Tech Link (Processor): Core 2 Duo E6750 Review

HardwareSecrets tested this amazing processor and well, they aren't too impressed about it. I guess they missed the fact that it does run on higher FSB on the same/similar TDP and clockspeed meaning these processors can now take a beating on memory intensive applications (and yeah, overclocking too). On the same/similar clock speed, there will be hardly any difference from applications that don't rely on fast memory access. Anyway, check it out...

Conclusions
On all our tests Core 2 Duo E6750 performance was identical to Core 2 Duo E6700, even though it uses a faster front side bus – and we simulated the use of several different types of application.

So what is the advantage of using a Core 2 Duo E6750 instead of a Core 2 Duo E6700? Based on the results from our tests, none.

Then why Intel is launching this new 1,333 MHz external bus? We have two answers for that.

First, on quad-core CPUs the higher external clock rate may increase the system performance. This happens because currently on Intel quad-core CPUs the cores are arranged into two pairs. The cores inside each pair can talk directly to each other, but if they need to talk to a core that belongs to the other pair they need to go to the front side bus and make this connection going thru outside the processor. Increasing the CPU external clock rate increases, at least in theory, the speed each core pair can talk to each other. For a detailed explanation about this subject please read our Intel Quad Core Overview and Roadmap article.

We will have to wait until we review a quad-core CPU based on this new FSB to see if this is really the case.

The second reason we can see is regarding DDR3-1333 memories, which will be supported by the Intel X38 chipset to be launched in July. Using DDR3-1333 memories with a Core 2 running externally at 1,333 MHz you will be able to match the FSB clock with the memory clock, allowing you to achieve the maximum performance with current technology.

In retrospect we must keep in mind that this is the first time in six years that Intel is launching a new front side bus speed with memories matching it. When the Pentium 4 was launched, for example, it used the then-new 400 MHz FSB and there were no 400 MHz memories at the time – this was PC-100 times and DDR-400 wasn’t available yet. The same thing happened when they launched the 533 MHz, the 800 MHz and even the 1,066 MHz external clock speeds. Even to this date Intel chipsets do not officially support DDR2-1066 (even though Intel P965 and P35 can access memories at 1,066 MHz just fine and P35 officially support DDR3-1066). DDR3-1333 availability may be an issue, but that is a totally different story.

Source:Core 2 Duo E6750 Review

Tech Link (Processor): New Member In Core 2 Duo Processor Family: Introducing CPUs with 1333MHz Bus

xbitlabs has a pretty good info on the new breed of processors from Intel. They have put it thru the test and come out good even with a sound beating and torture from the crew. Check it out...

Conclusion
Well, let’s sum up a few things now. Intel’s decision to equip their Core 2 Duo processors with faster 1333MHz bus support is regarded as another move towards higher performance of this processor family. It is partially true. As we have seen today, higher bus speed will obviously boost the performance in most applications. However, unfortunately, this boost will not be as significant as we hoped: it hardly ever gets beyond 3%. But, the changes in the bus frequency are not the only thing that determined the advantage of the new CPUs over their predecessors: different clock frequencies are another reason. For example, the nominal frequency of the top Core 2 Duo E6850 model has now risen to 3.0GHz, while before today the maximum frequency of the existing Core 2 Duo processors used to be only 2.93GHz. This also affects the performance, and together with the faster bus it brings in more confident victory of the top Core 2 Duo CPUs. In other words, the launch of the Core 2 Duo CPUs with 1333MHz bus will become another part of the progress CPUs on Core micro-architecture are making. Although we all wish that they were moving at a little bit faster pace towards the promising Penryn family.

Higher bus frequency is not the only nice thing about the new processors. They are based on the new G0 stepping of the Conroe core that boasts better frequency potential. As a result, the FSB Wall has been pushed farther back and the overclocking results have improved significantly. For example, our overclocking experiments revealed that the new processors can work at 3.6-3.8GHz with traditional air-cooling onboard. Therefore, Core 2 Duo E6850, 6750 and 6550 should become very popular among overclockers, especially since Intel is going to price them very affordably. According to the preliminary data, Core 2 Duo E6850 will sell for $266, Core 2 Duo E6750 - for $183, and Core 2 Duo E6550 – for $163. This attractive price tag will certainly help Intel stimulate the transition to systems with 1333MHz bus.

Source:New Member In Core 2 Duo Processor Family: Introducing CPUs with 1333MHz Bus