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Thread: G.Skill memory for EP45-UD3P




  1. #11
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    Default Re: G.Skill memory for EP45-UD3P

    Correction to the above. The DCOM error and the Prime95 reboot I mentioned above were one and the same event.

    As I said I don't know much about how memtest86+ works but whenever the pattern "fffffaff" gets written is when memtest gives the error. This seems rather odd to me. I'm running memtest right now and so far 4 passes without error, but I've been watching it and that pattern has not been written yet.
    (1) Gigabyte 3DAurora chassis - Gigabyte Ex38-DS4 - Xeon 3110 - Zalman CNPS9500 LED - 2x1GB PC2 8500 Crucial Ballistix Tracer 2.0v (BL12864AL106A) - ThermalTake Cyclo RAM cooler - 2xMSI Radeon HD4670 - Corsair HX 620W - WD 36GB Raptor - Seagate 250GB (ST3250310AS) - Asus DRW 2014LIT - XP Pro SP3 (32bit)
    (2) NZXT Apollo chassis - Gigabyte EP45-UD3P - E8400 - Xigmatek S1283 Red Scorpion - 2x2GB PC2 8800 G.Skill 1.9v (F2-8800CL5D-4GBPI) - Gigabyte GeForce 9600GT - Corsair HX 520W - Seagate 250GB (ST3250318AS) - LG DRW GH22NP20 - XP Pro SP3 (32bit)

  2. #12
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    Default Re: G.Skill memory for EP45-UD3P

    After much research and testing I managed to get 15 memtest passes without error, with the 8800s running at 1066 (5 5 5 15). Essential settings are:
    FSB 444
    Static tRead (tRD) 12, hoping to get this lower through further testing
    CPU Termination 1.22v
    MCH Core 1.24v
    MCH Ref 0.732v
    SPD 2.40B

    The 2.40B strap is supposed to be used for FSB of 333. When using this strap with the settings above I sometimes get that BIOS message that says something like there have been boot problems and the displayed settings may not necessarily be the ones being used, although it doesn't look like any settings have been reset. If I use the above settings but change FSB to 401 and SPD to 2.66D I get memtest errors during the first pass.

    Is there any problem using the B strap for FSB in the 400's. I would prefer to use the 2.66D strap so I can have a lower FSB (and higher CPU clock) to achieve the mild 3.6GHz overclock I want, but I can't get this memory to pass memtest using the 2.66D strap. I've tried bumping up MCH further but to no avail yet. Again, any suggestions? This is taking up a lot of time that unfortunately I just don't have. I'm still not sure if the memory is faulty or not.
    (1) Gigabyte 3DAurora chassis - Gigabyte Ex38-DS4 - Xeon 3110 - Zalman CNPS9500 LED - 2x1GB PC2 8500 Crucial Ballistix Tracer 2.0v (BL12864AL106A) - ThermalTake Cyclo RAM cooler - 2xMSI Radeon HD4670 - Corsair HX 620W - WD 36GB Raptor - Seagate 250GB (ST3250310AS) - Asus DRW 2014LIT - XP Pro SP3 (32bit)
    (2) NZXT Apollo chassis - Gigabyte EP45-UD3P - E8400 - Xigmatek S1283 Red Scorpion - 2x2GB PC2 8800 G.Skill 1.9v (F2-8800CL5D-4GBPI) - Gigabyte GeForce 9600GT - Corsair HX 520W - Seagate 250GB (ST3250318AS) - LG DRW GH22NP20 - XP Pro SP3 (32bit)

  3. #13
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    Default Re: G.Skill memory for EP45-UD3P

    For the sake of 266MHz DDR, it's worth trying 2.00D or 2.00B.

    There seems to be quite a craze around buying 1066 and above RAM in combination with CPU's that have a respectably high multiplier. You just won't see as much performance from "high speed" RAM as you will from a fast CPU.

    95% of the performance increase will be in benchmarks like Sandra, realworld CPU beats RAM speed hands down. Running RAM on any kind of divider also introduces extra latency as RAM can only send data down a bus when it's ready to transmit that data.

    I'm not saying give up on getting max RAM speed, rather if it's holding you back, go for your processor first, then maybe try again later. Who knows, the tweaking you do to get stable at 1:1 may just be what's needed to also reach 1100MHz-DDR.

  4. #14
    kick's Avatar
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    Default Re: G.Skill memory for EP45-UD3P

    Yeh either that or see what the memory will do .
    even try out the xmp/epp.
    Are there 2 performance profiles on that memory?..even if you just read the advanced settings and enter them manually..Sandra shows some of them as does everest.

    If this is any use my 800(1.8-1.9v) mem will go to 450 fsb on 4-4-4-12 still under 2.0v
    It will boot in at 460fsb on 4-4-4-12 but doesnt survive much benchmarking and needs 2.1+
    Speeds above that it needs 5 timings(roughly) with voltages back under 2.0v until approx 480 then it starts to need 2.0-2.1, 500 fsb and above closer to 2.2 and it wont do anything much at all over 1010 mem speed,on any multiplier.

    Oh i did get a boot at 1060 using D multiplier and 6 timings and hi volts,but that was a "boot damn you!" run
    On multipliers I found B better most of the time but have a D multiplier running now at 490 for 9gb/s synthetic bandwidth it showed 9.2Gb/s at 500 on the D multi but I cant get it stable.

    Yours is better of course,whether the chips are the same but from the better bin,or totally different I dont know. but thats just "my story"
    Last edited by kick; 05-07-2009 at 03:29 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  5. #15
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    Default Re: G.Skill memory for EP45-UD3P

    Do you have Extreme Memory Profile(X.M.P.) set to Auto or to Disabled?

    On my UD3R, if I leave it Auto, the BIOS picks up the main 4 speed settings from the EPP settings, but all other timings come from the SPD settings resulting in a mixed setup which can't be ideal. I have now set XMP to Disabled and manually set the RAM up according to the EPP values displayed by Memset and Everest.

    Edit:
    Quote Originally Posted by MarktheC View Post
    if I leave it Auto ... all other timings come from the SPD settings resulting in a mixed setup...
    I might have to retract that.
    At least tWR is also coming from the EPP profile, and possibly others but they are being tweaked downwards by the BIOS.
    For the Advanced Timing Control (tRRD/tWTR/tWR/tRFC/tRTP/CR),
    RAM SPD says: 3/3/6/52/3/- and RAM EPP says: 4/4/11/58/4/2T
    XMP=Auto says: 3/3/10/52/3/0 and XMP=Disabled says: 3/3/6/52/3/0.
    Since tWR from the EPP was tweaked down from 11 to 10, is it possible that the others are also coming from the EPP but have been BIOS auto tweaked down also, or have they been copied from the SPD profile? I can't be sure.
    I've reverted back to using the XMP=Auto, but DRAM timing=Manual and setting everything manually...
    Last edited by MarktheC; 05-07-2009 at 04:16 PM.

  6. #16
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    Default Re: G.Skill memory for EP45-UD3P

    Quote Originally Posted by Psycho101 View Post

    There seems to be quite a craze around buying 1066 and above RAM in combination with CPU's that have a respectably high multiplier. You just won't see as much performance from "high speed" RAM as you will from a fast CPU.

    95% of the performance increase will be in benchmarks like Sandra, realworld CPU beats RAM speed hands down. Running RAM on any kind of divider also introduces extra latency as RAM can only send data down a bus when it's ready to transmit that data.

    I'm not saying give up on getting max RAM speed, rather if it's holding you back, go for your processor first, then maybe try again later. Who knows, the tweaking you do to get stable at 1:1 may just be what's needed to also reach 1100MHz-DDR.
    I think you might be right. I've put 2 builds together now and had nothing but problems with 1066 memory on both of them. I was attracted to the g.skill 8800 PIs because it was fast memory and ran at low voltage. My previous build was with crucial 8500 tracers rated at 2.2v and they were too hot to touch. Didn't realise it was going to be such an effort to get stable settings for this memory on this board.

    I'll persist a little longer, then probably drop back to 800Mhz and come back to it later.
    (1) Gigabyte 3DAurora chassis - Gigabyte Ex38-DS4 - Xeon 3110 - Zalman CNPS9500 LED - 2x1GB PC2 8500 Crucial Ballistix Tracer 2.0v (BL12864AL106A) - ThermalTake Cyclo RAM cooler - 2xMSI Radeon HD4670 - Corsair HX 620W - WD 36GB Raptor - Seagate 250GB (ST3250310AS) - Asus DRW 2014LIT - XP Pro SP3 (32bit)
    (2) NZXT Apollo chassis - Gigabyte EP45-UD3P - E8400 - Xigmatek S1283 Red Scorpion - 2x2GB PC2 8800 G.Skill 1.9v (F2-8800CL5D-4GBPI) - Gigabyte GeForce 9600GT - Corsair HX 520W - Seagate 250GB (ST3250318AS) - LG DRW GH22NP20 - XP Pro SP3 (32bit)

  7. #17
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    Default Re: G.Skill memory for EP45-UD3P

    Quote Originally Posted by kick View Post
    Are there 2 performance profiles on that memory?..even if you just read the advanced settings and enter them manually..Sandra shows some of them as does everest.
    CPU-Z only shows one EPP. I'll get the advanced settings as shown by memtest and enter those manually and see how that goes.

    Quote Originally Posted by kick View Post
    On multipliers I found B better most of the time but have a D multiplier running now at 490 for 9gb/s synthetic bandwidth it showed 9.2Gb/s at 500 on the D multi but I cant get it stable.
    This is what I'd like to know. Is it OK to use B multiplier for FSB at 400 and above. The BIOS indicates that B is for FSB 333. I don't really understand why there is different types of multipliers (B, D etc) if it turns out they can be used interchangeably.
    (1) Gigabyte 3DAurora chassis - Gigabyte Ex38-DS4 - Xeon 3110 - Zalman CNPS9500 LED - 2x1GB PC2 8500 Crucial Ballistix Tracer 2.0v (BL12864AL106A) - ThermalTake Cyclo RAM cooler - 2xMSI Radeon HD4670 - Corsair HX 620W - WD 36GB Raptor - Seagate 250GB (ST3250310AS) - Asus DRW 2014LIT - XP Pro SP3 (32bit)
    (2) NZXT Apollo chassis - Gigabyte EP45-UD3P - E8400 - Xigmatek S1283 Red Scorpion - 2x2GB PC2 8800 G.Skill 1.9v (F2-8800CL5D-4GBPI) - Gigabyte GeForce 9600GT - Corsair HX 520W - Seagate 250GB (ST3250318AS) - LG DRW GH22NP20 - XP Pro SP3 (32bit)

  8. #18
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    Default Re: G.Skill memory for EP45-UD3P

    Quote Originally Posted by MarktheC View Post
    Do you have Extreme Memory Profile(X.M.P.) set to Auto or to Disabled?

    On my UD3R, if I leave it Auto, the BIOS picks up the main 4 speed settings from the EPP settings, but all other timings come from the SPD settings resulting in a mixed setup which can't be ideal. I have now set XMP to Disabled and manually set the RAM up according to the EPP values displayed by Memset and Everest.
    I started off with XMP at AUTO but now set the timings manually. I haven't set all the advanced timings manually but will give that a go too.
    (1) Gigabyte 3DAurora chassis - Gigabyte Ex38-DS4 - Xeon 3110 - Zalman CNPS9500 LED - 2x1GB PC2 8500 Crucial Ballistix Tracer 2.0v (BL12864AL106A) - ThermalTake Cyclo RAM cooler - 2xMSI Radeon HD4670 - Corsair HX 620W - WD 36GB Raptor - Seagate 250GB (ST3250310AS) - Asus DRW 2014LIT - XP Pro SP3 (32bit)
    (2) NZXT Apollo chassis - Gigabyte EP45-UD3P - E8400 - Xigmatek S1283 Red Scorpion - 2x2GB PC2 8800 G.Skill 1.9v (F2-8800CL5D-4GBPI) - Gigabyte GeForce 9600GT - Corsair HX 520W - Seagate 250GB (ST3250318AS) - LG DRW GH22NP20 - XP Pro SP3 (32bit)

  9. #19

    Default Re: G.Skill memory for EP45-UD3P

    I don't know about the Pi memory, but I have 8GB of Gskill PC2-8500. I have been able to run stable (24hr Prime) at 3.oGHz, 400x7.5 & 3.4GHz, 400x8.5) with no errors, but I have been careful not to push my memory above 1068MHz.... but to make a comment on theme with your original question, I like my RAM... I especially like the shade of blue they came in, matches my Gigaboard nicely...

    Is there any problem using the B strap for FSB in the 400's
    I think I remember Lsdmeasap saying something about Bstrap wanting more volts than D...?
    It may or may not have been in this thread, I don't remember.

    GL with your overclocking though, sounds like you know what you're doing to me.
    Quote Originally Posted by Alex St. John
    Consider for a moment that what we think of as “intelligence” is the byproduct of a computing architecture that depends on massive parallelism to interact with the world in real time without stalling for progress bars. If our ancestors’ brains had depended on running Vista on current dual-core processors for their survival, they would have been eaten by bears.

    Best Quote Ever...
    Quote Originally Posted by Psycho101
    Obey the one and only rule without question when you overclock.... don't cause a fire. Fires are hot and burny... not good.
    Intel E8400 EO@445x9--Gigabyte EP45-UD3P v1.1 ~ F9--EVGA 9800GT @ 700/1750/1100--8GB Gskill 1066

  10. #20
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    Default Re: G.Skill memory for EP45-UD3P

    Quote Originally Posted by dclayw View Post
    I don't really understand why there is different types of multipliers (B, D etc) if it turns out they can be used interchangeably.
    On my UD3R, I can boot and memtest86+ and Prime95 with 2.66C, but can't even POST with 2.66D...

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