makaka, can you post some everest scores?
what chipset is that with? x38?
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makaka, can you post some everest scores?
what chipset is that with? x38?
:D Was a lot of work, really, but finally I got these sticks 32M stable at 1.92 Vdimm on Maximus Extreme:
http://img100.imageshack.us/img100/2...1000mhzqu9.jpg
:up::up::up:
The chipset is the good old p965 . motherboard asus p5b-e plus .Quote:
Originally Posted by saaya
memory timing 5-5-5-10 (1000 mhz)
As reference here is a screen shot of my current super pi @ 4 ghz 500(5-5-5-15 , 1:1 ) x 8 .Quote:
Originally Posted by camouflage
11.29 vs 12.33 :clap::clap: (nice DDR 3 boost)
hmmm weird, i thought pi gets a bigger boost from extra mem performance...Quote:
Originally Posted by makaka
you make it sound like your ddr2 1000 555 is as fast as ddr3 at 2000, well, its definately not ;)
what this really shows what we all knew already, pi has become a cpu cache benchmark :D
compare the everest results, mike has a 50% higher read bandwith and 50% lower latency...
well i am trying to find now the exact equation for DDR2 vs DDR3 in super pi .Quote:
Originally Posted by saaya
Currently 4100 mhz with 512 mhz memory (5-5-5-15) was slower , i am re benchmarking now with 4150 mhz (518 mhz same latency) . let see how much boost and cpu frequency give this nice DDR3 .
Now 4100 mhz cpu + 512mhz ram (5-5-5-15) < 4000 cpu + 1000 mhz ram (8-8-8-20)
:up:
4150 mhz + 518 mhz memory should result in slightly better result . But my memory crapped out in the loop number 17.
This geil memory do not like high voltage with 2.3v this memory was instable @ 518 mhz and even @ 500 mhz while it is completely stable @ 500 with 2.1 v.
So test proof that :
DDR3 1000 (8-8-8-18)+ 500x 8 = DDR2 518 (5-5-5-15) + 518x 8 cpu .
about (+140 mhz) cpu + DDR2 (500) is equal to 1000 mhz DDR3 memory in super pi .
unfortunately I am not able to view the image of your run atm - but don't worry to much about trfc - you won't loose too much as long as your mobo is all nice and tightQuote:
Originally Posted by camouflage
965 is like pre y2k technology -waaay slow in mem perfromance - forget about comparing everest.Quote:
Originally Posted by saaya
Malaka - it's hard to compare 1ms; or in fact any SuperPi without knowing what OS tweaks you and the other person are using. It's easy with a couple of OS tweaks to smoke someone who is running a "much faster" base system, keep that in mind comparing X with Y.
1m is all about CPU cache...
But you're right Saaya -seems like SuperPI is turning more and more into a CPU cache benchmark - it's hard measure real world performance improvement from memory bandwidth with CPU cache taking over a lot of the work; espcially when you are trying to tighten your secondary timings, for tests like SUperPI. Maybe we need 64m test :p:
Good that you don't - you'd prolly smoke most of us if you were to go cold!Quote:
Originally Posted by eva2000
Yes the right motherboard is really key for DDR3 performance - I just received 2 more sets of D9JNL and are hitting pretty much the identical memory clocks with those new sticks. It makes me really wonder how well this memory would perform with an even better board!
CAS 8, CAS9 or even CAS10 results could potentially blow our minds - if there was a board/NB which could cope with it.
:D Now I got it 32M stable tRFC 72 @ 1.92 Vdimm:):
http://img100.imageshack.us/img100/2...1000mhzqu9.jpg
:up:
For me there was no tweak just winxp 32 (daily use) with a tone of crap in the background :D:D.Quote:
Originally Posted by mikeguava
What are the most common OS tweak for SuperPi .
I am really interested in DDR3 :D and if it worth it i will update
someone can explain me what voltage for default setting mean ?
i am explaing better: in the cellshock box i found: 1866mhz at 1,7 / 1,9V.
It mean that i can find modules that can stay at 1866 with 1,7 stable or modules stables at 1866 at 1,9v ?
or is only a range for warranty ?
Quote:
Originally Posted by aerie
1.7 nor 1.9v is NOT touching potential warranty issues. Would you mind to show us some screenies of your runs??? Maybe we can get more suppportive as a community after we see what TF you are talking about
its actually 1.7v-2.0v :D
and yes, of course some need more volts than others, but yeah, the 1.7-2.0v is mostly about warranty :)
All kits should run 1866 888 with 1.8v, some even with 1.7v :D
best to wear protective gear!!!!:welcome:Quote:
Originally Posted by aerie
Why is my bandwidth so low ? bios p04 and p1 p2 enabel http://img507.imageshack.us/img507/6...0mhzhq7.th.jpg
Thats why you always get better results :rofl:Quote:
Originally Posted by mikeguava
For those speed I think they're goodQuote:
Originally Posted by maxxor
compare whith thisQuote:
Originally Posted by camouflage
wow, thats weird... your score sucks big time man! no offense! :p:
i have no idea why... i DONT think p1 and p2 are really enabled...
This looks more like a score without p1 and p2... actually even then it looks very low :confused:
790 is such a weird chipset...
Ive seen some awesome bandwidth results at 1600 777 that were better than 1800 777...
Something is very weird about clocking mem and fsbs high on 790... it seems the performance actally gets worse the higher you go.
Dinos insists its not the case if you enable p1 and p2, but from what ive seen even with those enabled and tight timings, the higher you go, the lower the scores seem to drop..
Can yo run 1866 777 please and post that everst score?
:D Mike - You still owe us the 7-7-7-14 pics on ME promised in Your first post......:p:
http://img228.imageshack.us/img228/5416/933km9.th.jpg What is this now i am real confused
hmmm almost the same score as mike had on the x48 board at 2000 777...Quote:
Originally Posted by maxxor
well, what can i say... 790 is... weird...
what about 1866 888?
Id say go for 1866 888 and then up step by step and check at what point performance degrades. then use baredit and make a register dump at both speeds, before and after the perf drop.
use examdif or another tool to compare the dumps to see what register change.
then change one register after the other and check what happens... and with some luck you find what settings change that degrae the mem perf at higher speeds, then you can tweak the mem perf to scale even at high speeds.
is there a clockgen or something?
if yes, then use that tool to increase the fsb and memspeed from within windows. the perf should scale the same if you do this as register should remain at the same setting.
http://img247.imageshack.us/img247/6...cas8bo6.th.jpg 8.8.8 18 no clockgen straight from bios
k... hmmm well idk man... id say... use clockgen and try to up with clockgen bit by bit.
That way perf should scale and not degrade the higher you get.
In case you have the time and are curious you can boot in steps and check how the performance degrades or changes, and at what point it changes.
:D I never use clockgen or getFSB - all my results are bootable....:p:
Give me a few more days - I am currently in Costa Rica, enjoying the beach :DQuote:
Originally Posted by camouflage
790i results...argh what a weird board. I think it very very important to have the right memory divider - prolly only linked really works well. I had lost lot of mem bandwidth going from 1600 to 2000, leaving everything else unchanged ( CPU , timings etc. ). Can't say much about 790i - just that it has been a pain so far - but I'll give it another shot soon