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Opty 165 or Pentium D
- Thread starter jayanath
- Start date
stevty2889
Diamond Member
I agree with the opty 165. While you wouldn't likely actualy need phase change to hit 4.2ghz with a Presler, you would need very good air cooling, and an expensive motherboard and some luck as well. The best I got mine to was 3.7ghz(before one of the cores died), and it didn't come close to performing as well as my X2 @2.6ghz. My second 920 is only @3.4ghz so it's even farther behind my X2. Also, it's easiest to just do the overclocking from the bios. Software that lets you overclock tends to be lacking in options, you have the best options right in the bios.
EDIT: Here is a link to Zebo's quick and dirty overclocking guide, that should help you out quite a bit.
EDIT: Here is a link to Zebo's quick and dirty overclocking guide, that should help you out quite a bit.
My two cents: It depends what you are going to do with it. Just got the 805 Pen-D and will be building a rig for video encoding this week. I'll still have my AMD rig for general usage but from what I've seen so far, the D is unbeatable for encoding at a measly $130. If you are only going to have one rig and it will be multi-purpose, the 165 is likely the way to go.
Dude, don't even stress those stock speeds, I thought the same thing with my Opty 144, so I shopped around for good steppings found some, and have my CPU to 2.9 with a crappy Corsair Value select 1gb kit. (my OCZ 2gb platinum is on its way) after my OCZ comes in I'm expecting at least 2.95-3.1ghz with 1.52vcore 49c load temps
GO FOR Opteron 165 all the way
EDIT: Pay $20 extra to have someone else test the OC and buy it used.. my 2cents 😛
GO FOR Opteron 165 all the way
EDIT: Pay $20 extra to have someone else test the OC and buy it used.. my 2cents 😛
stevty2889
Diamond Member
He was wrong about the phase change, for Presler at least, smithfield is another story. But since I own an 805 a 920, and an X2, I can tell you that it does take 4.2ghz on a pentium-d to match a 2.6ghz 512k cache, or 2.5ghz 1mb cache X2 in most things. There are a few programs where the pentium-d starts pulling ahead around 3.8ghz, but primarly, 4.2ghz is required to beat the X2.
Markfw
Moderator Emeritus, Elite Member
Wow ! First, I have both and have benchmarked them. It depends on what you are running but my statement is true, and I posted the benchmarks back when I got the 820D. On the phase change, I was talking 8xx, not 9xx. If you know anyone that has a 8xx (805 or 820 specifically) that runs 4.2 on any kind of air, please post link.
As to telling me I am ignorant, since I own them and know of what I speak, and you don;t, well figure it out, and thanks for the insults. I got banned for that, but since I don;t PM a mod every time some ignoramus posts, I will just end this here.....
You've benchmarked a 920 at 4.2Ghz? Nope. I rememeber your threads.
a) You had an 820, not a 920. The processors perform differently at the same speed due to cache size differences.
b) From what I remember of your posts you got your 820 nowhere near 4.2Ghz so your comparisons were nothing more than extrapolation.
c) On the phase change, your fault for not specifying. You gave the impression that it takes phase change to get an Intel D up to 4.2. NOT the case.
stevty2889
Diamond Member
I have a 920, 805, and X2, and had an 830 as well...his description is pretty accurate, 4.2ghz will equal around a 2.6ghz X2. There will be some programs where the Pentium-D will pull ahead before that, but for the most part 4.2ghz is needed to match or pull ahead in a majority of programs. Most programs are not very cache dependant either, so the cache differance between the 820 and 920 means very little in a majority of cases. My 805 and 920 compare very similarly at 3.7ghz, despite the cahce differance, and FSB differance. The main differance I see between the 8xx and 9xx series is the amount of heat generated, the 8xx series runs a lot warmer.
My only points, besides the phase change misinformation, were:
1) The people making the comparison between their AMD's at 2.6 and the Intel D' at 4.2 have not actually gotten their Intel's to 4.2, or in Marks's case were using a 820 to extrapolate 920 performance. Nobody that I've seen has been able to do an apples to apples comparison.
2) Cache size difference does make a substantial diference in the only apps I care about; Games. The D920's outperform their 820 counterparts at the same clock speed consistently.
stevty2889
Diamond Member
Well then maybe you should go buy an X2 so you can see it for yourself, I don't see you being able to do an apples to apples comparison either..I can tell you that at 3.7ghz, the pentium-d's still lag far behind the X2 @2.6ghz, which is more than you can say having nothing but the pentium-d yourself..and going by the numbers I get at differant speeds, 4.2ghz is a very accurate prediction of what is needed to catch the X2 @2.6ghz..maybe if any of my 4 differant pentium-d's were able to make it to 4.2ghz on a reasonably priced motherboard I could give you an exact comparison, but why would I want to spend twice as much on a motherboard to get the performance I already get with my X2?
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