How to 865PE@875P???

[b|gf|sh]

But what does that actually do though, and is it gonna slow anything down?

[Ace-a-Rue]

If price doesn't matter, I would go with the P4C800-E

[Kunaak]

well my P4P800 here disables it no matter what past 200.

then if you enable PAT it will default you to 1:1 no matter what.
so doesn't really do me any good...
I know I seen Pat enabled a few times, but I always thought it was a glitch in CPUZ-like my old 10k FSB and such shots I got from older versions of CPUZ.

might be nice on some PC4200 ram or so, if you start OC'ing with clockgen from 200, instead of booting up overclocked.
but for me-no 5:4 so doesn't help much...

[macci]

b|gf|sh, it makes the NB chip run in 'undocumented' 667FSB mode which makes it possible to run FULL PAT with i865PE and 5:4 RAM divider.
In 533FSB mode the PAT is automatically enabled on both 865 and 875 but 533FSB mode only has 1:1 divider and then 3:4 and 4:5 for running RAM at higher than FSB. 667 mode uses PAT by default too on both i865 and i875 and it also has the 5:4 RAM divider (1:1 too of course).
800FSB mode disables PAT on i865 chipset no matter what RAM Divider.

[b|gf|sh]

Ah right, thanks big man

(This IS7 aint bad after all, all I need now to get a vDimm mod done on this thing )

[Soulburner]

Can 667 strap be set on P4P800? (mine is running as P4C800 right now but I don't know how to change this strap)

[macci]

There are no BIOS settings available on ASUS for doing that.

[Jupiler]

2.6C @ 3410Mhz, 262FSB, 5:4 divider, H/W Strap set at 667Mhz.
As you can see, PAT is fully activated.

[stefanos9]

How do u set this NB Strap @ 667 ???

[kiko]

My P4P800 performs (w/o PAT) quite well seeing your 865 PATed boards.



Ciao

[Tedinde]

My IS7 got better mem numbers than any board i've had.

Only way i can explain this is pat is enabled @ 5;4

237 @ 1:1 wouldnt get me 6500 on my IC7 and i cant get that high on my IC7 @ 295 5:4.

[skate2snow]

Originally posted by kiko
My P4P800 performs (w/o PAT) quite well seeing your 865 PATed boards.



Ciao

can you send unbuffered score??

[Ace-a-Rue]

865 PE chipset (P4P800) at 231 FSB, 3.2-EE@3.7. Notice how ctiaw shows the L3 being there but Sandra does not!

[Clevor]

Yes, with the Asus and Epox 865P boards, you cannot set a 667 strap in the BIOS, so you can't enable full PAT at 5:4. In fact, on the 4PDA2+, I can set the ram to run full PAT in the BIOS over 200 fsb, but when I set it to the 5:4 or 3:2 divider, it defaults to 1:1.

Interesting this IS7. I may give it a try. I still don't think it will beat the unbuffered scores, at 1:1 full PAT, that I get on the 4PDA2+:

[skate2snow]

are you sure you disable all CPU apps in the unbuffered score you send there?!?!?!? those score are awesome!!!! whats your buffered score???

[Clevor]

I have tried a lot of good ram and a lot of boards, but I have not seen higher unbuffered myself (Memtest clean). Even on Epox's Canterwood board, at 250, 1:1, 2-2-2-5 I see just under 3600 unbuffered. On the 4PDA2+, I get the same marks with OCZ PC3700 Golds at DDR490, 2-3-3-6!

The run above is Memtest clean but not 3D stable. I can bench 3D at 290, 1:1, 2-2-2-5, where I still break 3700+ on both scores. I've posted a screenie on another thread. Ram is 1 GB XMS3500.

I did not check buffered on this 4PDA2+ board, but I will the next time I have the rig set up. In my experience, the boards with the best unbuffered do not give the best buffered. Buffered scores are all over the place depending on the board. I think the best buffered boards are the IC7 and P4C800-E.

[skate2snow]

coze your score is amazing!!!!!!

[Clevor]

Yep, and that's 3700+ unbuffered at CAS 2-2-2-5, not 3-4-4-7!

[skate2snow]

me ive only got 3000MB/s whit 230MHz 2-2-2-6 and 3.25V

[kiko]

Originally posted by skate2snow
can you send unbuffered score??

Ciao

[Tony]

Look here to turn a P4P800 into a canterwood killer...1:1 only though.

http://www.abxzone.com/forums/showth...threadid=51548

865PE Infinity at 233fsb all PAT tweaks on.




3400Unbuffered at 233fsb is pretty damn fast with 2.7V Vdimm.3700Gold Rev2.Bug in CPU-Z picks up the chipset strap over the ram frequency..it was running 233fsb 1:1

[Ace-a-Rue]

Bigtoe, what benching program is availabe, that I can get as a freeware, tests the memory system including L3 cache?

[kromosto]

i dont use 5:4 pat because i dont believe its stable for me in 1:1 i can go 240 2-2-2-5 with out any probs but in 5:4 after 220 probs begin