SandyBridge 2D madness - let's tweak for the best 1m, 32m, pifast and wprime!

[3oh6]

weird dude

i am in 6m33s and not on my pi OS yet

go through the BIOS then, what the hell do i have turned on/off that is messing it up.

are you running I/O latency at 1? what BIOS?

[dinos22]

give me a moment i will post it all up

[cheapseats]

still investigating why but tightening subs mildly even i start to get slower, tFAW and tWL seem to be triggering something from early findings

hoping you can do 5GHz runs

can't see tWL (tWCL aida) in HWinfo, but aida shows most of what's in GB bios.
found tWL runs +1 on gtx2 > OCZ (performance is the same)

got the gtx2 running ok now, but to equal or beat the ocz on max performance at C7,
the gtx2 need 0.02v > OCZ on SB. the extra vdimm depends on the command rate.
CR1 with almost any subtiming on gtx2 will not run until the vdimm is as high as the ocz
but at auto subtiming, or CR2 with tight subs, gtx2 runs 7-7-6 1067mhz @ 0.1v lower than ocz can.

for tWL set/reported difference:

i set all same manual timings/subs on ocz and gtx2, all same tweaks and waza,
and gtx2 is faster by 0.4s @ 5ghz 1067mhz

but the OCZ can run tWL 6 @ 1093mhz, on gtx2 tWL 7 is stable min at 1067mhz. each tWL -1 = -0.4s @ 5ghz 1067
so i think set tWL is different between the sticks.. for 32m performance tWL 6 on OCZ = tWL 7 on gtx2

my timings:

OCZ @ 1067mhz+ (all OCZ runs posted^)
values as bios set

7-7-6

tRFC 58
tWTR 4
tWL 6
tWTP 15
tRTP 4
tRRD 4
tWR 12
tFAW 16


GTX2 @ 1067mhz+
values as bios set

7-7-5

tRFC 55
tWTR 4
tWL 7
tWTP 14
tRTP 4
tRRD 4
tWR 12
tFAW 16


50x 100.0 (100.2 bios set)

GTX2 @ OCZ timings^ except tWL = 7 (OCZ @ OCZ timings^ (tWL 6) = 6m32.844)




50x 100.0 (100.2 bios set)

GTX2 @ GTX2 timings^

[dinos22]

As i said before its not my Pi OS so catching cheapseats wont be a problem with the right OS and more tuning, you can see my bonus round was also bad loop24>finish, with the right bonus round that would have been 6m33.3s








i've uploaded a video as well but it hasnt been processed by youtube

http://www.youtube.com/watch?v=OYYNoFj4N7s&hd=1

[3oh6]

As i said before its not my Pi OS so catching cheapseats wont be a problem with the right OS and more tuning, you can see my bonus round was also bad loop24>finish, with the right bonus round that would have been 6m33.3s

i;m talking full bios setup, it isn't in memory timings. 5 seconds is a fundamental issue. cpu settings, etc.

[dinos22]

I've also tested all the SATA controllers and they all perform the same

currently on Intel white SATA3 port0

[dinos22]

im off to the beach its ing hot here lol

[Johnny87au]

dinos that that hot here in syd compare to last week = /

[G H Z]

Interleaving?

Damn you dinos, don't tell us northern hemishpere people about the beach. It's 9° here and rain

[OC Maximus]

Good stuff Men, keep it coming.

Nom, nom, nom, nom...........

[chew*]

Dino my issues seems more or less, setting max mem and or waza = zilch in my board... seems really sluggish HD wise to, I swapped drive for a diff one same thing.....swapped ports same thing.

Diff board maxmem -3s + waza -2s........ maybe its my 2500K.

[dinos22]

my time without wazza would be faster than what you and jody showed earlier so its gotta be something else

2500K is probably a bit slower, i dont have one to test to be honest but with less cache its highly likely to be slower a touch

[dinos22]

Sub 5.56ms all day with 58X

holy Dumo that is a hell of a chip

you still on Biostar? push it harder mate i wanna see some 01 action from you

[chew*]

my time without wazza would be faster than what you and jody showed earlier so its gotta be something else

2500K is probably a bit slower, i dont have one to test to be honest but with less cache its highly likely to be slower a touch

What are your gains from say auto settings to manual?

I find it hard to believe that i can run almost all subtimings 1-1-1 at 2200 ram on air

Gains I see are about the same as jody's 2 secs from manual to stock.

[dinos22]

i run SLOWER when i go really tight than full auto, few seconds difference

you have to test all timings one at a time, very time consuming but prepare to put the time in to find out WTF is going on. I had to do it when jody asked me about this difference he thought there was and I kept getting some odd results with gungho tight timings (untested) so i went back and isolated them, setting auto settings one by one and then slowly tightening some little by little.....

what i am using with my kit and IMC may not work for others either so if it doesnt back to the drawing board and test it all out basically

[chew*]

i run SLOWER when i go really tight than full auto, 3-4 seconds difference possible

you have to test all timings one at a time, very time consuming but prepare to put the time in to find out WTF is going on. I had to do it when jody asked me about this difference he thought there was and I kept getting some odd results with gungho tight timings (untested) so i went back and isolated them, setting auto settings one by one and then slowly tightening some little by little.....

I did that from the very beginning.....MY actual setttings that i was using was way diff than the video......i just realized that hey half of thse subs seem to not work at all and started sucking them in to confirm.

Also your timings you posted plus the timings in my video = same times.

I'll take a stab at it more tommorow i guess.

[Pt1t]

http://valid.canardpc.com/show_oc.php?id=1639917

This one looks Good enough for 32M

[dinos22]

oh of course the legend that brought his amazing (photochop) skillz to the world is about to rule the world again

[Johnny87au]

Getting closer to 6ghz! nice one P1t

[Pt1t]

oh of course the legend that brought his amazing (photochop) skillz to the world is about to rule the world again

Yes but you cant use it to edit validation files

[dinos22]

I'm open minded

[FlanK3r]

cooling is SS?59x whau!

[SoF]

Nice time chew! Looks like 2500K isn't all way lost against the bigger cache of 2600K.

Yesterday I was testing some cheapo crappy MSI P67-C43. There is / was a contest on a german site where you needed MSI board so I went out to get the cheapest piece I can get. The bios is pita and bios up to .185 will allow 1,35Vcore only, new one will give you "amazing" 1,5V - there is no vccsa, pll or io voltage setting
My RAM wouldn't run good, I corrupted the bios several times, yeah it was fun ^^ But managed the "aussie basis reference time" of 6min 39s

6min 39s 500ms

[chew*]

Sof that run was full tweaks and highly tuned PSC. Still think 2500K is slower at min 2 secs CPC.


Jody I assume your on phase still?

I'm at max 20C cpu full load.......6C quite often.

Dino your on H70 water normal ambients?

Cheapseats what temp are you running the cpu at or keeping it under?

[dinos22]

yes as you can see in the video, i had 40C idle lol