Intel Core 2 Duo E6300 & E6400: Tremendous Value Through Overclocking
by Anand Lal Shimpi on July 26, 2006 8:17 AM EST- Posted in
- CPUs
Encoding Performance using DivX 6.1, WME9, Quicktime (H.264) & iTunes
Multimedia encoding is typically a very good CPU benchmark, with performance that scales very nearly linearly with faster CPU clock speeds. Video testing was conducted using three popular codecs and applications: Xmpeg 5.03 with DivX 6.1, Windows Media Encoder with WMV9, and QuickTime 7.1 with H.264. The complexity of the encoding process increases as we move from DivX to WMV9, and H.264 encoding is in a league of its own in terms of the amount of CPU time required. Audio encoding performance was also tested using iTunes; MP3 encoding is less time-consuming than video encoding, but it continues to stress CPU performance.
Video encoding was always one of the strong points of the NetBurst architecture, and the results in DivX and WME9 are one of the few instances where the Pentium Extreme Edition 965 can actually outperform all of AMD's dual core offerings. This is in part due to optimizations in the applications, and the advantage doesn't extend over to QuickTime H.264 encoding or MP3 encoding.
Both of the low end Core 2 Duo chips continue to impress, especially the overclocked E6400 which once again manages to surpass the stock X6800 in performance. How can a slower clocked chip outperform the X6800? Video encoding also stresses FSB bandwidth, and the FSB is running faster and providing more bandwidth with the low-end parts due to overclocking. Obviously, neither chip is actually faster than the X6800 if you test that with overclocking thrown in, but for those looking to save money the performance offered is definitely impressive.
DivX performance is very strong with the new Core 2 processors, and it looks like it'll take K8L to restore AMD's competitiveness here. The E6300 performs like a 4600+ while the E6400 performs like a 5000+, but once overclocked there isn't an AMD CPU that can touch either one. Given that most current 90nm X2s top out at around 2.8 - 3.0GHz on air, there's not much hope here for AMD until 65nm.
The situation is pretty much unchanged using Windows Media Encoder 9: the E6300 and E6400 are competitive at stock speeds but once overclocked they are now able to hang with their more expensive 4MB brethren.
Our Quicktime H.264 test is the most stressful out of all the video encoding tests we've got here, but the Core 2 line is quickly changing that as the majority of Core 2 parts complete the test in around 2 minutes. The E6400 is already faster than the FX-62 at stock speeds and overclocking it gives the X6800 a new neighbor at the top of the chart.
The AMD lineup is far more competitive under the iTunes MP3 encoding test; the E6400 is the same speed as the X2 4600+ while the E6300 is just under the performance of the X2 4200+.
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mkruer - Wednesday, July 26, 2006 - link
Interesting enough once you go to 1600x1200 with all the bells and whistles on, the CPU is the least of your worries. Even the AMD Athlon 64 x2 3800+ performs with in 10% of the highest Conroe. LOLcgrecu77 - Wednesday, July 26, 2006 - link
sadly anandtech looks like its following on tom hardware's path of intel biased reviews. Sure, the bias IS NOT blatant, but still.Obviously conroe is faster than amd (by ~20%) and overclocking proves nothing, both athlon and conroe have about the same room for overclocking and probably the performance difference will remain the same.
The fact is that cost/performance definitely is on the amd side right now as the X2-3800 +mb + ram is probably more than 20% cheaper than the core and offers almost the same performance in games (most people care about that, I know I only look at gaming bechmarks). Not to mention that after going the dual core route I would definitely recommend people to NOT buy a dual core now, but stick with a single core 3700+ (or 3800 if the 3700 cannot be find anymore). For ~100$ with minimal overclocking and KEEPING your mb AND memory you will get similar performance in games (unless you ACTUALLY play at 800x600) with a much more expensive system from intel/amd. It only makes sense to buy conroe if you're going high end and you want the maximum performance you can get.
Dual core is NOT worth it on a home computer. Anybody that says differently haa no clue.
OcHungry - Wednesday, July 26, 2006 - link
I don’t get this review? is it about just overclocking conroe or is it about which platform gives you better price/performance?If it is about overclocking conroe, then why are there AMD CPU's listed?
and why aren’t AMD's overclocked?
If it is about overclocking and price performance, then why aren’t AMD's overclocked and why aint we considering the motherboards?
Today you can buy a good "SLI" AM2 motherboard for less than $150 and A64 3800 x2 for $155 and overclock the hell of it. I have seen up to 3ghz easy.
you can buy 2 cheap SLI cards ($85 each) and build a hell of a system.
That is $450 for CPU+mobo+2SLI cards.
Can E6300/6400 do that? NO. For one, you have to buy a $250 motherboard hoping Nvedia will release SLI drivers to Intel.
I am very disappointed at Mr. Anand and this whole outfit.
Mr. Anand, you know, there are AMD users that will question the merit and integrity of this article. Why are you doing this? why didn’t you show any AMD's overclocked? And why aren’t you giving the readers the total package? If it’s about overclocking low end conroe alone, the what are AMD’s doing there? And not overclocked? Is this article for stupid readers?
I mean, I am not trying to offend reader’s intelligence, but this article sure does.
Are you and AMD in some kind of friction? it sure seems that way?
goinginstyle - Wednesday, July 26, 2006 - link
Dear OC-Sharikou,I noticed you have moved on without answering our objective points on the memory article. Let's recap, you were fired from Intel with cause, you are bitter because of it, and will take any opportunity to slam any positive results from Intel. You have an issue with Anand that you have never explained but it is obvious you are extremely jealous or maybe you have a crush on him and was upset he married someone else.
Did you read the title and text? Do you have the ability to read 12 pages of written text or do the pretty graphs throw you off?
Please get up on your mother's lap and have her read you the story again. This time pay attention and put your bottle down.
See the above statement. Even if you overclocked the AMD cpu's and placed them on the space shuttle for launch they are not going to approach Conroe when overclocked also. Get over it, dude.
Good point, in a month or so you will be able to do the same with Conroe. The problem once again with your statement is that you have seen these overclocks. Since you do not actually own these processors then you have no idea what the hell you are spewing. Look in your diaper, that is the same crap you are spreading around here.
If you knew how to read, then you would know nvidia is launching Intel SLI boards under a $100 next month.
I am a AMD user and I am ashamed of your comments. Read through Anand's previous AMD and P4 articles and you will understand how fair this site is unlike others. If he shows the AMD CPUs overclocked and they still do not perform as well as Conroe then what type of bulls&$! are you going to post. You already tried calculations yesterday that blew up in your face. You are consistent, consistently WRONG.
How much does AMD pay you for your daily trash blog and to post this crap at AnandTech?
In conclusion-
Conroe owns AM2 - Get over It!
jjunos - Thursday, July 27, 2006 - link
LOL!!lol sorry, that was a great response!! haha
I have to agree with the above poster....while I guess I'm a bit pro AMD, what I cant' stand is amd freaks bashing anand for his reviews. Do all you amd freaks really think that when K8L comes out, that he won't do just as many indepth reviews of that?
Anand Lal Shimpi - Wednesday, July 26, 2006 - link
As I stated in the review, the only AM2 CPUs (non EE/EE SFF, those will be looked at in a later article) we have on hand are a X2 5000+ and a FX-62. Overclocking either one of those is not representative of how a X2 3800+ overclocks, so it doesn't make sense to include those numbers as we're talking about overclocking on the low end. As I also mentioned in the review, most people are able to reach anywhere between 2.4 and 2.8GHz with their X2 3800+ CPUs without much effort, which we already happen to have numbers for in the review. What we didn't know prior to today was how the 2MB cache Conroes performed at higher clock speeds, this was the point of today's article.As far as your concerns about budget go, our article agrees with your point on motherboard cost. From the conclusion:
"There are two potential concerns with building a budget Core 2 Duo system. The first is availability, and hopefully we will have a clear answer on that subject in the near future. The other is motherboard cost. The ASUS P5W-DH we used in this article is currently the best overclocking motherboard we've seen for the socket 775 platform, but at $250 it is anything but cheap. We have seen quite a few of the P965 motherboards that can also overclock the budget Core 2 chips to reasonable levels, with prices hovering much closer to $140. Unfortunately, none of those boards can support SLI or CrossFire at present."
As far as I can tell, all of your issues were addressed in the review itself. Let me know if there's something I missed.
Take care,
Anand
jjunos - Wednesday, July 26, 2006 - link
*sigh*Seriously guys. They already state this.
True, I would have loved to have seen them have an overclocked 3800 directly for comparison, but really, I've seen all the articles I need to see on overclocking X2's. I don't think the point was to show AMD in a bad light, they were showing how the intels overclock. Looks good, but the AMD are just too cheap now to say no! :D
JarredWalton - Wednesday, July 26, 2006 - link
For the record, our OC results for E6300/E6400 are *very* conservative. Stock cooling means you should easily reach these results, and anyone that spends $30-$50 on an aftermarket cooler can surpass them without batting an eye. On AM2, it's all about core clock, with maybe a 5% difference from HTT/RAM settings. 2.6 GHz with a 3800+ is reasonable (though a bit iffy with stock HSF), so you can get 5000+ performance (which is shown). Throwing in better cooling *might* get 2.8 GHz, but even that is questionable without watercooling or phase. FX-62 on air can probably get 3.0-3.2 GHz, which is still going to be slower in most cases than E6300 OC.That said, X2 with less expensive motherboards is still viable, and I will be buying a couple chips for systems in the near future. If you have motherboards that support X2, it's even more attractive. Going from 939 3000+ to 939 4200+ for $189 is a tremendous upgrade, and you can OC to about 2.6-2.8 GHz. Is that *competitive*? Absolutely! Is it faster than what you can get with Core 2 if you're buying a new motherboard, RAM, and CPU? Nope, but then for many people it doesn't have to be. From page 6:
Take care,
Jarred Walton
bere - Wednesday, August 2, 2006 - link
The 5000+ that U have there is a FSB200. U compare a FSB 200 with 370 FSB.jjunos - Wednesday, July 26, 2006 - link
Since apparently you're opinion defines the world, what exactly is dual core good for?Really, this amd fanboi crap has seriously gotten out of hand lately. I love amd. But the FUD that you guys have been spewing lately is just garbage. In games, the fastest cpu wins, true, but that won't be the case in the future (and even now there are games that take advantage of dual core). In normal usage? Hell yes does dual core matter! The biggest upgraded I've seen in the last 10 years on my home box was when I went from 1cpu to dual cpu.
From day to day usage, other users on my computer, everything. I love it.
Actually, when I started a new job and they only offered me a 1 cpu box, it killed me.
Once you go dual core, you can't go back!