, which, due to it's higher clock speed should also be the latest core revision.

Anyway, I'm SURE that you can run the multiplier at 3x. I KNOW this because, that's the only rate approved by Intel for the i850E with a "533" bus CPU! Intel hasn't approved PC1066 use yet. In fact, I doubt that on a board <b>manufactured</b> by Intel you can get any speed except PC800 speed. So you can choose that speed on third party boards as well.

All your components should tolerate 150MHz FSB at the very least. Even after hearing some horror stories, I've had my board at 174MHz FSB/44MHz PCI. I've seen very few cards cause stability issues at or below 41MHz FSB, which would be 165MHz FSB!

<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>
August 13, 2002 10:28:12 PM

Hehe, I must disagree with you, my friend
First of all, thank you all for your comments and help
In the pc800 rdram concern, I think you are right when you say 3x multiplier can be run with this motherboards, but in some sites (extracted from intel webpage:) 

"PC800 RDRAM* memory is offered with two different specifications, PC800-40 and PC800-45, both of which run at the same frequency and have identical bandwidth, but have a subtle difference in internal timing. The Intel® 850E chipset supports the PC800-40 memory when running at 533 MHz system bus. The Intel 850E chipset supports both the PC800-40 and the PC800-45 memory while running at 400 MHz system bus. "
I think that even with this, the 45ns modules will work, like you tell...

In the second part, you say intel i850e motherboard, like the new D850EMV2, will never work at more than pc800 speeds even when using pc1066 rdram; well, I am not with you here, look at this website:
http://www.hardocp.com/article.html?art=MzE2LDE=
Here, you have a review of this motherboard, manufactured by intel, where the use of pc1066 rdram makes most applications run 5-7% faster than when using pc800 rimms, so I think this motherboard ACTUALLY supports this new rdram
Thanks for your time and farewell
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August 13, 2002 10:52:56 PM

I'm just repeating what Intel said, if they did something else with their boards and never said anything, how would I know?

<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>
August 13, 2002 11:14:38 PM

Hehe, it was only some objective data i found in the internet, wasnt for you, mate
According to that it seems d850emv2 is as good as p4t533-c so I will be taking the intel one with 512 mb pc1066 ram
Do you think is a good choice?
Salute
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August 14, 2002 12:03:12 AM

No, because the P4T533-C has a lot more overclocking and performance features which you may want to use at a future date.

<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>
August 15, 2002 5:24:01 AM

The P4T533-C has a limited 154FSB available in BIOS, and you lose vcore adjustments with dip switches. extreamly stable and stronger than other I850E boards at equil speeds.

I now have a P4T533, this board is superior to the -C version. Bummer that it has ICH2 but I do like the Promise ATA133 RAID onboard.

You are limited to what your mind can perceive.
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August 15, 2002 6:15:08 AM

Yes, the Intel board has no adjustable bus speed and no voltage adjustments, not even by jumper.

<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>
August 15, 2002 7:03:42 AM

gigabytes mobo (I850E) cannot go over 157 FSB

The day i meet a goth queen that tell me Intel suck.I turn in a lemming to fill is need in hardware.
August 15, 2002 7:06:09 AM

Can you run some benchmark on lantency

The day i meet a goth queen that tell me Intel suck.I turn in a lemming to fill is need in hardware.
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August 15, 2002 8:05:22 AM

Read read read, read and you won't make an idiot out of yourself. He ask whether he should get the Intel brand board, I said no, because the Asus has overclocking features. Fugger said the Asus won't go over 154MHz FSB, now you're saying the Gigabyte won't go over 157MHz FSB, GUESS WHAT, BOTH THOSE NUMBERS ARE GREATER THAN 133MHz FSB!!! What does that mean? OVERCLOCKING!!! You both loose your argument, did you not realize that bus speed is not selectable WHATSOEVER on the Intel brand board?

<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>
August 15, 2002 12:02:08 PM

Is it possible then bring the 2.4 b to 2.77 Ghz (154 fsb) with stability in the asus or gigabyte motherboards?
Which fans are you using?
Will the pc1066 memory keep with that?
Will the graphics card keep with that?
August 15, 2002 5:43:39 PM

Double your dosage stat.

I was pointing out the limitation, not trying to argue.

You are limited to what your mind can perceive.
!