EP45-UD3R E8500 overclocking

[profJim]

Re: EP45-UD3R E8500 overclocking

The general recommendation is that VTT should be set at least 0.05 - 0.10 volts lower than Vcore.

With LLC enabled, you are able to run with Vcore somewhat lower than the Vcore setting when LLC is disabled.
I've seen a few stable setups running at higher than 4.0GHz where VTT was closer to or equal to Vcore.

You might be able to lower these voltages by tweaking MCH Refenence voltage.
The proper way to do this is:

1. set VTT = 1.20
2. modify MCH Reference to the new value
3. set VTT back to the desired value

It's best if you include this information in your bios settings as:
MCH Reference -------- 0.760V ------ : [xxxx] set to 0.7?? at 1.20 VTT

where xxxx is the value displayed in the bios after you have re-set VTT back to the current setting

Most extreme C2D overclocks that tweak MCH Reference use settings lower than 0.760 (with VTT set at 1.20), such as 0.740, 0.720, or 0.700.

FYI, this post shows Intel's guidelines for the P4 chipset family. With 1.40, you are 6% over the recommendation, which should be safe for now.
I recommend extended stress testing with your current setup. Short term use with your current settings should be fine.
Post your current bios settings and screen-shots after you have completed testing.

[HyperEX]

Re: EP45-UD3R E8500 overclocking

I've deemed 500FSB unattainable after working on it earlier, at least using safe voltages.

Am currently working on a 450FSB template, RAM at 900 for 1:1.

Will post template I'm using soon.

[Chike]

Re: EP45-UD3R E8500 overclocking

arctic-k20 has an almost stable settings, with much lower Vcore(LLC enabled), VTT, and MCH Core.
Have you tried his settings at least, VTT and MCH Core/Reference?
I know no two systems are the same, but my guess you can get stable around those settings.

[HyperEX]

Re: EP45-UD3R E8500 overclocking

My system won't even post on that template. Also, those voltages seem way off, 1GHz clock increase in nearly no VCORE increase. Not just that, but at his CPU VTT of 1.24V shouldn't even be able to reach anywhere near 500FSB. To make my system post consistently, my board required 1.38 CPU VTT.

Also, how is he even running his RAM at 1066 when he's using 500FSB w/ 2.00d multiplier?

Seems like so many things don't add up.

[profJim]

Re: EP45-UD3R E8500 overclocking

With FSB = 450 and memory = 900MHz, system memory multiplier = 2.00B with tighter memory timings should be stable.
Initially, I would use 5-5-5-12 primary memory timings and later try tighter timings, such as 4-5-5-12.
With 4GB of memory, 4-4-4-12 might be stable, but this setting is probably too tight with 8GB.

I'm getting confused working with you and arctic-k20, where you both have 8GB of memory and similar setups.
**edit**

Seems like so many things don't add up.

His Driving Strength settings = 1066 are good, but his posted Memory Frequency = 1066 is a typo. His screen-shot shows that he is running a 1002MHz.
I can't explain his voltage settings, he must have an awfully good cpu, mobo, and memory.

[Chike]

Re: EP45-UD3R E8500 overclocking

My system won't even post on that template. Also, those voltages seem way off, 1GHz clock increase in nearly no VCORE increase.

I have noted he has LLC enabled, this changes things, it is the load voltage that counts not what is set in BIOS.

Not just that, but at his CPU VTT of 1.24V shouldn't even be able to reach anywhere near 500FSB. To make my system post consistently, my board required 1.38 CPU VTT.

Maybe 1.26v then. VTT does not stand for itself and without tweaking MCH/CPU References it may actually cause the need for even higher VTT if set above Vcore.

Also, how is he even running his RAM at 1066 when he's using 500FSB w/ 2.00d multiplier?

His memory is PC-8000 not PC-8500, and with 500FSB and 2.00D multiplier it is set at it's rated spec, DDR-1000.

[HyperEX]

Re: EP45-UD3R E8500 overclocking

Funny, guess what guys. PSU on my box died as I was typing something else for this topic. While I was in the middle of typing, I got a corrupted screen, reached fast for my phone which has a crappy camera, I had to get really close to the screen or else it was hard to see.

I actually had gotten this screen once before, actually only an hour or so before while testing the 500FSB OC - I had initially assumed it was caused due to incorrect memory timing, or due to the fact that VCORE and CPU VTT weren't in the proper range ratio. (I am aware however that when you typically see graphics corruption that it's the video card, but video card is not even a month old yet...and at that time wasn't overclocked)

And to add to that, when I did OC card, I only did it via the CCC using auto-tune, and never did any actual gaming on the OC speeds.

Anyways, after I got the picture, I turned machine off, drained CAPS, powered back on and was greeted with lovely continuous short beeps. As I reached for my motherboard manual, I am thinking, "Dear god, what the hell is this... all my voltages were well within safe levels."

Bottom of the page: Continuous short beeps - Power Error.

Hmm. I reset CMOS using jumper for 1 minute, same error. Strange thing though is that the machine actually seemed to power on while the beep code was going...(Fans were spinning MB phase LED was on, maybe PSU failed just enough to not be able to power video card)

Hopefully it IS just the power supply, as I've had my eyes on another one for a while now.

*sighs*

By the way, if you're not sure of what you're seeing, yes, those are vertical gray lines in parallel running all the way across screen.

[Chike]

Re: EP45-UD3R E8500 overclocking

I'd begin with checking that the video card and power connections are well seated.
Turn off the monitor for a minute, and the usual rest, one stick of memory etc. before I blame the PSU.

[HyperEX]

Re: EP45-UD3R E8500 overclocking

Checked all connections, they were good. I reseated video card anyways, and reset CMOS again.

Same beep code, I just hope it IS the power supply and not the motherboard.

[profJim]

Re: EP45-UD3R E8500 overclocking

You might try booting with a minimal hardware setup:
The Minimalist Boot:
Disconnect everything that isn't required to boot, including:
Hard Drives, floppy drives, cd/dvd drives
Mouse
All USB devices including the mouse and keyboard
All add-in PCI cards.

You want to boot only with your cpu, PS2 keyboard, video card and only 1 memory module. That's it.

If you need a new psu, check out

• Antec TruePower New TP-750, TP-650, or TP-550
• Corsair HX or TX series, the HX cost a bit more but offers somewhat better performance and features than the TX series.

I recently bought the TP-750; superb reviews from JonnyGuru, Hardware Secrets, and PC Perspective.
Best bang for the buck....top tier performance at a bargain price (usually about $105, often has a mail in rebate).

[HyperEX]

Re: EP45-UD3R E8500 overclocking

Just ordered: Newegg.com - CORSAIR CMPSU-750HX 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS SILVER Certified Modular Active PFC Power Supply - Power Supplies

[profJim]

Re: EP45-UD3R E8500 overclocking

^^^^ EXCELLENT choice!!

[HyperEX]

Re: EP45-UD3R E8500 overclocking

New PSU arrived last night, rewired case including replacing a 120MM front fan which had a damaged wire (I had caught the wire on the HDD rail when removing it a while back, and it snapped. These fan wires are about 1mm thick, and are extremely difficult to strip since they're so brittle, I failed a few strips then got it to a point where it was adequate and patched it up with electrical tape for a temporary fix, but this was the perfect time to replace it with a new one).

Once that was finished, had to deal with a fan short - I didn't solve this until morning (one of the fans was double wired). From the time without having access to my main box, I did my research on my laptop; once the system was up and running I had a much better sense of what needed to be tweaked.

After some trial and error, I got the 8x500MHz OC up and running, and this time it seems to have some semblance of stability.

Been running Prime 95 Blend - 2 threads, for about 40 minutes now. The last time I attempted to blend on the above OC, it failed immediately, and system was severely unstable.

Of course this will need more more testing, but I believe I'm making some headway. I will post my template once Blend has ran for at least 5 hours without errors.

P.S. As for me laying down the law on the failed PSU, I'm putting that off indefinitely. When system failed, I was a little worked up and now that I'm seeing a little more clearly, I have better things to do.

Sorry guys!

[HyperEX]

Re: EP45-UD3R E8500 overclocking

Had to deal with a matter, so had to stop the Prime pre-maturely, however it did run for approximately 3 hours (blend) without problems, this template is a baseline for my further tweaks.

4.00GHz (8x500)

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster -------------- : [Auto]
CPU Clock Ratio ---------------------- : [8x]
Fine CPU Clock Ratio ----------------- : [0.0]
CPU Frequency -----------------------: 4.00GHz 

Clock Chip Control
Standard Clock Control
CPU Host Clock Control ----------------- : [Enabled]
CPU Host Frequency (Mhz) --------------: [500]
PCI Express Frequency (Mhz) ----------- : [100] 

C.I.A.2 ------------------------------ : [Disabled]

Advanced Clock Control ------- [Press Enter]
CPU Clock Drive ---------------------- : [800mV]
PCI Express Clock Drive --------------- : [900mV]
CPU Clock Skew (ps) ------------------ : [0]
MCH Clock Skew (ps) ------------------ : [0]

DRAM Performance Control
Performance Enhance ------------------- : [Standard] 
Extreme Memory Profile --- (X.M.P.) ----- : [Disabled] 
(G)MCH Frequency Latch ---------------- : [Auto]
System Memory Multiplier --------------- : [2.00B] 
Memory Frequency (Mhz) ---------------- : [1000]
DRAM Timing Selectable ----------------- : [Manual] 

Standard Timing Control
CAS Latency Time -------- 5 ---------- : [5]
tRCD --------------------- 7 ---------- : [5]
tRP ---------------------- 7 ----------- : [5]
tRAS -------------------- 20 ---------- : [15]

Advanced Timing Control
tRRD ------------------- 4 ----------- : [Auto]
tWTR ------------------- 4 ---------- : [Auto]
tWR --------------------- 8 ---------- : [Auto]
tRFC ------------------- 68 ---------- : [Auto]
tRTP ------------------- 4 ----------- : [Auto]
Command Rate (CMD) ----------------- : [Auto] 

Driving Strength Profiles
Driving Strength --------- : 1066

Channel A
Static tRead Value ------------9-------- : [Auto]
tRD Phase0 Adjustment --------0--------- : [Auto] 
tRD Phase1 Adjustment --------0---------- : [Auto]
tRD Phase2 Adjustment --------0---------- : [Auto]
tRD Phase3 Adjustment --------0---------- : [Auto]
Trd2rd(Different Rank) ---------8-------- : [Auto]
Twr2wr(Different Rank) --------8--------- : [Auto]
Twr2rd(Different Rank) --------7-------- : [Auto]
Trd2wr(Same/Diff Rank) -------9--------- : [Auto]
Dimm1 Clock Skew Control --------------- : [Auto]
Dimm2 Clock Skew Control --------------- : [Auto] 

Channel B
Static tRead Value ------------9--------- : [Auto]
tRD Phase0 Adjustment --------0---------- : [Auto] 
tRD Phase1 Adjustment --------0---------- : [Auto]
tRD Phase2 Adjustment --------0---------- : [Auto]
tRD Phase3 Adjustment --------0---------- : [Auto]
Trd2rd(Different Rank) ---------8-------- : [Auto]
Twr2wr(Different Rank) --------8--------- : [Auto]
Twr2rd(Different Rank) --------7-------- : [Auto]
Trd2wr(Same/Diff Rank) -------9--------- : [Auto]
Dimm1 Clock Skew Control --------------- : [Auto] 
Dimm2 Clock Skew Control --------------- : [Auto] 

Motherboard Voltage Control
CPU
Voltage Types------------ Normal -------- Current -----
Load-Line Calibration ----------------- : [Enabled]
CPU Vcore --------------- 1.25000V ---- : [1.40000] [CPUZ (1.376)]

CPU Termination --------- 1.200V ----- : [1.380V]
CPU PLL ----------------- 1.500V ----- : [1.570V]

CPU Reference ----------- 0.760V ----- : [0.874V]


MCH/ICH
MCH Core ---------------- 1.100V ------- : [1.320V]
MCH Reference ----------- 0.760V ------- : [0.834V]
MCH/DRAM Ref ------------0.900V ------ : [Auto]
ICH I/O -----------------  1.500V ------- : [1.570V]
ICH Core ---------------- 1.100V ------- : [1.200V]
DRAM
DRAM Voltage ------------ 1.800V ------- : [2.100V]
DRAM Termination -------- 0.900V ------- : [Auto]
Channel A Reference ----- 0.900V ------- : [Auto]
Channel B Reference ----- 0.900V ------- : [Auto]

Advanced Settings
Limit CPUID Max. to 3 ------------------ : [Disabled]
No-Execute Memory Protect -------------- : [Enabled]
CPU Enhanced Halt (C1E) ---------------- : [Disabled]
C2/C2E State Support ------------------- : [Disabled]
x C4/C4E State Support ----------------- : [Disabled]
CPU Thermal Monitor 2 (TM2) ------------ : [Enabled]
CPU EIST Function --------------------- : [Disabled]
Virtualization Technology -------------- : [Disabled]

Integrated Peripherals
Legacy USB Storage Detect ------------- : [Disabled]

[Kerberos]

Re: EP45-UD3R E8500 overclocking

I just had an awesome install with some mushkin enhanced blackline, 8 gigs @ 1066. Slapped them, in set voltage, set timing, done! ud3p, e9550
I like em easy... Upgrades too.