Gskill F3-16000CL9-2GBTD memory not showing correctly on Gigabyte EX58-UD4P

[dalnat1]

Hi there and thank you for the opportunity to discuss my issue.....

The installed Gskill F3-16000CL9-2GBTD (3x2GB) (9-9-9-24) memory is only showing as PC3-10700H (667MHz). Motherboard is a Gigabyte EX58-UD4P rev 1.0 Bios F14k CPU is Core i7 920 model A.
Revision D0. CPU has not been overclocked and Bios is currently at original settings. Everthing working fine except i'm not getting the full use out of the RAM.

I have read other postings and can see that i'll likely need to manually change bios settings.... Which is fine, but i have no idea what settings I need to load. What do Gskill suggest for this memory/motherboard combination?

CPU cooling and PSU are not an issue, so as I learn more I will try overclocking..... But for now I just want to see the CPU-Z readings reflecting whats actually under the bonnet!!!

Regards, Dale. Melbourne, AUS.

[Tradesman]

Showing 1333 as that is the mobo default, set speed to 1500 and ensure the base timings, DRAM voltage and CR (Command Rate = 2t or 2N) are correct, should be good to go

[GSKILL TECH]

The only thing CPU-z will reflect is the model of memory, and the SPD timings table of the rated memory. You should see XMP-1000MHz 9-9-9-24

The "max bandwidth" you are looking at is not based on the memory. It is based on the motherboard. What this shows you is that with no manual settings in BIOS, everything left to AUTO (defaults), the motherboard can only read 667MHz DDR3-1333 CL9 max. This is why anything higher than this, you need to make manual changes.

For actual performance of the memory, you should look in the memory tab. After you set it up correctly, it should show like the XMP timings table.

DRAM Frequency 1000MHz
9-9-9-24

Thank you
GSKILL TECH

[dalnat1]

Thanks for the prompt response. Yes I can see the xmp 9-9-9-24 @ 1000mhz listed...... but i'm not sure specifically which of the below (current) settings I need to change:

CPU-Z version 1.56
Processors Information
Processor 1 ID = 0
Number of cores 4 (max 8)
Number of threads 8 (max 16)
Name Intel Core i7 920
Codename Bloomfield
Specification Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
Package (platform ID) Socket 1366 LGA (0x1)
CPUID 6.A.5
Extended CPUID 6.1A
Core Stepping D0
Technology 45 nm
Core Speed 1716.1 MHz
Multiplier x FSB 12.0 x 143.0 MHz
Rated Bus speed 2574.1 MHz
Stock frequency 2666 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x
L1 Data cache 4 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache 4 x 32 KBytes, 4-way set associative, 64-byte line size
L2 cache 4 x 256 KBytes, 8-way set associative, 64-byte line size
L3 cache 8 MBytes, 16-way set associative, 64-byte line size
FID/VID Control yes
Turbo Mode supported, disabled
Max turbo frequency 2933 MHz
Max non-turbo ratio 20x
Max turbo ratio 22x
Max efficiency ratio 12x
TDP Limit 130 Watts
TDC Limit 110 Amps
Core TDP 110 Watts
Uncore TDP 20 Watts

Memory SPD
DIMM # 1
SMBus address 0x50
Memory type DDR3
Module format UDIMM
Manufacturer (ID) G.Skill (7F7F7F7FCD000000)
Size 2048 MBytes
Max bandwidth PC3-10700H (667 MHz)
Part number F3-16000CL9-2GBTD
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.0
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-16-22 @ 444 MHz
JEDEC #2 7.0-7-7-19-26 @ 518 MHz
JEDEC #3 8.0-8-8-22-30 @ 592 MHz
JEDEC #4 9.0-9-9-24-33 @ 666 MHz
JEDEC #5 10.0-10-10-27-37 @ 740 MHz
XMP profile XMP-2000
Specification PC3-16000
Voltage level 1.650 Volts
Min Cycle time 1.000 ns (1000 MHz)
Min tRP 9.00 ns
Min tRCD 9.00 ns
Min tWR 10.00 ns
Min tRAS 24.00 ns
Min tRC 30.00 ns
Min tRFC 60.00 ns
Min tRTP 6.00 ns
Min tRRD 6.00 ns
Command Rate 1T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 9.0-9-9-24-30-1T @ 1000 MHz (1.650 Volts)

Mainboard Model EX58-UD4P (0x00000254 - 0x02FD2A00)

[GSKILL TECH]

You should be looking in BIOS, not CPU-z. CPU-z is only informational, nothing more. You also have to understand what information you are looking at otherwise you can be confused like the "max bandwidth" scenario.

Here is what your BIOS should look like:

In MIT (MB Intelligent Tweaker):

CPU Clock Ratio - 17x for 2.8GHz
QPI Link Speed - AUTO
Base Clock Control - Enabled
BCLK Frequency - 167
Performance Enhance - Standard
Extreme Memory Profile - Disabled
System Memory Multiplier - 12

Uncore & QPI Features
Uncore Frequency - 4008

DRAM Timing Selectable - Manual

CAS Latency Time - 9
tRCD - 9
tRP - 9
tRAS - 24

Enter these for the other three as well.

Channel A Timing Settings

Advanced Timings
Command Rate - 2

Advanced Voltage Control
Load-Line Calibration - Disabled
CPU Vcore - 1.32V
QPI/VTT Voltage - You need to find the stable value for this voltage
DRAM Voltage - 1.640V
Rest to AUTO

Thank you
GSKILL SUPPORT

[dalnat1]

Yes I agree - need to get a handle on all this! Steep learning curve. Ok i'll use bios as the indicator. I'm sure I understand what to do now. Will let you know shortly.

Thanks again, Dale.

[dalnat1]

Do you have any suggestions on likely QTT voltages or approx range I should try? Anything over about 1.35v is shown as red by Gigabyte but ive seen other posts going way above this to 1.6v....

[GSKILL TECH]

i7 920 Model A, do you mean C0?

Most i7 920's want around 1.45V-1.60V for DDR3-2000.

What you can do is try DDR3-1600, see where it's at, try DDR3-1800, see where it's at, that way you know roughly what DDR3-2000 should be. Then you just need to fine tune for the precise voltage so it is not over or under volted. Once you get that, everything should be perfectly stable.

For more info, search "X58a" on this forum. I have helped many users in the past with this same exact combo, even information on overclocking to 4.0GHz, so that should help you learn some.

Thank you
GSKILL TECH

[dalnat1]

Sorry, my question should have said:

Do you have any suggestions on likely QPI/VTT voltages or approx range I should try? (ie: Do you think somewhere around 1.2v is where i should start.....or perhaps
1.5v....or....) Anything over about 1.35v is shown as red by the Gigabyte M.I.T. but ive seen other posts suggesting it's ok going way above this to 1.6v....

[GSKILL TECH]

Most i7 920's want around 1.45V-1.60V for DDR3-2000.

Red is normal, it needs to be red for DDR3-2000.

Try 1.45V, if no boot, 1.50V... once it finally boots, you can fine tune in smaller increments and test for stability.

Thank you
GSKILL TECH