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Advice on "final" OC (hopefully)

post #1 of 3
Thread Starter 
Just needed some opinions. Feeling satisfied with the current OC but I'm feeling jipped from all the readings from this website. Many people seem to be getting my speeds on stock voltage, which makes me

My chip seems to love vcore. I'm at 1.45v currently to stabilize 3.6 ghz. 3.7 needs 1.5v and 3.8 needed 1.55v to stabilize for longer than an hour but I pulled back due to temps.

Stability testing was 24 (usually more since I had a few late nights at work) hours of prime95 (task bar set highest priority) with Kombuster running.

Well to my info,

X4 955 BE c3 @ 3.6 at 1.45v
NB-freq @ 2600 at 1.4v
NB volts @ 1.12 (still can't figure out if it helps or not, currently figure an extra can't hurt since I installed a NB fan)
Ripjaws CL9 1600 @ 1333 7-8-7-24-34-1T @ 1.6v

Stock (200) ref clock. My motherboard hates any FSB higher than 210. My ram hates lower dividers but seem fine with higher dividers/more voltage till 1800 freq (with all other setting pulled back to stockish). Anything over 1333 mhz requires more CPU-NB voltage and I feel I'm almost at the wall there.

Motherboard is a Gigabyte 870a-UD3 rev 2.1 flashed to F5a (beta) bios.

http://valid.canardpc.com/show_oc.php?id=1627067

My max load was 55 degrees C after 8 hrs of prime95 but recently installed an extra fan on my Hyper 212+ into push/pull config (and hours of playing around with the case fans) and it seems I dropped to a max load temp of 53 degrees C.

Wondering if that gives me any leeway. I want love to take advantage of the cold weather a bit more.
Edited by evilferret - 1/29/11 at 11:56pm
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post #2 of 3
Thats a bit odd, you should be able to get 3.6ghz at a lower voltage. Anyway, if your chip doesnt support it, there is nothing you can do about it. The cpu-nb voltage for 2600mhz should be much lower than that..... I believe 1.3 should be more than enough. If you have tested with that and found it unstable, then there is once again something you cant do anything about. The memory settings are fine.
Lastly, if 3.6ghz (1.45v) gives you 55c (now 53c) then 3.8ghz (1.5v) should generate something in the vicinity of 60c. This is the one for you (If you must OC further). If what you said about your mobo fsb was right then forget about getting 3.8Ghz. The heat would be too much, you can get a WC setup for it though. Oh, almost forgot, dont touch the nb voltage.

Another thought: Try out stability test at 3.6GHz with 1.4V and this time keep the HT at 1800MHz (default 2000MHz). If it is found stable, then lower the cpu-nb a tad bit too, try P95 blend again. Continue this process ( If it is a success in the first place).
    
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post #3 of 3
Thread Starter 
Well I'm not sure if I'm something is holding me back.

All the people with same NB-freq/NB voltage seems to running lower but I can't get it 24 hr prime95 stable with it any lower voltage.

I can loosen my timings and put it to 2t and can run the same NB-freq at 1.375v's. Again any lower and BSOD at the 12+ hr range in prime95.

Still seems high since most people are running 1.3-1.35v's (unless they aren't large FTT stable).

Actually with stock NB-freq I can push 3.6 on stock voltage and 3.8 at 1.45v's and a bump in CPU-NB voltage. I just want to keep my 2600 NB-freq.

HT has always been stocks (or as close as possible). I can't seem to find any pattern to voltage needs for HT up/down. Tested when first gotten the board, trying to get a baseline.

So just call this the limits of my chip? Guess I shouldn't expect so much from a budget rig.
Edited by evilferret - 1/30/11 at 12:25pm
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Cosair H100 Windows 7 Pro x64 Xstar 1440p Realforce TKL 
PowerCaseMouseAudio
Seasonic x750 Arc Mini RAT7 Fiio E10 
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Phenom x4 955 BE Gigabyte 870a-UD3 XFX 6870 4 gig G-skills 1600 mhz CL9 
Hard DriveOptical DriveOSMonitor
64 gig Microcenter SSD / 1TB Samsung F3 Random DVD-RW W7 64 Bit Ultimate Asus VH236H 
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CPUMotherboardGraphicsRAM
I7-2600k Asus Maximus Gene-Z Zotac 970 32 gig (4x8gig) Cosair Dominator 1866 CL9 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 830 - 128 gig VelociRaptor 300gig Random Toshiba 3TB Liteon 24x DVD-RW OEM  
CoolingOSMonitorKeyboard
Cosair H100 Windows 7 Pro x64 Xstar 1440p Realforce TKL 
PowerCaseMouseAudio
Seasonic x750 Arc Mini RAT7 Fiio E10 
CPUMotherboardGraphicsRAM
Phenom x4 955 BE Gigabyte 870a-UD3 XFX 6870 4 gig G-skills 1600 mhz CL9 
Hard DriveOptical DriveOSMonitor
64 gig Microcenter SSD / 1TB Samsung F3 Random DVD-RW W7 64 Bit Ultimate Asus VH236H 
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U9BL Cosair 750 TX CoolerMaster 690 II 
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