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X2 3800 vs. Opty 165 - Any advice wanted!

post #1 of 11
Thread Starter 
Okay, I'm OCing, most likely on air. After as much research as possible I've come up with the following reasons to get one chip or the other:

X2 3800
- runs cooler w/o l2 cache
- about $30-40 cheaper
- new E4 060x chips OC avg 2.6-3.0
- 10x multi
- less likely to have cold bug(?)

Opteron 165
- l2 cache gives a few(?) % points adv
- better binned, less likely to overvolt and die(?)
- famous OCer should pull at least 2.6 stable(?)

My main concern is best performance, but very stable on air, I’m not going for world benching records. Please help me choose and correct me if I’m wrong in any part of the lists.

Also, what are good steppings and with which chip do I have the best chance of getting a good stepping if I order now? Thanks!
post #2 of 11
The 3800+ has 2x512 cache and uses a 10x where as the Opty has 2x1024 cache and uses a 9x!
The additional cache of the Opty equates to a few hundred extra MHz in performance but the 9x can be a bit more daunting to OC and may require a higher RAM divider.
    
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post #3 of 11
Thread Starter 
A small divider would be negligible because of AMD's IMC, right?

Also, what are good steppings and where to get em?
post #4 of 11
Couldn't say on current Best Steppings or which would OC better
Sorry.
Try an Advanced Search in both AMD CPU and AMD Motherboards sections. Perhaps you can dig up some info while waiting for a response
Like this one
http://www.overclock.net/amd-cpus/79...1-8-2-7-a.html
    
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post #5 of 11
id go with the opty 165, mine is stable at 2.8ghz, temps are not the best though, but only because i oc'ed a ghz out of it
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post #6 of 11
Quote:
Originally Posted by masterofthepuppets99
id go with the opty 165, mine is stable at 2.8ghz, temps are not the best though, but only because i oc'ed a ghz out of it
agreed. You can live with a 9x multiplier, it still OC's like hell and has double the cache per core. Id actually even save up for a 170 although thats maybe out of your range.
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post #7 of 11
Thread Starter 
Is it worth another $100 for a 10x multi? Or are there other advantages?
post #8 of 11
Just that you can run 1:1 with your RAM easier.
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post #9 of 11
Quote:
Originally Posted by The Duke
The 3800+ has 2x512 cache and uses a 10x where as the Opty has 2x1024 cache and uses a 9x!
The additional cache of the Opty equates to a few hundred extra MHz in performance but the 9x can be a bit more daunting to OC and may require a higher RAM divider.
I agree that the Cache will greatly help the opteron vs the X2, and as for the 9x on the opty. Well, personally I have seen and have had many chips with 9 multi's and I have found that they can usually score higher scores, because you end up running higher fsb and increasing performance. Now in the long run, if you were going to get a drastic overclock with the X2 than the 10 multi would help, but if you have really nice ram then a 9 multi would probably be best.
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post #10 of 11
I'd say the opty 165. the larger cache will be nice. the opty runs with a slightly lower vcore at stock I believe. I've seen some pretty nice oc on the forms of almost a 1.0ghz increase on very low voltage.

EDIT: Some links to help you out
link
link
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