Hello,
I've been playing with my opteron 165 for a couple weeks. Here's my setup:
* Opteron 165 - 0551 stepping
* 2x1GB OCZ Platinum EL PC CAS2 memory
* 550 Watt power supply
* DFI Lan Party SLI-DR Expert
* Thermaltake Big Water CPU cooling
I'm not that new to overclocking but I hope to get some help from some of the more experienced Opteron 165 overclockers out there.
I stopped testing the board FSB at 340 because I would never go that high. RAM runs at 206mhz 2-3-2 1T. 225@CAS2.5. Infineon Memory Chips.
Prior to water cooling, I tested Opteron 165 to run stable at 2556 @ 1.475v 2-3-2 1T (195mhz RAM) for 14 hours dual prime.
After water cooling It ran stable for 12 hours in dual prime at 300x9 (2.7ghz) with RAM at 150mhz with 2-3-2 1T @ 1.525v
Thinking I had plenty of room to spare on RAM, I increased the divider up one step (resulting in roughly a 166mhz RAM speed). It wouldn't finish the POST process.
I dropped it back to 1/2 and reduced CAS to 2.5. Again it wouldn't post.
Ultimately, my Opteron is very picky about CAS and multipliers when running at 2.7.
2.7 - 150mhz RAM - 2-3-2 1T = 12 hours stable @ 1.525v
2.7 - 166mhz RAM - 2-3-2 1T = Fails in POST when verifying DMI data
2.7 - 166mhz RAM -2.5-3-2 1T = Fails in POST when verifying DMI data
2.7 - 210mhz RAM - 2-3-2 1T = Boots fine, fails in dual prime95 (1.525v)
-> Yea, what in the world? Won't POST at 166mhz but WILL post at 210mhz with all other factors the same?!?!
Other results:
2.7 - 210mhz RAM - 2-3-2 2T = Boots fine, fails in dual prime95 (1.525v)
2.7 - 210mhz RAM - 3-3-3 1T = Boots fine, fails in dual prime95 (1.525v)
2.7 - 210mhz RAM - 3-3-3 2T = Boots fine, fails in dual prime95 (1.525v)
2.65 - 210mz RAM - 3-3-3-2T = dual prime95 stable (so far) (1.525v)
-> My opteron seems to be picky about CAS2.5 and some dividers, but not all of the highest ones.
-> Through all of this, my temps are: CPU: <= 42c, PWM: <=45c, CHIPSET: <=45c.
Anyone have any suggestions? I think my memory controller is being pushed to it's limits at 2.7ghz.
NOTE: I use memory timings reccomended by my memory maker for this board[/b] - I only tweak the values in: 2-3-2 1T/2T.
http://www.bleedinedge.com/forum/showpost.php?p=145181&postcount=2
Thanks
Twivel
I've been playing with my opteron 165 for a couple weeks. Here's my setup:
* Opteron 165 - 0551 stepping
* 2x1GB OCZ Platinum EL PC CAS2 memory
* 550 Watt power supply
* DFI Lan Party SLI-DR Expert
* Thermaltake Big Water CPU cooling
I'm not that new to overclocking but I hope to get some help from some of the more experienced Opteron 165 overclockers out there.
I stopped testing the board FSB at 340 because I would never go that high. RAM runs at 206mhz 2-3-2 1T. 225@CAS2.5. Infineon Memory Chips.
Prior to water cooling, I tested Opteron 165 to run stable at 2556 @ 1.475v 2-3-2 1T (195mhz RAM) for 14 hours dual prime.
After water cooling It ran stable for 12 hours in dual prime at 300x9 (2.7ghz) with RAM at 150mhz with 2-3-2 1T @ 1.525v
Thinking I had plenty of room to spare on RAM, I increased the divider up one step (resulting in roughly a 166mhz RAM speed). It wouldn't finish the POST process.
I dropped it back to 1/2 and reduced CAS to 2.5. Again it wouldn't post.
Ultimately, my Opteron is very picky about CAS and multipliers when running at 2.7.
2.7 - 150mhz RAM - 2-3-2 1T = 12 hours stable @ 1.525v
2.7 - 166mhz RAM - 2-3-2 1T = Fails in POST when verifying DMI data
2.7 - 166mhz RAM -2.5-3-2 1T = Fails in POST when verifying DMI data
2.7 - 210mhz RAM - 2-3-2 1T = Boots fine, fails in dual prime95 (1.525v)
-> Yea, what in the world? Won't POST at 166mhz but WILL post at 210mhz with all other factors the same?!?!
Other results:
2.7 - 210mhz RAM - 2-3-2 2T = Boots fine, fails in dual prime95 (1.525v)
2.7 - 210mhz RAM - 3-3-3 1T = Boots fine, fails in dual prime95 (1.525v)
2.7 - 210mhz RAM - 3-3-3 2T = Boots fine, fails in dual prime95 (1.525v)
2.65 - 210mz RAM - 3-3-3-2T = dual prime95 stable (so far) (1.525v)
-> My opteron seems to be picky about CAS2.5 and some dividers, but not all of the highest ones.
-> Through all of this, my temps are: CPU: <= 42c, PWM: <=45c, CHIPSET: <=45c.
Anyone have any suggestions? I think my memory controller is being pushed to it's limits at 2.7ghz.
NOTE: I use memory timings reccomended by my memory maker for this board[/b] - I only tweak the values in: 2-3-2 1T/2T.
http://www.bleedinedge.com/forum/showpost.php?p=145181&postcount=2
Thanks
Twivel