Gigabyte X48T DQ6 Living Review - Page 87

UNSTABLE_HERO · #**861** 18-01-2009, 22:10

i aggre with supershanks!also u could try this subtimmings may help you to put tighter values at the 4 basic timmings

ACT to ACT Delay(tRRD)............: 5
Rank Write to READ Delay (tWTR)...: 8
Write To Precharge Delay (tWR)....: 12
Refresh to ACT Delay (tRFC).......: 72
Read To Precharge Delay (tRTP)....: 6
Static tREAD Value (tRD)..........: 8
Static tREAD Phase Adj............: Auto
Command Rate (CMD)................: 2T

denebe · #**862** 18-01-2009, 22:14

Quote:

Is this your ram the 2 x 2Gb kit? OCZ DDR3 PC3-14400 Platinum Edition

Exactly.

Quote:

If you look at Ace's Clocks in this thread he's run very well with 2x2gb and a quad

Thank's for the link.

In my last three screenshots, there is a bios configuration which doesn't boot only one time.
fsb: 375
spd: 4D (=> dram frequency: 750)
Primary timings: 8-8-8-27
Refresh to act delay: 62
Command rate: 2T

DDR3 overvoltage: +0.4 (I've already try +0.45 it is the same issue)
FSB overvoltage: +0.2
(G)MCH..: +0.15

As my ddr3 is sailed to work at 8-8-8-27 and 900Mhz (dram frequency), I think my ddr3 have problem and should be change by OCZ, isn't it ?

What is the memory of Ace ?

edit: Unstable-hero, I'll try (but in may be one hour and half, I can't before)

supershanks · #**863** 19-01-2009, 00:06

Ace's Ram
It might be worth trying a higher TRFC 70~85 i'm not sure what ram chips they are but some do need particularly high values, see UNSTABLE_HERO has suggested a higher value as well.

denebe · #**864** 19-01-2009, 00:50

It is not working even with the secondary timings (no boot).
This is the bios configuration of this test:

Quote:

GIGABYTE GA X48T DQ6 Clock Settings

MB Intelligent Tweaker (MIT)
Robust Graphics Booster...........: auto
CPU Clock Ratio...................: 6
CPU Frequency.....................: 2.25Mhz
CPU Host Clock Control............: Enabled
CPU Host Frequency(Mhz)...........: 375Mhz
PCI Express Frequency (Mhz).......: 100Mhz
C.I.A.2...........................: Disabled
Performance Enhance...............: standard
System Memory Multiplier (SPD)....:4D
Memory Frequency(Mhz).............: 1500Mhz
DRAM Timing Selectable ...........: Manual
Standard Timing Control
CAS Latency Time (tCL)............: 8
DRAM RAS# to CAS# (tRCD).........: 8
DRAM RAS# Precharge (tRP).........: 8
Precharge Delay (tRAS)............: 27
Advanced Timing Control
ACT to ACT Delay(tRRD)............: 5
Rank Write to READ Delay (tWTR)...:8
Write To Precharge Delay (tWR)....:12
Refresh to ACT Delay (tRFC).......: 72
Read To Precharge Delay (tRTP)....: 6
Static tREAD Value (tRD)..........:8
Static tREAD Phase Adj............: Auto
Command Rate (CMD)................:2T
Clock Driving and Skew Control
CPU/PCIEX Clock Driving Control...:800
CPU Clock Skew Control............: normal
(G)MCH Clock Skew Control.........: normal
System Voltage Control () = Base Voltages
DDR3 OverVoltage Control...(1.50v):+0.45v
PCI-E OverVoltage Control.,(1.50v):normal
FSB OverVoltage Control....(1.10v):+0.2v
(G)MCH OverVoltage Control,(1.45v):+0.15v
CPU GTLREF1 Voltage*.......(67%)..: Auto
CPU GTLREF2 Voltage*.......(61%)..: Normal
Loadline Calibration..............: Auto
CPU Voltage Control...............: 1.3750v
Normal CPU Vcore..................:1.25v
Note: * Hidden Features Press [CTRL] + [F1] from main Menu to Access
Advanced Bios Features
CPU Multi-Threading...............: Disabled
Limit CPUID Max to 3..............: Disabled
No-Execute Memory Protect.........: Disabled
CPU Enhanced Halt(CIE)............: Disabled
CPU Thermal Monitor 2.............: Disabled
CPU EIST Function.................: Disabled
Virtuaalization Technology........: Disabled

What do you think about a wrong ddr3 modules ? (mine is sailed to work about at 8-8-8-27 1800Mhz)

supershanks · #**865** 19-01-2009, 13:34

That's not good, you might try increasing mch core a bit from +0.15, but that's pretty well a last stab. How long have you had them ? I'd see if it's possible to exchange them , with your retailer, as incompatible. You night elaborate on what OCZ told you and say you obviously weren't aware of that when you purchased them.

denebe · #**866** 19-01-2009, 18:47

OK, I'll try +0.15V more on (G)MCH (without hope).

I bought my memory in jun 2008. It never works well at high frequency. I 've contacted OCZ at this date but they told me it was due to the chipset, which doesn't work with a quad and high dram frequency (more than about 700Mhz). They told me with dual core there is no problem.

Here is a quote of the OCZ answer:

Quote:

L'utilisation d'un processeur quad core sature le chipset qui ne pourra fournir que 1400-1550mhz en memoire avant de ne plus etre stable, avec un dual core la memoire tiendra 1800mhz sans probleme. j'ai le meme probleme avec un quad core 45nanometre et des barrettes 1600mhz, en fait tous les gens qui ont un quad core, de la ddr3 de plus de 1333 rencontrent ce phénomene, tous chipsets confondus.

A ce point je blame intel car tous les boards connus rencontrent cette limitation.

Possiblement pourquoi intel migre bientot au LGA1366 vu le nombre insuffisant de data pins pour transiger avec quatre coeurs et de la memoire a tres haute frequence.

Nous garantissons que la memoire est capable d'opérer a 1800mhz, vos resultats dependent de votre combinaison de pieces qui est fait.

Vous pouvez essayer avec refresh to ACT a 88 voir si les resultats sont meilleurs.

Cordialement,
Simon

You can guess the main meaning: 1400-1550Mhz is the max ram frequency of the memory with quad core. And with dua core is gone be ok at 1800Mhz without problem.

It is quite late to ask my retailler now I think. In fact I have waited for two reasons: possible bios improvement, and the answer of OCZ disturbed me. I was not very sure, and do not really have a clear point of view (as I never heard this kind of answer and as not a lot of people knew very well the new board X48 + DDR3).

What do you do in my situation, ask OCZ to give me another model ? Hum...

supershanks · #**867** 19-01-2009, 20:22

Quote:

It is quite late to ask my retailler now I think.

Yes I think so, that's a pity. As you can see from ace's clocks 1600 at least is possible. Fine this kit is rated higher, I'd get back in contact with OCZ maybe try an rma. It might be worth while trying The Official OCZ Support Forum to see what they say.

I understand your frustration Clunk & I both tried a set of these OCZ DDR3 PC3-16000 Platinum Enhanced Bandwidth Edition last year.
The result was Currently the only platform we support DDR3-2000 on is the 790i by Nvidia for just this reason. which of course was news to me.

I just ended up selling them.

denebe · #**868** 19-01-2009, 20:58

Yes, so I'm trying an RMA, and let my computer sleeps for weeks... (this is the third reason why I do not change my memory sooner)

The compability (quality) of OCZ memory is not so good, if I understand well, isn't it ?

Before, I only bought corsair, it was the first time I try OCZ. And the last time

UNSTABLE_HERO · #**869** 19-01-2009, 22:28

and one more thing is that the x48t is good with duos but very unstable with quads(compared with asus,msi,dfi, ect)the bios and ic chips are very old for an x48 board they dont have pll volts and gtlrefs in mvolts,ram skews ect the settings are from the time of the p35 chipsets!and they say at the page 17 of the manual that 1600/1900 speeds only with 2 sticks so bye-bye high speeds with 4 sticks(i haven't seen that in any other x48 m/b manufacture to say something like that) also its not a cheap mobo!even with cellshock(2x1gb)was so hard to stabilise it and a 2x2 kit is even worse for the NB + a quad!sometimes its luck and some rams runs fine in some mobos an not so good in an other mobos!i want to put 2x2gb and i dont now if i can reach the same speeds after that!u can try static tREAD Value (tRD)..........:9 or 10 (helped me a lot) nb volts 0.250-0.300 and 200ps skews for nb and cpu!also the f6b is a good and stable bios try it!

supershanks · #**870** 19-01-2009, 23:17

I'd have a play about , try UNSTABLE_HERO's suggestions.
Yes I'm not that impressed with OCZ myself

Corsair , Crucial are good and g-skill have been makingf a good impression lately.