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4GB A-DATA 2000X + DFI DK P55-T3EH9 @8-9-8-24/27 1T

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eva2000

Member
Joined
Aug 5, 2002
Location
Brisbane, Australia



tt81cfm.jpg





System:
  • Intel i5 750 L925B626
  • Corsair H50-1 s1156 H20 + stock 59cfm Corsair fan (pump on cpu fan header, fan on cpu_pwm fan header)
  • DFI LP DK P55-T3EH9 12/08 beta bios
  • 128MB Gainward FX5200 PCI video card to start with
  • 2x2GB A-DATA 2000X dual channel kit #4 (modules 7+8)
  • 640GB Samsung SATA
  • Pioneer DVD-R
  • 1KW PC&C Quad SLI psu
  • Additional cooling: 120x25mm Spire 75cfm fan over cpu socket/pwm area and 60x25mm Sunon 23.5cfm fan over PCH chipset heatsink

4GB A-DATA 2000X Kit #4
CAS 8 Overclocking Tests - Round 1
For CAS8 clocks on kit #4 definitely better than kit #5. But still DDR3-2000Mhz 8-8-8-24 1T has minor errors on DFI DK P55-T3EH9 even though same kit #4 on Asus P6T6 WS Revolution did DDR3-2000Mhz 7-8-7-24 1T at 1.58v ??? Weird ? Could be board/bios related or just my i5 750 doesn't like 7-8-7-24 on these modules than much ?

Strangely for kit #4 finding 8-9-8-24 clocks a bit easier to clock than 9-9-9-24 ?

2x2GB A-DATA 2000X dual channel Kit #5 modules 9+10
  • on Asus P6T6 WS Revolution did DDR3-2000Mhz 7-9-7-24 1T at 1.60v
  • on DFI DK P55-T3EH9 does
    • DDR3-2000Mhz 8-9-8-24 1T at 1.264v CPU VTT at 1.66v (4x 32M) - loosen tRFC 110 and tFAW 37 and tRRD 5
    • DDR3-2168Mhz 8-9-8-24 1T at 1.342v CPU VTT at 1.78v (single 32M) - loosen tRFC 110 and tFAW 37 and tRRD 5

2x2GB A-DATA 2000X dual channel Kit #4 modules 7+8
  • on Asus P6T6 WS Revolution did DDR3-2000Mhz 7-8-7-24 1T at 1.58v
  • on DFI DK P55-T3EH9 kit #4 scales with just CPU VTT more than Kit #5
    • DDR3-2008Mhz 8-9-8-24 1T at 1.264v CPU VTT at 1.58v (4x 32M) - tRFC 74 and tFAW 20
    • DDR3-2108Mhz 8-9-8-24 1T at 1.282v CPU VTT at 1.66v (4x 32M) - tRFC 74 and tFAW 20
    • DDR3-2194Mhz 8-9-8-24 1T at 1.282v CPU VTT at 1.70v (4x 32M) - tRFC 88 and tFAW 30
    • DDR3-2247Mhz 8-9-8-27 1T at 1.392v CPU VTT at 1.72v (1M) - tRFC 124 tFAW 39
    • DDR3-2274Mhz 8-9-8-27 1T at 1.392v CPU VTT at 1.72v (CPUZ Validation) - tRFC 124 tFAW 39

DDR3-2008Mhz 8-9-8-24 1T at 1.58v

Super Pi 32M, HyperPi 4x32M, Everest and added MaxPi multi

spi32m_9m06s188ms.png


hpi32m_4.png


everest.png


maxpimulti_588.png
 
DDR3-2274Mhz 8-9-8-27 1T at 1.72v
Loosened timings alot more, pushed voltages a bit more and dropped QPI frequency from 4.8GT/s (18x multi) to 4.27GT/s (16x multi) to achieve my highest frequency so far for bclk 227bclk as well as for memory frequency @DDR3-2274Mhz 8-9-8-27 1T at 1.72v validation and @DDR3-2247Mhz 8-9-8-27 1T at 1.72v for Super Pi 1M.






spi1m_10s328ms.png


everest.png
 
4GB A-DATA 2000X Kit #4
CAS 7 Overclocking Tests - Round 1
Now to CAS7 timings for 2nd kit #4. The same trend continues, kit #4 has better CAS7 overclocking headroom than kit #5. Goes to show not all memory are created equal :)

Kit #4 managed DDR3-1948Mhz 7-8-7-24 1T at same settings and same 1.70v vdimm which is much higher than Kit #5's max DDR3-1834Mhz 7-8-7-24 1T at 1.70v. But kit #4 like kit #5 didn't scale any higher with loosened tRCD of 9 or 10 (7-9-7-24 or 7-10-7-24).

System:
  • Intel i5 750 L925B626
  • Corsair H50-1 s1156 H20 + stock 59cfm Corsair fan (pump on cpu fan header, fan on cpu_pwm fan header)
  • DFI LP DK P55-T3EH9 12/08 beta bios
  • 128MB Gainward FX5200 PCI video card to start with
  • 2x2GB A-DATA 2000X dual channel kit #4 (modules 7+8)
  • 640GB Samsung SATA
  • Pioneer DVD-R
  • 1KW PC&C Quad SLI psu
  • Additional cooling: 120x25mm Spire 75cfm fan over cpu socket/pwm area and 60x25mm Sunon 23.5cfm fan over PCH chipset heatsink

2x2GB A-DATA 2000X dual channel Kit #5 modules 9+10
  • on Asus P6T6 WS Revolution did DDR3-2000Mhz 7-9-7-24 1T at 1.60v
  • on DFI DK P55-T3EH9 does
    • DDR3-1834Mhz 7-8-7-24 1T at 1.296v CPU VTT at 1.70v (1x 32M) - loosen tRFC 110 and tFAW 33

2x2GB A-DATA 2000X dual channel Kit #4 modules 7+8
  • on Asus P6T6 WS Revolution did DDR3-2000Mhz 7-8-7-24 1T at 1.58v
  • on DFI DK P55-T3EH9 kit #4 scales with just CPU VTT more than Kit #5
    • DDR3-1948Mhz 7-8-7-24 1T at 1.264v CPU VTT at 1.70v (4x 32M) - tRFC 110 and tFAW 33

hpi32m_4.png


spi32m_9m21s422ms.png


maxpi_571.png


maxmem_everest.png
 
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