s939 Opteron CAB2E Overclocking Thread

[Avalon]

Originally posted by: adamcz28
Anybody know what the max safe voltage is for these opterons?(with air cooling)

My rule of thumb has typically been +.2v for air cooling, but I'm very conservative compared to some. What is stock on the Opteron? 1.3v, or 1.4v?

Anywho...thanks a bunch for your reply, I'll go ahead and add you to my OP. I've got mine sitting in a box on the floor. My SI-120 never came in today, and I had to work all evening, so I never bothered to take it out of the box. I also got my second GF 6200 PCI-e card as well, so that gives me something else to play with.

You're off to a great start on that bad boy.

:thumbsup:

 

[losershot]

send in your clocks!

 

[coomar]

yeah i'm tired of all these "superpi stable" overclocks at xtreme

 

[Avalon]

CPU/Stepping: Opteron 144 CAB2E 0540 FPMW
Max Stable OC: 2.7ghz @ 300HTT
Voltage: 1.6v
Stability Test: Prime95 small FFTs
Mobo: DFI NF4 Ultra-D
PSU: Enermax 460w 33A/12v 24pin PSU
Memory: 2x512MB Mushkin Blue C2 @ 193mhz 2-3-3-7 1T w/133mhz divider
Cooling: Thermalright SI-120 w/120mm Sunon 85CFM fan
Case/Case Cooling: CM Cavalier w/120mm Sunon exhaust, open side panel, 80mm intake
Ambient room temp: 79F
CPU Idle/Load temps: 38C/50C

Boo.

 

[Rustler]

CPU: CABYE 0540 Stock voltage 255x11 2809MHz on the third boot, had to flash to the 1015 bios to get the board to recognize the processor.......awesome!

 

[coomar]

avalon whe have close to the same system, same ram, mobo, enermax 485w, xp-120

 

[Avalon]

Originally posted by: coomar
avalon whe have close to the same system, same ram, mobo, enermax 485w, xp-120

We know the good stuff when we see it
Seeing as how I had a pretty subpar overclock (I knew it was going to be bad when I couldn't boot at 2.25ghz at stock volts), I ordered an Opty 146. In a couple days, I'll get to try again

 

[coomar]

tankguys still have opteron 146's in stock?

 

[Avalon]

No, but they told me they were shipping Monday.

 

[Rapier]

Originally posted by: coomar
tankguys still have opteron 146's in stock?

I ordered a 146 from them last Tuesday. The chip came in yesterday and shipped today. Its a CABYE 0540

 

[DrMrLordX]

Originally posted by: Avalon
CPU/Stepping: Opteron 144 CAB2E 0540 FPMW
Max Stable OC: 2.7ghz @ 300HTT
Voltage: 1.6v
Stability Test: Prime95 small FFTs
Mobo: DFI NF4 Ultra-D
PSU: Enermax 460w 33A/12v 24pin PSU
Memory: 2x512MB Mushkin Blue C2 @ 193mhz 2-3-3-7 1T w/133mhz divider
Cooling: Thermalright SI-120 w/120mm Sunon 85CFM fan
Case/Case Cooling: CM Cavalier w/120mm Sunon exhaust, open side panel, 80mm intake
Ambient room temp: 79F
CPU Idle/Load temps: 38C/50C

Boo.

Thanks for going to the trouble of reporting on the chip anyway. It seems like the CAB2E chips are hit-and-miss.

 

[andrewbabcock]

Originally posted by: Rustler
CPU: CABYE 0540 Stock voltage 255x11 2809MHz on the third boot, had to flash to the 1015 bios to get the board to recognize the processor.......awesome!

What are you cooling it with if i may?

 

[Avalon]

Originally posted by: DrMrLordX

Originally posted by: Avalon
CPU/Stepping: Opteron 144 CAB2E 0540 FPMW
Max Stable OC: 2.7ghz @ 300HTT
Voltage: 1.6v
Stability Test: Prime95 small FFTs
Mobo: DFI NF4 Ultra-D
PSU: Enermax 460w 33A/12v 24pin PSU
Memory: 2x512MB Mushkin Blue C2 @ 193mhz 2-3-3-7 1T w/133mhz divider
Cooling: Thermalright SI-120 w/120mm Sunon 85CFM fan
Case/Case Cooling: CM Cavalier w/120mm Sunon exhaust, open side panel, 80mm intake
Ambient room temp: 79F
CPU Idle/Load temps: 38C/50C

Boo.

Thanks for going to the trouble of reporting on the chip anyway. It seems like the CAB2E chips are hit-and-miss.

Well, it's odd. Every CAB2E I've seen has done 2.8ghz on air cooling at 1.55v, and I don't think I've seen more than one or two worse than that. Mine at 2.7 @ 1.6v just seems really bottom of the barrel. Hopefully my luck will change with my 146.

I mean, sure, a 2.7ghz Opteron is pretty sweet, no doubt...but I want the magic 3 number
My friend did 3.05 with his CABYE 0540 he got just last week from Tankguys. It was a 146 CABYE 0540FPAW.

 

[Solema]

I just got my 146 CAB2E FPMW in and I am currently priming at 2700MHz at 1.4v, though ITE SMART reads CPU at 1.36v. I've been having trouble getting Windows to even boot at anything higher, voltage or not. Is it possible I could have hit my ceiling? While I'd love to hit 3.0, I'd settle for 2.8, or FX-57 speed. I'm running a Zalman 7700Cu and memory dividers to keep my RAM close to DDR400 for the time being. I'm running a DFI SLI-DR with the 6.23-3 BIOS as well.

 

[Avalon]

Originally posted by: Solema
I just got my 146 CAB2E FPMW in and I am currently priming at 2700MHz at 1.4v, though ITE SMART reads CPU at 1.36v. I've been having trouble getting Windows to even boot at anything higher, voltage or not. Is it possible I could have hit my ceiling? While I'd love to hit 3.0, I'd settle for 2.8, or FX-57 speed. I'm running a Zalman 7700Cu and memory dividers to keep my RAM close to DDR400 for the time being. I'm running a DFI SLI-DR with the 6.23-3 BIOS as well.

Well, since you're already at 270HTT, I'm assuming your SATA port being used for your drive is locked, so that's fine. Memory dividers, good. Are you lowering your HTT multiplier enough?

Check and see what your board's max HTT is. Drop your chip's multiplier, and try going higher than 270. Also make sure Spread Spectrum is disabled.

If you're priming at 1.4v at 2.7ghz, you DEFINITELY have more room in that chip, so there must be some pesky setting or something else being overlooked. I'm sure you'll get it. Good luck! Fill my little overclocking form out when you get the kink worked out

:thumbsup:

 

[jpetermann]

Sorry Avalon, just saw your request. Here is a little info!


CPU: 146
Stepping:CABYE 0540
Overclocked speed: 3.0
CPU voltage:1.48
Idle temp:36
Load temp:51
Cooling: Water
Motherboard: DFI NF4 UT SLI-D
Ram: 2x1GB Corsair 3500LL
Ram size: 2gb total
Ram timings: 2.5-3-3-6
Ram divider:166
Ram voltage: 2.8
PSU: OCZ Powerstream 600
Case Coolermaster Stacker
Ambient room temp: 72*f

And my screen shots of stability tests:

http://i4.photobucket.com/albums/y150/pastorjay/3g24h.gif

http://photobucket.com/albums/y150/pastorjay/?action=view&current=3gspi.gif

 

[Rustler]

andrewbabcock

I am at 3GHz now stable and testing bumped the voltage to 1.39V 273x11, idle temps west from 31-32 to 33-34 loaded 44-45C...killer.


XP90C same as my signature.

 

[Solema]

Originally posted by: Avalon

Originally posted by: Solema
I just got my 146 CAB2E FPMW in and I am currently priming at 2700MHz at 1.4v, though ITE SMART reads CPU at 1.36v. I've been having trouble getting Windows to even boot at anything higher, voltage or not. Is it possible I could have hit my ceiling? While I'd love to hit 3.0, I'd settle for 2.8, or FX-57 speed. I'm running a Zalman 7700Cu and memory dividers to keep my RAM close to DDR400 for the time being. I'm running a DFI SLI-DR with the 6.23-3 BIOS as well.

Well, since you're already at 270HTT, I'm assuming your SATA port being used for your drive is locked, so that's fine. Memory dividers, good. Are you lowering your HTT multiplier enough?

Check and see what your board's max HTT is. Drop your chip's multiplier, and try going higher than 270. Also make sure Spread Spectrum is disabled.

If you're priming at 1.4v at 2.7ghz, you DEFINITELY have more room in that chip, so there must be some pesky setting or something else being overlooked. I'm sure you'll get it. Good luck! Fill my little overclocking form out when you get the kink worked out

:thumbsup:

Thanks for your help Avalon. My current HTT multi is set to 3. Should I reduce it to 2.5? Also, my DFI board has so many other OC settings I've never heard of that I am really lost as to how to go further. Any DFI SLI-DR owners out there willing to help me out?

 

[rajs]

Hi -- I just got an update from TankGuys on an order and had to cancel -- thank god they are good about that stuff ... I caught it before it shipped.

In their update they stated they received a shipment of AMD Opteron 146's ... They got 4 CABYE stepping CPUs and 36 CAB2E stepping CPUS.

The one that they were going to ship to me ... based on where I was in their queue would have been a CAB2E 0540 FPMW.

Take care,

- raj

 

[xenolith]

Why did you cancel, rajs? the 146 CAB2E 0540 is a very good stepping. By what I've seen, they're getting better results than the 144 CAB2E's, and are arguably just as good as CABYE 0540 and CABNE 0528/0530.

 

[Avalon]

Originally posted by: xenolith
Why did you cancel, rajs? the 146 CAB2E 0540 is a very good stepping. By what I've seen, they're getting better results than the 144 CAB2E's, and are arguably just as good as CABYE 0540 and CABNE 0528/0530.

I got the same email that rajs did, and was also told that I would be getting one of the CAB2E's as well, which disappointed me greatly. I'm going to see what I can do to get a CABYE from there. I may possibly wait if it guarantees me getting such a chip. If there is nothing I can do...well, I don't want to cancel and cause TG to suck up the fees. They're a great outfit. I'll just grin and bear it, and see where my chip lies. I'm really hoping to hit more than 2.7 prime this time.

 

[Solema]

Raj and Avalon, what day did you guys put in your 146 orders? I ordered a 146 from Excaliberpc.com on the night of 11/13 and got a CAB2E. I just want to know if I made a mistake by not ordering from TankGuys on that day. Right now I am sitting at 2.7GHz at 1.4v. I am really really hoping to get at least 2.8 out of this chip. I think I need to tweak some more, as I can boot and operate Windows (surf, IM, etc) at 3GHz, on 1.4v.

 

[VStrom]

Originally posted by: Avalon

Originally posted by: coomar
it seems we got the throw the dice stepping

DFI streets opinion of steppings

Single Core Steppings: The list below is a general guide to the strength of steppings from best to worst (as determinded by their probability of reaching 3GHz):

1. CABNE 05xx (excluding 0540)
2. CABYE 0540
3, CABNE 0540 / CABYE 05xx (excluding 0540)
4. CAB2E 05xx
5. CABGE 05xx

It should be known that CAB2E's are more variable than other steppings. They are a bit hit or miss, a fact which diminishes their probability of hitting 3GHz. Many do, but many are stuck below 2.75. This assessment will be reviewed periodically as more info becomes available.

Let's hope this isn't the case for our chips shipping this week
Good luck to everyone receiving theirs.

Anyone know the stepping hierarchy for the dual cores?

 

[Elfear]

Originally posted by: Solema
Raj and Avalon, what day did you guys put in your 146 orders? I ordered a 146 from Excaliberpc.com on the night of 11/13 and got a CAB2E. I just want to know if I made a mistake by not ordering from TankGuys on that day. Right now I am sitting at 2.7GHz at 1.4v. I am really really hoping to get at least 2.8 out of this chip. I think I need to tweak some more, as I can boot and operate Windows (surf, IM, etc) at 3GHz, on 1.4v.

Thanks for posting that Solema. I just got my order confirmation from Tankguys and I will be recieving the same stepping as you. If Windows is stable for you @1.4V than I'll bet with some extra volts it'll be Prime stable. Pretty sweet results for a CAB2E.

 

[Hacp]

Originally posted by: Solema
Raj and Avalon, what day did you guys put in your 146 orders? I ordered a 146 from Excaliberpc.com on the night of 11/13 and got a CAB2E. I just want to know if I made a mistake by not ordering from TankGuys on that day. Right now I am sitting at 2.7GHz at 1.4v. I am really really hoping to get at least 2.8 out of this chip. I think I need to tweak some more, as I can boot and operate Windows (surf, IM, etc) at 3GHz, on 1.4v.

1.4? That voltage is way too low . 1.55 for single cores.