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ooztuncer

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

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Finished testing mine. 2.6V was all these particular sticks needed, anything less or more would mess things up.

240-254MHz 3-4-3-6

245-250MHz 3-4-4-8

250-260MHz 3-5-4-9

260-275MHz 3-5-5-10

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I was wondering, would there be a demand for a chart project on timings around or below stock speeds? For the G.Skill HZ/UCCC in particular. For instance if someone isn't wanting to OC the clock on them, but rather a reference chart of stable tight timings people have reached at certain speeds?

 

For instance, since I am stuck with a max of 255mhz... I am going through now and finding all the lowest (or highest, depending on which is better) settings for this ram.

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Followed a tip from blazin-asian on the Opteron OC thread and changed Max Async Latency and Read Preamble time to auto. Also bumped my LDT voltage control to 1.4V. Good at 273 but failed prime at 274 after 11 mins. Working with a 180 divider, I'm priming overnight at 275. Might try to push a little further over the weekend, but I can't complain about current performance. Here's my settings at 273:

 

Opteron 146

NF4 Ultra-D 623-1

FSB - 273

LDT - x3

CPU/FSB Ratio - x10

Vcore - 1.425 x 104%

LDTv - 1.4

CHPv - 1.6

vDIMM - 2.6

 

 

board ultra-d

Real Ram MHz: 273

BIOS version - 623-1

FSB Bus frequency - 273

LDT/FSB frequency ratio - 3

CPU/FSB frequency ratio - 10

PCI-Express frequency - 100

LDT voltage control - 1.4

Chipset voltage control - 1.6

DRAM voltage control - 2.66

Dram frequency set (MHz) - 200

Command per clock (CPC) - enable

CAS latency control (tCL) - 3

RAS# to CAS# delay (tRCD) - 4

Min RAS# Active Timing (tRAS) - 8

Row Precharge timing (tRP) - 3

Row cycle time (tRC) - 7

Row refresh cycle time (tRFC) - 14

Row to row delay (tRRD) - 2

Write recovery time (tWR) - 2

Write to read delay (tWTR) - 2

Read to write delay (tRTW) - 3

Refresh period (tREF) - 3684

Write CAS# latency (tWCL) - 1

DRAM bank interleave - enable

DQS skew control - auto

DQS skew value - 0

DRAM drive strength - 7

DRAM data drive strength - 3

Max Async Latency - auto

DRAM response time - normal

Read Preamble time - auto

Idle cycle limit - 16

Dynamic counter - disable

R/W queue bypass - 16x

Bypass max - 7x

32 byte granulation - disable

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here are some more settings if you like:

 

Opteron 148

NF4 Ultra-D 623-3

FSB - 273

LDT - x3

CPU/FSB Ratio - x11

Vcore - 1.475 x 110%

LDTv - 1.4

CHPv - 1.6

vDIMM - 2.63

 

 

board ultra-d

Real Ram MHz: 273

BIOS version - 623-3

FSB Bus frequency - 273

LDT/FSB frequency ratio - 3

CPU/FSB frequency ratio - 11

PCI-Express frequency - 100

LDT voltage control - 1.4

Chipset voltage control - 1.6

DRAM voltage control - 2.63

Dram frequency set (MHz) - 200

Command per clock (CPC) - enable

CAS latency control (tCL) - 3

RAS# to CAS# delay (tRCD) - 4

Min RAS# Active Timing (tRAS) - 3

Row Precharge timing (tRP) - 0

Row cycle time (tRC) - 7

Row refresh cycle time (tRFC) - 14

Row to row delay (tRRD) - 2

Write recovery time (tWR) - 2

Write to read delay (tWTR) - 2

Read to write delay (tRTW) - 3

Refresh period (tREF) - 3684

Write CAS# latency (tWCL) - 1

DRAM bank interleave - enable

DQS skew control - auto

DQS skew value - 0

DRAM drive strength - 7

DRAM data drive strength - 3

Max Async Latency - auto

DRAM response time - normal

Read Preamble time - auto

Idle cycle limit - 256

Dynamic counter - disable

R/W queue bypass - 16x

Bypass max - 7x

32 byte granulation - disable

 

those were the magic settings for me. leave your timings at 3-4-4-8 to check for stability then you can tighten afterwards. good luck!

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Thank you hat and blazin! This type of reminders will definitely help me and everybody...

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Hello everyone, I just placed an order for 2x1 Gskill HZ PC4000 from the egg, And seeing that this is the first time I have ever changed ram on a computer I was wondering if someone could give me the proper steps I need to do to go from what I have in my sig to the new ram. (Ram in sig is at 3.2v, The jumper is not set to 4v. and cpu has modest OC at 2600)

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Do you want instructions on how to physically change the ram?

 

From a settings perspective, you should de-overclock before starting up with the new ram - put it back to stock (eg, optimised settings or a CMOS clear will probably do). My experience suggests you could plug in pretty much any of the specs in this thread (in particular the technicians ones) and it will fun fine with no overclocking, and probably right up to rated speed at 250mhz. I've found beyond that quite hard work.

 

From optimised defaults, you can start overclocking them - at least you already know what the CPU will do so you need to find out what the ram will do...

 

Most importantly, don't run your current 3.2v through them :)

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So I would set optimised defaults, turn off, unplug, remove old ram, install new ram in orange slots, restart and inter bios. Is this correct.

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That's what I did. Careful of static etc (not that I really ever think about that). I then ran memtest for a while (it was good), booted into windows and ran a few tests (also good). After that I rebooted and input some settings from the spreadsheet on this thread and bunged it straight up to the rated 250mhz and re-did those tests.

 

If you were to follow the o/c guide, you'd probably do one stick of ram at a time in the second orange slot, etc etc, running memtest extensively. I like to cut corners, LOL.

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