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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Comdrpopnfresh - Wednesday, July 26, 2006 - link
Unfortunately, this article goes on the assumption that the AMD chips are not overclocked. To say that the low-end intel chips offer overclocked performance that the AMD FX-62 cannot reach is absurd. With an unlocked multiplier, the FX can certainly stay above Core2's low end. The same could be said for Lower End X2's.... I'd like to see a review with them overclocked compared to Core2's at stock.... Especially since such CPUs on the 939 socket are mature and heavily supported by outstanding overclocking mobos....OcHungry - Wednesday, July 26, 2006 - link
Just be patient till advertizing budget is dried up.I wish AMD was more co-operative in paid per review market that has plagued "money buys" technology.net.
goinginstyle - Thursday, July 27, 2006 - link
Dear OC-Sharikou,AMD would have that ability if it were not for that $2.5B loan they just signed and obviously keeping your blog up and running. I hope you are banned for these types of false and mis-leading statements. By the way, where are all of these Intel ads you keep harping about?
Anand Lal Shimpi - Wednesday, July 26, 2006 - link
Advertising and Editorial are completely independent and separate at AnandTech, we have a 3rd party ad agency that handles all advertising and sales. The agency is completely independent from AnandTech, Inc.The OP's points were addressed by the poster above; this article was done after response to the last one asked for more information on the E6300 and E6400. The overclockability of 90nm X2 CPUs is fairly well known, and enough reference points exist within this article to compare overclocked X2 performance vs. E6300/E6400 overclocked performance.
Take care,
Anand
bere - Wednesday, August 2, 2006 - link
Actually I think the article is missleading(not on purpose). To compare a 370FSB OC CPU with a 200FSB on DEF is pointless. I would have OC'ed all at least 2 CPU's from both sides to see what's the best buy for an OC'er.Sorry for my poor english.
jjunos - Wednesday, July 26, 2006 - link
This article also assumes you actually read it. From the article:DigitalFreak - Wednesday, July 26, 2006 - link
Again, STFU