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Working DDR3-2000

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wanna_buy

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Sep 3, 2010
I have the following rig: Intel Core i7- 875K processor, Gigabyte mobo and G.Skill Ripjaws F3-16000CL9D-4GBRH. By default the memory runs at DDR3-1333. I can't get my memory running at 2000 Mhz. I have tweaked the BIOS with the and my memory was working stable at 1600 and 1800. The highest fully stable RAM frequency I was able to reach is DDR3-1900 with the following settings:
BCLK -160
CPU Multiplier - 20
SPD Multiplier - 12
QPI/VTT Voltatge - 1.3v
DRAM Voltage - 1.64v
Timings are set manually 9-9-9-24-1T.
SpeedStep and TurboBoost are disabled.

Before I built this rig, I was noob to overclocking.How to get my memory running 2000 mhz stable? Any help will be appreciated.
 
wanna_buy said:
I have the following rig: Intel Core i7- 875K processor, Gigabyte mobo and G.Skill Ripjaws F3-16000CL9D-4GBRH. By default the memory runs at DDR3-1333. I can't get my memory running at 2000 Mhz. I have tweaked the BIOS with the and my memory was working stable at 1600 and 1800. The highest fully stable RAM frequency I was able to reach is DDR3-1900 with the following settings:
BCLK -160
CPU Multiplier - 20
SPD Multiplier - 12
QPI/VTT Voltatge - 1.3v
DRAM Voltage - 1.64v
Timings are set manually 9-9-9-24-1T.
SpeedStep and TurboBoost are disabled.

Before I built this rig, I was noob to overclocking.How to get my memory running 2000 mhz stable? Any help will be appreciated.
Click to expand...

Buy better memory. It is a little unrealistic to expect DDr3 1600 to run happily at 2000mhz, regardless of what timings you use. I'm frankly surprised you got it up top 1800mhz. :thup:

You might get away with it at 11-11-11-29-40...but at that point your timings are so loose you'd be better off at 1333 7-7-7
 
You misunderstood it. I was able to get DDR3-1900. ;) Actually, the model number is F3-16000CL9D-4GBRH which means that it is rated as DDR3-2000.
I think that DDR3-2000 with timings 9-9-9 delivers more performance than DDR3-1333 with timings at 7-7-7.
 
Ahhh, got ya...I saw the part where you said default 1333 and assumed you had something different. In that case, try 9-9-9-24-33-2t see if that works.

It might be possible as well that your CPUs IMC just isn't going to have it. Officially neither AMD nor Intel recognize anything faster than 1333. Other than that I'll let some of the folks with a bit more Intel experience chime in. :thup:
 
I have tried it before and it didn't work. I had also increased QPI/VTT voltage but it still failed stability testers at DDR3-2000.
I wonder if this topic should be started in the Intel CPU section of the forums because it has more viewers.
 
No, this is the spot...its just early still, lot of us where up all night benching. :D

Give them a while.
 
Give them a while.
Click to expand...
What do you mean? DDR3-2000 or DDR3-1900? :D DDR3-2000 failed stability tests in several minutes, so I doubt it will work too long.
 
Gigabyte GA-P55-UD6. It was reasonably priced - $200 so I bought it. It was new and packaged when I bought it.
 
wanna_buy said:
What do you mean? DDR3-2000 or DDR3-1900? :D DDR3-2000 failed stability tests in several minutes, so I doubt it will work too long.
Click to expand...

Lol, he meant the viewers.

I'm no intel specialist, but I've heard that a lot of people had to have a reasonably high vtt in order to stabilize the faster ram.
 
Give these settings a try for 4.0GHz (200 BCLK x 20); adjust the Vcore accordingly, and DRAM frequency at DDR3-2000 w/ 9-9-9-27 timings at 1.66 DRAM voltage...
Code: 
CPU Clock Ratio 20x

Intel(R) Turbo Boost Tech. [Disabled]
CPU Cores Enabled [All]
CPU Multi-Threading [Disabled]
CPU Enhanced Halt (C1E) [Disabled]
C3/C6/C7 State Support [Disabled]
CPU Thermal Monitor [Auto]
CPU EIST Function [Disabled]
Bi-Directional PROCHOT [Auto]

Base Clock (BCLK) Control [Enabled]
BCLK Frequency [200]
Extreme Memory Profile (X.M.P.) [Disabled]
System Memory Multiplier (SPD) [Disabled]
Memory Frequency (MHz) 1333 2000
PCI Express Frequency (MHz) [Auto]
C.I.A.2 [Disabled]

CPU Clock Drive [ 800mV]
PCI Express Clock Drive [ 900mV]
CPU Clock Skew [ 0ps]

Extreme Memory Profile (X.M.P.) [Disabled]
System Memory Multiplier (SPD) [10.0]
Memory Frequency (MHz) 1333 2000
Performance Enhance (SPD) [Standard]
DRAM Timing Selectable (SPD) [Expert]
Profile DDR Voltage 1.5v
Profile QPI Voltage 1.1v
Channel Interleaving 6 [Auto]
Rank Interleaving 4 [Auto]

>>>>> Channels A & B

Cas Latency Time 9 [9]
tRCD 9 [9]
tRP 9 [9]
tRAS 24 [27]

Advanced Voltage Settings:

Load Line Calibration...................[Level 2]
CPU Vcore..................1.19375v..[1.41875v]
QPI/VTT Voltage..........1.100v.....[1.400v]
>>> MCH/ICH
PCH Core....................1.050v.....[Auto]
CPU PLL......................1.800v.....[Auto]
>>> DRAM
DRAM Voltage..............1.500v.....[1.660v]
DRAM Termination.........0.750v.....[Auto]
Ch-A Data VRef............0.750v.....[Auto]
Ch-A Data VRef............0.750v.....[Auto]
Ch-B Data VRef............0.750v.....[Auto]
Ch-B Data VRef............0.750v.....[Auto]

Isochronous Support...................[Enabled]
Virtualization technology..............[Enabled]
 
No luck w/ what.. Memtest86+, a successful POST, booting into Windows, etc.? Bump the VTT from 1.40 to ~1.45 - 1.50V.
 
I think redduc is wanting to know what stability test you are using.
 
are you oc'ing the cpu while doing this test, as that could well be the culprit also. I had an I7 920 that wouldnt pass that test at stock speeds and wasnt the memory.
 
Well, with BCLK 200, it is impossible to hit the exact 2933 Mhz. So I was testing stability with CPU over 3 Ghz. I passed the stability test with CPU running 3.2Ghz and DDR3-1900. This test is created exactly for testing overclocked system's stability.
 
Hey there Wanna_buy,

First off how many GB of ram are you trying to get running at 2000 mhz? I see you didn't specify how large the kit was but, I had 12 gb of the nearly identical ram (I had triple channel) and after a lot of compromise and tweaking, I managed to get it running to 1800 mhz stable. I talked with the G Skill Mod in their forum and his suggestion was to run a qpi voltage of 1.65 or higher, which in my opinion seems scary. Out of curiosity, I tried creating a gaming rig on a couple different companies' sites and for RAM options, they would not give you the choice of 12 gb @ 2000 mhz. it just requires too much voltage I guess. Hope this helps somewhat! :)
 
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