RAM MHZ question

[pcjoseph1974]

I have a ASUS P6t V2 DELUZ and Im running a i7 920 with Kingston 1600mhz memory. I seem to be only getting 800mhz out of it. Im posting a dialogue of what my computer says. Can someone help me interpret this? Ice used CUP-Z and cut out all the other info.

Thanks

Processor 1         ID = 0
   Number of cores      4 (max
   Number of threads   8 (max 16)
   Name         Intel Core i7 920
   Codename      Bloomfield
   Specification      Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz

Chipset
-------------------------------------------------------------------------

Northbridge         Intel X58 rev. 12
Southbridge         Intel 82801JR (ICH10R) rev. 00
Graphic Interface      PCI-Express
PCI-E Link Width      x16
PCI-E Max Link Width      x16
Memory Type         DDR3
Memory Size         6144 MBytes
Channels         Triple
Memory Frequency      803.3 MHz (2:12)
CAS# latency (CL)      9.0
RAS# to CAS# delay (tRCD)   9
RAS# Precharge (tRP)      9
Cycle Time (tRAS)      24
Row Refresh Cycle Time (tRFC)   88
Command Rate (CR)      1T
Uncore Frequency      3213.3 MHz

Memory SPD
-------------------------------------------------------------------------

DIMM #            1
   SMBus address      0x50
   Memory type      DDR3
   Module format      UDIMM
   Manufacturer (ID)   Kingston (7F98000000000000)
   Size         2048 MBytes
   Max bandwidth      PC3-10700 (667 MHz)
   Part number      9905403-084.A01LF
   Serial number      912B7E39
   Manufacturing date   Week 16/Year 10
   Number of banks      8
   Nominal Voltage      1.50 Volts
   EPP         no
   XMP         yes
   XMP revision      1.2
JEDEC timings table      CL-tRCD-tRP-tRAS-tRC @ frequency
   JEDEC #1      6.0-6-6-17-23 @ 457 MHz
   JEDEC #2      7.0-7-7-20-27 @ 533 MHz
   JEDEC #3      8.0-8-8-22-30 @ 609 MHz
   JEDEC #4      9.0-9-9-25-34 @ 685 MHz
XMP profile         XMP-1600
   Specification      PC3-12800
   Voltage level      1.650 Volts
   Min Cycle time      1.250 ns (800 MHz)
   Min tRP         11.25 ns
   Min tRCD      11.25 ns
   Min tWR         15.00 ns
   Min tRAS      33.75 ns
   Min tRC         45.00 ns
   Min tRFC      110.00 ns
   Min tRTP      7.50 ns
   Min tRRD      6.00 ns
XMP timings table      CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
   XMP #1         6.0-6-6-18-24-0T @ 533 MHz (1.650 Volts)
   XMP #2         7.0-7-7-21-28-0T @ 622 MHz (1.650 Volts)
   XMP #3         8.0-8-8-24-32-0T @ 711 MHz (1.650 Volts)
   XMP #4         9.0-9-9-27-36-0T @ 800 MHz (1.650 Volts)

DIMM #            2
   SMBus address      0x52
   Memory type      DDR3
   Module format      UDIMM
   Manufacturer (ID)   Kingston (7F98000000000000)
   Size         2048 MBytes
   Max bandwidth      PC3-10700 (667 MHz)
   Part number      9905403-084.A01LF
   Serial number      912B7008
   Manufacturing date   Week 16/Year 10
   Number of banks      8
   Nominal Voltage      1.50 Volts
   EPP         no
   XMP         yes
   XMP revision      1.2
JEDEC timings table      CL-tRCD-tRP-tRAS-tRC @ frequency
   JEDEC #1      6.0-6-6-17-23 @ 457 MHz
   JEDEC #2      7.0-7-7-20-27 @ 533 MHz
   JEDEC #3      8.0-8-8-22-30 @ 609 MHz
   JEDEC #4      9.0-9-9-25-34 @ 685 MHz
XMP profile         XMP-1600
   Specification      PC3-12800
   Voltage level      1.650 Volts
   Min Cycle time      1.250 ns (800 MHz)
   Min tRP         11.25 ns
   Min tRCD      11.25 ns
   Min tWR         15.00 ns
   Min tRAS      33.75 ns
   Min tRC         45.00 ns
   Min tRFC      110.00 ns
   Min tRTP      7.50 ns
   Min tRRD      6.00 ns
XMP timings table      CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
   XMP #1         6.0-6-6-18-24-0T @ 533 MHz (1.650 Volts)
   XMP #2         7.0-7-7-21-28-0T @ 622 MHz (1.650 Volts)
   XMP #3         8.0-8-8-24-32-0T @ 711 MHz (1.650 Volts)
   XMP #4         9.0-9-9-27-36-0T @ 800 MHz (1.650 Volts)

DIMM #            3
   SMBus address      0x54
   Memory type      DDR3
   Module format      UDIMM
   Manufacturer (ID)   Kingston (7F98000000000000)
   Size         2048 MBytes
   Max bandwidth      PC3-10700 (667 MHz)
   Part number      9905403-084.A01LF
   Serial number      922B7B39
   Manufacturing date   Week 16/Year 10
   Number of banks      8
   Nominal Voltage      1.50 Volts
   EPP         no
   XMP         yes
   XMP revision      1.2
JEDEC timings table      CL-tRCD-tRP-tRAS-tRC @ frequency
   JEDEC #1      6.0-6-6-17-23 @ 457 MHz
   JEDEC #2      7.0-7-7-20-27 @ 533 MHz
   JEDEC #3      8.0-8-8-22-30 @ 609 MHz
   JEDEC #4      9.0-9-9-25-34 @ 685 MHz
XMP profile         XMP-1600
   Specification      PC3-12800
   Voltage level      1.650 Volts
   Min Cycle time      1.250 ns (800 MHz)
   Min tRP         11.25 ns
   Min tRCD      11.25 ns
   Min tWR         15.00 ns
   Min tRAS      33.75 ns
   Min tRC         45.00 ns
   Min tRFC      110.00 ns
   Min tRTP      7.50 ns
   Min tRRD      6.00 ns
XMP timings table      CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
   XMP #1         6.0-6-6-18-24-0T @ 533 MHz (1.650 Volts)
   XMP #2         7.0-7-7-21-28-0T @ 622 MHz (1.650 Volts)
   XMP #3         8.0-8-8-24-32-0T @ 711 MHz (1.650 Volts)
   XMP #4         9.0-9-9-27-36-0T @ 800 MHz (1.650 Volts)

DIMM #            1
SPD registers   
      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
   00   92 10 0B 02 02 11 00 09 03 52 01 08 0C 00 3C 00
   10   69 78 69 30 69 11 20 89 70 03 3C 3C 00 F0 83 81
   20   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   30   00 00 00 00 00 00 00 00 00 00 00 00 0F 11 01 01
   40   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   50   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   60   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   70   00 00 00 00 00 01 98 04 10 16 91 2B 7E 39 AB A7
   80   39 39 30 35 34 30 33 2D 30 38 34 2E 41 30 31 4C
   90   46 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   A0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   B0   0C 4A 01 12 01 08 00 00 00 2D 0A 5A 3C 00 50 5A
   C0   5A 78 11 0E 68 3F 00 70 03 3C 30 00 F0 3C 00 00
   D0   00 00 28 00 00 00 00 00 00 00 00 00 00 00 00 00
   E0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   F0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 5A

DIMM #            2
SPD registers   
      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
   00   92 10 0B 02 02 11 00 09 03 52 01 08 0C 00 3C 00
   10   69 78 69 30 69 11 20 89 70 03 3C 3C 00 F0 83 81
   20   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   30   00 00 00 00 00 00 00 00 00 00 00 00 0F 11 01 01
   40   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   50   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   60   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   70   00 00 00 00 00 01 98 04 10 16 91 2B 70 08 AB A7
   80   39 39 30 35 34 30 33 2D 30 38 34 2E 41 30 31 4C
   90   46 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   A0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   B0   0C 4A 01 12 01 08 00 00 00 2D 0A 5A 3C 00 50 5A
   C0   5A 78 11 0E 68 3F 00 70 03 3C 30 00 F0 3C 00 00
   D0   00 00 28 00 00 00 00 00 00 00 00 00 00 00 00 00
   E0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   F0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 5A

DIMM #            3
SPD registers   
      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
   00   92 10 0B 02 02 11 00 09 03 52 01 08 0C 00 3C 00
   10   69 78 69 30 69 11 20 89 70 03 3C 3C 00 F0 83 81
   20   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   30   00 00 00 00 00 00 00 00 00 00 00 00 0F 11 01 01
   40   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   50   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   60   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   70   00 00 00 00 00 01 98 04 10 16 92 2B 7B 39 AB A7
   80   39 39 30 35 34 30 33 2D 30 38 34 2E 41 30 31 4C
   90   46 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   A0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   B0   0C 4A 01 12 01 08 00 00 00 2D 0A 5A 3C 00 50 5A
   C0   5A 78 11 0E 68 3F 00 70 03 3C 30 00 F0 3C 00 00
   D0   00 00 28 00 00 00 00 00 00 00 00 00 00 00 00 00
   E0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
   F0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 5A


Monitoring
-------------------------------------------------------------------------

Mainboard Model      P6T DELUXE V2 (0x00000369 - 0x48BB1AF2



Thanks,

Patrick

[patio]

Your MBoard has a bus speed of 800MHZ...
Therefore that is what speed the RAM will run at even thought the RAM's speed is 1600MHZ.

[Calum]

The RAM is DDR - double data rate.  Well, DDR3, but the number isn't important for this.  DDR means that your RAM is running at a clock speed of 800MHz, doubled to 1600.
In other words, this is normal.
Hope this helps.

[pcjoseph1974]

Im trying buffalo firestick inferno 1600mhz 7-7-7-20 downclocked to 1066mhz 7-7-7-20 at 1.65v because it needs 2.1v to run at 1600mhz. The rig is performing better than with kingston 1600mhz 9-9-9-24. Does this sound right?

[Calum]

Performng better, as determined by what?

[pcjoseph1974]

well, im measuring that subjectively, im simply determining that by its performance in .,....games. It seems smoother and has a  generally higher frame rate.

[Tim_Cdy]

Well, looser or tighter timings are difficult to state what is best. Depends on what CPU and how as model that performs for you. Tighter timings allow less time for instrutions in Ram to be processed on the rise and fall. IE forced through with the minimum of CC's used.

Or you loosen the timings for more breathing room. Will take an extra cycle or two but usually unnoticeable as it were. Normal practise would be to loosen the timings and tighten up when you are trying to find the sweet spot for system operation

[Calum]

well, im measuring that subjectively, im simply determining that by its performance in .,....games. It seems smoother and has a  generally higher frame rate.

You're the only person I know that can see the difference in gaming.  Hey, if it works for you ...

Timings and clock speed is a tradeoff.  Both affect latency and bandwidth.  There are very few times that either will have a noticeable affect.