Clarkdale, SS and PI32M (DDR3-2280CL8 32M)

[Massman]

Sometimes a man needs a break from all the high-end top-notch hardware overclocking and go back to basics. For me, basics means Super PI 32M with some challenges; in this case: Clarkdale and single stage cooling.

 

First, I looked up all the Clarkdale SuperPI 32M Single Stage scores in the HWBOT database, which rather surpringly resulted in a list of a mere 30 results. Then I ordered that list according to PI time and give it some nice Vbulletin tags.

 

431.672 seconds - pro with Core i5 655k @ 5388.00 MHz ( 898 CL6.0 6-5-17 )

439.047 seconds - 0Ro! with Core i5 661 @ 5589.60 MHz ( 972 CL8.0 9-8-24 1T )

443.000 seconds - Ross with Core i5 670 @ 5315.00 MHz ( 924 \N )

444.343 seconds - momoto with Core i5 670 @ 5586.50 MHz ( 798 CL6.0 6-6-19 1T )

450.547 seconds - RULE with Core i5 670 @ 5670.00 MHz ( 840 CL7.0 7-7-20 )

450.812 seconds - rambo R&B Team with Core i5 661 @ 5400.00 MHz ( 0 \N )

454.422 seconds - Chuchnit with Core i5 670 @ 5336.00 MHz ( 928 CL7.0 8-7-21 1T )

456.781 seconds - Brolloks with Core i5 670 @ 5400.00 MHz ( 0 \N )

458.906 seconds - RULE with Core i5 670 @ 5593.10 MHz ( 932 CL7.0 7-7-20 )

462.141 seconds - Vanz with Pentium G6950 @ 5272.00 MHz ( 0 \N )

467.437 seconds - Unseen with Core i3 530 @ 5192.00 MHz ( 0 \N )

472.703 seconds - majkel with Core i3 550 @ 5184.50 MHz ( 864 CL6.0 7-6-18 1T )

475.062 seconds - Brolloks with Core i5 661 @ 5200.00 MHz ( 0 \N )

477.250 seconds - kaidtor with Core i3 540 @ 5221.00 MHz ( 908 CL8.0 8-8-24 )

477.563 seconds - NAMEGT with Core i3 530 @ 5280.60 MHz ( 720.1 CL7.0 7-6-20 1T )

479.156 seconds - ScunnyUK with Core i3 530 @ 5170.00 MHz ( 705 \N )

479.438 seconds - isulk with Core i5 661 @ 5225.00 MHz ( 836 \N )

482.344 seconds - NAMEGT with Core i3 530 @ 5280.20 MHz ( 720.1 CL7.0 7-6-20 1T )

486.678 seconds - [GF]Duke with Core i5 670 @ 5359.80 MHz ( 794 CL7.0 7-7-20 )

490.792 seconds - Massman with Core i5 661 @ 5040.00 MHz ( 0 \N )

492.134 seconds - kaidtor with Core i5 660 @ 5304.00 MHz ( 816 CL8.0 8-8-24 )

494.125 seconds - muzwa kai with Core i5 670 @ 5400.00 MHz ( 900 \N )

494.271 seconds - kaidtor with Core i3 530 @ 5170.00 MHz ( 705 CL8.0 8-8-24 )

497.078 seconds - muzwa kai with Core i5 650 @ 5216.00 MHz ( 1043 \N )

499.092 seconds - systemviper with Core i3 560 @ 5012.60 MHz ( 1002.5 CL7.0 8-7-20 )

503.656 seconds - majkel with Core i3 540 @ 5014.50 MHz ( 872 CL6.0 6-6-18 1T )

503.828 seconds - koziro with Core i5 655k @ 5208.10 MHz ( 840 CL8.0 8-8-21 1T )

505.453 seconds - Rocx with Core i3 530 @ 5126.60 MHz ( 932.1 CL10.0 10-10-30 )

517.250 seconds - ocgmj with Core i5 661 @ 5005.30 MHz ( 770 CL9.0 9-9-24 )

534.282 seconds - johnksss with Core i5 661 @ 4920.00 MHz ( 600 CL7.0 7-7-16 )

 

What was I thinking?! Of course, when I need to find the most efficient (time vs cooling) Pi32M scores I need to check out Youngpro's profile first! That being said, I'm also impressed by Ross' run. I'm sure he would get really close to Youngpro with a bit higher CPU frequency.

 

So, after playing around a bit with this H55 board focussing on the Intel IGP overclockability, I went for a round of PI. Of course I don't want to use the 2:8 divider (which is totally shit on Clarkdale), so I needed to use the 2:10. It's also known that Clarkdale is pretty bad in memory overclocking, so anything south of DDR3-2100 I would be extremely pleased with.

 

So, without touching the subtimings or doing a copy-waza I reached this score:

 

(clickable)

 

[hwbot=1078597]submission[/hwbot]

 

Now, I need to go back to my lab and try to beat the other scores

[Hondacity]

do you think theres a future of...adding an efficiency ranking search function? or actually having an efficiency ranking in the future for cpu classes?

[Massman]

I don't really like efficiency rankings, because that makes it too competitive. What I am thinking of (~ concept/implementation) is having a button 'find similar scores' which would link you to a page with similar results so you can see how good you're doing. For instance, when you are running Pi1M on water with 955 deneb, this link would bring you to a page of all Deneb results on water cooling for Pi1M.

[chuchnit]

Nice result Massman! I really wanted to run some more 32m with the clarky, but the inlaws needed a PC more than I needed a toy. On mine either the IMC was getting wore out and having trouble in dual channel or the board itself was crapping out. I was having problems with stock clocks on the inlaw's rig until I bumped some voltages for it to cold boot in dual channel. Too bad sandy bridge is around the corner or I'd try for another setup and play this game with ya.

[Hondacity]

the search function would be great

 

thanks

[TaPaKaH]

if you want better 32M efficency you need to learn how to use more voltage on your mems

[1Day]

if you want better 32M efficency you need to learn how to use more voltage on your mems

 

And freeze the suckers

 

Some how do not think the one goes without the other at this stage. Maybe you have found a way Sam?

[Massman]

if you want better 32M efficency you need to learn how to use more voltage on your mems

 

The GTX2 kit is not mine, so I have to follow the voltage guidelines of the owner.

[Massman]

Oj101;4627705']My word James' efficiency: 2' date='325,848.736

Your efficiency: 2,340,554.88

 

You're almost there![/quote']

 

Efficiency-wise, I'm already there. Just can't get my phase to drop to -20°C with clarkdale. The read-out on the M3F is indicating -6°C

 

Small copy-waza. Also had a 23s flat, but pressed space bar and couldn't re-produce the run

 

[Massman]

As I mentioned already, I switched to a different mainboard to give this thing another spin. The M3F is giving me an extra 50 to 80MHz on the core most likely due to the tolerance for a bit more Vcore. In the end, CPU MHz does make the biggest difference. In terms of memory overclocking, the M3F doesn't do as well as the little H55 board, maxing out at DDR3-2110 so far. But, with the extra MHz on the core, I was able to push out semi-decent 'no-compromise' runs.

 

Here's my run with CW (3,5s gain over no CW)

 

[Massman]

And another board on the table. This time the old-skool GD80 that I've had since, what, a year now? Obviously I cannot expect this board to pwn the new PCB designs out there, but it turned out to be quite a handful.

 

Unlike the two previous boards, this one will not clock memory that nicely. DDR3-2045 seems to be the limit for now and that already requires a 10-minute workaround to get it ready to run 32M . Will post the work-around if someone's interested.

 

Anyways, it does seem I can nail a bit higher clocks than on the other boards: 5.32G is consistently stable. Also had a nice 'competitive' (not really efficient) run going, but it crashed after loop 24 (:shakes:) and the run after that rebooted at loop 21. FML. I'm sure tomorrow-night I'll produce a more competitive run in terms of end result. Efficiency-wise, unless I find the magic key to unlock DDR3-2100, it will be a no-go.

 

[Massman]

I'm sure tomorrow-night I'll produce a more competitive run in terms of end result. Efficiency-wise, unless I find the magic key to unlock DDR3-2100, it will be a no-go.

 

DDR3-2100! Too bad I had to ruin it with a shit copy-waza. Won't nail the M3F run, but low 23 is possible.

 

[Massman]

Expanding the search field for more challenges:

 

- SuperPI 32M

- Clarkdale

- 5200 < Frequency < 5700

- No cooling limitations

 

- 419.219 by Ross with Core i5 655k @ 5628.40 and GA-H55N-USB3

- 424.594 by uncle fester with Core i5 655k @ 5600.00 and GA-H55N-USB3

- 427.625 by jabski with Core i3 530 @ 5696.00 and GA-P55-UD5

- 427.937 by Moonman with Core i5 655k @ 5608.00 and GA-P55A-UD7

- 430.531 by GraduS with Core i5 670 @ 5670.00 and GA-P55A-UD4

- 431.672 by pro with Core i5 655k @ 5388.00 and GA-H55N-USB3

- 432.047 by splmann with Core i5 670 @ 5664.00 and GA-H55N-USB3

- 436.859 by Hicookie with Core i3 530 @ 5500.00 and GA-H55M-USB3

- 437.406 by gbglassen with Core i5 670 @ 5659.00 and GA-P55-UD6-C

- 437.453 by trans am with Core i5 655k @ 5670.40 and GA-H55N-USB3

- 439.047 by 0Ro! with Core i5 661 @ 5589.60 and GA-P55-UD3

- 441.453 by 1Day with Core i3 530 @ 5588.80 and GA-H55N-USB3

- 442.547 by Massman with Core i5 655k @ 5276.00 and Maximus III Formula

- 442.719 by KkWong with Core i3 530 @ 5478.70 and GA-H55-UD3H

- 443.000 by Ross with Core i5 670 @ 5315.00 and GA-P55-UD6

- 443.516 by Moonman with Pentium G6950 @ 5481.30 and GA-H55M-UD2H

- 443.656 by chew* with Core i5 655k @ 5357.00 and Sabertooth 55i

- 443.891 by Massman with Core i5 655k @ 5317.00 and P55-GD80

- 444.343 by momoto with Core i5 670 @ 5586.50 and P55 FTW

- 445.766 by Toolius with Core i5 650 @ 5525.00 and GA-P55A-UD4P

- 446.078 by Massman with Core i5 655k @ 5221.80 and GA-H55M-UD2H

- 446.800 by 1Day with Core i3 530 @ 5632.60 and GA-H55N-USB3

- 446.800 by 1Day with Core i3 530 @ 5632.60 and GA-H55N-USB3

- 447.484 by 69_Goat with Core i5 670 @ 5587.30 and P55 Classified 200

- 447.781 by over@locker886 with Pentium G6950 @ 5646.00 and GA-P55A-UD7

- 448.640 by Massman with Core i5 655k @ 5217.00 and GA-H55M-UD2H

- 450.390 by 69_Goat with Core i5 670 @ 5405.00 and P55 Classified 200

- 450.422 by eagle58 with Core i3 560 @ 5648.00 and GA-P55-UD3R

- 450.547 by RULE with Core i5 670 @ 5670.00 and GA-H55M-UD2H

- 450.640 by tiborrr with Core i3 540 @ 5683.00 and Sabertooth 55i

[chuchnit]

I like what you did there. No cooling limitations but you filtered down to ~ clocks within your cooling. I'll have to start doing that.

[Massman]

Sorry, moved my last post to here: http://hwbot.org/forum/showthread.php?t=13635

[Massman]

DDR3-2200 baby!

 

[TaPaKaH]

...on a Clarkdale, wow!

[Massman]

DDR3-2280 baby!

 

[Massman]

Improvement of personal best!

 

[Hondacity]

that is very nice...

 

vtt? temps?

[Massman]

VTT at 1.52V (depends on board). Temps in bios -16°C idle; according to M3F readouts, it's in the positive range whil load.

[Hondacity]

thanks

 

thats a nice imc....

[Massman]

I was stuck at 210MHz BCLK when I first started with the UD6 (just like I was on M3F and GD80). Fiddling with settings suddenly unlocked frequencies I didn't reach before.

 

IMC is good, but I'm not confident enough to say it's IMC only that dictates here. This is, as a matter of fact, just a random chip.

[Calathea]

Unusually high trfc, trrd and a lot of vtt is the trick?

[Massman]

Do note that I didn't tweak any of the subtimings for optimal performance. High values do not directly mean I had to set them that high for stability, rather those came standard. VTT isn't necessary for all this; it's only this high to make QPI at 5.3G stable. TRFC being this high is due to GBT autotables.

 

For boot, I set the main timings:

 

- tCL=7

- tRCD=8

- tRP=7

- tWR=10

- tWTP=1

 

When in OS, before clocking up, I changed the following timings:

 

- tRCD_WR = tRP+1/2 (for tRP=7 I needed 8; for tRP=8 needed 10)

- tRD_WR = 12/13

- tWR-RD = 12/13

 

This bios is fucking some things up in the memory timings, though. I need a hard reboot to change tRP. When running 7-8-7, I could never adjust tRP in OS above 7 as it resulted in an instant reboot. In fact, I think in general I was never able to increase tRP in OS to anything higher than boot value.