Started overclocking. Says system memory speed 1066?

NikonGuy

NikonGuy

banned
I have 8gb DDr3 1866 ram. It even says so in my BIOS. However I just started overclocking a bit, and I got this system monitor program from AMD which I thought I would use to monitor the CPU overclocking. It also has a memory thing, and it says system memory speed 1066?? I was just in the bios and it even said its RUNNING at 1866. So whats going on?
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Have you tried other system info programs to check how they read the ram speed.

Also have you set the memory to a specific speed in the bios.
 
Download and run cpuz and see what it says. You may have to enable xmp setting in the bios.
 
CPUz says NB frequency: 2167.1Mhz
DRAM Frequency 577.9 Mhz

and under SPD under timings table it says Frequency: 837 Mhz 1 box and in the other 3 boxes it says 888Mhz. Here is the info saved in txt:


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

DIMM # 1
SMBus address 0x50
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Kingston (7F980000000000000000)
Size 4096 MBytes
Max bandwidth PC3-14200 (889 MHz)
Part number KHX1866C10D3/4G
Serial number 4D0F3169
Manufacturing date Week 32/Year 14
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 5.0-6-5-15-21 @ 465 MHz
JEDEC #2 6.0-7-6-18-25 @ 558 MHz
JEDEC #3 7.0-8-7-21-30 @ 651 MHz
JEDEC #4 8.0-9-8-24-34 @ 744 MHz
JEDEC #5 9.0-10-10-27-38 @ 837 MHz
JEDEC #6 10.0-11-10-29-40 @ 888 MHz
JEDEC #7 11.0-11-10-29-40 @ 888 MHz
JEDEC #8 13.0-11-10-29-40 @ 888 MHz

DIMM # 2
SMBus address 0x52
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Kingston (7F980000000000000000)
Size 4096 MBytes
Max bandwidth PC3-14200 (889 MHz)
Part number KHX1866C10D3/4G
Serial number 4F0F1469
Manufacturing date Week 32/Year 14
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 5.0-6-5-15-21 @ 465 MHz
JEDEC #2 6.0-7-6-18-25 @ 558 MHz
JEDEC #3 7.0-8-7-21-30 @ 651 MHz
JEDEC #4 8.0-9-8-24-34 @ 744 MHz
JEDEC #5 9.0-10-10-27-38 @ 837 MHz
JEDEC #6 10.0-11-10-29-40 @ 888 MHz
JEDEC #7 11.0-11-10-29-40 @ 888 MHz
JEDEC #8 13.0-11-10-29-40 @ 888 MHz

DIMM # 1
SPD registers
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 92 11 0B 02 04 21 00 01 03 11 01 08 09 00 FE 02
10 56 78 5E 28 56 11 01 66 20 08 3C 3C 00 D8 83 01
20 00 00 CA CE 1F CE CE 00 00 00 00 00 00 00 00 00
30 00 00 00 00 00 00 00 00 00 00 00 00 0F 11 20 00
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 07 14 32 4D 0F 31 69 E6 94
80 4B 48 58 31 38 36 36 43 31 30 44 33 2F 34 47 20
90 20 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
C0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
D0 00 00 00 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 11 0B 02 04 21 00 01 03 11 01 08 09 00 FE 02
10 56 78 5E 28 56 11 01 66 20 08 3C 3C 00 D8 83 01
20 00 00 CA CE 1F CE CE 00 00 00 00 00 00 00 00 00
30 00 00 00 00 00 00 00 00 00 00 00 00 0F 11 20 00
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 07 14 32 4F 0F 14 69 E6 94
80 4B 48 58 31 38 36 36 43 31 30 44 33 2F 34 47 20
90 20 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
C0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
D0 00 00 00 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
 
Something like CPU-Z lists 'actual' speed instead of 'effective' speed.

So, something like "DDR3 2133" actually runs at 1066 MHz, but the Double Data Rate mechanism means it can transfer effectively at double that, which is 2133.
 
NikonGuy said:
I have 8gb DDr3 1866 ram. It even says so in my BIOS. However I just started overclocking a bit, and I got this system monitor program from AMD which I thought I would use to monitor the CPU overclocking. It also has a memory thing, and it says system memory speed 1066?? I was just in the bios and it even said its RUNNING at 1866. So whats going on?
Click to expand...

How are you overclocking, by the multiplier or bus? It looks like you have fooled with the bus. A lot of AMD boards will boot memory to 1066 by default. You would have to go into the bios and manually set it to 1866 or 933, which ever way its listed.


NikonGuy said:
CPUz says NB frequency: 2167.1Mhz
DRAM Frequency 577.9 Mhz

and under SPD under timings table it says Frequency: 837 Mhz 1 box and in the other 3 boxes it says 888Mhz. Here is the info saved in txt:
Click to expand...


If it listed as 577.9 under DRAM Frequency. Its running at 1155. Like said the SPD listing in CPUZ is just what it can run at under JEDEC standards, not what its really running at. Under the memory tab, the DRAM Frequency is what's its really running at.
 
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