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TOPIC: 996988 PC3L-12800 kit

996988 PC3L-12800 kit 3 months 3 weeks ago #2273

  • Ross
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Hi.

I recently upgraded from 8GB of 996988 to 16GB of 996988.

CPU-Z is telling me that my new RAM running in slots #2 & #4 has Max Bandwith of PC3-10700 (667MHz). I would have expected PC3-12800 (800Mhz) like my existing RAM.

Checked my BIOS (MB: ASUS Sabertooth P67, latest BIOS) and the memory is set to run at 1600MHz.

Where have I gone wrong? Could slots #2 & #4 be failing to apply XMP settings? I have included the report below.

Any help would be appreciated... :huh:

Ross

Memory SPD

DIMM # 1
SMBus address 0x50
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Mushkin (7F7F7F9400000000)
Size 4096 MBytes
Max bandwidth PC3-12800 (800 MHz)
Part number 991988 (996988)
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 5.0-5-5-14-19 @ 380 MHz
JEDEC #2 6.0-6-6-16-22 @ 457 MHz
JEDEC #3 7.0-7-7-19-26 @ 533 MHz
JEDEC #4 8.0-8-8-22-30 @ 609 MHz
JEDEC #5 9.0-9-9-24-33 @ 685 MHz
JEDEC #6 10.0-10-10-27-37 @ 761 MHz
JEDEC #7 11.0-11-11-28-39 @ 800 MHz
XMP profile XMP-1600
Specification PC3-12800H
Voltage level 1.350 Volts
Min Cycle time 1.250 ns (800 MHz)
Max CL 9.0
Min tRP 11.25 ns
Min tRCD 11.25 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 41.25 ns
Min tRFC 260.00 ns
Min tRTP 7.50 ns
Min tRRD 6.25 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-16-22-n.a @ 533 MHz (1.350 Volts)
XMP #2 9.0-9-9-24-33-n.a @ 800 MHz (1.350 Volts)

DIMM # 2
SMBus address 0x51
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Mushkin (7F7F7F9400000000)
Size 4096 MBytes
Max bandwidth PC3-10700 (667 MHz)
Part number 991988 (996988)
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
AMP no
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 9.0-9-9-24-33 @ 666 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.350 Volts
Min Cycle time 1.250 ns (800 MHz)
Max CL 9.0
Min tRP 11.25 ns
Min tRCD 11.25 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 41.25 ns
Min tRFC 160.00 ns
Min tRTP 7.50 ns
Min tRRD 6.25 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-16-22-n.a @ 533 MHz (1.350 Volts)
XMP #2 9.0-9-9-24-33-n.a @ 800 MHz (1.350 Volts)

DIMM # 3
SMBus address 0x52
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Mushkin (7F7F7F9400000000)
Size 4096 MBytes
Max bandwidth PC3-12800 (800 MHz)
Part number 991988 (996988)
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 5.0-5-5-14-19 @ 380 MHz
JEDEC #2 6.0-6-6-16-22 @ 457 MHz
JEDEC #3 7.0-7-7-19-26 @ 533 MHz
JEDEC #4 8.0-8-8-22-30 @ 609 MHz
JEDEC #5 9.0-9-9-24-33 @ 685 MHz
JEDEC #6 10.0-10-10-27-37 @ 761 MHz
JEDEC #7 11.0-11-11-28-39 @ 800 MHz
XMP profile XMP-1600
Specification PC3-12800H
Voltage level 1.350 Volts
Min Cycle time 1.250 ns (800 MHz)
Max CL 9.0
Min tRP 11.25 ns
Min tRCD 11.25 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 41.25 ns
Min tRFC 260.00 ns
Min tRTP 7.50 ns
Min tRRD 6.25 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-16-22-n.a @ 533 MHz (1.350 Volts)
XMP #2 9.0-9-9-24-33-n.a @ 800 MHz (1.350 Volts)

DIMM # 4
SMBus address 0x53
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Mushkin (7F7F7F9400000000)
Size 4096 MBytes
Max bandwidth PC3-10700 (667 MHz)
Part number 991988 (996988)
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
AMP no
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 9.0-9-9-24-33 @ 666 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.350 Volts
Min Cycle time 1.250 ns (800 MHz)
Max CL 9.0
Min tRP 11.25 ns
Min tRCD 11.25 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 41.25 ns
Min tRFC 160.00 ns
Min tRTP 7.50 ns
Min tRRD 6.25 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-16-22-n.a @ 533 MHz (1.350 Volts)
XMP #2 9.0-9-9-24-33-n.a @ 800 MHz (1.350 Volts)
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996988 PC3L-12800 kit 3 months 3 weeks ago #2274

  • MushkinSean
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Hi,

CPU-Z is displaying what is programed to the modules for SPDs. That does not mean that is what the memory is running at
The XMP on all 4 sticks is PC3-12800 (DDR3-1600)

To see what the memory is currently running at you need to check the memory tab of CPU-Z, it should list the DRAM frequency as 800MHz. Which is DDR3-1600 (DDR = Double Data Rate)

All the memory in a system runs at the same speed.
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