Corsair Dominator GT + Asus P6T6 WS Revolution

[eva2000]

With 6GB Corsair Dominator GT 2000 7-8-7-20 kit of memory I never got to try looser 8-9-8-x timings much with DFI UT X58-T3EH8. So now on Asus P6T6 WS Revolution, will try 8-9-8-22 2T timings to see how much further I can push memory.

System:

• Intel Xeon W3540 3845B010
• EK Supreme LT 1366 / FESER 480 / MCP655
• Asus P6T6 WS Revolution
• 6GB Corsair Dominator GT 2000 7-8-7-20
• 512MB Inno3D 8800GT OC Edition 190.62WHQL
• 750GB Samsung SATA
• Pioneer DVR-217 DVD-RW
• Corsair HX1000 PSU
• WinXP Pro SP3 (nLite fully updated) with Vista Theme

Max Validation @DDR3-2280Mhz 8-9-8-22 2T at 1.90v

Used TurboV to push mem to DDR3-2320Mhz but couldn't save the CPUZ Validation files heh. Will try again for next session

QPI/DRAM (Uncore = CPU VTT) = 1.650v
Uncore frequency = 4560Mhz

[eva2000]

Max Super Pi 1M @DDR3-2268Mhz 8-9-8-22 2T at 1.90v

QPI/DRAM (Uncore = CPU VTT) = 1.6375v



Max Super Pi 32M @DDR3-2220Mhz 8-9-8-22 2T at 1.90v

QPI/DRAM (Uncore = CPU VTT) = 1.6375v

[boblemagnifique]

Nice overclocking georges

[ProStock]

Great result EVA2000 just a quick Q: did you use the Ice T30 to achive these amazing speed thx

PS: did you make a review of the Ice T30 ?

[eva2000]

Nice overclocking georges

Thanks

Great result EVA2000 just a quick Q: did you use the Ice T30 to achive these amazing speed thx

PS: did you make a review of the Ice T30 ?

no Ice T30 yet as too humid here even in winter. i.e. right now it's 1:35am here and room temp is at 28.5C with 65-75% humidity LOL

Ram cooled by 3x60x25mm sunon 23.5cfm maglev fans

[eva2000]

Took a side by side screenshot of my 12x mem multi DDR3-2184Mhz 7-8-7-20 1T 32M run versus my 10x mem multi higher cpu clocked DDR3-2118Mhz 7-8-7-20 1T 32M run to see what cputweaker reported for my subtimings. See if any subtiming settings are a factor.



DDR3-2184Mhz (12x mem) vs DDR3-2118Mhz (10x mem)

• QPI/DRAM volts = 1.55v vs 1.6375v due to lower bclk needed on 12x mem config
• tRFC = 110 vs 88 could be a factor ?
• tRRD = 7 vs 7 both same
• tREFI = 955 vs 849
• tFAW = 37 vs 33
• tRTL A channel = 56 vs 57
• tWTP = 27 vs 26
• tRTP = 7 vs 6
• Write to Read (same rank) = 20 vs 19

Going to play with subtimings and see

Update: Dropped cpu multiplier to 19x and using 10x memory multiplier, will try to reproduce similar looser subtimings as used in my DDR3-2184Mhz 7-8-7-20 1T run with 12x memory multiplier. I managed to get as far as Super Pi 32M stable @DDR3-2188Mhz 7-8-7-20 1T at 1.84v vdimm

Manually set following subtiming values in bios:

• tRFC = 110
• tFAW = 37
• Back to Back CAS# Delay = 4 (tightened to try and offset loosened tRFC value)
• Write to Read (same rank) = 20

Super Pi 32M passed at:

• DDR3-2158Mhz 7-8-7-20 1T at 1.72v
• DDR3-2167Mhz 7-8-7-20 1T at 1.78v
• DDR3-2177Mhz 7-8-7-20 1T at 1.80v
• DDR3-2188Mhz 7-8-7-20 1T at 1.84v

DDR3-2158Mhz 7-8-7-20 1T at 1.72v


DDR3-2167Mhz 7-8-7-20 1T at 1.78v


DDR3-2177Mhz 7-8-7-20 1T at 1.80v


DDR3-2188Mhz 7-8-7-20 1T at 1.84v

[eva2000]

Yay it pays to figure out optimal settings for memory = higher cpu clocks

Super Pi 1M @4759Mhz



Super Pi 1M & 32M @4702Mhz

[George_o/c]

Nice work George, and at considerably low voltage

[KILLER_K]

Looking good no doubt, great work. And thanks for sharing your info on them.

[eva2000]

Nice work George, and at considerably low voltage

thanks

Looking good no doubt, great work. And thanks for sharing your info on them.

you're welcome.. hopefully i can at least beat my Xeon W3520's max 32M on H20 cooling @4794mhz 7min 24s hehe

[clon22]

Neat results there!
Nice work George.
U should try putting this chip of yours under cold some time.

[Amey]

Sweet stuff Eva
You sure have a lot of patience, I admire that

[eva2000]

thanks - been playing with mixed 6x2GB = 12GB too http://i4memory.com/showthread.php?t=18879

Neat results there!
Nice work George.
U should try putting this chip of yours under cold some time.

yeah planning to get kayl to build me a new strong phase change unit with 1156/1366 mounts hehe