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Gigabyte 780g + Opteron 1210HE difficult combo to OC! Please halp?

post #1 of 7
Thread Starter 
Hi, I could use some advice with my latest rig. I'm used to overclocking Intels (oh yes, one of THOSE...)!

CPU: Opteron 1210 HE (90nm, 65W, dual core, 2x1mb L2, 1.8ghz, 9x multi, yada yada)
HSF: AC Freezer 64 w/ some AS5
MOBO: GA-MA78GM-S2H (AMD 780g/Radeon HD 3200 IGP)
PCIe: Sapphire Radeon HD 3450 (will play with hybrid crossfire under Vista later)
RAM: Geil 2x1GB DDR2-800 4-4-4-12 @ the SPD-chosen 5-5-5-15 1.8v (I'll worry about pushing this ram later, too)
OS: XP SP3


I blew it when I bought the opty, forgetting all about max multipliers and thinking that double the cache of a brisbane would make a significant difference, but since then I've read that it's not likely to benefit me much. Anyway now I'm stuck with a 9x multi.

From what I've read, my mobo should pull a decent HTT out of its hat, but I'm having some weird issues. Even with the latest BIOS, in the CMOS setup the CPU multiplier is offered in whole and half-steps up to 8.5x (missing 9, grrr), but using AMD OverDrive the CPU can be set only in whole steps from 5-9x. What the french toast?

Here are my settings:

Disabled CnQ and Virtualization.
HTT ref: 333mhz
HT Link: "600MHZ"(a.k.a. x3) for a resulting 999MHz HyperTransport
CPU: 8.5x (2830.5mhz) 1.275v "DDR 533" (a.k.a. /7 divider) resulting in 404.35mhz memory, close enough
Forced PCIe 100mhz, HT Link width 16-bit, everything else default settings (ram timings, nb volts, etc.).


At default vcore 1.250v she boots to the desktop but crashes when I load CPUz (or anything really) or even browse folders for a minute.

But the slight bump in voltage to 1.275v gives me a stable desktop and Orthos 14 hours stable (at rest, CPUz reports 1.296v - under load CPUz reports the voltage RISING to 1.36v, I'm used to seeing a droop on Intel systems, not a rise.. is this normal??)

BUT then I open SpeedFan at the same time as Orthos and the darn thing locks up/reboots!

SpeedFan does not crash otherwise. I'm also concerned, the northbridge is awfully hot at a constant 86C.. holy crap. Reviews say this is par for the course with this motherboard!

I would like to shoot for 3.0ghz but first I have to figure out why 2.8 isn't stable. Any advice?
post #2 of 7
Thread Starter 
just noticed in CPUz now my ram is reported as 5-4-4 tRAS 10 tRC 14 Command rate 1T... guess I have to lock those down? looks like gigabyte is trying to "help" me overclock.. could this be interfering? (even though those timings should be good with this stuff at 404mhz)
post #3 of 7
Quote:
Originally Posted by lufusol View Post
just noticed in CPUz now my ram is reported as 5-4-4 tRAS 10 tRC 14 Command rate 1T... guess I have to lock those down? looks like gigabyte is trying to "help" me overclock.. could this be interfering? (even though those timings should be good with this stuff at 404mhz)
Lufusol, I wouldn't worry too much about your memory right now all though the CR 1T might be to stressful for the IMC. Change that to 2T. I would put the memory on a divider and concentrate more on the overclock for your processor first. Processor speed out weighs memory frequency speed when it comes to an AMD setup. Leave your CPU multiplier on 9x and start from there. What is the max HTT (reference clock) speed of your chipset?

Let us know

Good luck
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post #4 of 7
Odd though it may be, my AM2+ MB bumps up the vcore too, compensate as necessary.
You may need to bump the chip set or SB and NB voltage... what ever the BIOS offers. Usually the SB is a bit more hungry.
    
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500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
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MS KU462 Natural SS DA750 MS 5 button 
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post #5 of 7
Thread Starter 
Added AS ceramique and a 60mm fan to my chipset/IGP, runs about 6c cooler than before. Would still like to fit a swiftech over it, somehow... those mounting holes couldn't be more impossible.

Quote:
Originally Posted by thlnk3r View Post
I would put the memory on a divider and concentrate more on the overclock for your processor first.
Which divider do you suggest? Seeing as they change dynamically depending on my CPU multi.

Quote:
Originally Posted by thlnk3r View Post
Leave your CPU multiplier on 9x and start from there. What is the max HTT (reference clock) speed of your chipset?
I would love to take your advice, but the ONLY, and I do mean only way I can leave my CPU multi on 9x is by leaving EVERYTHING set to "auto" in the BIOS (therefore no overclocking) OR by using AMD OverDrive which seems to lock up my PC just about every time I make a change.

Am concerned about the significant raise in voltage under load, even at stock frequencies... 1.3+v under load when it's set to use 1.25v... is there a BIOS setting I missed that is dynamically overvolting? Gigabyte is trying to "help" thus causing all my instabilities?

Thanks for your suggestions, please keep them coming!
post #6 of 7
Thread Starter 
Quote:
Originally Posted by The Duke View Post
Odd though it may be, my AM2+ MB bumps up the vcore too, compensate as necessary.
You may need to bump the chip set or SB and NB voltage... what ever the BIOS offers. Usually the SB is a bit more hungry.
I am starting to regret being an early adopter of this board. I was told 3ghz with a good heatsink for my Opteron 1210HE was practically a gimme, and trying to achieve even 2.8 has been nothing but a headache so far.

I'm sorry, no southbridge voltage option. Hope a new BIOS comes out soon to address my poor CPU support but I doubt they'll be able to add SB voltage support if it's not already built into the hardware.

Woefully yours,

-Luf
post #7 of 7
Quote:
Originally Posted by lufusol View Post
Which divider do you suggest? Seeing as they change dynamically depending on my CPU multi.
Lufusol, try DDR2 667 or 533. That should give you plenty of room. Were you able to view the Advanced Options menu by hitting CTRL+F1 in the BIOS?

Good luck
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Athlon II X4 620 Asus M4A785-M Asus 5770 G.Skill 8GB DDR2-800 
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WD3200AAJS Windows 7 Pro Acer AL2216W, Samsung P2770 Corsair 550VX 
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Workstation
(13 items)
 
  
CPUMotherboardGraphicsRAM
Athlon II X4 620 Asus M4A785-M Asus 5770 G.Skill 8GB DDR2-800 
Hard DriveOSMonitorPower
WD3200AAJS Windows 7 Pro Acer AL2216W, Samsung P2770 Corsair 550VX 
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Tagan Black Pearl 
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