Need help with ram timings

I have a problem setting ram timings, i oc my i7 920 to 3.5ghz and my ram timings changed from 7-7-7-18 to 9-9-9-20, heres my oc settings
Bus speed=168
Multiplier=21
Vcore voltage=1.175v with Vdroop enabled
everything else is on auto
I use 6gb ddr3 1600 OCZ ram
Here is my problem, when i try to change my timings manually to 7-7-7-18 or 8-8-8-20 my pc wont boot, now i can live with 9-9-9-20 settings, but when i use 19 multiplier instead of 21 (i7 likes odd multiplier 20 doesn't work as good) i have to set my bus speed higher 19x185=3.5ghz which gives me timing 11-11-11-24, and if i change timing system wont boot, i know i should be able to set my timing to at least 8-8-8-20 @3.5, any help would be appreciated.

which are the recommended voltage of that ram, and which voltage are you using for the ram?

Intel recommend not to go over 1.65v for ram as it might damage cpu, i currently have it at auto which sets it at 1.5v, but i tried changing it to 1.64v and setting timings manually
it still did not boot

What model board do you have? And post a direct link to your specific RAM at the OCZ site.

vdgamer said:

Intel recommend not to go over 1.65v for ram as it might damage cpu

Click to expand...

A recommended max. Vddq (DRAM voltage) of 1.65 applies when QPI / Vtt / Uncore voltage isn't increased beyond the default of 1.15V. As long as there is at the most a 0.5V voltage differential between Vtt and Vddq, absolute maximum Vddq as spec'd by Intel for the i7-900 series chips is 1.875V. Absolute max. Vtt is 1.35-1.375V, so combined w/ a max. Vddq of 1.875V = a 0.5V differential in the two voltages. Not that anyone but hardcore benchers would ever run their RAM at 1.875V, but it is listed as the absolute max. nevertheless. Most people don't run any higher than ~1.70-1.72V, but in addition keeping a 0.5V voltage differential, meaning an increase in Vtt to at least 1.20-1.22V w/ that DRAM voltage to keep from damaging the IMC.

okay but most people run their dram voltage @ 1.64,1.65,1.66 and set their timings to 7-7-7-18 or 8-8-8-20, it tried changing mine to 1.64 and set timings to 8-8-8-20 and it didnt work, would changing dram votage to 1.65-1.66v work ? i dont think that dram voltage is my only problem, i need help configuring all ram settings, right now everything is on auto except for vcore its at 1.175v with vdroop on, which drops it to 1.15v.

Lets ask again. What are the STOCK timings for those sticks. Unless we know that information, we will be unable to help you out. You can post a CPUz screenshot of the SPD tab.

in the first post i said it, they we 7-7-7-18 and after oc to 3.5ghz 21x168 they changed to 9-9-9-20

Im not sure you are understanding us. What are the stock timings of the ram? Can you link to the product page on newegg or OCZ or please put up a screenshot of CPUz SPD tab......are you saying the stock settings are 7-7-7-18 or is that just what your PC set it up to b/c it was set to AUTO. Please clarify, though again it would be easier if you simply posted any of which was asked.

here is my current ram info from pc wizard

General Information :
A0 (RAS 0, RAS 1) : 2048 (Double Bank)
A1 : Empty
A2 (RAS 4, RAS 5) : 2048 (Double Bank)
A3 : Empty
A4 (RAS 8, RAS 9) : 2048 (Double Bank)
A5 : Empty

Information SPD EEPROM (A0) :
Manufacturer : OCZ
Part Number : OCZ3G1600LV2G
Serial Number : 0018D62052A51018
Specification : F
Type : DDR3-SDRAM PC3-8500 (533MHz) - [DDR3-1067]
Format : UDIMM (133.35 x )
Size : 2048MB (2 ranks, 8 banks)
Module Buffered : No
Module Registered : No
Module SLi Ready (EPP) : No
Module XMP : No
Width : 64-bit
Error Correction Capability (EC... Unspecified
Prefetch Buffer : 8-bit
Manufacture : 2000
Thermal Sensor : No
Heat Spreader : No
Supported Frequencies : 381MHz, 457MHz, 533MHz, 610MHz
CAS Latency (tCL) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
RAS to CAS (tRCD) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
RAS Precharge (tRP) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
Cycle Time (tRAS) : 12 clocks @ 381MHz, 14 clocks @ 457MHz, 16 clocks @ 533MHz, 19 clocks @ 610MHz
Min TRC : 19 clocks @ 381MHz, 23 clocks @ 457MHz, 27 clocks @ 533MHz, 31 clocks @ 610MHz

Information SPD EEPROM (A2) :
Manufacturer : OCZ
Part Number : OCZ3G1600LV2G
Serial Number : 0018D62052A51018
Specification : F
Type : DDR3-SDRAM PC3-8500 (533MHz) - [DDR3-1067]
Format : UDIMM (133.35 x )
Size : 2048MB (2 ranks, 8 banks)
Module Buffered : No
Module Registered : No
Module SLi Ready (EPP) : No
Module XMP : No
Width : 64-bit
Error Correction Capability (EC... Unspecified
Prefetch Buffer : 8-bit
Manufacture : 2000
Thermal Sensor : No
Heat Spreader : No
Supported Frequencies : 381MHz, 457MHz, 533MHz, 610MHz
CAS Latency (tCL) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
RAS to CAS (tRCD) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
RAS Precharge (tRP) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
Cycle Time (tRAS) : 12 clocks @ 381MHz, 14 clocks @ 457MHz, 16 clocks @ 533MHz, 19 clocks @ 610MHz
Min TRC : 19 clocks @ 381MHz, 23 clocks @ 457MHz, 27 clocks @ 533MHz, 31 clocks @ 610MHz

Information SPD EEPROM (A4) :
Manufacturer : OCZ
Part Number : OCZ3G1600LV2G
Serial Number : 0018D62052A51018
Specification : F
Type : DDR3-SDRAM PC3-8500 (533MHz) - [DDR3-1067]
Format : UDIMM (133.35 x )
Size : 2048MB (2 ranks, 8 banks)
Module Buffered : No
Module Registered : No
Module SLi Ready (EPP) : No
Module XMP : No
Width : 64-bit
Error Correction Capability (EC... Unspecified
Prefetch Buffer : 8-bit
Manufacture : 2000
Thermal Sensor : No
Heat Spreader : No
Supported Frequencies : 381MHz, 457MHz, 533MHz, 610MHz
CAS Latency (tCL) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
RAS to CAS (tRCD) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
RAS Precharge (tRP) : 5 clocks @ 381MHz, 6 clocks @ 457MHz, 7 clocks @ 533MHz, 8 clocks @ 610MHz
Cycle Time (tRAS) : 12 clocks @ 381MHz, 14 clocks @ 457MHz, 16 clocks @ 533MHz, 19 clocks @ 610MHz
Min TRC : 19 clocks @ 381MHz, 23 clocks @ 457MHz, 27 clocks @ 533MHz, 31 clocks @ 610MHz

Memory Controller Information :
Memory Controller : DIMM
Number of connectors : 6
Max. Module Size : 2048MB
Max. Memory Size : 12288MB
Supported Speed : Unspecified
Supported Voltages : 5v
Error Detection Method : 8-bit Parity
Error Correction Capability : None
Current/Supported Interleave : 1-way/1-way

[/URL] Uploaded with ImageShack.us[/IMG]
[/URL] Uploaded with ImageShack.us[/IMG]

Work is blocking those images for me... I hope thats the shot we are looking for!

i think i solved my issue, i raised my dram voltage to 1.60v and QPI to 1.20V and set my timings to 8-8-8-19 which is what my ram is rated at 1218mhz frequency, but im running 1340mhz right now, i just want to know if its safe, and also if i change my ratio from 2:8 to 2:10 to take advantage of my 1600 ram, my ram frequency will go to 1684 its little over my ram max speed i want to know if its safe to keep it like that and if it is would 9-9-9-24 timings be okay? stock timings for it at 1600 are 10-10-10-30 http://www.newegg.com/Product/Product.aspx?Item=N82E16820227424

HUh? You linked DDR3 2000 kit, not 1600. Even if you did get 1600 kit, your may not work there or it would likely have been sold at that speed.

Bottom line is nobody can tell you if it will work without you testing it to find out. Thats the name of the overclocking game. So get testing and report back!

my bad this is the link http://www.newegg.com/Product/Product.aspx?Item=N82E16820227573 i understand that i have to test it my self to see what works best for me personally but i wanted to know is its okay to go over a little on 1600, since i dont want to change my bus setting from 168, it will give me 1684, dont want to test until i know its safe

ok its ocz cas6, which by factory "should" be able to run a non-oc'd machine at 6-8-6-24 @ 1.65volts

when you overclock you have to also remember to set your ram multiplier, which I think for overclocking should be at a 2:8 divider..

that is what its at now which gives me 1341 frequency, 168 bus, so im not utilizing full speed of the ram, can anyone tell me if its safe to exceed ram speed a little, can i set divider to 2:10 which will put me at 1683 frequency with current bus at 168

just lowered dram voltage to 1.55v and qpi to 1.15v, testing with prime95 blend for an hour seems stable so far, timings 8-8-8-24-74, 2:8 divider 1341mhz ram speed, want to get it closer to 1600, while keeping similar timings

as long as its stable and not heating up like a monster you can "oc" the ram above spec.. usually you need looser timings to do that though

I have 1600ram that only runs in the 1530range.. i dont notice the difference in the seat of my pants test, butI do see benchmarks change if its higher.. im ok with my eyes not seeing it!