The Xeon 74xx, formerly known as Dunnington, is indeed a very interesting upgrade path for the older quad socket platform. All Xeon 74xx use the same mPGA604 socket as previous Xeons and are electrically compatible with the Xeon 73xx series. The Xeon 73xx , also known as Tigerton, was basically the quad-core version of the Xeon 53xx (Clovertown) that launched at the end 2006. The new hex-core Dunnington combines six of the latest 45nm Xeon Penryn cores on a single die. As you may remember from our dual socket 45nm Xeon 54xx review, the 45nm Penryn core is about 10% to 20% faster than its older 65nm brother (Merom). There is more: an enormous 12MB to 16MB L3 cache ensures that those six cores access high latency main memory a lot less. This huge L3 also reduces the amount of "cache syncing" traffic between the CPUs, an important bottleneck for the current Intel server platforms.
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In 2-3 weeks Intel will start shipping new dual-core processors with new E0 stepping. There will a new CPU among them: the today’s highest frequency model – Core 2 Duo E8600. Our today’s article will talk about this new processor and the features of all upcoming CPUs with the new processor stepping.
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In 2-3 weeks Intel will start shipping new dual-core processors with new E0 stepping. There will a new CPU among them: the today’s highest frequency model – Core 2 Duo E8600. Our today’s article will talk about this new processor and the features of all upcoming CPUs with the new processor stepping.
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As much as AMD has been ridiculed for its expensive purchase of ATI, the only part of the combined company that’s actually producing exciting product these days is the graphics division. Hot on the heels of the release of the Radeon HD 4800 series AMD has three new Phenom processors...unfortunately this isn’t an architectural change, and what we have today are two lower clocked and one higher clocked model.
The first processor is the Phenom X4 9950 Black Edition. Clocked at 2.6GHz, the Black Edition moniker indicates that it ships completely unlocked. Unfortunately the unlocked nature doesn’t really help you too much as the 65nm Phenoms aren’t really able to scale much beyond 2.7GHz consistently, so it’s mostly a marketing feature.
The next two are potentially more interesting, AMD is introducing the Phenom X4 9350e and 9150e. The little-e indicates that these are energy efficient processors, in fact they are AMD’s first quad-core Phenoms to carry a 65W TDP (the rest of the lineup is 95W, 125W or 140W).
Unfortunately AMD doesn’t achieve these low TDPs by simply power binning its Phenom processors, instead what we’ve got here are two very low-clocked Phenom CPUs: 2.0GHz and 1.8GHz, respectively. By reducing clock speed and lowering the core voltage, AMD was able to hit a 65W TDP (something we’ll prove a little later). The 9150e also uses a lower North Bridge clock of 1.6GHz instead of 1.8GHz for the majority of the Phenom line.
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