Well, the adapter's only purpose is fo charging, so I guess there's no other difference besides that . I think the 90W is more crucial for more power-hungry notebooks like the 9400 which draw more current during operation.
I thought we already discussed the issue panjang-lebar in Version 2 of this thread
There should be some sort of FAQ regarding the Core 2 Duo on the first page, or new users will keep asking, and we'll keep discussing the same thing over and over. For now, it's true that the biggest reason to choose the Core 2 Duo over the Core Duo is if you're going to be taking advantage of 64-bit applications. The Core 2 Duo is a very hungry beast and is currently bottlenecked by the existing Centrino platform. Expect things to change when Intel releases Santa Rosa in 2007. The Core 2 Duo is expected to show its real performance then.
Core 2 is an eighth-generation x86 architecture microprocessor produced by Intel based on an all-new CPU architecture called the Intel Core microarchitecture, which is the successor of NetBurst microarchitecture that has powered most Intel processors since 2000. Core 2 also marks the retirement of Intel's Pentium brand name that has been used from 1993 and the reunion of Intel's notebook and desktop product lines since Pentium M was released apart from Pentium 4 in 2003.
The first wave of Core 2 processors was officially released on July 27, 2006. Like the Intel Core processors that they supersede, the Core 2 brand is subdivided into Duo (dual-core), Extreme (high-end) and Solo (single-core) models, and a confirmed Quad (quad-core) model is on the way.
Unlike NetBurst-based processors, such as the Pentium 4 and Pentium D, Core 2 does not stress designs based on extremely high clock speeds but rather improvements on other CPU features, including cache efficiency and number of cores. The power consumption of these processors is much lower than the Pentium desktop line of products. With a TDP of only 65 W, Core 2 has a significantly lower power consumption compared to its predecessor desktop chip the (Intel code named processor known as) Prescott's with a TDP of 130 W.
Intel Core 2 processors feature EM64T, Virtualization Technology, Execute Disable Bit, and SSSE3. The release also introduced LaGrande Technology, Enhanced SpeedStep Technology, and Active Management Technology (iAMT2).
Contents [hide]
1 Current processor cores
1.1 Conroe
1.2 Conroe XE
1.3 Allendale
1.4 Merom
2 Future processors
2.1 Conroe
2.2 Penryn
2.3 Kentsfield
2.4 Yorkfield
2.5 Allendale
2.6 Merom
2.7 Conroe-L
3 System requirements
3.1 Motherboard Compatibility
3.2 DDR2 Memory Modules
4 Pricing
4.1 Nomenclature/Abbreviation
5 See also
6 References
7 External links
Current processor coresConroe Intel Core 2 Duo E6600 "Conroe"
The first Intel Core 2 Duo processor cores, codenamed Conroe, were launched on 27 July 2006. These processors are built on a 65 nm process and are intended for desktops, replacing the Pentium 4 and Pentium D. Intel has claimed that Conroe provides 40% more performance at 40% less power compared to the Pentium D. All Conroe processors have 4 MB L2 cache, however the E6300 and E6400 versions have half of their cache disabled, hence they only have 2 MB of usable L2 cache.
The lower end E6300 (1.86 GHz) and E6400 (2.13 GHz), both with a 1066MT/s FSB, were released on July 27, 2006. Traditionally, CPUs of the same family with less cache simply have the unavailable cache disabled (this allows parts that fail quality control to be sold at a lower rating). At launch time, Intel's prices for the Core 2 Duo E6300 and E6400 processors were $183 USD and $224 USD each in quantities of 1000. Conroe CPUs have an enormous value with their overclocking capabilities, the 1.86 GHz model has been shown to overclock to over 3.0 GHz with a good motherboard supporting high FSB speeds. In these reports, an overclocked Allendale 1.86 GHz was shown to edge out the Core 2 Extreme in certain benchmarks. According to well respected reviews, the E6300 and E6400 only suffers on average 3.5% because of the smaller L2 cache size. With the higher overclock of the two processors, enthusiasts can easily make up the 3.5% percent by overclocking further than its higher end Conroe cousins. However, the low multiplier on these two lowerend chips requires a very high FSB to reach high speeds, which few motherboards support.
The higher end Conroe processors are labeled as the E6600 and E6700 Core 2 Duo models, with the E6600 clocked at 2.4 GHz and the E6700 clocked at 2.67 GHz. The family has a 1066 MT/s front side bus, 4 MB shared L2 cache, and 65 watts TDP. These processors have been tested against AMD's current top performing processors (Athlon 64 X2 Series), which were, until this latest Intel release, the fastest CPUs available, and the vanilla Conroe boasts much faster performance.[1] Overclocking results show that the E6700 and E6600 are stable when overclocked to 4 GHz with air cooling and 5.4 GHz with liquid nitrogen cooling, despite having locked multipliers.[2]
At launch time, Intel's prices for the Core 2 Duo E6600 and E6700 processors were $316 USD and $530 USD each in quantities of 1000.
Conroe XEThe top-of-the-line Core 2 Extreme was officially released on July 29, 2006. However some retailers appear to have released it on July 13, 2006, albeit at a high premium. The less powerful E6x00 models of Core 2 Duo were scheduled for simultaneous release with the X6800, which are both available at this time, though in limited quantities. It is powered by the Conroe XE core and replaces the Pentium 4 Extreme Edition and the dual-core Pentium Extreme Edition processors. Core 2 Extreme has a clock speed of 2.93 GHz and a 1066 MT/s FSB, although it was initially expected to achieve 3.33 GHz and 1333 MT/s. The TDP for this family is 75-80 watts. At full load the X6800 does not exceed 45 °C (113 °F), and with SpeedStep enabled the average temperature of the CPU when idle is 25 °C.[3]
At launch time, Intel's price for the Core 2 Extreme X6800 was $999 USD each in quantities of 1000. Like the desktop Core 2 Duo, it has 4 MB of shared L2 cache available. This means that the only major difference between the regular Core 2 Duo and Core 2 Extreme is the clock speed, which is unusual for the "Extreme Edition." It does come with an unlocked multiplier, however, allowing it to basically simulate any E6x00 with 4 MB of L2 cache. This also allows it to gain a better overclocking ability than the other Core 2 processors, with up to a 11X multiplier. Intel's previous Extreme Editions all included a unique feature, such as an increased FSB, more L2 cache, or addition of L3 cache.
Benchmarking tests in multimedia and gaming have shown that the X6800 can lead the best AMD processor by up to 40% in performance. Overclocking proves more promising, as Intel allows the user to change the multiplier number. The X6800 has shown the ability to be overclocked to 3.6 GHz on Intel's stock cooler with no increase in voltage to the system components, 4.1 GHz with good air cooling and increased voltage, and over 5.5 GHz with liquid nitrogen cooling.
Allendale Intel Core 2 Duo E6300 "Conroe"
For a very long time, it was considered that stripped down versions of the Conroe processors were code-named Allendale. In actuality, Allendale is a code-name for a different processor. Many suggest that E6300 and E6400 are actually code-named Allendale, however, the E6300 (1.86 GHz) and E6400 (2.13 GHz) processors are not code-named Allendale because they physically have 4mb cache, same as their big brothers E6600 and E6700 - it is just that half of their physical memory is disabled. Traditionally, CPUs of the same family with less cache simply have the unavailable cache disabled (this allows parts that fail quality control to be sold at a lower rating). The fact that E6300 and E6400 are not code-named Allendale and actually code-named Conroe has been confirmed by Intel themselves.
Quoted from TechReport:
You'll find plenty of sources that will tell you the code name for these 2 MB Core 2 Duo processors is "Allendale," but Intel says otherwise. These CPUs are still code-named "Conroe," which makes sense since they're the same physical chips with half of their L2 cache disabled. Intel may well be cooking up a chip code-named Allendale with 2 MB of L2 cache natively, but this is not that chip.
http://techreport.com/reviews/2006q3/e6300...ff/index.x?pg=1The real Allendale processors, including the E4300, will be released during Q1 2007.
MeromMerom, the first mobile version of the Core 2, was officially released on July 27, 2006 but quietly began shipping to PC manufacturers in mid-July alongside Conroe.[4][5] Merom is Intel's premier line of mobile processors, with largely the same features as Conroe but with more emphasis on low power consumption to enhance notebook battery life. Intel has claimed that Merom will provide 20% more performance yet maintain the same battery life as the Yonah-based Core Duo. Merom will be the first Intel mobile processor to feature EM64T 64-bit extensions.
Intel has stated that the first version of Merom is drop-in compatible with the current Core Duo platform, requiring at most a BIOS update. It has the same thermal envelope and the same 667 MT/s bus rate.[6]
The Merom processors are labeled as the "T5x00" and "T7x00" Core 2 Duo models, with the T5200 clocked at 1.60 GHz, the T5500 clocked at 1.66 GHz, the T5600 clocked at 1.83 GHz, the T7200 clocked at 2.0 GHz, the T7400 clocked at 2.16 GHz, and the T7600 clocked at 2.33 GHz. The T5x00 models come with 2 MB of shared L2 cache, and the T7x00 models come with 4 MB of shared L2 cache.
[edit]
Future processors
This section contains information about scheduled or expected future products.
It may contain unverified or unreliable information, and may not reflect the final version of the product.
[edit]
Conroe
In October 2006, leaked Intel roadmaps unveiled that Intel plans to release four additional Core 2 Duo Processors. The release in 2007 will coincide with that of the Intel Bearlake chipset. The new processors will be the Core 2 Duo E6650, E6750, E6800, and E6850. Processor with a number ending in "50" will have a 1333 MHz FSB. The processors will all have 4 MB of Level 2 cache. Their clock frequency will be similar to that of the already released processors with the same first two digits (E6600, E6700, X6800).[7]
[edit]
Penryn
The successor to the Merom, code-named Penryn will most likely debut the 45 nanometer process that will be also used for the Kentsfield sequel, Yorkfield. Announcements about Penryn are expected by mid-2007.
[edit]
Kentsfield
Kentsfield is the codename for the first quad-core version of the Core 2 processor. The first model of Kentsfield, the Core 2 Extreme QX6700, will arrive with a clock speed of 2.67 GHz and two 4 MB L2 caches in November 2006, at a price of $999, the same as the Core 2 Extreme X6800.[8][9] Initial samples of the processor had substantially higher power consumption than their Core 2 Duo counterparts (approx. 130 watts), however the retail version is expected to have a thermal envelope of 80 W.[10] The top-of-the-line Kentsfield CPU will be branded Core 2 Extreme, while the mainstream versions will be called Core 2 Quad. Unlike AMD's 4x4 (which refers to two dual-core processors on one motherboard), Kentsfield will be a one socket solution; for example, the QX6700 will be two E6700 chips connected together by a 1066 MHz FSB on one MCM, resulting in lower costs but less bandwidth to the northbridge. As can be expected, 4 cores scale very well in multi-threaded applications, such as video editing, ray-tracing, or rendering, where the performance doubles compared to an equally clocked Core 2 Duo. However single or dual-threaded applications, for example most games, will not benefit from the additional cores. For single threaded applications, initial performance reports indicate that this relatively small increase in FSB and processor speed does not dramatically increase overall performance alone; however, it does leave more room for high-speed, low latency RAM to significantly boost the numbers. See the review on Tom's Hardware.
YorkfieldEarlier media reports suggested Yorkfield to be an octa-core (eight-core) processor consisting of 2 dies with four cores each. However the newest rumours indicate that Yorkfield will be the quad-core successor to the Kentsfield processor[11]. It will have a 45 nanometer process, and be a single die design, unlike the Kentsfield, which has been compared to basically two separate Conroe cores in one socket. The Yorkfield will have 8MiB of fully shared L2 cache (the Kentsfield has two separate 4M L2 caches, shared separately by each pair of processors). An across-the-board increase in bus speed (connection to the northbridge, etc.) to greater than 1333 MHz is expected by this point, as all processors will be primarily limited by the bus bandwidth. This may prove to be difficult, as past advancements in bus speed have come coupled with changes in how the data is sent. Yorkfield is also expected to be released supporting DDR3 memory (1333MHz DDR), as suggested by certain enthusiast websites.
AllendaleAn E4300 Allendale (1.8 GHz, 800 MT/s FSB) will be released in the 1st quarter of 2007.
MeromMerom was released on July 27, 2006, and has since been adopted by notebook manufacturers.
A second wave of Merom processors featuring an 800 MT/s FSB and using the new Socket P is expected to launch in April 2007. [12] These chips will be part of the platform codenamed Santa Rosa.[13] Low voltage versions are also planned for release in the same timeframe.
Conroe-LIntel will offer a low-cost single-core version of Conroe, code-named "Conroe-L", starting from the second quarter 2007, according to an article on DailyTech[14]. The new Conroe-L processors will not carry the Core nomenclature. Instead Intel is resuscitating the Pentium and Celeron brands for Conroe-L based products[15].
System requirements
Motherboard CompatibilityConroe, Conroe XE and Allendale all use Socket LGA775; however, not every motherboard is compatible with these processors. Supporting chipsets are: Intel: 865PE, 945P/PL/G, 955X, 975X, P/G/Q965, Q963, 946GZ/PL; ATi: ATI's Radeon Xpress 200, RD600 and RS600 nVidia: nForce 4 SLI Intel Edition and nForce 570/590 Intel Edition VIA: PT880/PT880 Ultra, PT890, PM880 and PM890.
Although a motherboard may have the required chipset to support Conroe, many motherboards based on the above mentioned chipsets do not support Conroe. This is because all Conroe-based processors require a newer voltage regulator module (VRM), named VRM 11. This requirement is a result of Conroe's significantly lower power consumption, compared to the Pentium 4/D CPUs it is replacing. A motherboard that has both a supporting chipset and VRM 11 supports Conroe processors, but even then some boards will need an updated BIOS to recognize Conroe's FID (Family ID) and VID (Voltage ID).
DDR2 Memory ModulesUnlike the previous Pentium 4 and Pentium D design, the Core 2 technology sees a greater benefit from memory running synchronously with the Front Side Bus (FSB). This means that for the Conroe CPUs with FSB of 1066 MT/s, the ideal memory speed is PC2-4200. In some configurations, using PC2-5300 can actually decrease performance. Only when going to PC2-6400 is there a significant performance increase. While expensive DDR2 memory models with tighter timings do improve performance, the difference in real world games and applications is negligible.[16]
PricingCore 2's pricing in lots of 1000 to OEMs is as follows (all prices in USD):
Desktop Versions
X6800 (Core 2 Extreme)- $999
E6700 (Core 2 Duo)- $530
E6600 (Core 2 Duo)- $316
E6400 (Core 2 Duo)- $224
E6300 (Core 2 Duo)- $183
Laptop Versions
T7600 (Core 2 Duo) - $637
T7400 (Core 2 Duo) - $423
T7200 (Core 2 Duo) - $294
T5600 (Core 2 Duo) - $241
T5500 (Core 2 Duo) - $209
It should be noted that these prices are what it costs system builders such as Dell and HP to stock Core 2 processors. There are no set MSRPs for Core 2 CPUs in the retail channel - prices at retailers are usually very close to the above mentioned prices, but are dependent on what the supplier is charging to stock these CPUs as well as supply and demand.
Nomenclature/Abbreviation
Abbreviations quickly develop in all facets of language. In the case of Pentium processors, standard abbreviations include P1 (Pentium), P2 (Pentium II), P3, P4, P4-M, and so on.
With the release of the new Core 2 processor, the abbreviation C2 is often used, as well as C2D to distinguish the Core 2 Duo from future Core 2 Quad and Core 2 Solo processors.
Dec 21 2006, 12:03 PM, updated 19y ago
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