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ooztuncer

G.Skill HZ/Any other UCCC (2x1024) 260+ please post here

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I got my new 2x1024 HZ yesterday and immediately start playin. Out of the box (timings tweaked of course) by using 5-10fix1 bios, cpu @ 10x250 (vcore:1.375, vdimm: 2.6) was memtest stable for 8 hours and it's priming now when I am at work...

 

I had to spend hours of forum reading to get some other users timings and finally I built a spreadsheet. In addition, I decided to share my findings.

 

What I wanted is proved overclocked rams to be found under one thread so that many users will not be furious like me!

 

Due to cultural differences b/w forums, "proved stability" can mean many different things. Please post here if you are 4+ hours prime stable - 1m or 32m is not sufficient...

 

Please follow the sequence like you see in the table below. For instance, look at micutzu's settings and post like this:

ultra-dAD0-290-7042bta-290-3-10-100-1.3-1.6-2.8-200-enable-3-4-6...-disable

 

Especially, dont forget to report bios, vdimm, trfc, tref, (data) drive strength, rpt, and async latency.

 

Please dont post A64 screenshots (stand alone I mean - if you already give all the detail ur more than welcome to post anything you want)

 

250mhz is the rated specs for this memory please dont post something less than 250, my aim is to see especially 260+ settings.

 

New buyers, use Thunda's setting below - should be perfectly fine for 99% of people at 250 Mhz.

 

 

UPDATE:

1) I will not update the table overnight, but perhaps every 10-14 days.

2) Dont forget to check workbook 2 and 3 (if needed)

 

SOME INFORMATION:

1) Please continue to report HZ speeds + any UCCC stats. I can put them into page2.

2) You can report with your NF3 board/expert board/rdx200 board - doesnt matter as long as it is dfi made.

3) If you find a new higher clock, please report in a different post - do not update your original.

4) I am aware that cpu and/or other bios settings (like lord davis posted in post#54) play some role for the speed of your rams - however I have to make some cuts - and for now I am not thinking to expand the information that I am asking in the table. It might change in the future.

5) Important: Please take a look at this info while posting your ram speed:

 

Originally Posted by Sharp

How to calculate your memory frequency

 

Memory Frequency = (FSB x (CPU ratio)) / ] ((CPU ratio) x (FSB : DRAM ratio)) [

 

Ceiling function is shown with ][,

eg

]10.1[ = 11

]10.2[ = 11

]-6.2[ = -6

]-8.9[ = -8

 

For positive numbers always round up to the nearest whole number.

For negative numbers always round down (its actually still up) to the nearest whole number.

 

Big example

FSB = 290

CPU ratio = 7

DRAM:FSB ratio = 5:6, re-arrange to 6:5 (FSB : DRAM)

 

Using the formula,

Memory Frequency = (FSB x (CPU ratio)) / ] ((CPU rato) x (FSB : DRAM ratio)) [

 

Memory Frequency = (290 x (7)) / ] ((7) x (6/5)) [

 

Work this bit out first

] ((7) x (6/5)) [

 

6/5 = 1.2

 

and that becomes

] (7) x (1.2) [

 

7 x 1.2 = 8.4

 

Now remember the ceiling function, ][

 

]8.4[ = 9

 

Put that back into the main formula

 

Memory Frequency = (290 x (7)) / 9

 

So

Memory Frequency = (290 x 7) / 9

= 225.5Mhz.

 

Use 11/12 ratio in calculations rather than 9/10.

 

Originally Posted by G.Skill Technician in xtremesystems on 02/14/2006

hummm there is a good way to test it!

 

1. lower your CPU to 250 * 7 or 8 with the setting you have

2. start sp2004 large test or prime95 large test or memtest windows version

3. start clockgen

4. using clockgen to increase the FSB 251, 252, 253, until your test show error

5. restart your computer and increase .03v

6. repeate 1 to 4 again, if no big FSB increases, go to next step 7

7. lower about 5 FSB and do the full tests

 

this is my ultimate max memory overclock theory testing!

 

*** Please note that playing with overclocking applications under windows may crash your system easily - bewarned.

 

last update: March 27, 2006 2.16 PM (eastern US)

 

REMINDER (again): Please submit your settings as a list not a screen shot (I used to decipher screenshots in the beginning but no time for it anymore, please understand...)

 

REMINDER (again): Just to be clear, use "REAL RAM" calculation formula while posting.

 

EXPECTATIONS from this RAM (and overclocking in general): PLease take some time and read Praz's post (post# 270) - VERY well said - thanks...

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Guest FZ1

I had a screenie on here as well with settings...I'll have to pull the full BIOS values. It's worth mentioning that BIOS 623-1 seems to work well with these. They are really starting to become popular sticks!

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Ooz, awesome. I just placed my system order including the g.skill BHZ. I'd been sifting through searches myself in prep for install. This will simplify things a ton. Good work!!!

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Guest FZ1
FZ1: I know you have a screenie but it doesnt show anything - broken link i believe - otherwise u're @ 264 right ;)
269..screenie still works

a642uc.th.jpg

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@fz1: great - just post your bios values (when you have time) so that I can update the spreadsheet. Thanks.

 

@to all: it's gonna be batch updating (nightly) so next update will be on 02/08/2006 evening.

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Guest FZ1

FSB - 317

LDT - x3

CPU/FSB Ratio - x9

Vcore - 1.450 x 110%

LDTv - 1.30

CHPv - 1.6

vDIMM - 2.6

 

DRAM Frequency Set - 166 (DRAM/FSB:5/06) - with above config = 269Mhz

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 3.0

RAS# to CAS# delay (Trcd) - 04 Bus Clocks

Min RAS# active time (Tras) - 08 Bus Clocks

Row precharge time (Trp) - 04 Bus Clocks

Row Cycle time (Trc) - 07 Bus Clocks

Row refresh cyc time (Trfc) - 14 Bus Clocks

Row to Row delay (Trrd) - 03 Bus Clocks

Write recovery time (Twr) - 02 Bus Clocks

Write to Read delay (Twtr) - 02 Bus Clocks

Read to Write delay (Trwt) - 03 Bus Clocks

Refresh Period (Tref) - 3120 Cycles

Write CAS Latency (Twcl) - 01

DRAM Bank Interleave - Enabled

 

DQS Skew Control - Auto

DQS Skew Value - 0

DRAM Drive Strength - Level 7

DRAM Data Drive Strength - Level 3

Max Async Latency - 8.0ns

DRAM Response Time - Normal

Read Preamble Time - 5.0ns

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Disable(8 Bursts)

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Nice initiative, I have been thinking about starting the same thread now for a few days...but time never permits.

 

I will provide my new settings as soon as I find them valuable enough.

 

You might wanna add UCCC in the title so you will attract also OCZ and Mushkin 2GB kit owners. ;)

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How about we just use the BIOS values ...Drive strength and data drive strength + tref seem to play an important role when overclocking these modules, and the A64tweaker values doesn't really give enough details about these settings, do they?

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Ultra-D 0704-3

FSB - 260

LDT - Auto

CPU/FSB Ratio - x10

Vcore - 1.325 x 110%

LDTv - 1.20

CHPv - 1.50

vDIMM - 2.5

 

DRAM Frequency Set - 200 (DRAM/FSB:1/1)

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 3.0

RAS# to CAS# delay (Trcd) - 04 Bus Clocks

Min RAS# active time (Tras) - 07 Bus Clocks

Row precharge time (Trp) - 03 Bus Clocks

Row Cycle time (Trc) - 07 Bus Clocks

Row refresh cyc time (Trfc) - 13 Bus Clocks

Row to Row delay (Trrd) - 02 Bus Clocks

Write recovery time (Twr) - 02 Bus Clocks

Write to Read delay (Twtr) - 02 Bus Clocks

Read to Write delay (Trwt) - 03 Bus Clocks

Refresh Period (Tref) - 3684 Cycles (100Mhz 1.95us)

Write CAS Latency (Twcl) - 01

DRAM Bank Interleave - Enabled

 

DQS Skew Control - Auto

DQS Skew Value - 0

DRAM Drive Strength - Level 7

DRAM Data Drive Strength - Level 3

Max Async Latency - 7.0ns

DRAM Response Time - Normal

Read Preamble Time - 5.0ns

IdleCycle Limit - 16 Cycles

Dynamic Counter - Enable

R/W Queue Bypass - 8 x

Bypass Max - 04 x

32 Byte Granularity - Disable(8 Bursts)

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