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Opteron 144 Steppings

post #1 of 7
Thread Starter 
I'm a newbie overclocker, planning to buy the new system detailed below. I've done my best to do my homework before posting (searching around this forum and a few others), so excuse me if the answers to my questions are posted elsewhere.

*Opteron 144 S939
*Asus A8N-SLi Premium NF4 S939 DDR400 PCI-E SATA Raid Gbit Lan 8Ch Audio
*1GB (2X512MB) Corsair TwinX PC4400 (550) 168 Pin Non-ECC Unbuffered CAS 2.5-4-4-8
*256MB XFX PCI-E *Extreme* GF7800GT *450 Core 1.05Ghz Mem* (256bit) ViVo 2xDVI
*535W Enermax FMA SLi EG565AX-VE(W)-SFMA (20+4) SLi PCI-E READY aPFC Quiet
*Arctic Cooling Freezer 64 Pro - S754/939/940

1) Steppings for the 144 - does anyone know which are the better steppings? I'd be happy with 2.7 - 2.8 GHz out of this baby with the above cooling, but I've heard the manufacture date is important. Also, of the code (e.g) "CAB2E 0546 BPMW" which parts do I need to pay attention to? I know "0546" means 46th week of 2005, but I'm not sure about the other parts. Having hunted around I have found people saying positive things about 0544, 0528, 0530, 0546, and negative about 0540 (I see The Duke and Amped have already done some nice oc'ing with the 144).

2) This motherboard has a max FSB of 400, with multipliers of up to 9 that gives me an absolute cap of 3.6 GHz! (assuming all other components can be increased to deal with this level). As I said, I'll be happy with around 2.8 GHz. Does anyone have any advice in terms of present oc'ing and future upgradable oc'ing on the above combination of components?

Many thanks in advance

(I checked out the two posts below in particular before writing this one)
http://www.overclock.net/amd-general...ew-system.html
http://www.overclock.net/amd-general...overclock.html

-----

EDIT! - Grammar
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post #2 of 7
Hi there!

Thanks for mentioning me in the post, and welcome to the forum!


First off, rather than the Arctic, I'd suggest the Thermaltake Big Typhoon. It's pretty much the best air cooler one can buy.

My 144 is currently, after re-overclocking because I installed a new PSU, at 2754MHz, with a vcore of 1.612v. I believe I can get it stable at 2808, but 2754 allows me to keep my RAM at its max of 275MHz.

The stepping I have is CAB2E 0546BPMW, so you get an idea of what stepping does what.

Also, I'm not sure what the max vcore of that mobo is, but like I said, my 144 requires 1.612v to be stable at 2.75Ghz. Make sure you can get enough out of it. If not, consider one of the DFI Lanparty boards.


I'm sure that Duke can give some input as well, so I'll leave the floor to him.
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post #3 of 7
Yeah, as Amped said, the Asus board only goes upto 1.55v vcore. If you want to push it further then go for DFI or MSI nF4 boards.

You shouldn't have much trouble with any of the Opterons hitting 2.7Ghz and quite a few of the new CACJE Cpus will do this on virtually stock volts.
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post #4 of 7
Thread Starter 
Thanks for the quick replies! I took a look at the Typhoon, as a secondary consideration I'm going to be using the comp for media i.e. music, dvds and tv/in so I'd like it to be quiet. This typhoon noisey? The name's got it written all over it But obviously noise can't be my #1 priority if I'm OCing....

I've browsed a few different DFI Lanparty boards, the trouble is that the specs don't tell you how much voltage they can actually pass to the CPU. Is this just a matter of experience, or can I find out exactly how much poke they deliver before I buy?

I've been looking at

DFI LANParty nForce4 SLI-DR EXPERT (Socket 939) PCI-Express Motherboard
DFI LANPARTY UT nF4 SLI-DR AMD Athlon 64 Socket 939 Motherboard (currently my favourite pick for price vs performance)
DFI LANPARTY UT nF4 SLI-D AMD Athlon 64 Socket 939 Motherboard

I also saw the post

Quote:
Originally Posted by The Duke
Do 2x1G RAM and enjoy it
On the HD(s). Check the Hard Drives area for the members benchmarks. There are some good pairs there that work very well in RAID0.
http://www.overclock.net/hard-drives...-raid-non.html
The 146 Opty wuld be a good CPU for OCing and gamong. The best steppings

The current best known steppings for the 939 Opty
Sorry, I forgot to add who posted these to give him credit
1.) CABNE any up to 0540
2.) CABYE 0540
3.) CABNE 0540
4.) CABYE other than 0540
5.) CAB2E
6.) CABGE
on this thread. Would it be possible to clarify lines 2 vs 4? They look a little contradictory

Cheers
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post #5 of 7
The Big Typhoon's noise output is only 18db. You'd be hard pressed to hear it in a case, it's just a very large HSF.

The DFI boards can give more vcore than you'll ever need. Well over 2v, which would never be necessary and very dangerous. 1.7v would be considered high for general use on an AMD64.

CABYE 0540s are number 2 on the list, non CABYE 0540s ie. 0545, number 4 on the list.
There are lots of new steppings out now, particularly CACJEs and CAB2Es that are doing very well and one of these 2 is what you'd most likely receive from a stockist now.
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post #6 of 7
Thread Starter 
Ahh I see, so its an ordered list rather than just a list of the best ones...ok got it. I'll check around with a few suppliers and see what steppings they have.

I've been a loyal Asus user up to now, sorry to see 'em go

All going well (i.e. work putting that belated 2005 bonus in my bank account ) I should be ordering this baby in the next few days. Woo!

**EDIT** Still can't type.
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post #7 of 7
Well, if you like ASUS, have you looked at the A8N32-SLi? Those compete with DFI in terms of OCing capabilities. I can't pull the voltages off the top of my head, but I'm sure someone else here knows.
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