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[Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequencies - i4memory.com - different look at memory
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Old 17-05-2008, 02:06 PM   #1
dinos22
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[Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequencies

Hey Guys

I've tested many boards and i felt that none of them gave these 2GB DDR3 1800MHz Corsair Dominators proper justice. WEEEELLL times have changed and so did the arrivals of an RMA replacement board from Asus, namely P5E3 DLX (X38) and newest arrival in my torture dangeon from Gigabyte, namely X48T-DQ6

Man oh man do these new X38 & X48 boards unleash the power of this RAM

These runs were very fast 32M Superpi indeed >> i probably have a couple of seconds in efficiency to tweak out of it for all of them but it gives you an idea anyways :up:

If these were P35 boards i would probably be able to torture them into giving me PL6 at 500Mhz but for now on air stock cooling i'll back off on MCH volts

32M SuperPi time: 11m 01.515s
CPU: Intel E8500 3.16GHz
CPU Freq: 4000MHz @ 1.27v
Brand: Corsair Dominators 1800MHz CAS7
Model: DDR3-1800 7-7-7-20 2.0v
Size: 2GB Kit ( 2x1GB )
Voltage Used: 2.30V (max vdimm it likes >> anything more and results worsen)
Timings: 8-7-6-18 1T (very tight sumbtimings)
Frequency: 1000MHz ( DDR3-2000 )
Cooling: Air Cooling, 24C room temp
Motherboard: Asus P5E3 DLX 0703 bios
MCH Volts Used: 1.65-1.7v (fan blasting at the heatsink)
GFX Card: Gigabyte 9800GX2
PSU: Corsair HX620 (620W PSU)
Power meter: Powermate attached measuring 210W from the wall during 32M SuperPi run
Other settings: AI Clock Twister on Moderate; Transaction Booster: 3








32M SuperPi time: 11m 23.079s
CPU: Intel E8500 3.16GHz
CPU Freq: 3850MHz @ 1.27v
Brand: Corsair Dominators 1800MHz CAS7
Model: DDR3-1800 7-7-7-20 2.0v
Size: 2GB Kit ( 2x1GB )
Voltage Used: 2.30V (max vdimm it likes >> anything more and results worsen)
Timings: 7-6-6-18 1T (tight sumbtimings)
Frequency: 960MHz ( DDR3-1920 )
Cooling: Air Cooling, 24C room temp
Motherboard: Asus P5E3 DLX 0703 bios
MCH Volts Used: 1.65-1.7v (fan blasting at the heatsink)
GFX Card: Gigabyte 9800GX2
PSU: Corsair HX620 (620W PSU)
Power meter: Powermate attached measuring 200W from the wall during 32M SuperPi run
Other settings: AI Clock Twister on Moderate; Transaction Booster: 3 >> due to the fact i was running CAS7 MCH allowed me to run PL-6 on this run (for tight PL you need tight timings and CAS in particular

970MHz crashed on 8th loop so with some tweaking and vdimm tuning 970MHz 7-6-6-18 1T is within reach




I've been doing some testing with Gigabyte X48T-DQ6 with some equally impressive results


32M SuperPi time: 9m 58.437s
CPU: Intel E8500 3.16GHz
CPU Freq: 4598MHz @ 1.58v
Brand: Corsair Dominators 1800MHz CAS7
Model: DDR3-1800 7-7-7-20 2.0v
Size: 2GB Kit ( 2x1GB )
Voltage Used: 2.24V
Timings: 8-7-6-18 1T (tight sumbtimings)
Frequency: 968MHz ( DDR3-1936)
Cooling: Air Cooling, 24C room temp
Motherboard: Gigabyte X48T-DQ6 F4 bios
MCH Volts Used: i tried between +0.25 to +0.55v (fan blasting at the heatsink)
volts didn't seem to do much but results were there regardless
GFX Card: Gigabyte 9800GX2
PSU: Corsair HX620 (620W PSU)
Power meter: Powermate attached measuring 240W (i think eek forgot) from the wall during 32M SuperPi run
Other settings: Memory setting > Extreme

I could easily benchmark 980MHz but i am showing a screenshot with a sub-10minute mark which i was specifically benchmarking for >> i was a hair away from a 4573MHz sub10m run as well



If you would like so see a lot more of these crazy RAM speeds and extremely efficiency SuperPi run be sure to visit one of XS's oldest and longest running threads called 32m SPi Low Clock Challenge......see what some of the best superpi/system tweakers on this forums are up to and join in,.,.....it's a lot of fun and very challenging (BEWARE > you will kill lots of hardware for that extra second or MHz hahahah)

thanks for reading

dinos22

Last edited by dinos22; 17-05-2008 at 02:11 PM.
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Old 17-05-2008, 02:30 PM   #2
eva2000
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Re: [Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequen

Very nice mate.. see ya grabbed a powermate too
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Old 17-05-2008, 02:40 PM   #3
dinos22
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Re: [Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequen

thanks man

yeah i got it recently

pretty good toy
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Old 17-05-2008, 09:33 PM   #4
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Re: [Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequen

Great stuff mate, time for some 5.9G spi benching
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Old 08-06-2008, 11:08 AM   #5
dinos22
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Re: [Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequen

this gigabyte board is really something else

i could not run these sorts of frequencies and timings on any of my RAM in the past

i even managed some decent speeds/timings with two different RAM kits installed in there eek



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Old 08-06-2008, 06:11 PM   #6
youngpro
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Re: [Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequen

do you find the gigabyte better for c6 and the asus better for c7/c8?

i had a quick play with c8 on the gigabyte today and wasnt able to get stable at 1000mhz at stock voltages, but 991mhz looks okay and 996 is at loop 18 right now,

vmch +0.2
vdimm +0.5
all other voltages stock

x48t-dq6 f5a bios

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Old 09-06-2008, 12:44 AM   #7
dinos22
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Re: [Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequen

asus smashed Gigabyte in CAS7
i have all sorts of problems even getting XMP stable (doesn't actually run stable) lol

but CAS8 is very close to Asus....... ~20MHz difference
i can get about 980MHz stable 8-7-x-x on Gigabyte and 1GHz on Asus

i cannot run CAS6 on Asus as good as Gigabyte

i've also figured out some interesting things about my RAM with this board.......it seems my GTR sticks don't like going past 2.13v or so...........so all these results are basically +0.6
i found that best MCH volt results were with +0.375........and not to touch PCI Express and VTT voltage

CPU Skew 150ps however i have to leave GTL voltage as it is...............if i play with GTL i can post at much higher FSB but test#6 errors like crazy in memtest and i cannot get it nowhere near stable as CPU skew on it's own

it is still a bit frustrating that these boards refuse to work with 200 and 266 straps at any half decent clocks.................i seriously don't understand why they still have not addressed this

however every board revision sees excellent improvements from Gigabyte guys so they are most definitely improving but there is still a bit more to go........This X48T-DQ6 is definitely the best board out of the lot so far

i wonder if P45 DDR3 board will improve some more

also i think we need to get Gigabyte guys to unlock GTL reference and not use a 0.67 locked value with ability to tweak +3% or -3/6/9%.......
this should allow us to have better control over GTL REF and improve FSB OCing even more

btw what's up with your subtimings they are very loose
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Old 09-06-2008, 02:10 AM   #8
youngpro
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Re: [Team.AU]2GB DDR3 1800MHz Corsair Dominators TORTURED > beware high/tight frequen

lol to get anything about 980mhz 32m stable on this board i had to loosen them RIGHT off
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