P4P800, Pentium 4c, 800MHz FSB, PC3200 Memory Timing Thread

[dfehlberg]

I would like to use this thread for people using the P4P800 (and Deluxe) running the 800MHz FSB to see what bandwidth they are able to get out of this machine & RAM.

For myself, using OCZ Dual Channel Optimized PC3200, I see the following:

AI Overclocker: STANDARD
Performance Mode: AUTO
Chipset Timing: 2.0-3-3-6
MAM: ENABLED
MemTest86 Bandwidth: 2472
Sandra Buffered: can't recall

AI Overclocker: STANDARD
Performance Mode: AUTO
Chipset Timing: 2.5-2-3-5
MAM: ENABLED
MemTest86 Bandwidth: 2539
Sandra Buffered: 4541/4493

AI Overclocker: STANDARD
Performance Mode: AUTO
Chipset Timing: 2.0-2-3-6
MAM: ENABLED
MemTest86 Bandwidth: 2611
Sandra Buffered: 4500/4504

AI Overclocker: STANDARD
Performance Mode: AUTO
Chipset Timing: 2.0-2-3-5
MAM: ENABLED
MemTest86 Bandwidth: 2611 :-)
Sandra Buffered: 4556/4549

All of these settings run without Memtest86 errors - tested for hours at a time. I am currently running the last setup.

Setting Performance Mode to STANDARD or TURBO either hangs the machine or comes up with worse MemTest86 results than my last setting. So I seem to have "Maxed Out".

Just for curiosity sake, I am including the data for using Crucial PC3200 (CAS-3):

AI Overclocker: STANDARD
Performance Mode: STANDARD!
Chipset Timing: 3.0-4-4-8
MAM: DISABLED
MemTest86 Bandwidth: 2186
Sandra Buffered: Don't recall

:wave: If you are running the 800MHz FSB, please post your results. I would appreciate any feedback.

[ThugsRook]

i had a hard time getting TURBO to work on that board, and i was at a much lower FSB.
when i did get it to work ~ it was slower then standard.

nice results :wave:

[Tony]

Setting Turbo and MAM at 200fsb will force 2-2-2-5 timings and a multitude of chipset tweaks.The P4P800 at 200fsb with these settings is IMO the fastest board you can get but you need damn fast ram to be able to run it.Here are some sandra benches showing the forced timings etc, i had set 2.5-3-3-7 in bios.

http://homepage.ntlworld.com/ad.leach/PAT%20article/PATonSandra.JPG

The fsb is 202 as the board is an ES sample but performs just the same as my retail copy here.

You set 201 or higher fsb and you lose this performance till you hit 217fsb where the memory bandwidth catches up.What we need to figure out is the chipset tweaks asus implement at 200fsb as it makes the board a screamer.

[ThugsRook]

Originally posted by Tony
Setting Turbo and MAM at 200fsb will force 2-2-2-5 timings and a multitude of chipset tweaks.The P4P800 at 200fsb with these settings is IMO the fastest board you can get but you need damn fast ram to be able to run it.Here are some sandra benches showing the forced timings etc, i had set 2.5-3-3-7 in bios.

the ic7 is faster with pc3000 :na:

unbuffered sandra 200fsb 400ddr c2226 = 3545 / 3348 mb/s


id say the "screamer" is equal to "GAT street racer" on my board.
if my cas was set by SPD it would auto become 2225, just like you said yours does. (but i can manually override the cas settings)

HTH :-)

[Tony]

its only faster if

1 your using double sided dimms, mine were single sided.
2 your using 98SE which shows higher bandwidth.Nothing more.
(as you have proven in your xp vs 98 threads)

I have benched this against

max3
IC7
p4c800 D and E
4PDA+2
Albatron865Pro2
etc etc and I know what im talking about...all with the same ram and same cpu.

So Thugs please compare apples to apples before saying the IC7 is faster.

Also remember i now have IC7, max3 permenantly set up and have run 40hrs+ benching on both boards..i know what works and what doesn't as thats what im payed to find out.

The P4P800 is faster ONLY at 200fsb with all tweaks enabled and a C cpu, I did have a bench I showed Mikki proving this as I had to clock to 217fsb with the IC7 just to match the P4P at 200.

So if you have BH5 based dimms and plan on 0 overclocking the p4p800 may be the board to get.

[ThugsRook]

my system sure is a thorn in your side ;)

its the memory ~ this stuff is the fastest out there for 400ddr.
but then again i ran this stuff on my p4p800 too ~ so i do know exactly what im talking about.

:p

[Tony]

Thugs you ran it with a B and NOT a C cpu...unfortunately for you the tweaks at 200fsb just don't happen with a B..

I like the IC7 a lot, i agree its a very tweakable board.I also have asked Abit to try and calm the GAT features so peeps with CH5 or other reasonably fast ram can take advantage of them.

Your rig is not a thorn in my side at all, its just hardly anyone runs a B cpu in a canterwood board and because of this i have to know what works with C's.People are moving on to C cpu's and ddr466+ ram, while i know you have proven older slower rated ram can be just as fast most of this ram is not available anymore, the glory days of week30+BH5 have long gone unfortunately and we are looking to find the ultimate alternative.

RevB hynix is proving to be very nice, 2-3-3-5 or at best 2-2-3-5 at ddr400 and all the way over ddr533 is possible from the same modules.I have a feeling will will be seeing 2-3-3-6 at ddr500 commonplace with this ram and the 5:4 days will be long gone.

Please don't take this personnally m8 as its not mean't that way, what you need to do is borrow a 2.6C for a week or so and have a play with it, im sure you will see things a little differently when you do.

[dfehlberg]

Tony, I set Turbo Mode ON, MAM ON and the timings to 2.5-3-3-7.

Refuses to POST. Voice says "System CPU overclocking" :confused:

I used to be able to run "STANDARD" for 20 minutes, but then memory errors started to show in MemTest86.

In your SANDRA tests, what speed DDR are you using?


:wave:
Addendum: I hang at 2.0-2-2-X where X is 5 or higher and the rest are BIOS defaults.

NEVERTHELESS, I AM QUITE PLEASED WITH THE PERFORMANCE AND STABILITY OF THE OCZ PC3200. And very much so with OCZ support.:p

[ThugsRook]

Originally posted by Tony
Thugs you ran it with a B and NOT a C cpu...unfortunately for you the tweaks at 200fsb just don't happen with a B..

I like the IC7 a lot, i agree its a very tweakable board.I also have asked Abit to try and calm the GAT features so peeps with CH5 or other reasonably fast ram can take advantage of them.

Your rig is not a thorn in my side at all, its just hardly anyone runs a B cpu in a canterwood board and because of this i have to know what works with C's. People are moving on to C cpu's and ddr466+ ram, while i know you have proven older slower rated ram can be just as fast most of this ram is not available anymore, the glory days of week30+BH5 have long gone unfortunately and we are looking to find the ultimate alternative.

RevB hynix is proving to be very nice, 2-3-3-5 or at best 2-2-3-5 at ddr400 and all the way over ddr533 is possible from the same modules.I have a feeling will will be seeing 2-3-3-6 at ddr500 commonplace with this ram and the 5:4 days will be long gone.

Please don't take this personnally m8 as its not mean't that way, what you need to do is borrow a 2.6C for a week or so and have a play with it, im sure you will see things a little differently when you do.

not taking it personally at all and i couldnt have said it better myself.


we are looking to find the ultimate alternative
thats sad, very sad :(
you guys are paying top $ to keep up with an old B chip and pc3000 ram :rolleyes:

doesnt that say something about the current tech right there?

[Tony]

Thing is we have IC's that will run 2-2-3-5 at ddr400+ but RAS to CAS is a real problem.winbond moved to CH5 and its not as good as the old BH5 although it will clock higher.

So its not the likes of OCZ or the others thats the problem its that IC's now just don't run TRCD as tight.