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Old 01-28-09   #1 (permalink)
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Talking 6x1GB Corsair + GSkill + Cellshock (HCF0 + D9GTR) combo

First time mismatched 6x1GB triple channel. Still manages to accomodate my push 120x38mm thick Scythe UltraKaze 2000rpm fan with memory module installed in dimm slot 1

System specs
  • Intel Core i7 920 3836A756
  • Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
  • DFI LP UT X58-T3EH8 R.A51 - 01/23 beta bios
  • 128MB Gainward FX5200 PCI
  • Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
  • 80GB Hitachi 7K80 SATAII
  • Pioneer DVD-RW
  • 1KW Corsair HX1000 psu
  • WinXP Pro SP3 full nLite updated hotfixes / Windows 7 beta dual boot

Memory configuration:
  • Dimm slot #1: 1GB G.Skill PC3-12800HZ (Samsung HCF0)
  • Dimm slot #2: 1GB Corsair DDR3-2133C9DF Dominator (Samsung HCF0)
  • Dimm slot #3: 1GB Cellshock PC3-14400 (Micron D9GTR)
  • Dimm slot #4: 1GB Corsair DDR3-2133C9DF Dominator (Samsung HCF0)
  • Dimm slot #5: 1GB Cellshock PC3-14400 (Micron D9GTR)
  • Dimm slot #6: 1GB G.Skill PC3-12800HZ (Samsung HCF0)





Seems with 6x1GB AUTO CMD rate = 2T, so for 1T you need to change CMD rate from AUTO to 1T (1N).

Bumped vdimm straight to 1.830v in bios and clocked 6x1GB straight up to DDR3-1606Mhz 8-8-8-24 1T to see how it runs. Everest latency speeds seem to get slower as you add more modules. So in terms of fastest everest latency the order goes = 2x1GB > 3x1GB > 6x1GB. Still 32M time with 6x1GB DDR3-1606Mhz 8-8-8-24 1T is pretty decent.

6x1GB @DDR3-1606Mhz 8-8-8-24 1T at 1.830v bios (DMM measured 1.835v real)









System: My System
CPU
i7 920 C0 and D0
Motherboard
DFI UT X58-T3EH8
Memory
Corsair Dominator GT 2000CAS7
Graphics Card
HD4870X2 CF
CPU cooling
EK Supreme LT / FESER 480
OS
WinXP Pro SP3/Vista/Win7 64bit RC
Monitor
20" BenQ FP2091 LCD
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Old 01-28-09   #2 (permalink)
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6x1GB @DDR3-1688Mhz 8-8-8-24 1T at 1.815v bios (DMM measured 1.820v real)

Bumped Bclk to 211 and reduced vdimm from 1.830v bios to 1.815v bios (DMM = 1.820v real) for DDR3-1688Mhz 8-8-8-24 1T.





Slightly faster 32M Pi times than 3x1GB D9GTR at same main timings even though below 6x1GB was done with considerably looser subtimings for tRFC, tWTP, tRRD and tFAW in bios. Will try tighter timings later.



Everest SPD and bandwidth






System: My System
CPU
i7 920 C0 and D0
Motherboard
DFI UT X58-T3EH8
Memory
Corsair Dominator GT 2000CAS7
Graphics Card
HD4870X2 CF
CPU cooling
EK Supreme LT / FESER 480
OS
WinXP Pro SP3/Vista/Win7 64bit RC
Monitor
20" BenQ FP2091 LCD
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Old 01-29-09   #3 (permalink)
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Best I can do keeping voltages the same @879Mhz 8-8-8-24 1T at 1.815v bios (1.820v real)


System: My System
CPU
i7 920 C0 and D0
Motherboard
DFI UT X58-T3EH8
Memory
Corsair Dominator GT 2000CAS7
Graphics Card
HD4870X2 CF
CPU cooling
EK Supreme LT / FESER 480
OS
WinXP Pro SP3/Vista/Win7 64bit RC
Monitor
20" BenQ FP2091 LCD
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Old 01-30-09   #4 (permalink)
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6x1GB 7-7-7-18 1T

Seems this mismatched combo does pretty well tightening both main and subtimings managing up to DDR3-1718Mhz 7-7-7-18 1T at 1.875v bios. Needed a notch or two higher vdimm when subtimings were tightened otherwise I could of lowered vdimm by ~0.25-0.30v.

System specs
  • Intel Core i7 920 3836A756
  • Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
  • DFI LP UT X58-T3EH8 R.A51 - 01/23 beta bios
  • 128MB Gainward FX5200 PCI
  • Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
  • 80GB Hitachi 7K80 SATAII
  • Pioneer DVD-RW
  • 1KW Corsair HX1000 psu
  • WinXP Pro SP3 full nLite updated hotfixes / Windows 7 beta dual boot

Memory configuration:
Super Pi 32M stable
  • DDR3-1606Mhz 7-7-7-18 1T 1.740v bios (1.745v DMM)
  • DDR3-1702Mhz 7-7-7-18 1T 1.830v bios (1.835v DMM)
  • DDR3-1718Mhz 7-7-7-18 1T 1.875v bios (1.880v DMM)

DDR3-1606Mhz 7-7-7-18 1T 1.740v bios (1.745v DMM)




DDR3-1702Mhz 7-7-7-18 1T 1.830v bios (1.835v DMM)




DDR3-1718Mhz 7-7-7-18 1T 1.875v bios (1.880v DMM)









System: My System
CPU
i7 920 C0 and D0
Motherboard
DFI UT X58-T3EH8
Memory
Corsair Dominator GT 2000CAS7
Graphics Card
HD4870X2 CF
CPU cooling
EK Supreme LT / FESER 480
OS
WinXP Pro SP3/Vista/Win7 64bit RC
Monitor
20" BenQ FP2091 LCD
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Old 01-30-09   #5 (permalink)
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More stress on the northbridge means more voltage needed to keep all that RAM in check.

Still, nice screens + testing. 1.87v IS alot though...
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System: Blackbox.
CPU
Q6600 stock
Motherboard
ASUS P5Q Pro
Memory
4x2GB G.Skill 800Mhz 5-5-5-15
Graphics Card
Sapphire 4870 1GB
Hard Drive
250GB & 4x 640GB in Raid5
Sound Card
Realtek ALC1200 Onboard
Power Supply
PC Power & Cooling S75QB
Case
Antec Twelve Hundred
CPU cooling
TRUE w\ Sythe Ultra Kaze (3k RPM)
GPU cooling
Stock.
OS
Vista 64-Bit
Monitor
22'' Samsung 226BW & 17'' CMV 1280x1024
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Old 02-01-09   #6 (permalink)
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Yeah it's all about voltages hehe

Max 6x1GB 8-8-8-24 1T Clocks

Changing to 10x memory multiplier, tried to find max 6x1GB 8-8-8-24 1T clocks and ended up with DDR3-2000Mhz 8-8-8-24 1T at 2.04v bios (2.045v real) only for tried 1M Super Pi as 32M Pi test failed. I dropped bclk and mem clocks to DDR3-1960Mhz 8-8-8-24 1T at same vdimm but Super Pi 32M failed at 22nd iteration. Similar trend occured at DDR3-1940mhz as well.

I recall it's probably the Cellshock PC3-14400 Micron D9GTR holding the 6x1GB modules back as it needed more vdimm for do such clocks even on P35/X48 DDR3 boards closer to 2.1+ volts for around DDR3-1920 8-8-8-x. Decided to stop there as unnecessary stress to i7 IMC ain't needed when I shall have some nice DDR3-2000 CAS7 rated triple channel memory due my way this coming week

System specs
  • Intel Core i7 920 3836A756
  • Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
  • DFI LP UT X58-T3EH8 R.A51 - 01/23 beta bios
  • 128MB Gainward FX5200 PCI
  • Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
  • 80GB Hitachi 7K80 SATAII
  • Pioneer DVD-RW
  • 1KW Corsair HX1000 psu
  • WinXP Pro SP3 full nLite updated hotfixes / Windows 7 beta dual boot

Memory configuration:
6x1GB Samsung HCF0 + Micron D9GTR @8-8-8-24 1T at 2.04v bios (2.045v DMM real)





Super Pi 1M = 10.140s



Super Pi 32M failed at 22nd loop @DDR3-1960Mhz 8-8-8-24 1T


System: My System
CPU
i7 920 C0 and D0
Motherboard
DFI UT X58-T3EH8
Memory
Corsair Dominator GT 2000CAS7
Graphics Card
HD4870X2 CF
CPU cooling
EK Supreme LT / FESER 480
OS
WinXP Pro SP3/Vista/Win7 64bit RC
Monitor
20" BenQ FP2091 LCD
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