Sub 4GHz SPi 1M

[quake6]

Is it possible to go below 11.550s with sub 4GHz in 1M super pi? I run it at 470*8.5 with 7-6-5 1880MHz DC and just cant go below 11.560s... What is you result?

[jas420221]

I was 11.4xx with a 3.9Ghz quad (488Mhz), and 4-3-3-12 timings..let me dig up the SS

[makaka]

sub 4 GHz ?? do u mean for 3999 Mhz ? or how much exactly , i can do some test

[ceemic]

There's nothing hard about that.
Lets take "performance points" for reference (spi1M time x CPU MHz).
I'll point out that Super Pi "performance" depends on OS(XP usually faster than Vista etc); ram speed/timings; FSB; services/programs/processes etc; chipset; HDD etc.

A "normal" 24/7 45nm+DDR2@CL4 system does ~46500pp. When we want 11,549sec, then 46500:11,549=4026MHz
A little bit "lited" XP with less background processed does below 46000pp (my P35+E8500+DDR2@CL4 did 45800pp 24/7).
Example: 45900:11,549=3974MHz
Well-tweaked systems can do even below 45000pp (high-end extreme tweakers can do even below 44000pp). That means fresh OS (usually lited), only essential services + "OS tweaks", real tight ram timings etc etc etc.
Example: 44500:11,549=3853MHz

Commonly DDR3 is a little bit slower in 24/7 spi1M (because of timings). I'd say around ~47000pp or worse.
Example: 47100:11,549=4078MHz

It's simple math Just multiply Your CPU MHz with time so You'll see how Your system performs.
7-6-5 1880MHz DDR3 for 24/7 is really good and should do below 46500pp easily. If it can't, then You'll have to look whats "bottle-necking" Your system. Probably old OS, full of "crap" etc. You can see a little boost when You close all "unnecessary" processes in TaskManager, set affinity to one core and use RealTime
PS. What motherboard are You using?
Good luck!

[quake6]

I run it at diagnostic mode,set affinity to cpu 1,and SP to realtime... Fresh install of windows XP SP1,no drivers for chipset,gpu...

I'm using black ops with gts memory chips
Timings was 7-6-5-15-52,Performance level was 6,twr 20,twtr 16,trrd 5,trtp 5...

Here is screen shot


And when I'm asking,is this good score?

[TheGanG]

Just serving a super light XP with almost "0" background activity helps a lot...

(XP+nLite/142MB CD)

[quake6]

Where can I find that super light XP
Do you have image?

[ceemic]

quake6, that's almost OK, tho I would have quessed with these timings and "tweaks" it performs below 46000pp.
Try to boot with 398FSB and use SetFSB in win to go the same clock :P

[ceemic]

I use 183MB XP install CD for benching in 36GB Raptor The memory usage is 26MB and only 1 service running
I can help You with that: PM

[quake6]

I just dont know where I'm making mistakes for SUB 4ghz... Sub timings are also quite tight,memory is working at 2.3v and that is enough for very tight sub tim.,and in task manager I turn everything that I can,I have only 6 (i think it is 6) process in it

[TheGanG]

Where can I find that super light XP
Do you have image?

Yeah homebrew, but it's illegal to make copies

u better download nLite and some manuals to create a light XP image...

S-LightXP/AWD 9D Max/E8600/Kingston HyperX 1066/No Tweaks...

[KanGaXx]

ddr2 perform better than ddr3 at spi1mb...
if you try 8mb or 16 or 32 ddr3 own!

[quake6]

And how did you achieve that?
Ok,I got 11.547s,for now... Stay tuned

[ceemic]

Also note, that spii1M efficiency depend on motherboard manufacturer also
Usually Gigabyte<Asus<DFI with same chipset.

[quake6]

Here are my settings...

[jmax_oc]

11,2xx @ 4GHz is very doable with any Intel chipset and prepenryn BIOS

[quake6]

And could somebody say where I'm mistaking? I did nlite XP,fresh install again and it's the same...

[makaka]

u may try a some lower memory timing . this may help . As said above DDR3 is not good for 1MB but if u try 32mb 16 or even 8 mb your result will be far better

[redratamd]

E8400 500X8
OCZ Vendicator
2x1GB Geil Ultra PC8500 D9GMH 500MHz 4-4-4-12 2.25V
P5K Vanillia Vmod pencil Vdroop only
XP Pro SP2 lite by me
Services killed (35Mo ),run with real time ,affinity core #1

Score : 11.250s

[quake6]

@makaka: I just cant go lower then that...
@redratamd: nice score

[TheGanG]

11,2xx @ 4GHz is very doable with any Intel chipset and prepenryn BIOS

Yeah, "unknown CPU" makes a good job...

[quake6]

These are my results...



I have to take of 7s for 32m... I use maxmem 512,no PF,waza size 480mb,single file size 128kb and no CDT...

[quake6]

Okay...After 2 all day benching,I've finally manage to get this

[ewitte]

At 3.8Ghz, my 24/7, I'm around 12.3-12.4 but thats with PC6400 ram and auto timings.

[Bullet92]

Be free to post your setup here