What is the best/cheapest 939 opteron for overcocking?

SpeedZealot369

Platinum Member
Feb 5, 2006
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Hey guys, I just joined the forums and learned so much already, every1 is so smart here, I found out things I never even knew existed. Anywayyy I currently have a AMD64 3200+ (2ghz, 800fsb) and I saw what people do with opterons with air cooling. So which processor has best price/performance ratio with stock air oc'ing in mind?

 

Sqube

Diamond Member
Dec 23, 2004
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Stock aircooling probably isn't going to get you very far. If you're willing to go far and you get a good stepping, you can hit 3.0 GHz on a 144/146.
 

Avalon

Diamond Member
Jul 16, 2001
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The 144's have been extremely hit or miss in my experience. They range anywhere from 2.6 to 3.0, in which the latter is an extreme rarity. The 146's are much more consistent, where most decent chips will do 2.8, some making 2.9, and a good small portion making 3.0

Only problem is the new pricing of these chips are fairly expensive now. A 146 will set you back $215, but is probably still a better buy than whatever equivalent A64 you could get for that price.
 

Fallengod

Diamond Member
Jul 2, 2001
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Still 2.6ghz on a 144 is plenty of speed... Thats what I run my 144 at. They are hit or miss but I think you still get plenty of oc out of them. Best bang 4 buck imo. I got my 144 for $140 shipped. I can get 2.8ghz with more volts but I choose less heat/volts and run it at 2.6.

Youre right though, for other people, things are different now cause of the price increase.
 

SpeedZealot369

Platinum Member
Feb 5, 2006
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Ok, well even 2.6ghz is like an fx55 right? not bad for less then $250. Sounds like I'm due for either one of those (if I can get there with stock air cooling). But there has to be other differences between athlon64 and opteron processors, like maybe cache size or something?
 

Fallengod

Diamond Member
Jul 2, 2001
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Thats about what they went for before the price increase. Watch FS/T forums on this and other websites. I do alot of forum shopping. I bought a brand new retail cacje off someone, thats where I got it. One just sold a few days ago here for $140. Ive bought about 4 of them for $140 in the past few months. Sold the rest on ebay and kept one.

Youll have a hard time finding one these days for less than $180+ unfortunatly.
 

SpeedZealot369

Platinum Member
Feb 5, 2006
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2.5ghz on air cooling though right? also I don't know much about overclocking but is there a way to overclock the cpu without overclocking anything else? my ram gets pretty hot as it is.
 

Fallengod

Diamond Member
Jul 2, 2001
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Of course on air. Im not even using an aftermarket heatsink on mine. I use that good $15 AMD stock dualcore copper heatpipe heatsink for my opty 144. Its plenty.

Yes you could easily run a divider on your mem to keep at below/close to 200mhz.
 

SpeedZealot369

Platinum Member
Feb 5, 2006
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a wha? sorry, whats a devider? Well I'm really looking forward to this, not only do I get at least 500mhz more(2ghz-2.5ghz), but I also get 200mhz more FSB :)
 

kmmatney

Diamond Member
Jun 19, 2000
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You need to overclock to get the extra speed increase. Have you tried overclocking your current cpu? You already may be able to hit 2.4 GHz, so you may not gain a whole lot.
 

SpeedZealot369

Platinum Member
Feb 5, 2006
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I can't figure out how to overclock even with that link modempower gave me, the closest thing I got to overclocking my cpu is with msi's "dynamic" overclocking which I didn't feel worked to well, and I also think it was making my system unstable. Is there a program that monitors cpu and memory heat?
 

mordantmonkey

Diamond Member
Dec 23, 2004
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automatic "dynamic" overclocking on boards is pretty useless.

basically, lower the HTT(north Bridge) to 4x(or 800MHz [1000=5x, 800=4x 600=3x etc] depending on your BIOS) then set your RAM divider(ram clock, or whatever your bios calls it) to 5:6 or 2:3(may read as segments of 200MHz ie 166=5:6 133=2:3) depending on what your overclock is. If you overclock the CPU speed to 250 then a 5:6 divider will give you ~208MHz on your memory and with a 4XHTT a 1000Mhz on your North Bridge. I doubt you'll hit 250 though. just lower your mem and HTT and start raising you CPU clock in 5 or 10mhz increments. you may also try lowering the CPU multiplier when you hit a wall.
 

Absolute0

Senior member
Nov 9, 2005
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i would recommend a 146/148. Everyone i have had has been bench stable around 3 Ghz on stock air cooling.

I do not recommend 144s. The speed binning is really into effect, so if there are any bad opterons (which there inevitably are) they will get dumped with the 144s, with the 146/148s you are much safer!
 

duragezic

Lifer
Oct 11, 1999
11,234
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I'd try overclocking your 3200+ first. Chances are you'll get 2.4ghz without that much effort. To go and spend $200+ on an Opty that may only hit 2.5ghz would be a huge waste (tho it depends how high your 3200+ will go, I hear 2.4ghz is common tho).

Take mine, I paid $240 after tax and shipping to get an Opty 146, yet I can only get it to 2.5ghz stable. At 2.6ghz and 2.7ghz it seems prime stable for an hour or two, but it freezes 3dmark05 very quickly. This is with the stock cooling only, but I have the 4 heatpipe HSF on its way. So say I'm still stuck at 2.5ghz, with an Opty 146, and you got in the same position as I, well you BARELY have an upgrade over your 3200+ that will prolly overclock anyway.

So try your 3200+, then decide is my suggestion.
 

SpeedZealot369

Platinum Member
Feb 5, 2006
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yeah I'll give it a try if I can figure out how to overclock with my motherboard K8N Neo2 Platinum
 

corpseofworms

Senior member
Jun 22, 2005
342
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Nobody has yet noticed the HILARIOUS typo in the title...that wouldn't last 5 seconds at OT.

Yeah, OC the 3200 first to get a feel for it.
 

SpeedZealot369

Platinum Member
Feb 5, 2006
2,778
1
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OMG i didn't even notice i did that !#%!#%@!#$ I'm so sorry I hope I don't get banned...
I succesfully oc'd it to 2.2ghz but I don't know how to go any farther without increasing ram speed which I don't wanna do.
 

duragezic

Lifer
Oct 11, 1999
11,234
4
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Absolute0: I'm using the Epox 9NPA3 Ultra. Supposedly the 9NPA+ which is the same as mine except has firewire and more USB ports is the best budget overclocker, well pretty much one of the best overclockers available behind DFI boards.

On the good side, I did get the dual core stock HSF in today. So I'm gonna shut down in few here and put 'er in, and I'm following the exact directions from Artic Silver for Ceramique, since I didn't exactly do what they say (just put a BB size on the middle of the heatspreader) when I installed it a week ago. But this time I'll make sure everythings cleaned, apply with finger in plastic on the HSF, then to the cpu etc etc. ANYTHING to help I figure.


SpeedZealor369: You shouldn't need to increase your RAM speed. If you have PC3200 rated memory, then make use of the dividers to keep it as close as possible to 200mhz, but likely you will not be able to go over at all (so under 200mhz is fine). As you raise your HTT, you'll need a lower memory speed/divider to compensate. Check out the stickied Zebo's A64 overclocking thread. That should tell you everything you need.

So still experiment with your 3200. Say you get your 3200+ to 2.3 or 2.4ghz. This is equivalent to about a 2.2-2.3ghz Opteron. So if you bought the opty and worst case only got it to 2.5-2.6ghz, you only gained about 300mhz in speed (since the extra L2 cache is a little helpful, but not that much in most apps). If you play games, 300mhz is going to make VERY little difference, and the money would've been much better spent on RAM or video card.
 

Absolute0

Senior member
Nov 9, 2005
714
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I'd say 2.4 Ghz shouldn't be hard, the worst s939 CPU i ever owned did 2.6, it was a 3000+