Intel's low-power processors analyzed

Image unavailable (removed by its host) X-bit labs has reviewed Intel's range of low-power processors.

So there is Pentium G620T, Core i3 2100T, Core i5 2390T as well as the Core i5 2500T.

The first three models have two cores and therefore have TDPs of 35 watts. The latter is a quad-core CPU and has a thermal envelope of 45 watts. All are therefore intended for rather compact PCs with less bulky cooling systems. For some of them, they will be placed in all-in-one PCs or living room PCs for example.

But do they really consume less than standard models? What performance loss can be expected in applications like games? To find out, our colleagues compared them to their counterparts with a standard TDP of 65 watts...
Image unavailable (removed by its host) * - Dual-core 35 W model with 2.7 GHz frequency
formally belongs to the Core i5 series. The clock speeds of regular processors are on the pink background.
The blue background indicates the frequencies of the energy-efficient S-series CPUs with reduced 65 W TDP.
The green color indicates the frequencies of the T-series processors in the more energy-efficient series, with 35 W or 45 W TDP.

In other words, the S-series offers energy efficiency modifications faster than Sandy Bridge processors and ensures a 30% reduction in power consumption at the cost of 20% lower clock speed.
The T-series offers more dramatic energy savings, but at the same time it does not include all Quad-Core processors with Hyper-Threading support technology, and the clock speed may be 25-30% lower compared to standard CPU models.

[align=center]Core i5-2500T[/align]
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[align=center]Core i5-2390T[/align]
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[align=center]Core i3-2100T[/align]
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[align=center]Pentium G620T[/align]
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Test bench configuration and methodology Processors:
Intel Core i5-2500T (Sandy Bridge, 4 cores, 2.3 GHz, 6 MB L3, 45 W);
Intel Core i5-2390T (Sandy Bridge, 2 cores, 2.7 GHz, 3 MB L3, 35 W);
Intel Core i5-2310 (Sandy Bridge, 4 cores, 2.9 GHz, 6 MB L3, 95 W);
Intel Core i3-2120 (Sandy Bridge, 2 cores, 3.3 GHz, 3 MB L3, 65 W);
Intel Core i3-2100 (Sandy Bridge, 2 cores, 3.1 GHz, 3 MB L3, 65 W);
Intel Core i3-2100T (Sandy Bridge, 2 cores, 2.5 GHz, 3 MB L3, 35 W);
Intel Pentium G850 (Sandy Bridge, 2 cores, 2.9 GHz, 3 MB L3, 65 W);
Intel Pentium G620 (Sandy Bridge, 2 cores, 2.6 GHz, 3 MB L3, 65 W);
Intel Pentium G620T (Sandy Bridge, 2 cores, 2.2 GHz, 3 MB L3, 35 W).
Processor cooler: default boxed cooler from Intel.
Mainboard: ASUS P8H61-I (LGA1155, Intel H61, Mini-ITX).
Memory – 2 x 2 GB DDR3 SDRAM (Kingston KHX1600C8D3K2/4GX):
DDR3-1067 7-7-7-21 with Pentium G620 and Pentium G620T processors;
DDR3-1333 9-9-9-27 with all other processors.
Hard drive: Kingston SNVP325-S2/128GB.
Power supply unit: Tagan TG880-U33II (880 W).
Operating system: Microsoft Windows 7 SP1 Ultimate x64.
Drivers:
Intel Chipset Driver 9.2.0.1030;
Intel HD Graphics Driver 15.22.1.2361;
Intel Management Engine Driver 7.1.10.1065;
Intel Rapid Storage Technology 10.5.0.1027.

[align=center]Performance[/align] Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Performance in Applications
Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) [align=center]Gaming Performance[/align] Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) Image unavailable (removed by its host) [align=center]Power Consumption[/align]

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X-bit labs vient de passer la gamme de processeurs basse consommation d'Intel en revue.

On y trouve ainsi le Pentium G620T, le Core i3 2100T, le Core i5 2390T ainsi que le Core i5 2500T.

Les trois premiers modèles ont deux coeurs et ont donc des TDP de 35 watts. Le dernier est quant à lui un CPU à quatre coeurs et il a une enveloppe thermique de 45 watts. Tous se destinent donc à des PC plutôt compacts avec des systèmes de refroidissements moins volumineux. Pour certains d'entre eux, ils prendront place dans les PC tout-en-un ou des PC de salons par exemple.

Mais consomment-ils vraiment moins que les modèles classiques ? Quelle perte de performances peut-on attendre en applications comme dans les jeux ? Pour le savoir, nos confrères les ont comparés à leurs homologues avec un TDP classique de 65 watts...
* - Dual-core 35 W model with 2.7 GHz frequency
formally belongs to the Core i5 series. Les vitesses d'horloge des processeurs ordinaires sont sur ​​le fond rose.
Le fond bleu indique les fréquences de l'efficacité énergétique série S CPU avec TDP réduit à 65 W.
La couleur verte indique les fréquences des processeurs de série T de la série plus éconergétique, avec 35 W ou 45 W de TDP.

En d'autres termes, les série S offre l'efficacité énergétique des modifications plus rapide des processeurs Sandy Bridge et assure une baisse de puissance de 30% de la consommation au détriment de 20% de la vitesse d'horloge.
Les series T offre des économies d'énergie plus dramatique, mais dans le même temps elle ne comprend pas tous les processeurs Quad-Core avec technologie Hyper-Threading soutien, et la vitesse d'horloge peut être 25-30% inférieure par rapport aux modèles CPU.

[align=center]Core i5-2500T[/align]

[align=center]Core i5-2390T[/align]

[align=center]Core i3-2100T[/align]

[align=center]Pentium G620T[/align]

Configuration banc d'essai et méthodologie Processors:
Intel Core i5-2500T (Sandy Bridge, 4 cores, 2.3 GHz, 6 MB L3, 45 W);
Intel Core i5-2390T (Sandy Bridge, 2 cores, 2.7 GHz, 3 MB L3, 35 W);
Intel Core i5-2310 (Sandy Bridge, 4 cores, 2.9 GHz, 6 MB L3, 95 W);
Intel Core i3-2120 (Sandy Bridge, 2 cores, 3.3 GHz, 3 MB L3, 65 W);
Intel Core i3-2100 (Sandy Bridge, 2 cores, 3.1 GHz, 3 MB L3, 65 W);
Intel Core i3-2100T (Sandy Bridge, 2 cores, 2.5 GHz, 3 MB L3, 35 W);
Intel Pentium G850 (Sandy Bridge, 2 cores, 2.9 GHz, 3 MB L3, 65 W);
Intel Pentium G620 (Sandy Bridge, 2 cores, 2.6 GHz, 3 MB L3, 65 W);
Intel Pentium G620T (Sandy Bridge, 2 cores, 2.2 GHz, 3 MB L3, 35 W).
Processor cooler: default boxed cooler from Intel.
Mainboard: ASUS P8H61-I (LGA1155, Intel H61, Mini-ITX).
Memory – 2 x 2 GB DDR3 SDRAM (Kingston KHX1600C8D3K2/4GX):
DDR3-1067 7-7-7-21 with Pentium G620 and Pentium G620T processors;
DDR3-1333 9-9-9-27 with all other processors.
Hard drive: Kingston SNVP325-S2/128GB.
Power supply unit: Tagan TG880-U33II (880 W).
Operating system: Microsoft Windows 7 SP1 Ultimate x64.
Drivers:
Intel Chipset Driver 9.2.0.1030;
Intel HD Graphics Driver 15.22.1.2361;
Intel Management Engine Driver 7.1.10.1065;
Intel Rapid Storage Technology 10.5.0.1027.

[align=center]Performance[/align] Performance in Applications
[align=center]Gaming Performance[/align] [align=center]Power Consumption[/align]

Source