EP45-UD3P, 8GB RAM, Vista64???

[SkaarjMaster]

Here's what I think his bios settings should be set at and some I'm not sure about:

Robust Graphics Booster: Auto
CPU Clock Ratio: shows 10X
Fine CPU Clock Ratio: shows +0.0
CPU Frequency: shows 2.00GHz (200x10)

CPU Host Clock Control: Enabled
CPU Host Frequency (Mhz): 200
PCI Express Frequency (Mhz): Auto
C.I.A. 2: Disabled

Advanced Clock Control: leave all at default (Auto)

Performance Enhance: Turbo (this is the setting I have but maybe he should set to Standard; will try Standard if problems)
Extreme Memory Profile (X.M.P.): Disabled
(G)MCH Frequency Latch: 200 MHz
System Memory Multiplier: Manual > 4.0
Memory Frequency (Mhz) : shows 800
DRAM Timing Schedule: (try auto first, then manual if timings don't look right)
(he says it shows 5-5-5-15, but memtest shows 5-7-7-24)

- everything else would be default, except 2.100V for DRAM voltage when running higher speeds and down to 1.9V for lower speeds.

How does that look? I'm still not sure about some of those settings for this underclock. Can someone let me know exactly what to do here? Thank you.

Also, once the CPU Host Freq. is set to 200, should I change the multiplier (CPU Clock Ratio) to something like 13.3 so the CPU frequency is running at least at 2.66GHz? (NEVERMIND, it looks like the highest the CPU multiplier can go is 10X; I found that out late last night and forgot to change this thread). Changes are done for now.

[BoombasticSloth]

He's flashing to the F9 bios this afternoon.

Whoa!!! Hold up!!! Make sure he is running the system stable with no more than 2 sticks (in your brother's case) before flashing the bios. The last thing he/you want to happen is to have a glitch happen during the flash bios. Don't oc and make sure it passes memtest with whatever memory arrangement he is doing before flashing the bios.

Hope it works out.

[BoombasticSloth]

SkaarjMaster: I am having a little difficulty understanding your bios setup. The e8600 chip only has a max cpu multi of 10x, so 13.3 is not doable. Why is the host frequency set at 200 when the native is 333 for your chip (333x10=3333mhz, or 3.333 ghz)? Lock the pci-e at 100 is preferable. Then try to latch the MCH to 333? This way even if you are using a memory multi of 2.00X, your memory will only run at 666mhz which is less than 800mhz. Why so much vdimm at 2.1v when your running such a low memory speed? Do those corsairs's need 2.1v at 800mhz at 5-5-5-15? If they do.... wow. 1.8v-1.9v for less than 800 should be more than enough. Then again I haven't researched your ram so find out what spec those rams are rated for and what vdimm.

(don't mean to rag at you but those bios settings are a mess )

Can you please post a more complete bios template for MB Intelligent Tweaker (MIT)? I think the problem are rooted from the bios settings.

[BoombasticSloth]

Here is a template for the ud3p. Try these settings. check your vid. 1.20v?

Run a few passes through memtest.
All we are trying to do is to get the cpu at stock speed and memory below stock .

Good luck.

E8600 333 X 10 = 3333 MHz BIOS

Robust Graphics Booster.........................[AUTO]
CPU Clock Ratio.................................[ 10 ]
Fine CPU Clock Ratio............................[ 0.0 ]
CPU Frequency ...........................[333X10 ]

******Clock Chip Control******

CPU Host Clock Control..........................[ Enabled ]
CPU Host Frequency (Mhz)........................[ 333 ]
PCI Express Frequency (Mhz).....................[ 100 ]
C.I.A 2 ..................................................[Disabled]

******Advanced Clock Control******
(can't remember these settings off the top of my head, try auto)

CPU Clock Drive.................................[ auto ]
PCI Express Clock Drive.........................[ auto ]
CPU Clock Skew..................................[ auto ]
MCH Clock Skew..................................[ auto ]

******DRAM Performance Control******

Performance Enhance .............................[Standard]
Extreme Memory Profile (XMP)....................[ Disabled ]
(G) MCH Frequency Latch.........................[ 333MHz ]
System Memory Multipler.........................[ 2.00B or D ]
(B or D, can't remember off the top of my head, look to the right window/screen on the bios to determine)

Memory Frequency 800...........................[ 666 ]
DRAM Timing Selectable..........................[ Manual ]

CAS Latency Time................................[ 5 ]
tRCD............................................[ 5 ]
tRP.............................................[ 5 ]
tRAS............................................[ 15 ]

******Advanced Timing Control******

tRRD............................................Auto
tWTR............................................ Auto
tWR............................................. Auto
tRFC............................................ Auto
tRTP............................................ Auto
Command Rate (cmd)..............................[ 2 ]

******Motherboard Voltage Control******

Load-Line Calibration [Disable]
CPU Vcore [ 1.20? ]...................[ 1.20 ]
CPU Termination [ 1.20 ]...................[ 1.20 ]
CPU PLL [ 1.50 ]...................[ 1.50 ]
CPU Reference [ 0.760 ]...................[ 0.760 ]

MCH Core [1.1 ]...................[ 1.1 ]
MCH Reference [0.760 ]...................[ 0.760 ]
MCH/DRAM Refernce [0.900 ]...................[ 0.900 ]
ICH I/O [1.500 ]...................[ 1.50 ]
ICH Core [1.100 ]...................[ 1.10 ]

DRAM Voltage [2.1 ]...................[ recommend 1.9v but us 2.1v if your spd is 2.1, remember your memory is only running 666mhz < 800 ]
DRAM Termination [0.900 ]...................[ Auto ]
Channel A Ref [0.900 ]...................[ Auto ]
Channel B Ref [0.900 ]...................[ Auto ]

******Advanced BIOS Features******

Limit CPUID Max to 3............................[ Disabled ]
No-Execute memory Protect.......................[ Disabled ]
CPU Enhance Halt (CIE)..........................[ Disabled ]
C2/C2E State Support............................[ Disabled ]
C4/C4E State Support............................[ Disabled ]
CPU Thermal Monitor.............................[ Disabled ]
CPU EIST Function...............................[ Disabled ]
Virtualization Technology.......................[ Disabled ]

[SkaarjMaster]

Yes, the system was stable with 2 sticks before, he flashed the bios before memtest but memtest turned out fine anyway.

OK, but this leaving the CPU at 3.33GHz and underclocking the RAM below 800MHz, correct? I was thinking we wanted the RAM and memory to run at the same speed and so I figured set the CPU at 200 and the RAM at 800. Are you saying that all we need to do is underclock the RAM only and leave the CPU alone? Won't this result in a huge discrepency in the clock speeds and result in an unstable system.

EDIT: he just finished memtest with the settings I have above and no errors. I'll change the settings I quoted above to what he has now. He's trying the Windows Memory Diagnostic tool now, then he's trying PC Wizard.

BoombasticSloth, we're talking about trying some settings between what we have now and what you suggested and working our way up to them. You're probably right on the memory voltage, so we'll bring it down to 1.9V for these lower speeds. I'll let you know what we try next.

[BoombasticSloth]

There is nothing wrong with running your ram at 666. You will be running at 1:1. It should be less taxing on your memory, and your whole system for that matter. Seeing as your having problems with the corsair memory, this should be easier for your ram to handle. YOu might even be able to overcome the 4 stick limitation your brother is experiencing.

[edit:] with your current fsb at 200, and your latch at 200 and using a 4.00X multi, your underclocking your e8600 from 3.33ghz to 2.00ghz so you can run your ram at its rated speed of 800. Frankly, I would rather give a higher priority to my more expensive cpu and run it at least at its rated speed with the suggested settings above where I run my cpu at 3.333 ghz and underclock my cheap ram to 666mhz. Easier on the ram and guess what, your running at 3.333ghz vs 2.000 ghz. The answer should be clear. FSB:Mem, 333:333, or 1:1. [end edit]

If I had your cpu, and memory, I would be running at least, 400 x 10 = 4 ghz, cpu host frequency at 400, memory at 400, mch latch at 400, system memory multiplier at 2.00D so that your memory is running 400x2=800, up the vdimm to 2.1v if that is your spd requirement for your ram, 5-5-5-15, vcore at 1.265v +_ , mch at 1.30v, ich I/O at 1.30v, etc.

Your cpu should be able to do this easily without skipping a beat. Again 1:1.

[SkaarjMaster]

The 200-400 thing that we tried worked and the Windows Mem thing tested fine also (expected with such low settings though), but we ran PC Wizard global test and the scores weren't even close to mine (some 10 times lower, and yes I know these scores aren't really comparable on a Vista64 system but he's using it for now). So it looks like it's working, but obviously a little too slow.

We then tried the 333-666 thing you suggested with the exact same detailed settings you suggested above and it worked. The system booted up fine, he then changed some of his unrelated bios settings to what they should be and I think he's going to run with this. The PC Wizard settings came out slightly lower than what I'm running with my SkaarjMasterDuo system in my sig (even though not really comparable it is somewhat expected when I'm using XP and only 2 sticks of RAM). Anyway, he ran memtest last night and I'm sure it will test fine.

Thanks for all the help and both of us appreciate it. We could try the 400-800 thing you also suggested, but he's using the stock Intel HS in a case that really is not cooled like it really should be so I suggested he not try this as it could be rough on his CPU. If he had a Noctua HS and a better cooled case, then I figure we could try this but it works fine right now and he's running 1:1 like Intel likes. Next time I'm at his house, we're going to try 2 sticks in slots 2 and 4 with the same bios settings as me and see what the PC Wizard results are and compare to the 4 sticks ones.......should be interesting. We will, of course, keep track of which sticks are where and write down all the bios settings that work now before we do this of course.

[BoombasticSloth]

That is good to hear dude. Glad it is working out.

Oh one other thing, if your running the memory at 666 mhz, you might even be able to tighten the timing down to 4-4-4-4-12. Doesn't hurt to try for lower latency.

[gamingaccess]

That is good to hear dude. Glad it is working out.

Oh one other thing, if your running the memory at 666 mhz, you might even be able to tighten the timing down to 4-4-4-4-12. Doesn't hurt to try for lower latency.

I want to learn about memory and this is the best post I found

I'll appreciate if I can get help

1) why is low latency important? what is mem latency?
2) why a 1:1 ratio?

I currently have
333 Mhz CPU
767 Mhz MEM

So that would be

333x2= 666 <=> 767

I am not with a 1:1 ratio

I installed 8GB of RAM, eVGA nForce 730i/GeForce 9300
Worked fine, mem running at 800Mhz, CPU at 3.5Ghz (stock speed is 2.8Ghz)

[SkaarjMaster]

1) you better look these up as my explanation would probably only confuse you and might not be exactly correct

2) a 1:1 ratio would mean the memory and CPU are running at the same speed and you don't have anymore delay than necessary. This may not matter on a system that's extremely fast to begin with but can be annoying on slower systems.

Unless Bombastic Sloth chimes in to explain your situation, I would just try to deduce what you're dealing with from what's in this thread; unless you started another thread already of course.

[SkaarjMaster]

I know this is a huge bump, but my brother just gave this computer (see 1st post in this thread for specs; yes, it has the same MB and some other stuff as my main one in my specs below but his is running Windows 7 64-bit) to my son and is going out-of-town for a while and I now need to get it running. Was having trouble and I just finally got it running again without two external HDs and strange sound card thing. Just noticed the CPU was running at 72C, so that's a little high so I'll reseat it with AS5 before I continue. He had it in storage for about 6 months before he got it out about a month ago.

Just noticed in CPU-Z that the RAM shows up as PC2 6400, so maybe that's part of the reason I had so much trouble 4 years ago. Apparently, he was supposed to get the same RAM, but it was not.

1. Anyway, this thing doesn't even recognize the two external USB HDs. Any ideas why? Any ideas what I should set the integrated peripherals in the BIOS for this to work?

2. It also has a PCI card for the sound card with a firewire connection on the outside. The external device is an RME Hammerfall DSP Multiface and the latest drivers from last month are installed. The computer does not like this either for some reason. Any ideas on the correct BIOS settings so this will work?

Thank you any help and I should have the CPU reseated mid-week to test stuff out. And the MB is revision 1.1 and running F9 bios.
ONLY answer in this thread instead:
http://forums.pcper.com/showthread.p...e-EP45-UD3P-MB