Laptop/Notebook Processors Review

Notebook Processors
In the following report we present all laptop processors which are available at the market at present and give a rough classification of the current consumption and the performance of the different architectures. An approximate rating with average benchmark values can be found in our beta version benchmark list of mobile processors (coming soon).

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Intel Core 2 Duo (Merom)

This is the Core Duo and Core Solo successor with a longer pipeline and 5-20% more speed without more current consumption. As an addition to the Core Duo design there exists a fourth decoder, an amplified SSE-unit and an additional arithmetical logical unit (ALU).
Features are 2 cores, a 64-bit EM64T command amplification and 2 or 4 MB L2 Cache and 291 millions of transistors, which are finished in 65 nm. Furthermore all types support "Execute Disable Bit" technics, SSSE3 (SSE4), Enhanced Speedstep, LaGrande and most types the virtualisation technics (VT) Vanderpool.

The Core 2 Duo for laptops is identical to the desktop Cure 2 Duo processors but the notebook-processors work with lower tensions (0.95 to 1188 Volt) and a lower Frontside bus clock (1066 vs 667 MHz). The performance of equally clocked notebooks is 20-25% lower than Desktop PCs because of the lower Frontside bus clock and the slower hard disks.

The energy need of the processors is marked by pre-set letters in front of the type designation (number).E ... 55-75 WattsT ... 25-55 Watts (standard version in notebooks)L ... 15-25 Watts (low boltage)U ... <15> Intel product informations

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Intel Core 2 Solo (Merom)
This is the successor of the Core Solo and technically a Core 2 Duo with only one core. It will be available for laptops starting with the 3. quarter 2007 and only as an Ultra Low Voltage (ULV). Therefore the core tension is very low (=economic). 2 versions are planned at moment:
U2100, 1.2 GHz, 1MB L2 Cache, 533 MHz FSB, 5 W max. TDP
U2200, 1.06 GHz, 1MB L2 Cache, 533 FSB, 5 W max. TDP
Intel Core Duo (Yonah)

Pentium M successorDouble Core processor with a very good relation of performance to current consumption. The 2 MB L2 Cache are used together by the double. The maximum capacity of 31 watts is only 4 watts more than with the Pentium M (predecessor). Both cores are lowered automatically and independently of each other by speed steps down to 1 GHz. In addition it now supports also SSE3 instructions.

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After first benchmarks the Core Duo completes all tests at least just as fast as a equivalent Pentium M. With applications, which were designed for multi-processors, the performance can be nearly twice as fast as with the Pentium M (e.g. CineBench around 86% fast)
Models (clock, TDP):T2700 (2.33 GHz, 31 W, FSB 667 MHz)T2600 (2.16 GHz, 31 W, FSB 667 MHz)T2500 (2.00 GHz, 31 W, FSB 667 MHz)T2450 (2.00 GHz, FSB 533 MHz)T2400 (1.83 GHz, 31 W, FSB, 667 MHz)T2350 (1.86 GHz, FSB 533 MHz)T2300 (1.66 GHz, 31 W, 667 MHz)T2250 (1.73 GHz, FSB 533, MHz)T2050 (1.60 GHz, FSB 533 MHz)T2050E (1.60 GHz, FSB 533 MHz): current saving version with 1.3 instead of 1.4 Volt supply voltageL2500 LV, 1.83 GHz, FSB 667 MHzL2400 LV, 1.66 GHz, 15 W, FSB 667 MHzL2300 LV, 1.50 GHz, 15 W, FSB 667 MHzU2500 ULV, 1.20 GHz, 9.5 W, FSB 533 MHzU2400 ULV, 1.06 GHz, 9.5 W, FSB 533 MHz
Pentium Dual Core T2060: 1.6 GHz, FSB 533 MHz, 1 MB L2 Cache (the return of the name Pentium, though Yonah core)Pentium Dual Core T2080: 1.73 GHz, FSB 533 MHz, 1 MB L2 Cache

>Core Duo produkt description

Intel Core Solo
Single core version of the Core Duo and successor of the Intel Pentium M; Because of the 65nm reduced structure width also smaller current consumption than Pentium M (maximally 27 Watts); the performance is comparable with the equivalent clocked Pentium M (somewhat faster because of a few improvements).
Models:T1200 mit 1.50 GHz, FSB 667 MHz, 2MB L2 CacheT1300 with 1,66 GHz 2MB L2 CacheT1350 with 1.86 GHz, FSB 533 MHz, 2MB L2 Cache (about the same level like Pentium M 750)T1400 mit 1.83 GHz, FSB 667 MHz, 2MB L2 Cache
Ultra low voltage models (maximum 5.5 Watt):U1300 mit 1.06 GHz, FSB 667 MHz, 2MB L2 CacheU1400 mit 1.20 GHz, FSB 667 MHz, 2MB L2 CacheU1500 mit 1.33 GHz, FSB 667 MHz, 2MB L2 Cache

> Core Solo product description

Pentium M
Intel Pentium M
900 - 2260 MHz, 1-2 MB level 2 Cache, 90nm and 130nm production process, 400 and 533 MHz front Side bus (FSB);With Intel chip set (855 or 915) and Intel WLAN also available with the name Centrino (name for the package).In the comparison very fast per megahertz and very modest with weaknesses in floating point operations.It is also available as a low voltage version with very small current consumption.

Celeron M
Intel Celeron M
800 - 1500 MHz, 512KB - 1 MB level 2 Cache. It is a Pentium M with halved level 2 Cache and limited on FSB 400. The characteristic of this processor is the speed, which is hardly slower than an equivalent Pentium M. However it can change the speed not dynamically like the Pentium M and therefore needs without load more current.It is also available as Low Voltage Version with very small current consumption.
The 4xx series is based upon the Core Solo and has a Front Side Bus (FSB) of 533 MHz, but only 1 instead of 2 MB L2 Cache. It seems to be bring enough performance for office applications (as the 3xx series).
The 5xx series is based upon the Core 2 Solo (Merom architecure) and is slightly faster than an equally fast 4xx Celeron M. The Celeron does not support any virtualisation technics and has no ViiV and vPRO certificate (in contrary to Core 2 Solo).
410: 1.46 GHz, FSB 533, 1MB L2 Cache420: 1.60 GHz, FSB 533, 1MB L2 Cache423: 1.06 GHz, FSB 533, 1MB L2 Cache, Ultra Low Voltage = current saving
520: 1.60 GHz, FSB 533, 1 MB L2 Cache, 64 Bit530: 1.73 GHz, FSB 533, 1 MB L2 Cache, 64 Bit
523: 0.933 GHz, FSB 533, 1MB L2 Cache, 5 Watt max TDP, Ultra Low Voltage = current saving (starting with quarter 3 2007)

Intel Mobile Pentium 4 M
2,4 - 3.46 Ghz (in former times starting from 1,4 Ghz) with FSB 533 (in former times 400) and 512KB to 1 MB level 2 Cache. It is produced in 90 - 130 nm production process and is relative slow, but uses much current and heats up considerably per megahertz (compared with mobile processors like Pentium M). Technically it is a Pentium 4 with some current saving mechanisms (e.g. speedstep) and less current consumption.
There existed type variants of Mobile Intel Pentium 4 for DTR (desktop replacement laptops). It supports Enhanced Speed Step and other features for the reduction of current consumption, but needs clearly more current than the Pentium 4-M models. It was intruduced with FSB533-connection and clock frequencies between 2.4 and 3.06 GHz.

Intel mobile Celeron 4 M
Technically it is a Pentium 4 M however without speed steps and with less level 2 Cache. In contrast to the Celeron M it is very slow, since the long pipeline of architecture needs a large level 2 Cache. Slow, warm and very hungry for current per megahertz.

AMD Turion64 X2
64 bit dual core (2 core) processor, code name Taylor (2 x 256 KB L2) and Trinidad (2 x 512 KB L2), DDR2-667 support, Pacifica (AMD-v) virtualisation technics, 31-35 W TDP, socket S1, 90 nm fabrication, separated L2 Caches, integrated 333 MHz DDR, 800 MHz Hypertransport
AMD Turion 64 X2 is intended to be positioned against the Intel Core Duo was presented in 17. May 2006. The current consumption is not higher than with Centrino-Duo-notebooks (TL-45 with ATI Xpress and Mobility Radeon X300). This means, that approximative the same battery runtime and fan functions can be expected (with this chipset). However, the performance was 20% below the T2300 (1.66 GHz) due to the lower L2 Cache (Core Duo has 2048 Kbyte shared L2 Cache). Nevertheless, the performance is sufficient.
In March 2007 a Turion 64 with reduced structure was announced (as a response to Intels Santa Rosa Core 2 Duo), which have up to 2.3 GHz.
TL-50 1.6 GHz 2 x 256 KB L2 Cache, 31 Watt TDPTL-52 1.6 GHz 2 x 512 KB L2 Cache, 31 Watt TDPTL-56 1.8 GHz 2 x 512 KB L2 Cache, 33 Watt TDP, 65nm (31 Watt after May 07)TL-58 1.9 GHz 2 x 512KB L2 Cache, 31 Watt TDP, 65nmTL-60 2.0 GHz 2 x 512 KB L2 Cache, 35 Watt TDP, 65nmTL-64 2.2 GHz 2 x 512KB L2 Cache, 35 Watt TDP, 65nmTL-66 2.3 GHz 2 x 512KB L2 Cache, 35 Watt TDP, 65nm

AMD Turion 64
This is a derivative of the Athlon 64 with SSE3 with nx storage protection, 32 and 64 bit support, integrated memory controller for PC3200 memory, mode for low capacity, HT800 and 2 variants ML with 35 Watt and MB with 25 Watt consumption.
Speeds:MT-30 / ML-30 (1.6 GHz, 1 MB L2)MT-32 / ML-32 (1.8 GHz, 512 KB L2)MT-34 / ML-34 (1.8 GHz, 1 MB L2)MK-36 (2.0 GHz, 512 KB L2, 31 Watt TDP)MT-37 / ML-37 (2.0 GHz, 1 MB L2)MT-40 / ML-40 (2.2 GHz, 1 MB L2)ML-42 (2.4 GHz, 512 KB L2)ML-44 (2.4 GHz, 1 MB L2)
Regarding the consumption MT might be very similar to a Pentium M. The speed is moderate and approximately as fast as an Pentium M with equivalent clock speed.

AMD Mobile Athlon 64
2700+ (1,6 Ghz) - 4000+ (2,6 Ghz). The rating is comparable with the clock rates of Pentium 4 M. It is a 32 and 64 bit processor relative fast per megahertz and uses moderately much current (and produces heat). The top versions are DTR (Desktop replacement) versions for large laptops.

AMD Mobile Sempron
2800+ to 3000+ mobile Athlon 64 with reduced level 2 Cache; The rating is not comparable with Athlon 64 Rating. A 3000+ Athlon 64 is faster than a 3000+ Sempron. There is no 64 bit support.
Especially: Sempron 2100+, socket S1, 9 Watt TDP, 1 GHz

AMD Mobile Athlon XP-M
Mobile version of the Athlon XP regarding rating comparable with Pentium 4 clock frequencies; Somewhat more slow than Athlon 64 with same rating and no 64 bit support.

Transmeta Efficeon
Successor of the Crusoe processor; not as fast as comparable Intel and AMD processors, however very economic current consumption;

Transmeta Crusoe
Not as fast as comparable Intel and AMD processors, however very economic current consumption;

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