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
Over a week has passed since our Core 2 Extreme & Core 2 Duo review and although the dust is finally starting to settle, not all questions have been answered. We're still hard at work on investigating issues like 64-bit performance and comparing performance per Watt across more applications, but today we're here with another piece of the puzzle: a look at the Core 2 Duo E6300 and E6400.
The E6300 and E6400 are particularly attractive members of the Core 2 family because of their fairly low cost; unfortunately their performance isn't as easy to predict because they are currently the only two Core 2 processors that don't have a 4MB L2 cache. We already illustrated in our earlier review that the larger L2 cache found in the E6600 and above is good for up to 10% of a performance boost depending on the application, but the fact of the matter is that the cheapest 4MB Core 2 Duo is $316 while you can have the E6300 and E6400 for $183 and $224 respectively.
In addition to the question of performance, there's also the issue of overclockability. We've already seen that the high end Core 2 Duo and Core 2 Extreme CPUs are fairly overclockable, thanks in no small part to Intel's 65nm manufacturing process, but what about at the low end? Can you take a $183 Core 2 Duo E6300 and through overclocking achieve performance similar to the more expensive E6600 or even the almighty X6800? It's been a while since we've even wanted to overclock an Intel CPU in order to get better performance. In the past we'd simply recommend buying AMD, but with Core 2 Duo the overclocking prospects are too intriguing to ignore.
New Pricing
AMD hasn't been sitting idle; this week its extremely aggressive price cuts go into effect, making the Athlon 64 X2 a more affordable CPU in many cases compared to Intel's Core 2 processors. AMD also announced its intentions to acquire ATI Technologies, but we'll save that discussion for a forthcoming article.
The new pricing structure can be seen below:
| CPU | Clock Speed | L2 Cache | Price |
| Intel Core 2 Extreme X6800 | 2.93GHz | 4MB | $999 |
| Intel Core 2 Duo E6700 | 2.66GHz | 4MB | $530 |
| Intel Core 2 Duo E6600 | 2.40GHz | 4MB | $316 |
| AMD Athlon 64 X2 5000+ | 2.6GHz | 512KBx2 | $301 |
| AMD Athlon 64 X2 4600+ | 2.4GHz | 512KBx2 | $240 |
| Intel Core 2 Duo E6400 | 2.13GHz | 2MB | $224 |
| AMD Athlon 64 X2 4200+ | 2.2GHz | 512KBx2 | $187 |
| Intel Core 2 Duo E6300 | 1.86GHz | 2MB | $183 |
| Intel Pentium D 945 | 3.40GHz | 2MBx2 | $163 |
| AMD Athlon 64 X2 3800+ | 2.0GHz | 512KBx2 | $152 |
| Intel Pentium D 915 | 2.80GHz | 2MBx2 | $133 |
| Intel Pentium D 820 | 2.80GHz | 1MBx2 | $113 |
| Intel Pentium D 805 | 2.66GHz | 1MBx2 | $93 |
The Athlon 64 X2 5000+ is now cheaper than the Core 2 Duo E6600, which was really necessary considering that the E6600 is faster than the Athlon 64 FX-62 across the board. If the E6600's street price ends up being significantly higher than the table's suggested $316, the 5000+ (assuming its street price is not also inflated by demand) will be a nice alternative.
The E6400 is now more expensive than the X2 4200+, a comparison that we will be able to look at in-depth today to determine a winner at the low $180 - $230 price range.
And finally we have the E6300, which now is a more expensive competitor to our long-time favorite: the Athlon 64 X2 3800+. Today we'll find out for sure if the E6300 will be the low-cost dual core CPU to have.
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goinginstyle - Wednesday, July 26, 2006 - link
Read the entire post and see what the outcome is before posting this kind of information.
Kiijibari - Wednesday, July 26, 2006 - link
That's the reason why he was using stepping 5 cores, if he would have used stepping 6, no article, no clicks, no advertising money (from Intel(?) ;-) )
I mean an overclocking article itself is nonsense, exspecially if you only have 1 kind of a specific CPU and that one is directly from Intel...
Just wait until the first guys bought E6300s because of anandtech and then stuck around ~2.0/2.2 GHz. Guess who is angry then ...
Sadly but it looks like anandtech does not care too much about that :(
regards
Kiijibari
Gary Key - Saturday, July 29, 2006 - link
The retail chips are overclocking just as well as the ES chips from all indications the past few days. I know my retail E6400 is 150MHz higher than the ES sample. ;-) Here is an example at XS.......
http://www.xtremesystems.org/forums/showthread.php...">E6700 Retail
Anand Lal Shimpi - Wednesday, July 26, 2006 - link
As soon as we can get our hands on something other than B1 stepping CPUs we'll include those results. As far as I know, there's nothing that has been changed in current silicon revisions to severely limit overclocking. I haven't run into the issues myself but I will do my best to follow up once I can get later silicon.Take care,
Anand
mkruer - Wednesday, July 26, 2006 - link
Thanks Anand,I don’t know if this is true any more but I seem to recall that Intel has a small scale FAB just for engineering samples, and I think that they tend to use it both as a test to validate the new FAB process as well as the CPU design. Thus the engineering samples tend to be better then the mass production chips. Remember the 5 GHz Prescott Intel showed off. I don’t think that anyone go a 5 GHz Prescott running from production chips without having to use liquid nitrogen to keep the chip cool.
This is something to keep in mind when benching the ES ability. The real production chip might be totally different from a thermal and OC aspect.
mine - Wednesday, July 26, 2006 - link
its been reported that there is one change in b2 retail stepping .based on 3 6800 retail versions (b2) @ (xs) b1 stepping seem to oc better than the retail versions
so right now it seems to early to prejudge ..
PetNorth - Wednesday, July 26, 2006 - link
Anand, your X2 4200+ $215 is wrong. It's EE version. Normal version is $187http://www.amd.com/us-en/Processors/ProductInforma...">http://www.amd.com/us-en/Processors/Pro...ion/0,,3...
aldamon - Wednesday, July 26, 2006 - link
Get a better mobo AT and you'll see what the E6300 can really do. The $150 Gigabyte DS3 goes well over 400 FSB with the right RAM.goinginstyle - Thursday, July 27, 2006 - link
His motherboard is fine, using stock cooling is what limited the overclocks.rjm55 - Wednesday, July 26, 2006 - link
It's been interesting to watch as AT has paid more and more attention to overclocking. Fortunately for me, the overclocking on good air cooling has been a perfect match for what I'm looking for. I just checked and the monster Tuniq cooler we saw in the Conroe launch sells for just $49. People using it say it is silent because of the huge fan that turns slow inside the core. The point is I can likely go even further with the Tuniq than Anand found here - which was impressive enough.Now that we see the headroom on even the cheapest Conroe CPUs it is hard to understnad why anyone can consider an AM2 for anything but the low-end. Until Am2 drops to 65nm the Conroe OC blows away anything I can do with my AM2 chip.
Thanks for showing us what great overclockers Conroe is turning out to be! The E6600 with 4MB cache for $312 is looking mighty sweet for me. If I remeber you got yours to 4GHz.