Need a super-fast answer please - Dual-Core Overclock King: X2 3800+, X2 4400, Opteron 170

[lopri]

Hi,

I'd like an answer (or answers) on the following ASAP.

Disregarding the size of L2 / default voltage / etc., which one of the followings does achive the highest overclock?

X2 3800+ (2000MHz, L2=512K each, 1.35~1.40V)
X2 4400+ (2200MHz, L2=1M each, 1.35~1.40V)
Opteron 170/175 (2000MHz/2200MHz, L2=1M each, 1.3~1.35V)

I just put down the L2/VCore for a reference purpose only. I'm sure most of you know already but still wanted to make it clear. I'm ONLY INTERESTED IN MHz ONLY. Yes, we know that extra cache could help under certain circumstances. Yes, we know that less voltage=less heat=less noise. Other than those obvious, I'd like to know which one tends to achieve the highest overclock - emprically and statistically.

Does anyone have enough knowledge/reading to answer this? Sorry if I sound too anxious but I need an answer ASAP. Any input would be greatly appreciated! :thumbsup:

Thanks.
lop

P.S. Again, We're not talking about overall performance, but just the pure MHz. In other words, 4400+ @2.43GHz might be faster than 3800+ @2.45GHz, but that's an entirely different topic.

 

[biostud]

With overclocking nothing is certain, but from the threads around here the Opterons would be my guess.

 

[lopri]

Reason why I'm asking this, is because dual-core Opterons' OC looks to be less than stellar compared to that of X2s. Many people seem to hit a wall around 2.5~2.6GHz. Well, some unlucky folks even at 2.4GHz. Contrary to this, I've seen many people hitting over 2.6GHz with X2 3800+ (also check AT's own X2 4200+ OC review, where Wesley seem to go easily over 2.7GHz)

I myself own a X2 4800+ and with my lowly A8N-SLI Premium and its dizziness-inducing VCore fluctuation, I get 2.76GHz (dual Prime stable >12Hrs.) @1.475V (dances between 1.44V and 1.52V)
I also have an Opteron 148 and it does 2.86GHz @1.36V (stock) and 3.0GHz @1.48V.

I've been pondering upon an idea of selling my 148 and trying out one of these dual-core Oopterons, but I just can't seem to find any good reason/value for it. Especially with all the price gauging.

 

[RichUK]

Get a Pentium D, i hear those can do over 3Ghz, on stock volts :shocked:

You can also substitute it as a BBQ as well

 

[Leper Messiah]

Originally posted by: RichUK
Get a Pentium D, i hear those can do over 3Ghz, on stock volts :shocked:

You can also substitute it as a BBQ as well

Nice.

I think the E4 X2 3800's are doing better than the E6s. Mine does 2.6 on 1.4vcore, possibly higher (boots into windows at 2.8 at 1.45 vcore, but isnt stable. probably could get it stable at 1.5 or 1.55vcore.)

 

[NeonFlak]

My x2 3800+ w/ stock cooler is good 24/7 @ 2.6ghz 1.4v. It will load windows @ 2.8ghz 1.5v but the stock cooler isn't enough to keep it stable for long, it's stable until it reaches around 60c then she reboots.

 

[Skott]

The early Optys were doing quite good but it looks like whats left in the supply line arent outclocking the the X2s now. Also the Optys were cheaper in the beginning and thats why so many jumped on them. But now prices have risen so thats no longer the case. Also all these chips will do a guranteed overclock to a certain threshold (2.4-2.5) and then it becomes the luck of the draw after that based on the steppings from what I understand of it. Some guy may hit 2.7 and another may hit 2.8 and some cant get past 2.6. Mobo/Cooling setups also play a part in this but the topend seems to be different for different folks.

Since demand has swallowed up the better Optys and pushed prices above 3800 X2s I'm inclined to think the favor has swung back to the X2 chip. If you can find a cheaper Opty then grab it but if not then you're best off with a X2. Thats just my own opinion though.

 

[pctwo]

I wish I could find some dual core Opty vs X2 benchmarks to see how much of a difference the 2x1mb cache makes.

 

[bjc112]

Originally posted by: RichUK
Get a Pentium D, i hear those can do over 3Ghz, on stock volts :shocked:

You can also substitute it as a BBQ as well

Opty!

 

[Mixman]

I don't think the Dual Opty's are a good value any more. Their prices are jacked up, the newer cores don't seem to be great overclockers. My X2 3800 out of the box hit 2.75 and now that it has broken in I can hit 3.8 @1.5V with my temps at 36 idle and 47 load. Doubt the recent 165's will do that maybe a 170, but that's what $400 ?

 

[NeezyDeezy]

I really don't understand why no one has ever made head to head comparisons benchmarking the 165/170 with the x2 3800+

seems unbelievable what with all the reviews of the minute differences between heatsinks out there...

 

[Skott]

The Opty craze is pretty new actually. Thats one reason. Another is that the review sites dont seem to be interested in the Optys as much as the overclockers seem to be. If you want the so called professional reviewers to start making the comparisons then lobbying them to do so would be a good idea. If they get alot of requests for it they'll probably do it.

 

[fbrdphreak]

Originally posted by: Skott
The Opty craze is pretty new actually. Thats one reason. Another is that the review sites dont seem to be interested in the Optys as much as the overclockers seem to be. If you want the so called professional reviewers to start making the comparisons then lobbying them to do so would be a good idea. If they get alot of requests for it they'll probably do it.

AT is working on an article. Who knows if we'll ever see it......

 

[lopri]

Thanks all for your input. So are we agreeing at this point that X2 3800+ is the way to go when it comes to "pure gains"?

 

[Stoneburner]

Just when i finally went for the opty 170...


THis really sucks. AT least the opty has more cache, whatever that's worth

 

[RichUK]

Originally posted by: lopri
Thanks all for your input. So are we agreeing at this point that X2 3800+ is the way to go when it comes to "pure gains"?

I would say so, or you could chance a go on the 165.

By the way i was totally kidding on the Pentium D

 

[harobikes333]

lol I hope you were kidding

I've got a question though. You say or you could go with a 165 but isn't that more expensive than the 3800 X2?

 

[Skott]

Some places the 165 prices have risen above the 3800 but deals can still be found when in supply. Problem is that supply is sporadic at best right now. So if you can find a 165 at same price of the 3800 or less then grab it but if you cant find a 165 then you gotta go with the 3800. There is a rumor supossedly that once the December 165 chip supply runs out then the only way to get a 165 is buying an entire system. Supposedly AMD doesnt like how the Opty 165 was cutting into the X2 market so they decided to make a change on how to get them. Dunno if that rumor is true or not. Never saw a official quote from AMD about it. Just rumors on the net.

 

[Zap]

Originally posted by: RichUK
Get a Pentium D, i hear those can do over 3Ghz, on stock volts :shocked:

Thanks, that was my first LOL of the day. :laugh:

My 3800+ E4 hits 2.5GHz on roughly default vcore (FWIW board undervolts, I added 25mV). Will hit 2.6GHz with more voltage. Doesn't seem to like to POST at 2.7GHz. Have tried on two motherboards, one of them (Abit KN8) verified to be fine at 300MHz system bus with lowering multiplier.