[SOLVED] Feedback on OC Xeon X5680

[vot4pedro]

Hi

Recently upgraded old home pc with a X5680 plus other comps ((upgrades are listed in my profile). Based on info here and other forums, below is the 4.2GHz OC setup; however, I've been unsuccessful in getting it past this speed with different combo CPU voltage and BCLK levels. Blue screen during Prime95 running for less than 10min is the failure mode. Max temps reach 65 degrees right before a blue screen failure so I dont think its temp related.

Any help in identifying below setup weak points or possible improvements is appreciated . I dont mind daily driving at this speed but just wondering if mid 4s is possible.

4.2 Ghz BIOS settings.
CPU Cooler, Noctua D15, fan speed: Silent mode (750rpm)
CPU Ratio Setting (Multiplier): x25
BCLK Frequency: 168
DRAM Frequency: DDR3-1347MHz (nominal 1333MHz, 4x2GB)
UCLK Frequency: 2694MHz (x2 DRAM)
QPI Link data Rate: 6063MT/s (lowest value)
CPU Voltage: 1.3125V
CPU PLL Voltage: 1.88V
QPI/DRAM Core Voltage: 1.30V
DRAM Bus Voltage: 1.64
Load line Calibration:Enabled
CPU Spread Spectrum: Enabled
Cinabench scores: CPU=904cb, OpenGL=91fps

 

[william p]

I would ask at Overclock.net X58 Xeon Club. They specialize in those and the answers can be very complex.
https://www.overclock.net/forum/8-intel-general/1489955-official-x58-xeon-club.html
The 4x2 RAM is not correct for X58. It supports 3 channel memory so 6x2GB would run much better.
I have had systems crash when the big fan speeds up and pulls down the MB CPU Voltage. If that's when it happens run the fan straight off of the PSU.
You didn't say what MB,PSU or GPU setup you're running.You could just be running out of Watts due to one of those.

 

[vot4pedro]

I would ask at Overclock.net X58 Xeon Club. They specialize in those and the answers can be very complex.
https://www.overclock.net/forum/8-intel-general/1489955-official-x58-xeon-club.html
The 4x2 RAM is not correct for X58. It supports 3 channel memory so 6x2GB would run much better.
I have had systems crash when the big fan speeds up and pulls down the MB CPU Voltage. If that's when it happens run the fan straight off of the PSU.
You didn't say what MB,PSU or GPU setup you're running.You could just be running out of Watts due to one of those.

Thanks william. Yes. Already have a post over at overclock.net. Thats where I pieced together my current OC setup. Unfortunately, not too many have OCd the X5680 vs other Xeons.

My current hw config is as per below.I initialed installed a used 1pk of 3X2GB to add to my original 3X2GB ram but discoved that 2 sticks were bad so I'm running with 4 total as the system seems to detect them just fine but I can take another stab at ebay for another 6GB pk. No fan spool up issues. The Noctua runs steady throughout.

Thanks

OS: Windows 10 Pro 64bit, Motherboard: ASUS P6T DELUXE (LGA1366),
CPU: Intel
Xeon X5680@ 4.20GHz (OCd),
CPU fan: Noctua D15,
RAM: G.SKILL 8GB (4 x 2GB)
240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Triple Channel Kit Desktop Memory Model F3-10666CL7T (2GB X4),
Graphics: EVGA GeForce GTX 1070 Ti GAMING 08G-P4-5670-KR 8GB GDDR5,
SSD (boot drive): SanDisk Ultra 3D NAND 500GB
Internal SSD - SATA III 6 Gb/s, 2.5"/7mm - SDSSDH3-500G-G25,
HDD: WDC WD10EADS-00L5B1 (1TB SATA II),
PSU: Corsair RM750xW,
Tower: Antec Nine Hundred Black Steel ATX Mid Tower

 

[william p]

I'm certainly not an expert at BCLK X58 systems , but the one thing I see is that those G skill modules have a pretty agressive timing of CL7 @ 1333, and maybe not much headroom to go faster. If you could set them to CL9 which is normal for DDR3 1600 maybe that will help.