PC doesn't boot or not stable when changing ram settings in BIOS for OCZ3G13332G

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BlackEdition720

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I believe ocz3g13332g is supposed to be 1333 ram but why is it showing up at 1066 in bios?

Refer to this CPU-Z and let me know if there are certain settings i'm suppose to use or are these not 1333 ram at all?


The motherboard is a GIGABYTE GA-MA770T-UD3P if that matters.
CPU is an AMD Phenom II X3 720 with 4th core unlocked.

Let me know what bio settings I should have in order to get a stable system.
 
Solution
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OCZ module part number OCZ3G13332G is rated at 1333 MHz.

Download and install HWiNFO64 or HWiNFO32.

Start HWiNFO and select Summary only check box. Then click Run.

Settings for running the memory should be displayed to the right side of the box. Note voltage and timings for 1333 MHz (666 MHz) operation.

Boot into BIOS and set DRAM Voltage, Memory Clock frequency, and DDR3 Timings to that noted above.
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i7Baby

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brispuss

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OCZ module part number OCZ3G13332G is rated at 1333 MHz.

Download and install HWiNFO64 or HWiNFO32.

Start HWiNFO and select Summary only check box. Then click Run.

Settings for running the memory should be displayed to the right side of the box. Note voltage and timings for 1333 MHz (666 MHz) operation.

Boot into BIOS and set DRAM Voltage, Memory Clock frequency, and DDR3 Timings to that noted above.
 
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BlackEdition720

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I do not see any voltage and timings for 1333 using HWiNFO64.

i see

533.3 7-7-7-16-27 and 1.50 V
466.7 7-7-7-15-24 - 1.50V
400.0 6-6-6-12-20 - 1.50V
333.3 5-5-5-10-17 - 1.50V

Does this mean the max I can reach is 533.3 which is 1066?
 
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brispuss

Splendid
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That is unusual! DIMM's should have data in the SPD chip for the DIMM's rated frequency (in this case here, there is supposed to be a listing for 1333 MHz (666 MHz))!?

From details in earlier post and elsewhere, try setting timings to 9-9-9-20-33 (CAS-T[sub]RCD[/sub]-T[sub]RP[/sub]-T[sub]RAS[/sub]-T[sub]RC[/sub]), and voltage to 1.70 V @ 1333 MHz. If still have problems increase voltage to 1.75 V.

Note: CAS = CAS Latency; T[sub]RCD[/sub] = RAS to CAS Delay; T[sub]RP[/sub] = Row Precharge; T[sub]RAS[/sub] = Minimum RAS Active; T[sub]RC[/sub] = Row Cycle.
 
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brispuss

Splendid
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Are both 2 GB OCZ DIMM's definitely part number OCZ3G13332G?

The SPD data from CPU-Z and HWiNFO64 suggest the memory is rated for 1066 MHz (533 MHz), which seems to contradict the part number which specifies memory frequency rating of 1333 MHz (666 MHz). As stated before, it is unusual NOT to have SPD data for memory rated frequency. If the DIMM's are rated at 1333 MHz then there should be an entry in SPD for that speed (666 MHz).

A remote possibility is that the DIMM's may be mislabeled?

And as per above post, are these modules from the same dual channel kit, or are they separately purchased modules? If separate modules, then there is the possibility that the two modules may not work together properly due to variations in memory chip characteristics. Dual channel kit modules are guaranteed to be compatible due to same or very similar characteristics.

Clear CMOS. Could try ONE DIMM at a time and in different slots if necessary and see if ONE of these modules runs at 1333 MHz (stably). If both modules seem to run OK by themselves at 1333 MHz, then try both modules. With Memory voltage at 1.7 or 1.75 V, this time increase DDR VTT Voltage to at least 1.0 V. If already around this voltage increase it by 0.05 V and keep increasing if necessary for each attempt up to 1.30 V maximum.
 
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BlackEdition720

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Yes these are bought together in a kit.

That's what I initially thought. The max bandwidth section on CPU-Z states it is PC3-8500 (533mhz) but the part number is OCZ3G13332G which should be 1333? This is the same for both slots.
 
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brispuss

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Dec 27, 2014
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On further research, the label on the OCZ DIMM's should also state the timings for running at 1333 MHz. But there seems to be some discrepancy in timings quoted for these DIMM's. Some say 9-9-9-20, others (and some photos) say 9-9-9-26. Look at the DIMM label and confirm required timings. They should be either 9-9-9-20 or 9-9-9-26 at 1333 MHz.

Could once again check DIMM SPD data by using Aida64 Extreme Edition Trial version. Run Aida64 and select Motherboard on left, then select SPD. Detailed SPD data (more than that given by CPU-Z and HWiNFO64) should be displayed. Note the timings and voltage for 1333 MHz (666 MHz) entry IF there is one. Then enter those timings and voltage into BIOS.

If for some reason there is no entry for 1333 MHz (666 MHz), adjust the timings to 9-9-9-26-39 and at 1.7 V. If still have problems adjust timings to 9-9-9-26-40.
 
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